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active solar techniques use photovoltaics , concentrated solar power , solar thermal collectors , pumps , and fans to convert sunlight into useful outputs . passive solar techniques include selecting materials with favorable thermal properties , designing spaces that naturally circulate air , and referencing the positi... | are demand side solar technologies generally active or passive ? | passive | 87 | 10 | 1 |
active solar techniques use photovoltaics , concentrated solar power , solar thermal collectors , pumps , and fans to convert sunlight into useful outputs . passive solar techniques include selecting materials with favorable thermal properties , designing spaces that naturally circulate air , and referencing the positi... | what is an active solar technique used to generate energy ? | solar thermal collectors | 87 | 11 | 3 |
active solar techniques use photovoltaics , concentrated solar power , solar thermal collectors , pumps , and fans to convert sunlight into useful outputs . passive solar techniques include selecting materials with favorable thermal properties , designing spaces that naturally circulate air , and referencing the positi... | what is an active solar technique used to generate energy ? | designing spaces that naturally circulate air | 87 | 11 | 6 |
active solar techniques use photovoltaics , concentrated solar power , solar thermal collectors , pumps , and fans to convert sunlight into useful outputs . passive solar techniques include selecting materials with favorable thermal properties , designing spaces that naturally circulate air , and referencing the positi... | what does an active solar technique do ? | increase the supply of energy | 87 | 8 | 5 |
active solar techniques use photovoltaics , concentrated solar power , solar thermal collectors , pumps , and fans to convert sunlight into useful outputs . passive solar techniques include selecting materials with favorable thermal properties , designing spaces that naturally circulate air , and referencing the positi... | what does a passive solar technique do ? | reduce the need for alternate resources | 87 | 8 | 6 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | what was the name of the inventor who built a solar engine in 1897 ? | frank shuman | 157 | 15 | 2 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | in what year was the sun power company formed ? | 1908 | 157 | 10 | 1 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | shuman patented his solar engine system in what year ? | 1912 | 157 | 10 | 1 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | who is frank shuman ? | a u . s . inventor , engineer and solar energy pioneer | 157 | 5 | 12 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | in what year did solar engine build his solar engine ? | 1897 | 157 | 11 | 1 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | what was the solar engine used to power ? | steam engine | 157 | 9 | 2 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | in what year was the sun power company established ? | 1908 | 157 | 10 | 1 |
in 1897 , frank shuman , a u . s . inventor , engineer and solar energy pioneer built a small demonstration solar engine that worked by reflecting solar energy onto square boxes filled with ether , which has a lower boiling point than water , and were fitted internally with black pipes which in turn powered a steam eng... | in what year did frank shuman patent his solar engine ? | 1912 | 157 | 11 | 1 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | where did shuman build the world ' s first solar thermal power station ? | maadi , egypt | 133 | 14 | 3 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | how many liters of water per minute did shuman ' s engine pump in litres ? | 22 , 000 | 133 | 16 | 3 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | in what decade were shuman ' s ideas about solar energy revived ? | the 1970s | 133 | 13 | 2 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | where was the first solar thermal power plant built ? | maadi , egypt | 133 | 10 | 3 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | what was used to power the plants engine ? | parabolic troughs | 133 | 9 | 2 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | from what river did the engine pump water ? | nile river | 133 | 9 | 2 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | what slowed down the growth of solar energy ? | the outbreak of world war i and the discovery of cheap oil | 133 | 9 | 12 |
shuman built the world s first solar thermal power station in maadi , egypt , between 1912 and 1913 . shuman s plant used parabolic troughs to power a 45 52 kilowatts ( 60 70 hp ) engine that pumped more than 22 , 000 litres ( 4 , 800 imp gal 5 , 800 us gal ) of water per minute from the nile river to adjacent cotton f... | when was the interest in solar energy restored ? | the 1970s | 133 | 9 | 2 |
