[TRNSYS-users] Type 53

[papia sultana]

Hi Akif,
I am trying to model a similar application as yours and also trying to 
understand your problem. Is it possible for you to share a chiller 
performance input file with me in terms of X, Y and Z? I am facing 
grammatical error generating this input file. Later I may wish to run the 
program using your data.

Thank you.
Papia

>From: trnsys-users-request at engr.wisc.edu
>Reply-To: trnsys-users at engr.wisc.edu
>To: trnsys-users at engr.wisc.edu
>Subject: TRNSYS-users Digest, Vol 27, Issue 30
>Date: Sat, 24 Mar 2007 11:39:54 -0500
>
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>Today's Topics:
>
>    1. Type 53 (Cagatay Berky?rek)
>    2. type 94a ( ?????? ????????????? )



>From: Cagatay Berkyürek <akif.c.berkyuerek at tu-berlin.de>
>To: <trnsys-users at engr.wisc.edu>
>Subject: [TRNSYS-users] Type 53
>Date: Fri, 23 Mar 2007 18:53:27 +0100
>
>
>Hello everybody,
>
>
>
>I am modelling a centrifugal chiller with trnsys type 53. I let the model 
>to read the external data file, which is composed of X, Y and Z values as 
>usual. The model works and gives the table of results which is composed of 
>power, cooling load, water flows, COP…etc. But I have some problems and 
>also questions:
>
>1.	In my simulation model I define the evaporator leaving water 
>temperature, evaporator water flow rate and condenser water flow rate as 
>variables, I let type 53 to read these variables from the tables (for each 
>variable one table composed of 20 different values) that I created by using 
>data reader type 9a and I link these data readers to type 53 and printer 
>type 65b adequately. Do you see any fundamental mistake with my model 
>logic?
>2.	In the case when I don’t use any variable using a data reader and just 
>enter the parameter and input values and let the model read the external 
>data file, I get only one constant result for each output value and the 
>results in my graphic are only straight lines! I have the feeling that, the 
>model should give various results for each output because of the 
>definitions of X, Y and Z in the external data file. Could you write me 
>your comment about this?
>3.	My biggest problem is that the chiller power results calculated by the 
>model are not same with the power values in the curve-fit    results which 
>are calculated according to the X, Y and Z values in the external data 
>file. My curve-fit results table is composed of only chiller power, but 
>theoretically it should be composed of ∆T, Load and COP values, isn’t 
>it? Where does this difference come from?
>
>Your help would be greatly appreciated. Thanks in advance.
>
>
>
>Dipl.-Ing. Cagatay Berkyürek
>
>
>
>Technical University of Berlin
>
>Institute of Energy Engineering
>
>Marchstr. 18
>
>10587 Berlin/Germany
>
>Tel: 030/314-28483
>
>E-mail: akif.c.berkyuerek at tu-berlin.de
>





>From: "Êþóôáò ÏñäïõìðïæÜíçò" <kordou at gmail.com>
>To: TRNSYS-users at engr.wisc.edu
>Subject: [TRNSYS-users] type 94a
>Date: Sat, 24 Mar 2007 18:39:14 +0200
>I am trying to simulate two pv, one with shade.
>
>The program works fine, but, while the Pv module, that i am using is 275 W,
>the output of Type94a gives me more...
>If I simulate to 29 kW for example with 72 of this modules in summer i have
>about 60 kW....
>
>Any Ideas how to correct this..
>
>
>Thank You
>
>Ordoumpozanis Kostas
>Kozani, 24/03/2007
>Greece..


><< pv.rar >>








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