Calculation of Simple HVAC Energy Consumption from EnergyPlus loads

With Simple HVAC DesignBuilder calculates boiler, chiller, DHW fuel consumption from the loads calculated by EnergyPlus using the CoP data at the building level on the HVAC tab as follows:

• Boiler energy = EnergyPlus heating loads / Heating system CoP
• Chiller energy = EnergyPlus cooling loads / Cooling system CoP
• DHW energy (kWh) = DHW CoP x 1000 (kg/m3) x 4.187 (KJ/kg-K) x (EnergyPlus DHW m3 loads) x (Delivery water temperature - Mains water temperature)

Where:

DHW CoP is Heating system CoP when using '1-Central heating boiler' DHW type

Data shown in blue is HVAC model data.

Data shown in italics is read from the EnergyPlus results eso file .