solar hot water systems use sunlight to heat water . in low geographical latitudes ( below 40 degrees ) from 60 to 70 of the domestic hot water use with temperatures up to 60 c can be provided by solar heating systems . the most common types of solar water heaters are evacuated tube collectors ( 44 ) and glazed flat pl... | according to shuman , up to what percentage of domestic hot water can be provided by solar heating systems ? | 70 | 86 | 20 | 1 |
solar hot water systems use sunlight to heat water . in low geographical latitudes ( below 40 degrees ) from 60 to 70 of the domestic hot water use with temperatures up to 60 c can be provided by solar heating systems . the most common types of solar water heaters are evacuated tube collectors ( 44 ) and glazed flat pl... | what do solar hot water systems use to heat water ? | sunlight | 86 | 11 | 1 |
solar hot water systems use sunlight to heat water . in low geographical latitudes ( below 40 degrees ) from 60 to 70 of the domestic hot water use with temperatures up to 60 c can be provided by solar heating systems . the most common types of solar water heaters are evacuated tube collectors ( 44 ) and glazed flat pl... | how much hot water can be produced by solar heating systems in low geographical latitudes ? | 60 to 70 of the domestic hot water | 86 | 16 | 8 |
solar hot water systems use sunlight to heat water . in low geographical latitudes ( below 40 degrees ) from 60 to 70 of the domestic hot water use with temperatures up to 60 c can be provided by solar heating systems . the most common types of solar water heaters are evacuated tube collectors ( 44 ) and glazed flat pl... | what is a common type of solar water heater ? | evacuated tube collectors | 86 | 10 | 3 |
solar hot water systems use sunlight to heat water . in low geographical latitudes ( below 40 degrees ) from 60 to 70 of the domestic hot water use with temperatures up to 60 c can be provided by solar heating systems . the most common types of solar water heaters are evacuated tube collectors ( 44 ) and glazed flat pl... | what type of solar water heater is used to heat pools ? | unglazed plastic collectors | 86 | 12 | 3 |
as of 2007 , the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt ( gwth ) . china is the world leader in their deployment with 70 gwth installed as of 2006 and a long term goal of 210 gwth by 2020 . israel and cyprus are the per capita leaders in the use of solar hot water syst... | what was the total capacity of solar hot water systems in 2007 in gigawatts ? | 154 | 102 | 15 | 1 |
as of 2007 , the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt ( gwth ) . china is the world leader in their deployment with 70 gwth installed as of 2006 and a long term goal of 210 gwth by 2020 . israel and cyprus are the per capita leaders in the use of solar hot water syst... | over 90 of homes use solar hot water systems in which two countries ? | israel and cyprus | 102 | 14 | 3 |
as of 2007 , the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt ( gwth ) . china is the world leader in their deployment with 70 gwth installed as of 2006 and a long term goal of 210 gwth by 2020 . israel and cyprus are the per capita leaders in the use of solar hot water syst... | what is the capacity of a solar hot water system ? | approximately 154 thermal gigawatt | 102 | 11 | 4 |
as of 2007 , the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt ( gwth ) . china is the world leader in their deployment with 70 gwth installed as of 2006 and a long term goal of 210 gwth by 2020 . israel and cyprus are the per capita leaders in the use of solar hot water syst... | what country is the leader in the implementation of solar powered hot water systems ? | china | 102 | 15 | 1 |
as of 2007 , the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt ( gwth ) . china is the world leader in their deployment with 70 gwth installed as of 2006 and a long term goal of 210 gwth by 2020 . israel and cyprus are the per capita leaders in the use of solar hot water syst... | what percentage of households use solar hot water systems in israel and cyprus ? | over 90 | 102 | 14 | 2 |
as of 2007 , the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt ( gwth ) . china is the world leader in their deployment with 70 gwth installed as of 2006 and a long term goal of 210 gwth by 2020 . israel and cyprus are the per capita leaders in the use of solar hot water syst... | in what countries is the use to solar hot water used mainly for w swimming pools ? | united states , canada and australia | 102 | 17 | 6 |
in the united states , heating , ventilation and air conditioning ( hvac ) systems account for 30 ( 4 . 65 ej yr ) of the energy used in commercial buildings and nearly 50 ( 10 . 1 ej yr ) of the energy used in residential buildings . solar heating , cooling and ventilation technologies can be used to offset a portion ... | what percentage of energy in commercial buildings comes from hvac systems ? | 50 | 68 | 12 | 1 |
in the united states , heating , ventilation and air conditioning ( hvac ) systems account for 30 ( 4 . 65 ej yr ) of the energy used in commercial buildings and nearly 50 ( 10 . 1 ej yr ) of the energy used in residential buildings . solar heating , cooling and ventilation technologies can be used to offset a portion ... | how much energy does an hvac system use in commercial locations ? | 30 ( 4 . 65 ej yr ) | 68 | 12 | 8 |
