Load Design Temperatures

When you are entering load Design Temperatures, you are not calculating the heating and cooling load, but you are entering the results of a load calculation. Ideally, you should enter the results of an actual Manual J calculation.

The Program takes the load and the design temperature and calculates a load profile, the temperature at each 5 degree temperature bin. Raising the design cooling temperature in GeoAnalyst does NOT increase the total cooling, but actually decreases total cooling.

Example:    A cooling load of 36,000 btuh is entered with a design temperature of 92 degrees.  

At 97 degrees (above the design temperature), the program calculates a load of 42,667

At 92 degrees, you have a load of 36,000

At 87 degrees, you have a load of 29,333

At 82 degrees, you have a load of 22,667

If you increase the design temperature to 97 degrees and still enter a load of 36,000, you get:

At 97 degrees, you have a load of 36,000

At 92 degrees, you have a load of 30.375

At 87 degrees, you have a load of 24.750

At 82 degrees, you have a load of 19.125