Update data/ashrae_tables.py

data/ashrae_tables.py

@@ -176,6 +176,19 @@ class ASHRAETables:
             return False, f"Invalid solar absorptivity: {solar_absorptivity}. Must be between 0.0 and 1.0."
         return True, "Valid inputs."
 
+    def _load_color_correction(self) -> Dict[float, float]:
+        """
+        Load solar absorptivity correction factors based on ASHRAE Handbook—Fundamentals (2017).
+        Returns: Dictionary mapping solar absorptivity values to correction factors.
+        """
+        return {
+            0.3: 0.85,   # Light surfaces
+            0.45: 0.925, # Light to Medium surfaces
+            0.6: 1.00,   # Medium surfaces
+            0.75: 1.075, # Medium to Dark surfaces
+            0.9: 1.15    # Dark surfaces
+        }
+
     def interpolate_cltd(self, latitude: float, cltd_table_low: pd.DataFrame, cltd_table_high: pd.DataFrame, lat_low: float, lat_high: float) -> pd.DataFrame:
         """
         Interpolate CLTD or SCL values between two latitudes.