in the united states , heating , ventilation and air conditioning ( hvac ) systems account for 30 ( 4 . 65 ej yr ) of the energy used in commercial buildings and nearly 50 ( 10 . 1 ej yr ) of the energy used in residential buildings . solar heating , cooling and ventilation technologies can be used to offset a portion ... | how much energy does an hvac system use in residential locations ? | 50 ( 10 . 1 ej yr ) | 68 | 12 | 8 |
in the united states , heating , ventilation and air conditioning ( hvac ) systems account for 30 ( 4 . 65 ej yr ) of the energy used in commercial buildings and nearly 50 ( 10 . 1 ej yr ) of the energy used in residential buildings . solar heating , cooling and ventilation technologies can be used to offset a portion ... | what can be used to balance out a portion of the energy used by hvac systems ? | solar heating , cooling and ventilation technologies | 68 | 17 | 7 |
thermal mass is any material that can be used to store heat heat from the sun in the case of solar energy . common thermal mass materials include stone , cement and water . historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and rad... | materials that can be used to store heat are known as what kind of mass ? | thermal | 128 | 16 | 1 |
thermal mass is any material that can be used to store heat heat from the sun in the case of solar energy . common thermal mass materials include stone , cement and water . historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and rad... | what is thermal mass ? | any material that can be used to store heat | 128 | 5 | 9 |
thermal mass is any material that can be used to store heat heat from the sun in the case of solar energy . common thermal mass materials include stone , cement and water . historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and rad... | what are typical thermal mass material ? | stone , cement and water | 128 | 7 | 5 |
thermal mass is any material that can be used to store heat heat from the sun in the case of solar energy . common thermal mass materials include stone , cement and water . historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and rad... | how is thermal mass used to keep buildings cool ? | by absorbing solar energy during the day and radiating stored heat to the cooler atmosphere at night | 128 | 10 | 17 |
thermal mass is any material that can be used to store heat heat from the sun in the case of solar energy . common thermal mass materials include stone , cement and water . historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and rad... | what is a something that determines the size of thermal mass ? | climates | 128 | 12 | 1 |
thermal mass is any material that can be used to store heat heat from the sun in the case of solar energy . common thermal mass materials include stone , cement and water . historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and rad... | what does thermal mass reduce the need for ? | auxiliary heating and cooling equipment | 128 | 9 | 5 |
a solar chimney ( or thermal chimney , in this context ) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building . as the chimney warms , the air inside is heated causing an updraft that pulls air through the building . performance can be improved by using g... | what kind of system is a solar chimney ? | passive solar ventilation | 70 | 9 | 3 |
a solar chimney ( or thermal chimney , in this context ) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building . as the chimney warms , the air inside is heated causing an updraft that pulls air through the building . performance can be improved by using g... | what is a solar chimney ? | a passive solar ventilation system | 70 | 6 | 5 |
a solar chimney ( or thermal chimney , in this context ) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building . as the chimney warms , the air inside is heated causing an updraft that pulls air through the building . performance can be improved by using g... | what is a solar chimney made of ? | a vertical shaft connecting the interior and exterior of a building | 70 | 8 | 11 |
a solar chimney ( or thermal chimney , in this context ) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building . as the chimney warms , the air inside is heated causing an updraft that pulls air through the building . performance can be improved by using g... | how can the performance of a solar chimney be improved ? | by using glazing and thermal mass materials in a way that mimics greenhouses | 70 | 11 | 13 |
deciduous trees and plants have been promoted as a means of controlling solar heating and cooling . when planted on the southern side of a building in the northern hemisphere or the northern side in the southern hemisphere , their leaves provide shade during the summer , while the bare limbs allow light to pass during ... | the placement of deciduous trees on the equator facing side of a building can have a negative effect on solar availability in which season ? | winter | 150 | 25 | 1 |
