I have a question about 90.1-2010. Table G3.1.13 states that if the simulation program cannot model a component or system included in the proposed design explicitly, substitute a thermodynamically similar component model that can approximate the expected performance of the component that cannot be modeled explicitly. The Baseline is supposed to be Same as Proposed Design.

For example, for water source VRF systems, one could approximate the performance using a water source heat pump system. Would this mean the Baseline case should also have the water source heat pump work around?

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Christopher Jones, P.Eng.
Senior Engineer

WSP Canada Inc.
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