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Abhay, There are a number of ways that you can handle this; the most appropriate one depends a bit on how you are modeling the chiller. If you are modeling an idealized chiller using a cooling type inside Type56/TRNBuild then you can schedule the COOLING Type's capacity using a schedule defined inside TRNBuild. If you are using an external chiller model such as the air or water cooled chiller from the TESS Libraries then you can use Type14 to define a forcing function that has a value of 1 between 7am and 4pm and a value of 0 at other times. The output of the forcing function can then be used for your chiller control signal. I would caution you on running your chiller based only on the time of day. Typically chillers are run as needed in order to maintain a loop temperature (in other words based on a thermostat). If your chiller operates on both a thermostat and on a timer then you can combine two output signals by multiplying one by the other in an equation. It is also highly recommended that you follow through the tutorial in the Getting Started manual so that you get an understanding of the basic process of putting together a TRNSYS simulation. Kind regards, David On 11/10/2013 23:55, Abhay Pratap Singh
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-- *************************** 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 |