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Re: [TRNSYS-users] CO2 Heat pump

Mohamed,

Most HVAC devices in TRNSYS that use a refrigerant (heat pumps, chillers, etc.) are typically modeled using the concept of a look-up performance data file approach.  The very short timesteps required to accurately model the dynamics of a refrigeration cycle would cause many simulation to run a long time.  I'm not sure what you are trying to accomplish with your research but if it's a detailed study of the CO2 cycle then I would recommend a program like EES (which can couple with TRNSYS).  If you are just wanting to use a CO2 heat pump in your studies then I would suggest finding performance data for the unit that you are considering and then building a performance map and using one of the existing HVAC components.

 

Jeff

 

---
Jeff Thornton
President - TESS LLC
3 N. Pinckney Street, Suite 202, Madison WI USA 53703
Office: (608) 274-2577  Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton@tess-inc.com

On 01/19/2021 7:55 am, Mohamed Tawfeek via TRNSYS-users wrote:

Hello,

 

I am trying to generate a model that includes CO2 heat pump in Trnsys. I wonder if some module already exists. I also can’t find CO2 refrigerant in TYPE 58 (refrigerant and system properties) Does it exist in a different module or can I purchase it extra?

 

Thanks for your help

 

 

Med vänlig hälsning,

Mohamed Tawfeek

Energikonsult

+46 (0) 76-577 23 18

 

www.sens.se

 


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