[TRNSYS-users] Type 941(Air to water heat pump)

[David BRADLEY]

Muhammad,

   Please refer to the Type941 documentation. It explains how the 
external files and the parameters relate to each other to compute the 
overall capacity and power consumption of the heat pump.

   The evaporator does not really need to be designed more than to 
choose a machine with an appropriate rated capacity. Traditionally that 
might mean adding a safety factor to the peak cooling load (10% is often 
used) and then selecting a machine that will meet that capacity. Also 
bear in mind that Type941 models a single speed (ie single capacity) 
heat pump that is either on or off. Depending on how variable the load 
in your building it, you might want to meet that load with multiple 
smaller heat pumps rather than one big one.

kind regards,

  David


On 03/27/2020 08:02, Muhammad Zeeshan via TRNSYS-users wrote:
> Hello Everyone,
>                             I am working on cooling a building with 
> type 41(air to water source heat pump). The cooling load of the 
> building is 25 tons. I want to know
>
> 1)- how the compressor power will be calculated? as the external files 
> of type 941 contains fractions of compressor power which shows no link 
> to the equations provided in manual. How to link the external file 
> with the provided equations?
>
> 2)-As the cooling load of the building is 25 tons, how to design the 
> evaporator for this building load?
>
> Your help in this regard will be highly appreciated.
>
>
>
> Regards,
> Muhammad Zeeshan
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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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