deciduous trees and plants have been promoted as a means of controlling solar heating and cooling . when planted on the southern side of a building in the northern hemisphere or the northern side in the southern hemisphere , their leaves provide shade during the summer , while the bare limbs allow light to pass during ... | what is something that is used to control solar heating and cooling ? | trees and plants | 150 | 13 | 3 |
deciduous trees and plants have been promoted as a means of controlling solar heating and cooling . when planted on the southern side of a building in the northern hemisphere or the northern side in the southern hemisphere , their leaves provide shade during the summer , while the bare limbs allow light to pass during ... | how much solar radiation is blocked by leafless trees ? | 1 3 to 1 2 | 150 | 10 | 5 |
deciduous trees and plants have been promoted as a means of controlling solar heating and cooling . when planted on the southern side of a building in the northern hemisphere or the northern side in the southern hemisphere , their leaves provide shade during the summer , while the bare limbs allow light to pass during ... | why should trees not be planted on the side of a building facing the equator ? | they will interfere with winter solar availability | 150 | 16 | 7 |
deciduous trees and plants have been promoted as a means of controlling solar heating and cooling . when planted on the southern side of a building in the northern hemisphere or the northern side in the southern hemisphere , their leaves provide shade during the summer , while the bare limbs allow light to pass during ... | what side of a building should trees be planted without greatly affecting solar gain in the winter ? | east and west | 150 | 18 | 3 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | horace de saussure built the first box cooker in what year ? | 1767 | 156 | 12 | 1 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | reflector cookers can reach temperatures in celsius of up to what ? | 315 | 156 | 12 | 1 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | what are solar cookers used for ? | cooking , drying and pasteurization | 156 | 7 | 5 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | what are the 3 main categories of solar cookers ? | box cookers , panel cookers and reflector cookers | 156 | 10 | 8 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | who created the box cooker ? | horace de saussure | 156 | 6 | 3 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | what is the typical temperature range for a box cooker ? | 90 150 c ( 194 302 f ) | 156 | 11 | 8 |
solar cookers use sunlight for cooking , drying and pasteurization . they can be grouped into three broad categories : box cookers , panel cookers and reflector cookers . the simplest solar cooker is the box cooker first built by horace de saussure in 1767 . a basic box cooker consists of an insulated container with a ... | what do reflector cookers require to function ? | direct light | 156 | 8 | 2 |
solar distillation can be used to make saline or brackish water potable . the first recorded instance of this was by 16th century arab alchemists . a large scale solar distillation project was first constructed in 1872 in the chilean mining town of las salinas . the plant , which had solar collection area of 4 , 700 m2... | in what year was a large scale solar distillation project constructed in las salinas ? | 1872 | 162 | 15 | 1 |
solar distillation can be used to make saline or brackish water potable . the first recorded instance of this was by 16th century arab alchemists . a large scale solar distillation project was first constructed in 1872 in the chilean mining town of las salinas . the plant , which had solar collection area of 4 , 700 m2... | what is used to make saline or brackish water drinkable ? | solar distillation | 162 | 11 | 2 |
solar distillation can be used to make saline or brackish water potable . the first recorded instance of this was by 16th century arab alchemists . a large scale solar distillation project was first constructed in 1872 in the chilean mining town of las salinas . the plant , which had solar collection area of 4 , 700 m2... | by who was the first record of solar distillation done by ? | 16th century arab alchemists | 162 | 12 | 4 |
solar distillation can be used to make saline or brackish water potable . the first recorded instance of this was by 16th century arab alchemists . a large scale solar distillation project was first constructed in 1872 in the chilean mining town of las salinas . the plant , which had solar collection area of 4 , 700 m2... | when was the first large solar distillation plant created ? | 1872 | 162 | 10 | 1 |
solar distillation can be used to make saline or brackish water potable . the first recorded instance of this was by 16th century arab alchemists . a large scale solar distillation project was first constructed in 1872 in the chilean mining town of las salinas . the plant , which had solar collection area of 4 , 700 m2... | how much water was produced by the plant ? | 22 , 700 l ( 5 , 000 imp gal 6 , 000 us gal ) per day | 162 | 9 | 18 |
