Calculation of power
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Question: For 1000L of 40% phosphoric acid at a room temperature of 25 degrees Celsius, how many kilowatts of heating element are required to raise the temperature to 95 degrees Celsius within 40 minutes? ? ?
OK, this is good!!!
Since there is no phase change in this case, the original poster can find the average specific heat capacity of 40% phosphoric acid at room temperature, ranging from 25 degrees Celsius to 95 degrees Celsius, and then use that value to make the calculation. The total heat required is simply divided by time; so it’s best to look up the physical property data and do the calculation oneself! It’s great to be self-reliant – it allows one to learn things and gain knowledge! Each of us can do something very well!
P = W * Cp * (95 – 25) / (2/3)
Cp: average heat capacity, KJ/kg·K
W: weight of phosphoric acid
P: KW
Cp: average heat capacity, KJ/kg·K
W: weight of phosphoric acid
P: KW
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