How to convert tr to kw?

tan of refrigenration
to killo watt

Answer:
Converting "tons" of cooling capacity to kW depends on the efficiency of the equipment.

For residential type central AC units, a reasonably close conversion is 1 kW per ton.


Residential cooling equipment often has an Energy Efficiency Rating (EER). The EER is defined as cooling capacity ÷ input watts. In this case the cooling capacity units are BTU/hr -- where 1 ton equals 12,000 BTU/hr. Use algebra to solve for the input wattage.

Here is an example:

An 8,000 BTU/hr window AC unit has an EER rating of 9.

8,000 BTU/hr ÷ Input wattage = 9
8,000 ÷ 9 = 889 watts


For large commercial or industrial applications, the conversion factors can be as low as 0.7 kW per ton. However in those cases the value does not include the air handling equipment.


*** Comments for those who gave me a "Thumbs Down" ***

If the question is related to the impact on an electric bill due to HVAC equipment, then my answer is 100% correct.
To convert (TR) power units to( KW) power units as follows:

1 (TR) =3.5137255( KW)
this is not a related to the equipment and it is efficiency but if you r talking about electricity consumption refer to the equipment manufacturer data sheets
*tr=Ton of Refrigeration.
*Let me define TR:

A rate of cooling that is equivalent to the removal of heat at 200 Btu/min (200 kilojoules/min), 12,000 Btu/h (13 megajoules/h), or 288,000 Btu/day (300 MJ/day). This unit of measure stems from the original use of ice for refrigeration. One pound of ice, in melting at 32°F (0°C), absorbs as latent heat approximately 144 Btu/lb (335 J/kg), and 1 ton (0.9 metric ton) of ice, in melting in 24 h, absorbs 288,000 Btu/day (300 MJ/day).
*In Europe, where the metric system is used, the equivalent cooling unit is the frigorie, which is a kilogram calorie, or 3.96 Btu. Thus 3000 frigories/h is approximately 1 ton of refrigeration.
*A standard ton of refrigeration is one developed at standard rating conditions of 5°F (−15°C) evaporator and 86°F (30°C) condenser temperatures, with 9°F (−13°C) liquid subcooling and 9°F (−13°C) suction superheat.

*Unit of refrigeration
Domestic and commercial refrigerators may be rated in kJ/s, or Btu/h of cooling. Commercial refrigerators in the US are mostly rated in tons of refrigeration, but elsewhere in kW. One ton of refrigeration capacity can freeze one short ton of water at 0 °C (32 °F) in 24 hours. Based on that:

Latent heat of ice (i.e., heat of fusion) ≈ 144 Btu / lb (or 334.5 kJ/kg)
One short ton = 2000 lb
Heat to be extracted = 2000 * 144 = 288000 Btu / 24 hours = 12000 Btu/hour
= 200 Btu / Minute
1 ton refrigeration
= 200 Btu / minute
= 3.517 kJ/s
= 3.517 kilowatts
A much less common definition is:

1 tonne of refrigeration is the rate of heat removal required to freeze a metric ton (i.e., 1000 kg) of water at 0 °C in 24 hours.
Based on the heat of fusion being 334.5 kJ/kg,

[1 tonne of refrigeration
= 13,938 kJ/h
= 3.872 kW. ]
As can be seen, 1 tonne of refrigeration is 10% larger than 1 ton of refrigeration.

Most residential air conditioning units range in capacity from about 1 to 5 tons of refrigeration.
Source(s):
http://www.answers.com/topic/refrigerati...
1 ton of refrigeration = 12,000Btu/hour.
100 Watts = 341 Btu/hour
Conversion factor = Watts x 3.41 = Btu/hour.
Therefore 12,000 Btu/hr = 12,000 ÷ 3.41 = 3.5 kW

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