Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Kyle, thank you for responding to my post. Your comments are correct - the nominal capacity and the cited COP are indeed at rated conditions, which makes my calculation crude at best. You are also correct that my issue is similar to the referenced post. Specifically, like the creator of that post, I only see sensible loads in the zone sizing and system sizing reports, which are lower than the nominal total capacity by about the same 20% as my sizing factor (1.2). However, as in the cited section from the I/O Reference Manual, I take that difference to be due to the inclusion of latent loads (and, yes, also incorporate the differences between design operating conditions and rated operating conditions).
I am going to work on a thing or two and revise my original post shortly - I still have a core issue, which is that - even using not exactly right capacities and COP values to estimate full load input electric demand on the cooling systems - I would expect the peak coincidence ratio to be much closer to 1/1.2 than to unity given that the sizing run applied a 120% sizing factor.
