Chiller Efficiency

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P.Nithin Kumar Commentator Join Date: Dec 2010 Location: Hyderabad,Telangana , India Posts: 80 Good Answers: 1	Chiller Efficiency 04/05/2014 4:18 PM
	We had a Chiller of 15 tr capacity (water cooled condensor). I want to know the water flow required for the condensor and also for evaporator to get the maximum efficiency Out from the Chiller. Refrigerant used is r 22 , 15 kw motor is connected to the reciprocating compressor. __________________ When Emotions runs high ,Intellectual wont work
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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33392 Good Answers: 1817	#1 Re: Chiller efficiency 04/05/2014 4:27 PM
	Roughly speaking 2-3 GPM per ton.... "There are countless design parameters that influence this design issue. Each must be identified and defined in order to accurately make a comparison of 2 versus 3 gpm per ton condenser water flow. No matter how carefully these design parameters are selected, they would never all apply to every installation and any attempt to quantify the impact of each parameter would only confuse the issues. "... http://www.districtenergy.org/06CampConfProceeding/Track_A/6A1_Liegois%20.pdf http://www.engineeringtoolbox.com/heat-condenser-evaporator-d_881.html __________________ All living things seek to control their own destiny....this is the purpose of life
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#2 Re: Chiller efficiency 04/05/2014 5:17 PM
	This is déjà-vu all over again. The most common rule of thumb I've seen is 3 GPM/TR, but you could do some intersecting-curve balances if enough performance data are available. Perhaps more to the point in your case is to determine if the refrigerant charge is correct. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 Re: Chiller efficiency 04/05/2014 5:56 PM
	Look at the specifications of the chiller. I'd think the maker would make the chiller as efficient as they could. Why do you think you could make it better, when you have little understanding of the process? Hire someone!
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Fredski Guru Join Date: Feb 2011 Posts: 7025 Good Answers: 207	#4 Re: Chiller efficiency 04/05/2014 7:43 PM
	when you call the manufacturer (eyes rolling)besides chilled water flow rate ask them about CFM parameters for your cooling coils so you move the correct amount of air over them in your quest for maximum efficiency.
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mrswamy Guru Join Date: Jun 2008 Location: Oman Posts: 612 Good Answers: 14	#5 Re: Chiller Efficiency 04/06/2014 12:29 AM
	Thumb rule for chiller circuit is 3 GPM per ton and for condenser circuit it is 4 GPM per ton. Efficiency of chiller and cooling tower depends upon many factors. I suggest you to read any good HVAC books and also read the O & M of the plant for its proper operation.
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pritam Guru Join Date: Aug 2008 Location: City of destiny, INDIA Posts: 775 Good Answers: 67	#6 Re: Chiller Efficiency 04/07/2014 4:55 AM
	What the O & M Manual say? You will also get tips there for getting maximum efficiency.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#7 Re: Chiller Efficiency 04/07/2014 3:21 PM
	What do the commissioning records say? __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Fredski (1); lyn (1); mrswamy (1); pritam (1); PWSlack (1); SolarEagle (1); Tornado (1)

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