http://blog.naver.com/kth386/130031341239

1 kw = 1000 w

1 W = 1 J/ sec

1 cal = 4.2 J

1 J/sec = 0.238 cal / sec = 0.238 * 60 * 60 cal / h = 856.8 cal/ h = 0.8568 kcal/ h


그러므로

1 kw = 1000 w = 1000 j/s = 1000 * 0.8568 kcal/h = 856.8 kcal/h 

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