Hi everyone, In an IDF file's Schedule:Compact objects that has type "Temperature", what does the value of temperature setpoint mean? For example in a heating setpoint schedule if the setpoint is set to 24 degrees, does it mean that zone temperature will be set to 22 degrees or heating systems will start working when zone temperature hits 22? Sorry if this question sounds weird, I'm new to this.
A heating set point temperature of 24 C means there will be a heaing load in the zone if the zone temperature is predicted to be below 24 C without any HVAC. The HVAC system should turn on to provide heating and the zone should wind up at 24 C if there is sufficient heating capacity. It depends on the HVAC configuration whether the zone temperature will be at 24 C or near 24 C, or floating if there is no heating system.
As an addendum to this, note also that by default EnergyPlus's setpoints refer to the air temperature. This differs from a number of other simulation tools (e.g. Sunrel, AccuRate) which primarily use operative temperature (average of air and surface temperature).
Designbuilder provides a decent discussion of the issues here: https://designbuilder.co.uk/helpv7.0/Content/Calculation_Options.htm#Operativ
Asked: 2024-01-30 02:28:24 -0500
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Last updated: Jan 31
