[TRNSYS-users] Cooling tower type 51b

[Jeff Thornton]

Janeet, 

The documentation for Type 51 provides an example on how to use the
model to generate the mass transfer coefficients based on a set of
published inlet and outlet conditions. Please refer back to that section
for answers to your question. The documentation also references the
ASHRAE methodology for the cooling tower and there you can find typical
ranges for these parameters. Most times I just go to the manufacturer
website, get the performance at a bunch of inlet conditions, and use the
model to generate the coefficients automatically. As for the absorption
chiller, if you can't get the manufacturer to provide the information
(some do and some don't) then you'll have to rely on typical part load
curves for the type of chiller that you are considering. 

Jeff 

---
Jeff Thornton
President - TESS LLC
3 N. Pinckney Street, Suite 202, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton at tess-inc.com

On 06/13/2020 9:32 pm, janeet anand via TRNSYS-users wrote: 

> Dear users, 
> 
> I am simulating an absorption chiller with a cooling tower. 
> 1. I have gone through the mathematical models for the type 51b, however was unable to find data on the mass transfer constant & mass transfer exponent parameters. Please advise how or where to refer to extract the data for these parameters. If available, I would appreciate it if you could share an example project that validates the hand calculations and the simulation of the type 51b to work with absorption chiller. 
> 2. Regarding the type 107, I have been contacting manufacturers to provide the part load performance characteristics but none have the data available. Please advise how we can generate the part load performance of the absorption chiller as part of the input file to the type 107. 
> 
> Thank you in advance. 
> Janeet Anand 
> MSc. Energy 
> 
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