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9 June, 02:00

What is the internal heat gain, in kW, from a factory with 20 kW of lighting (surface-mounted), 10 kW of running motors, and 10 people doing light benchwork?

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  1. 9 June, 02:30
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    Internal Heat Gain = 35 KW

    Explanation:

    The internal heat gain can be calculated as:

    Internal Heat Gain = Heat gain due to lights + Heat gain due to motor + Heat gain due to people

    Here, we assume an average heat gain of 500 W per person. Therefore,

    Heat gain due to people = (0.5 KW) (10)

    Heat gain due to people = 5 KW

    Therefore, using values in the equation, we get:

    Internal Heat Gain = 20 KW + 10 KW + 5 KW

    Internal Heat Gain = 35 KW
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