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Adam, You should be in contact with your TRNSYS distributor to get the latest TESS Libraries release as it includes documentation for Type941. To answer your specific questions, yes, you do still have to provide a cooling data file to the model even if you're not going to use the heat pump in cooling mode. You don't need to worry about the contents of the file and can simply use the one that is provided by default. The data in both the heating and cooling performance files are normalized. Each performance value is divided by that same performance value at the heat pump's rated condition. The value at the rated condition is provided as a parameter to the model. For example, if the heat pump's rated heating capacity is 0.6kW and its heating capacity at current operating conditions is 0.8 kW then the normalized heating capacity value entered into the data file would be 0.8/0.6=1.333. As a final note, when heat pump performance data files are normalized they end up looking very similar to one another so chances are that you can use the data file that is provided as an example and be quite close to the actual performance of the heat pump that you are planning to use. Best, David On 12/17/2014 08:44, Adam O' Donovan
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 |