[TRNSYS-users] craeting new type 107, absorption chiller data

David BRADLEY d.bradley at tess-inc.com
Wed Nov 14 08:43:52 PST 2012

Dear Talib,
   The method of adding data to extend the range of the performance file 
is correct. However, you need to also extend the actual performance data 
as well. For example, the provided data file shows a normalized capacity 
of 1.0469 and a fraction of design energy input of 0.98 for the 
following inlet conditions:

Fraction of Design Load: 1.0
Chilled Water Setpoint: 10.0 C
Entering Cooling Water Temperature: 32.2 C
Inlet Hot Water Temperature: 116.11 C

simply changing the inlet hot water temperature range so that the top 
value is 95C would result in the same performance (normalized capacity 
of 1.0469 and a fraction of design energy input of 0.98) for a different 
set of inlet conditions. More likely, the performance of the chiller 
would be quite different at such a low inlet hot water temperature. Some 
chillers may simply not be able to operate at lower inlet hot water 

On 11/14/2012 07:16, Talib Ahmadu wrote:
> Dear all,
> I am using trnsys 16 to model a cooling system. The absorption chiller 
> i intend to model has its generator temperature outside the range of 
> the default temperature of type 107 data. What i have done was to edit 
> the inlet hot water temperature column of performance data of type 107 
> from (108.89C to 116.11C) to another range (75C to 95C), to conform 
> with the chiller i intend to model. Please i want to know if this is 
> correct.
> Thanks.
> T. Ahmadu
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users

Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

d.bradley at tess-inc.com


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20121114/d3c21c80/attachment-0001.htm>

More information about the TRNSYS-users mailing list