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현재 위치

The time it takes to raise the temperature of water with an electric heater

작성자 Uploader : milinae 작성일 Upload Date: 2019-11-22변경일 Update Date: 2022-06-17조회수 View : 99

The time T (s) it takes to raise the temperature of water in m (kg) from t1 (℃) to t2 (℃) with an electric heater with an electric capacity of P (kW) can be calculated as follows.

It is assumed that the specific heat of water is C = 4.2 kJ/kg*K, and all the heat generated by the electric heater is used to raise the temperature of the water.

The required amount of heat Qn (kJ) is

Qn = mCΔt = m*C*(t2-t1)

Since 1W = 1J/s, the amount of heat Q (kJ) generated by the heater during T (s) is,

Q = P*T

Therefore,

m*C*(t2-t1) = P*T

T = m*C*(t2-t1)/P

*** 참고문헌[References] ***

T = m*C*(t2-t1)/P

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변수명 Variable	변수값 Value	변 수 설 명 Description of the variable

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현재 위치

The time it takes to raise the temperature of water with an electric heater

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