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25th June 2003 10:11 #1Registered User
Join Date: Aug:2002
Location: Plovdiv
Posts: 686
, , : , 1 KW, 3KW ( )
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25th June 2003 10:16 #2
, / BTU kJ
The British thermal unit (Btu) is a nonmetric unit of heat, used in the United States and, to a certain extent, the UK. The SI unit is the joule (J), which is used by most other countries. 1 Btu is defined by the amount of heat required to raise the temperature of one pound avoirdupois of water from 63oF to 64oF. It is often used to describe the heat value of fuels and heating and cooling system capacities.
1 Btu is approximately:
252.0 calories,
778 ftlb,
1,055 joules
BTU KW/h, kato
1 Btu = 0.293 W/h
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Last edited by Tarambuka3500; 25th June 2003 at 10:24.
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25th June 2003 10:30 #3Registered User
Join Date: Aug:2002
Location: Plovdiv
Posts: 686
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3 * 0,3 () = 1 KW ( )
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25th June 2003 12:13 #4
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25th June 2003 12:23 #5
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26th June 2003 00:41 #6Registered User
Join Date: Jan:2003
Posts: 101
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-, "" . , 273 C "" . . 273 C 272.99(9) .




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