[TRNSYS-users] TYPE 666 Chiller Queries

[LAHO DESIGN]

Hi,
can you please send me your simulation to see what did you link to type 666

thanks
edy




________________________________
 From: #YEO KEAT KEE# <YEOK0031 at e.ntu.edu.sg>
To: "trnsys-users at cae.wisc.edu" <trnsys-users at cae.wisc.edu> 
Sent: Wednesday, March 27, 2013 5:44 AM
Subject: [TRNSYS-users] TYPE 666 Chiller Queries
 

 
Dear Fellow Trnsys Users, 
 
I am running a parametric study using the TYPE 666 Chiller and I have some unexplainable observations with regards to the Chiller COP. 
 
It seems that the chiller COP has a lot of unexplainable spikes and fluctuations throughout the simulated year. 
 
This is observed despite 
1.        An almost constant part load ratio (load) handled by the chiller. 
2.       Entering Condenser Water Temperature to the chiller remains almost constant, with little fluctuations.  
3.       Power consumed by the chiller remaining almost constant. 
 
I understand that in TRNSYS, COP=Qmet/P, if both the Qmet and P are relatively constant, what could be causing the spike observed in the COP ?
 
I have attached some screen shots from the results of my simulation. 
 
Has anyone encountered the same situation before ? Or any advice on why this is happening ?
 
Best Regards,
Yeo 
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