[TRNSYS-users] Mathematical description of ASHP Type941

[Matt Duffy]

Dear Zhe Li, 

We apologize the the component does not yet have
documentation. However, it is a straight-forward, and I can summerize
it. Please make sure that you are using the current version, 17.1.03 of
the TESS Libraries. The source code in the ".Tess
ModelsSourceCodeType941.f90", and you can view this in a simple text
editor program. This is an excellent way to see how an output such as
power is calculated. It has all of the equations in an easy to follow
manner in the new f90 code. Also, the "More" buttons in the proforma are
also very helpful for information about the specific variables. It is a
performance-map based component like most all of the other HVAC heat
pump, air conditioner, and chiller component models. There is a
performance map for when it is operating in heating mode, and there is a
performance map for when it is operating in cooling mode. These
performance map external data files are in the "InterpolateData" format
(see the 08-ProgrammersGuild.pdf for more information). Like many of the
other TESS heat pump components, the capacity and power in the data file
(the dependent variables) are normalized, so the user can adjust the
total capacity and power in the parameter of that particular component.


If you have any other specific questions, please feel free to contact
me or TESS technical support about the TESS Libraries. 

Thank you,


Matt 

On 2013-03-07 04:42, Zhe Li wrote: 

> Dear All, 
> 
> Thank
you very much for your time. 
> 
> I have recently built a combined air
source heat pump and solar thermal system for my PhD research study.
After carefully reading the mathematical description (also related
books) of solar thermal system for flat-plate and evacuated-tube
collector, I fully understand how the energy output can be predicted
from TRNSYS. However, I am struggling to understand how the ASHP Type941
is to predict the power output. It is vital for me to understand how
this component works and be able to write into my final PhD thesis. I am
wondering if this mathematical description has been released yet? If it
is, I will be very grateful if somebody could send me a copy of it. 
>

> Sorry, I have asked a similar question before, however, this is so
important that I have no choice but keep asking it. 
> 
> Thank you very
much for your help. 
> 
> Zhe Li 
> Tá an teachtaireacht seo scanta ó
thaobh ábhar agus víreas ag Seirbhís Scanta Ríomhphost de chuid
Seirbhísí Faisnéise, ITBÁC agus meastar í a bheith slán.
http://www.dit.ie [1]
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