[TRNSYS-users] Air heat pump (Type938) - performance data with %RH

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Dear TRNSYS users,

I'm trying to perform simulation using *air source heat pump *(Type938).
I've contacted several manufacturers but could not obtain complete
performance data.
None of them has data as function of *%RH* *of outside air*, air temp.
and water temp. leaving heat pump.

Can anyone point out a manufacturer with a desired data or share dat file?

kind regards
Michal Klimas
Poznan University of Technology

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Hi Michal,

I am also using air source heat pump type ( 966). I faced the same issue.

Sandeep Chahal

UAB School of Engineering

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Joined: 2016-04-05
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Michal, Sandeep, et al.
One thing that you can do is to take the shape of the dependence of
performance on RH from the sample data files and apply it to your
specific data files. The shape of these curves does not change much from
heat pump to heat pump.
kind regards,
David

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Have you tried Mitsubishi? Also, some other simulation programs may have
free resources on their websites. EnergyPlus have some interesting datasets
when you install the program (it's free so easy to do). Sometimes a
manufacturer will have curves, sometimes tables. You can switch from one
format to the other with a bit of effort. Creating normalized curves for
cooling machines is probably the hardest thing you will experience
regarding building simulation, but once you figure it out and have a
reasonable spreadsheet, it's not that bad. Good luck.
Jean

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Thank you David and Jean for your reply. I will try to do as you said.

Robin, as you pointed out, it is difficult to simulate ASHP with given data
from manufacturers I wish there were some models with full data already in
TRNSYS ;)

Regards,

Michal Klimas

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