Heating and Cooling Degree Days [deg C or F or K] [Basic Formula]

Applicable Systems

  • Primary: Energy

Objective/Method/Outcome

  • Objective: Calculate the Heating and Cooling Degree Days using a basic method (Mid Range OAT)
  • Method: Heating Degree Days calculated by comparing temperature base with maximum and minimum temperatures.
  • 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 - (Temp Max - Temp Min) / 2 Cooling Degree Days = (Temp Max - Temp Min) / 2 - Temp base
Heating and Cooling Degree Days [deg C or F or K] [Basic Formula]

Notes

Base Temperature is 18 deg.C (can be changed in the Logic Flow, Block number 8). Changing the Value of this block allow to use different units.

Inputs

  • OAT {sensor, outside, air, temp}