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enabling year-round production and the growth (in enclosed environments) of specialty crops
What is one purpose of a greenhouse?
produce cucumbers year-round for the Roman emperor Tiberius
What was one of the first uses of a greenhouse?
Europe
Where were the first modern greenhouses built?
The World Solar Challenge
What is the name of the solar powered car race held every two years?
90.87
What was the winner of the World Solar Challenge's average speed in 2007 in km/h?
a biannual solar-powered car race
What is The World Solar Challenge?
1987
When was The World Solar Challenge started?
67 kilometres per hour (42 mph)
What was the average speed of a winning solar powered car in 1987?
90.87 kilometres per hour (56.46 mph)
What was the average speed of a winning solar powered car by 2007?
The North American Solar Challenge and the planned South African Solar Challenge
What are some other similar car races that use solar powered vehicles?
1975
The first practical solar boat was constructed in what year?
1975
When was the first solar powered boat made?
Kenichi Horie
Who first crossed the Pacific ocean using a solar powered boat?
the sun21 catamaran
What was the name of the first solar powered boat that crossed the Atlantic ocean?
40
What altitude did the Solar Riser reach in feet?
Solar Impulse
What is the name of the aircraft circling the globe in 2015 via solar power?
1974
When was the first unmanned flight by a solar powered plane made?
29 April 1979
When was the first solar powered manned flight made?
July 1981
When did the Solar Challenger cross the English Channel?
California to North Carolina
Where did Eric Scott Raymond fly using a solar powered plane in 1990?
36 hours
How long is the solar powered plane Solar Impulse able to remain in the air?
hydrogen production from protons
What is a possible alternative to making carbon-based fuels from reduction of carbon dioxide?
Solar chemical processes
What process converts solar energy into storable and transportable fuels?
artificial photosynthesis
What solar process can be used to produce different fuels?
The Solzinc process
What is the name of the process under development at the Weizmann Institute?
pure zinc
The Solznic process produces what?
Hydrogen production technologies
What has been a main area of solar chemical research since the 1970s?
uses concentrators to split water into oxygen and hydrogen at high temperatures
What is one of the thermochemical processes that has been explored besides electrolysis?
Solzinc process
What is the name of the process being developed by the Weizmann Institute?
heat
In what form do thermal mass systems store solar energy?
Thermal mass systems
What is the system called that can store solar energy in the form of heat?
water, earth and stone
What are some of the materials used in thermal storage systems?
reduce overall heating and cooling requirements
What is something that can be accomplished by a thermal mass system?
thermal
Paraffin wax is an example of what kind of storage media?
The "Dover House"
The first Glauber's salt heating system was first used where?
paraffin wax and Glauber's salt
What are some examples of phase change materials?
64 °C or 147 °F
What are the approximate temperatures that can be delivered by phase change materials?
Dover House
What was the name of the heating system that first used Glauber's salt?
they are low-cost, have a high specific heat capacity and can deliver heat at temperatures compatible with conventional power systems
Why are salts good for thermal storage?
1.44 terajoules (400,000 kWh)
How much energy was the Solar Two able to store using salts?
rechargeable batteries
Where do off-grid PV systems store excess electricity?
rechargeable batteries
What do off-grid PV systems use to store excess electricity?
Net metering programs
What are the programs that gives credit to households for delivering electricity to the grid called?
by 'rolling back' the meter whenever the home produces more electricity than it consumes
How is the credit to households accomplished?
Most standard meters accurately measure in both directions
Why is a second meter usually unnecessary to monitor electricity use?
a hydroelectric power generator
When water is released due to high demand, the pump become swhat?
water pumped when energy is available from a lower elevation reservoir to a higher elevation one
Pumped-storage hydroelectricity stores energy in what form?
by releasing the water, with the pump becoming a hydroelectric power generator
How is the energy stored by pumped-storage hydroelectricity recovered?
1973
The oil embargo in what year was a contributing factor to the reorganization of energy policies?
The 1973 oil embargo and 1979 energy crisis
What brought attention to solar technologies in the 1970s?
the Federal Photovoltaic Utilization Program in the US and the Sunshine Program in Japan
What are the names of some of the incentive programs used to promote solar technology?
