[TRNSYS-users] Queries about radiator Type 1231 combined with variable capacity heat pump

[David BRADLEY]

Khoa Le,

  I would encourage you to look at the Type1231 documentation and/or 
source code. It is not a complicated Type mathematically and I suspect 
that you could use its governing equations to adjust the model's 
parameters and obtain the kind of delta T that you are observing in your 
measurements.

kind regards,

  David



On 04/05/2018 18:05, Le Khoa via TRNSYS-users wrote:
> Hi everyone,
>
> I have modeled the system comprising of a variable capacity heat pump 
> (custom component) transferring heat to the house via radiators Type 
> 1231 (TESS library). From the simulation results, the differences 
> between entering and leaving water temperature of radiators are within 
> 7 Celcius, meaning the heat pump quickly operates at the lowest part 
> load. However, I want to increase those temperature differences about 
> more than 10 Celsius, as observed from our measurement results, in 
> order to force the heat pump to work at higher load. I have tried to 
> alter the parameters of Type 1231 but it seems to be uninfluenced. I 
> see if changing the flow rate can alter those differences, but that is 
> not right for my model which affects the heat pump side.
>
> Could you please help me if possible?
>
> Thank you.
>
> Khoa Le.
>
>
>
>
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

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

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