Heating and Cooling Degree Days [deg C] [Expert Formula]

Applicable Systems

  • Primary: Energy

Objective/Method/Outcome

  • Objective: Calculate the Heating and Cooling Degree Days using an expert 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 = SUM (Hourly Temp - Base Temp) / 24 Cooling Degree Days = SUM (Base Temp - Hourly Temp) / 24
Heating and Cooling Degree Days [deg C] [Expert Formula]

Notes

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}