Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Yes, the difference is likely the latent load. What's the HVAC system you're using?
You can get the total cooling rate from the HVAC system rather than the zone.
For example, if your district cooling serves terminal equipment that includes a Coil:Cooling:Water, you would use the Cooling Coil Total Cooling Rate (W).
If you use an IdealLoads system, you would likely use Zone Ideal Loads Supply Air Total Cooling Rate [W]
I also suggest you read in detail the section that explains what the Zone Air System Sensible Heating/Cooling Energy/Rate actually reports. It'll help you understand why this is not the variable to use if you want to sum them to match the DistrictCooling's cooling rate.
| | 2 | No.2 Revision |
Yes, The difference is because you're not using the right reporting variable[1]. But yes, simply put the biggest difference is likely the latent load. What's the HVAC system you're using? load (but it could also be zone multipliers, etc).
You can get the total cooling rate from the HVAC system rather than the zone. What's the HVAC system you're using?
For example, if your district cooling serves terminal equipment that includes a Coil:Cooling:Water, you would use the Cooling Coil Total Cooling Rate (W).
If you use an IdealLoads a ZoneHVAC:IdealLoadsAirSystem system, you would likely use Zone Ideal Loads Supply Air Total Cooling Rate [W].
[1] I also suggest you read in detail the section that explains what the Zone Air System Sensible Heating/Cooling Energy/Rate actually reports. It'll help you understand why this is not the variable to use if you want to sum them to match the DistrictCooling's cooling rate.
