I agree with Chen – the software allows you to create numerous operating conditions, from which you can derive the needed curves.
On the other hand, most design and sales engineers have no idea what you need for an energy model, so you might try preparing several tables which show the appropriate variables as axes and ask the Trane representative or design engineer to fill in the blanks.
Shown below is a sample for a refrigerated warehouse compressor for which I needed curve data recently. I provided the table and the first two columns; the compressor manufacturer filled in the rest. (actually, they provided power as kW and I converted to %). You will need several of these, but this gives the concept. You will also need to decide how many data points are needed. More data is harder for the person from whom you are asking for help; less data may result in less accuracy.
My approach is to make it easier for the people from whom I am asking help – that makes it more likely that they will help me in the midst of their other work - especially since my requests do not normally increase their income J
James V Dirkes II, PE, BEMP, LEED AP
www.buildingperformanceteam.com
Energy Analysis, Commissioning & Training Servic
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