[TRNSYS-users] Absorption chiller with different refrigerants pairs

[David BRADLEY]

Virk,

  The absorption chiller models in Trnsys are based on performance maps. 
If you know the machine's cooling capacity and COP as a function of the 
inlet chilled water, hot water/steam etc., and cooling water inlet 
temperatures then the working refrigerant doesn't specifically matter 
(it's impact is built into the performance maps). If you do not have 
performance data then you'll need to write a model. Connecting to EES 
via Type66 is certainly an option if EES has the refrigerant properties 
that your model will need. Another alternative is that there is a Trnsys 
kernel function that allows Types to call a set of routines called 
CoolProp. That may also be an option. My advice would be to work out how 
you'd like to model the absorption chiller (ie determine what your 
algorithms are going to be). Once you have a good sense for how your 
model functions and what resources it needs (Matlab routine, EES 
properties, python resources, Excel etc.) then it would be a relatively 
easy decision as to how to go about implementing the model in Trnsys.

kind regards,

  David



On 3/9/2023 5:57 PM, Sajid Mehmood via TRNSYS-users wrote:
> hello everyone,
>
> I want to model absorption chiller with different refrigerant pairs? 
> Could you please guys guide me how to do this in TRNSYS? Initially i 
> am thinking to link EES with TRNSYS (not sure if it is right 
> approach). If someone could guide in detail, it will be much appreciated.
>
> Thanks a lot!!!
>
> Regards,
> Virk
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-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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