SERI, now NREL
What is the name of the solar energy research facility in the US?
NEDO
What is the name of the solar energy research facility in Japan?
Fraunhofer Institute for Solar Energy Systems ISE
What is the name of the solar energy research facility in Germany?
the 1920s
The solar water heaters introduced in the US in the 1890s saw growth until what time period?
20% per year
Since 1999, what average rate has the solar water heating sector progressed at?
in the 1890s
When did the use of solar water heaters in the US first begin?
falling petroleum prices
Why did interest in solar water heating decrease in the 1980s?
20%
Growth of solar water heating development has averaged how much per year since 1999
154 GW
What was the estimated capacity of solar water heating and cooling in 2007?
The International Energy Agency
Which organization believes that solar energy can solve some of our most pressing issues?
The International Energy Agency
Who said that solar energy can help solve some of the most urgent problems in the world?
glass in building
ISO 9050 relates to standards for what?
materials used in solar water heaters
ISO 10217 relates to standards for what?
ISO 9050
What is the name of the standard related to glass in building?
ISO 10217
What is the name of the standard related to the materials used in solar water heaters?
passive solar or active solar
What are the technologies used to capture solar energy characterized as?
photovoltaic systems, concentrated solar power and solar water heating
What are some active solar techniques used to harness solar energy?
orienting a building to the Sun
What is an example of a passive solar technique?
559.8 EJ
What was the total worldwide energy consumption in 2012?
1,575–49,837 exajoules (EJ)
What is solar energy's yearly potential?
The large magnitude of solar energy available
What makes solar energy an appealing source of electricity>
The United Nations Development Programme
Who estimated the annual potential of solar energy in 2000?
through reliance on an indigenous, inexhaustible and mostly import-independent resource
How will solar energy increase energy security?
the costs of mitigating global warming
What costs will solar energy lower?
learning investments
What should the cost of incentives for producing solar energy be considered?
keep fossil fuel prices lower than otherwise
What effect will solar energy have on the price of fossil fuels?
geography, time variation, cloud cover, and the land available to humans
Why does the amount of usable solar energy differ from the amount near the planets surface?
areas that are closer to the equator have a greater amount of solar radiation
Why does geography have an effect of the amount of solar energy available?
photovoltaics
What is the process called that can increase solar energy in areas further away from the earth's equator?
during the nighttime there is little solar radiation on the surface of the Earth for solar panels to absorb
Why does time have an effect of the amount of available solar energy?
clouds block incoming light from the sun and reduce the light available for solar cells
What effect does cloud coverage have on the amount of solar energy available?
solar panels can only be set up on land that is unowned and suitable for solar panels
Why does land availability have an effect on solar energy?
many people have discovered that they can collect energy directly from their homes this way
Why are roofs a good place for solar panels?
insolation, cloud cover, and the land that is usable by humans
What factors were taken into account in the estimate published in 2000 on solar energy?
1,575–49,837 EJ per year
What was the total potential of solar energy found in the estimate?
conversion of sunlight into electricity
What is solar power?
either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP)
How is sunlight converted into electricity?
lenses or mirrors and tracking systems
What does a concentrated solar power system use?
focus a large area of sunlight into a small beam
What is the purpose of a concentrated solar power system?
photoelectric effect
What method does the photovoltaics system use to turn light into electricity?
Sunlight
What has influenced the design since the beginning of architectural history?
Greeks and Chinese
Who first utilized solar architecture?
toward the south
In which direction were the buildings built by the Greeks and Chinese facing?
a black balloon that is filled with ordinary air
What is a solar balloon?
the air inside is heated and expands causing an upward buoyancy force
What happens when sunlight shines on a solar balloon?
the toy market
What is the use of solar balloons typically limited to?
the surface-area to payload-weight ratio is relatively high
Why is the use of solar balloons typically limited to the toy market?
driven by an expectation that coal would soon become scarce
Why was solar technology developed in the 1860s?
increasing availability, economy, and utility of coal and petroleum
What slowed the development of solar technologies in the early 20th century?