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Johnson, Apologies for the delay in responding. There are a number of generic models in TRNSYS that would suit your needs (such as Type42, or even a simple equation). The difficulty that you face is in obtaining realistic information from the manufacturer of the transformers, UPS, and PDU. They should be able to give you some information about the heat generated by their equipment under normal operating conditions, including standby mode which you will need when the data center is running at part load (incidentally, I have never seen this situation! Data centers that I have run across basically use the same amount of energy and dump the same amount of heat into the space all the time!) Once you obtain the performance and efficiency of the equipment at part load then you need to add a gain to the Type56 zone that represents your data center. You can specify the gain either as a schedule in TRNBuild or as an input. Best, David On 10/8/2012 22:13, Johnson Chua wrote:
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |