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Re: [TRNSYS-users] Variable Speed Air Source HP in TRNSYS



Muhammad,

 Can you be a bit more specific about what you mean by "transient state" analysis? Type1271 uses a performance map lookup method. Its compressor is assumed to vary its speed to maintain a constant outlet temperature on the load side. In that the heat pump compressor adjusts to the present load requirements it does do a transient analysis. However, if you are looking for a component that uses a more first principals approach and models the state of the refrigerant in the heat pumps heat exchangers, compressors, and expansion valve then I think you would need to look to a different Type than 1271.


As a side comment, please note that Type1271 is an air (source) to water (load) heat pump, not an air to air heat pump.

kind regards,

 David



On 12/20/2018 07:50, Muhammad Abid via TRNSYS-users wrote:

Hi,


I am a new user to TRNSYS from Ulster University. I would be working for my PhD studies on the topic of variable speed air source heat pump . I found this "Type 1271v2" ASHP from TESS library useful for me.


I am interested in the transient state analysis of the HP. Is this Type suitable for me or i should use some other software(like EES or Matlab) for the transient state analysis?


Best Regards



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