Hello Everyone,
In a project in Tashkent, the proposed HVAC system for a data center uses an air-cooled chiller with free cooling (enabled by the local climate). However, per ASHRAE 90.1-2010 Appendix G, the baseline system is System 8 (water-cooled chiller), which has a higher default COP/IPLV than the air-cooled chiller.
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Should the baseline model include free cooling?
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Since free cooling is part of the proposed design’s efficiency strategy, but Appendix G does not explicitly mention free cooling for System 8, should it still be excluded from the baseline?
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LEED V4 mentions about creating 2 models, one for building energy cost and other for IT equipment energy cost. Also, it mentions developing 2 set of IT load models, one at the maximum estimated IT load rating and the second at the startup IT rating expected at the time of commissioning. I am a bit confused now, do we need to develop 4 different models? Can anyone make me understand the whole requirement in simple terms!
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The process load icludes both unregulated and IT equipment loads. We define them as total equipment power density, space by space. Now, the output summary report will be a amalgamation of both unregulated and IT equipment energy consumption. How do you suggest to proceed in this case, as segregation is next to impossible?
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Thanks in advance and appreciate your responses!