solar distillation can be used to make saline or brackish water potable . the first recorded instance of this was by 16th century arab alchemists . a large scale solar distillation project was first constructed in 1872 in the chilean mining town of las salinas . the plant , which had solar collection area of 4 , 700 m2... | what is an example of a solar distillation design ? | single slope | 162 | 10 | 2 |
solar water disinfection ( sodis ) involves exposing water filled plastic polyethylene terephthalate ( pet ) bottles to sunlight for several hours . exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions . it is recommended by the world health organ... | solar water disinfection is recommended by which organization ? | the world health organization | 81 | 9 | 4 |
solar water disinfection ( sodis ) involves exposing water filled plastic polyethylene terephthalate ( pet ) bottles to sunlight for several hours . exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions . it is recommended by the world health organ... | how long should the plastic bottles filled with water be exposed to sunlight during solar water disinfection ? | a minimum of six hours to two days during fully overcast conditions | 81 | 18 | 12 |
solar water disinfection ( sodis ) involves exposing water filled plastic polyethylene terephthalate ( pet ) bottles to sunlight for several hours . exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions . it is recommended by the world health organ... | what does the world health organization say about solar water disinfection ? | a viable method for household water treatment and safe storage | 81 | 12 | 10 |
solar water disinfection ( sodis ) involves exposing water filled plastic polyethylene terephthalate ( pet ) bottles to sunlight for several hours . exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions . it is recommended by the world health organ... | how many people use solar water disinfection to disinfect their drinking water ? | over two million people in developing countries | 81 | 13 | 7 |
solar energy may be used in a water stabilisation pond to treat waste water without chemicals or electricity . a further environmental advantage is that algae grow in such ponds and consume carbon dioxide in photosynthesis , although algae may produce toxic chemicals that make the water unusable . | what is a possible negative effect of algae in water stabilization ponds ? | toxic chemicals | 49 | 13 | 2 |
solar energy may be used in a water stabilisation pond to treat waste water without chemicals or electricity . a further environmental advantage is that algae grow in such ponds and consume carbon dioxide in photosynthesis , although algae may produce toxic chemicals that make the water unusable . | for what reason would solar energy be used in a water stabilisation pond ? | to treat waste water without chemicals or electricity | 49 | 14 | 8 |
solar energy may be used in a water stabilisation pond to treat waste water without chemicals or electricity . a further environmental advantage is that algae grow in such ponds and consume carbon dioxide in photosynthesis , although algae may produce toxic chemicals that make the water unusable . | what is a reason why the water from a water stabilisation pond may be unusable ? | algae may produce toxic chemicals | 49 | 16 | 5 |
solar power is anticipated to become the world ' s largest source of electricity by 2050 , with solar photovoltaics and concentrated solar power contributing 16 and 11 percent to the global overall consumption , respectively . | by what year is solar power expected to become the world ' s greatest source of electricity ? | 2050 | 37 | 18 | 1 |
solar power is anticipated to become the world ' s largest source of electricity by 2050 , with solar photovoltaics and concentrated solar power contributing 16 and 11 percent to the global overall consumption , respectively . | when is solar power is foreseen to become the largest source of electricity ? | 2050 | 37 | 14 | 1 |
commercial csp plants were first developed in the 1980s . since 1985 the eventually 354 mw segs csp installation , in the mojave desert of california , is the largest solar power plant in the world . other large csp plants include the 150 mw solnova solar power station and the 100 mw andasol solar power station , both ... | the largest solar power plant in the world is located in what desert ? | the mojave desert | 147 | 14 | 3 |
commercial csp plants were first developed in the 1980s . since 1985 the eventually 354 mw segs csp installation , in the mojave desert of california , is the largest solar power plant in the world . other large csp plants include the 150 mw solnova solar power station and the 100 mw andasol solar power station , both ... | less than 1 of the world ' s total grid electricity was generated by solar energy in what year ? | 2013 | 147 | 20 | 1 |
commercial csp plants were first developed in the 1980s . since 1985 the eventually 354 mw segs csp installation , in the mojave desert of california , is the largest solar power plant in the world . other large csp plants include the 150 mw solnova solar power station and the 100 mw andasol solar power station , both ... | what is the largest solar power plant in the world ? | 354 mw segs csp | 147 | 11 | 4 |
