Sizing with & without Heat recovery unit

ApacheCalc – Heat loss/gain calculations using CIBSE procedures to determine design heating/cooling loads.
ApacheLoads – Design heating/cooling loads calculations using ASHRAE Heat Balance Method.
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lutinfr
VE Student
VE Student
Posts: 36
Joined: Thu Oct 16, 2014 3:27 am

Sizing with & without Heat recovery unit

Post by lutinfr »

In the sizing process of Apache, I've seen that the flow rate of the system with and without heat recovery unit (HRU) are all based on the flow rate that generated by load calculation.

But load calculation has no option for heat recovery unit, so the flow in 2 HVAC systems will be the same. (one has HRU, other does not have HRU). This issue seem to be not fair for 2 systems.

But I'm not sure this is a real sizing process in IES. I really need an explanation, as much detail as possible.

Thank you.
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