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CI-2009 EAc1.3:Optimize Energy Performance—HVAC

Partial Load Calculations & Fan Sizing

Hello, This project is 12 floors served by base building AHU's, pumps, chillers, etc. Our scope was the tenant fitout of each floor while reusing the main base building systems feeding the floors. We installed fan boxes, VAV's, heat pumps and transfer fans. Will the "total tenant space fan & pump sizing" only include the fans that are located on the floors we did work on, or will they have to include the fans and pumps associated with the base building AHU's, Chillers, Boilers, etc.? Also, I have the load calculations from Carrier HAP but am not sure how to get the partial load condition calculations complete. Any advice? Thanks, Nick

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Dylan Connelly
Mechanical Engineer
Integral Group
LEEDuser Expert
342 thumbs up

Thu, 05/09/2013 - 13:29

Nick, We typically use Trane, but I assume you can do it the same way. Instead of running the loads for the worst case time of year. Run the loads for a mild time of year. Such as April. This will give you a partial load condition.

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