Conversion of Cooling Capacity From Watts to Tons

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Signode Power-User Join Date: Aug 2007 Location: Lahore Posts: 364	Conversion of Cooling Capacity From Watts to Tons 03/30/2010 6:28 AM
	Dear Friends, We have been working for installation of Air Conditioners with the panels of our Corrugator machine. A vender calculated the AC with following info; Useful cooling output 1000watts Rated current 2.5Amp If I calculate the power input by using 2.5Amp, this is 412Watts (220V, Cos p 0.75) then what is 1000watts? We know the capacity of AC only in ton. How to convert the watts into ton? A little bit confusion need to be cleared. __________________ Don't assume any thing, always check/ask and clear yourself
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Anonymous Poster	#1 Re: Conversion of Cooling Capacity From Watts to Tons 03/30/2010 9:36 AM
	Hello: To convert these units of power, use: 1 ton = 3516.8528 watt Plain and simple!
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dac1267 Power-User Join Date: Jun 2009 Location: California Posts: 106 Good Answers: 19	#2 Re: Conversion of Cooling Capacity From Watts to Tons 03/30/2010 11:37 AM
	1 ton = 12000 BTUH = 3516 W It seems to me you already have the AC capacity in watts (1000W) so I suspect you probably have a 1/2 ton unit. The actual sensible capacity of the unit will vary depending on ambient conditions, so the vendor may have run a selection based on your specific conditions. It is not unusual for the sensible capacity to be only 2/3 of the total capacity, especially in humid areas. The ratio of cooling power to energy consumed is the coefficient of performance (COP), so if the cooling output is 1000W and the input is 412W then the COP is 2.4 (if it actually draws its rated current). COP by itself is not very useful, but it does give an idea of the efficiency of the unit.
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jhunter1972 Power-User Join Date: Mar 2010 Posts: 132 Good Answers: 7	#3 In reply to #2 Re: Conversion of Cooling Capacity From Watts to Tons 03/30/2010 9:25 PM
	Very good answer dac1267. jhunter1972 __________________ jhunter1972
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