Applicable Systems
- Primary: Energy
Objective/Method/Outcome
- Objective: Calculate the Heating and Cooling Degree Days using an advanced method.
- Method: Heating Degree Days calculated by comparing Heating Degree Days, Cooling Degree Days, and a Temperature baseline.
- Outcome: A calculated Trend Log is generated with the number of Heating Degree Days for the previous 24 hours.
Logic
Heating Degree Days = (Temp Base - Min Temp) * (0.08 + 0.42* (Temp Base - Min Temp)/(Max Temp - Min Temp)) Cooling Degree Days = (Min Temp - Temp Base) * (0.08 + 0.42* (Min Temp - Temp Base)/(Max Temp - Min Temp))
Notes
The base Temperature is 18 deg. C (can be changed in the Logic Flow, Block number 8). This formula only works with SI units.
Inputs
- OAT {sensor, outside, air, temp}