commercial csp plants were first developed in the 1980s . since 1985 the eventually 354 mw segs csp installation , in the mojave desert of california , is the largest solar power plant in the world . other large csp plants include the 150 mw solnova solar power station and the 100 mw andasol solar power station , both ... | where is the largest solar power plant in the world located ? | mojave desert of california | 147 | 12 | 4 |
commercial csp plants were first developed in the 1980s . since 1985 the eventually 354 mw segs csp installation , in the mojave desert of california , is the largest solar power plant in the world . other large csp plants include the 150 mw solnova solar power station and the 100 mw andasol solar power station , both ... | what are the largest photovoltaic solar power plants ? | the 250 mw agua caliente solar project , in the united states , and the 221 mw charanka solar park in india | 147 | 9 | 22 |
concentrating solar power ( csp ) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam . the concentrated heat is then used as a heat source for a conventional power plant . a wide range of concentrating technologies exists the most developed are the parabolic trough , ... | in all the different csp systems , concentrated sunlight is used to heat what ? | a working fluid | 110 | 15 | 3 |
concentrating solar power ( csp ) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam . the concentrated heat is then used as a heat source for a conventional power plant . a wide range of concentrating technologies exists the most developed are the parabolic trough , ... | what do concentrating solar power systems use ? | lenses or mirrors and tracking systems | 110 | 8 | 6 |
concentrating solar power ( csp ) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam . the concentrated heat is then used as a heat source for a conventional power plant . a wide range of concentrating technologies exists the most developed are the parabolic trough , ... | what is the heat generated from a concentrating solar power system used for ? | a heat source for a conventional power plant | 110 | 14 | 8 |
concentrating solar power ( csp ) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam . the concentrated heat is then used as a heat source for a conventional power plant . a wide range of concentrating technologies exists the most developed are the parabolic trough , ... | what is one of the most developed concentrating solar power technologies ? | the stirling dish | 110 | 12 | 3 |
concentrating solar power ( csp ) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam . the concentrated heat is then used as a heat source for a conventional power plant . a wide range of concentrating technologies exists the most developed are the parabolic trough , ... | what do concentrating solar power technologies have in common ? | a working fluid is heated by the concentrated sunlight | 110 | 10 | 9 |
the common features of passive solar architecture are orientation relative to the sun , compact proportion ( a low surface area to volume ratio ) , selective shading ( overhangs ) and thermal mass . when these features are tailored to the local climate and environment they can produce well lit spaces that stay in a com... | socrate ' s what is a classic example of passive solar design ? | megaron house | 119 | 13 | 2 |
the common features of passive solar architecture are orientation relative to the sun , compact proportion ( a low surface area to volume ratio ) , selective shading ( overhangs ) and thermal mass . when these features are tailored to the local climate and environment they can produce well lit spaces that stay in a com... | what is a common feature of passive solar architecture ? | orientation relative to the sun | 119 | 10 | 5 |
the common features of passive solar architecture are orientation relative to the sun , compact proportion ( a low surface area to volume ratio ) , selective shading ( overhangs ) and thermal mass . when these features are tailored to the local climate and environment they can produce well lit spaces that stay in a com... | what is produced when the features of passive solar architecture are customized to the environment ? | well lit spaces that stay in a comfortable temperature range | 119 | 16 | 10 |
the common features of passive solar architecture are orientation relative to the sun , compact proportion ( a low surface area to volume ratio ) , selective shading ( overhangs ) and thermal mass . when these features are tailored to the local climate and environment they can produce well lit spaces that stay in a com... | what is an example of passive solar design ? | socrates ' megaron house | 119 | 9 | 4 |
the common features of passive solar architecture are orientation relative to the sun , compact proportion ( a low surface area to volume ratio ) , selective shading ( overhangs ) and thermal mass . when these features are tailored to the local climate and environment they can produce well lit spaces that stay in a com... | what kind of equipment can improve system performance ? | pumps , fans and switchable windows | 119 | 9 | 6 |
