[TRNSYS-users] water-water heat pump simulation

[David BRADLEY]

Jacopo,

  This is a little bit tricky; the problem is that the loads you have 
are presumably instantaneous heating and cooling loads. If your delivery 
device were something without a lot of thermal mass (like zonal heat 
pumps or some fan coils) then I would recommend that you impose the 
loads directly onto the liquid stream. However, the radiant floor has a 
lot of thermal mass of its own. I think the best approach would be to 
impose your loads on a lumped capacitance that is tuned to mimic the 
zone. Then you can define a radiant floor using Type653 in order to 
control the temperature of the lumped capacitance that has your original 
building loads imposed upon it.

kind regards,

  David


On 05/16/2022 09:16, Jacopo Valente via TRNSYS-users wrote:
>
> Dear trnsys users,
>
> I’m simulating a ground water source heat pump for residential 
> conditioning system. I have the hourly load profile of the building 
> and i’m not using the type56. However my system has radiant floor as 
> emmiter and i see that it’s possible to use type653 only with building 
> type56. I’m looking for a way to simulate this kind of implant, i try 
> with type 690 but i’m not sure it’s right for a water system. Any 
> suggestions to simulate my implant without type56?
>
> Thank you every all
>
> Best regards,
> Jacopo Valente
>
>
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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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