Update utils/heat_transfer.py

utils/heat_transfer.py

@@ -7,6 +7,7 @@ infiltration, and solar geometry, with improved modularity and error handling.
 from typing import Optional, Tuple
 import math
 import numpy as np
+from utils.psychrometrics import Psychrometrics
 
 
 class SolarCalculations:
@@ -209,8 +210,9 @@ class HeatTransferCalculations:
     """Class for heat transfer calculations."""
     
     def __init__(self):
-        """Initialize heat transfer calculations with solar calculations."""
+        """Initialize heat transfer calculations with solar and psychrometric calculations."""
         self.solar = SolarCalculations()
+        self.psychrometrics = Psychrometrics()
     
     def validate_inputs(self, temp: float, area: float = 0.0, flow_rate: float = 0.0) -> None:
         """
@@ -497,4 +499,10 @@ if __name__ == "__main__":
     area = 20.0  # m²
     delta_t = 10.0  # °C
     conduction = heat_transfer_calculator.conduction_heat_transfer(u_value, area, delta_t)
-    print(f"Conduction Heat Transfer: {conduction:.2f} W")
+    print(f"Conduction Heat Transfer: {conduction:.2f} W")
+    
+    # Example psychrometric calculation
+    temp = 25.0  # °C
+    rh = 50.0  # %
+    humidity_ratio = heat_transfer_calculator.psychrometrics.humidity_ratio(temp, rh)
+    print(f"Humidity Ratio: {humidity_ratio:.6f} kg/kg")