urban heat islands ( uhi ) are metropolitan areas with higher temperatures than that of the surrounding environment . the higher temperatures are a result of increased absorption of the solar light by urban materials such as asphalt and concrete , which have lower albedos and higher heat capacities than those in the na... | uhi is an abbreviation of what ? | urban heat islands | 128 | 7 | 3 |
urban heat islands ( uhi ) are metropolitan areas with higher temperatures than that of the surrounding environment . the higher temperatures are a result of increased absorption of the solar light by urban materials such as asphalt and concrete , which have lower albedos and higher heat capacities than those in the na... | a program in los angeles believes that with 1 billion , city temperatures could be reduced by approximately how many degrees in celsius ? | 3 | 128 | 24 | 1 |
urban heat islands ( uhi ) are metropolitan areas with higher temperatures than that of the surrounding environment . the higher temperatures are a result of increased absorption of the solar light by urban materials such as asphalt and concrete , which have lower albedos and higher heat capacities than those in the na... | what are the metropolitan areas with higher temperatures than the surrounding areas called ? | urban heat islands | 128 | 14 | 3 |
urban heat islands ( uhi ) are metropolitan areas with higher temperatures than that of the surrounding environment . the higher temperatures are a result of increased absorption of the solar light by urban materials such as asphalt and concrete , which have lower albedos and higher heat capacities than those in the na... | what materials absorb sunlight and create higher temperatures than natural materials ? | asphalt and concrete | 128 | 12 | 3 |
urban heat islands ( uhi ) are metropolitan areas with higher temperatures than that of the surrounding environment . the higher temperatures are a result of increased absorption of the solar light by urban materials such as asphalt and concrete , which have lower albedos and higher heat capacities than those in the na... | what is a way to reduce the high temperatures created in urban heat islands ? | paint buildings and roads white and plant trees | 128 | 15 | 8 |
greenhouses convert solar light to heat , enabling year round production and the growth ( in enclosed environments ) of specialty crops and other plants not naturally suited to the local climate . primitive greenhouses were first used during roman times to produce cucumbers year round for the roman emperor tiberius . t... | when were the first greenhouses used ? | roman times | 100 | 7 | 2 |
greenhouses convert solar light to heat , enabling year round production and the growth ( in enclosed environments ) of specialty crops and other plants not naturally suited to the local climate . primitive greenhouses were first used during roman times to produce cucumbers year round for the roman emperor tiberius . t... | in what century were the first modern greenhouses constructed ? | the 16th | 100 | 10 | 2 |
greenhouses convert solar light to heat , enabling year round production and the growth ( in enclosed environments ) of specialty crops and other plants not naturally suited to the local climate . primitive greenhouses were first used during roman times to produce cucumbers year round for the roman emperor tiberius . t... | what do greenhouses do with solar energy ? | convert solar light to heat | 100 | 8 | 5 |
greenhouses convert solar light to heat , enabling year round production and the growth ( in enclosed environments ) of specialty crops and other plants not naturally suited to the local climate . primitive greenhouses were first used during roman times to produce cucumbers year round for the roman emperor tiberius . t... | what is one purpose of a greenhouse ? | enabling year round production and the growth ( in enclosed environments ) of specialty crops | 100 | 8 | 15 |
greenhouses convert solar light to heat , enabling year round production and the growth ( in enclosed environments ) of specialty crops and other plants not naturally suited to the local climate . primitive greenhouses were first used during roman times to produce cucumbers year round for the roman emperor tiberius . t... | what was one of the first uses of a greenhouse ? | produce cucumbers year round for the roman emperor tiberius | 100 | 11 | 9 |
greenhouses convert solar light to heat , enabling year round production and the growth ( in enclosed environments ) of specialty crops and other plants not naturally suited to the local climate . primitive greenhouses were first used during roman times to produce cucumbers year round for the roman emperor tiberius . t... | where were the first modern greenhouses built ? | europe | 100 | 8 | 1 |
development of a solar powered car has been an engineering goal since the 1980s . the world solar challenge is a biannual solar powered car race , where teams from universities and enterprises compete over 3 , 021 kilometres ( 1 , 877 mi ) across central australia from darwin to adelaide . in 1987 , when it was founded... | what is the name of the solar powered car race held every two years ? | the world solar challenge | 131 | 15 | 4 |
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