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Dear all,
I am working on a heating system for a building that consists of an air-source heat pump (type 954a), PV arrays, an inverter (type 48b), and a battery (47b). The issue I am facing is that, to prevent the software from displaying an "invalid floating point operation" error, I have to multiply the total energy input of the heat pump by -1 before connecting it to the inverter. I suspect this is causing the battery to not discharge at all—it only charges but does not discharge.
I believe this issue arises because the input energy to the heat pump is negative and is not being considered by the battery, though I am not entirely sure. I would greatly appreciate any insights or suggestions on how to resolve this problem.
Kind regards,
The heat pump model computes the required power consumption. That value would have to be given to Type48 using whatever sign convention Type48 expects as a load. If it's sign convention is that a load is a negative number then you are correct to multiply the heat pump's power requirement by -1 before passing the value to Type48. I am concerned about the invalid floating point error; that is usually a sign that there is a problem in the code that we need to address at least to generate a more sensible error. Can you please send the *.tpf that you are working with to techsupport@tess-inc.com. Please include any files needed in order to run the simulation (weather, heat pump data files, etc.) as well as the *.lst and *.log files that are generated when you run the project.
thank you in advance,
David
@davidbradley
Dear David
Thank you very much for your response. I have sent you the complete information. If you need any other files, please email me at Alirezakooshesh1993@gmail.com. I appreciate your cooperation in advance.
Kind regards
Alireza
