A 2-m2 window has a surface temperature of 15°C, and the

Chapter 3, Problem 61HP

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QUESTION:

Problem 61HP

A 2-m2 window has a surface temperature of 15°C, and the outside wind is blowing air at 2°C across it with a convection heat transfer coefficient of h = 125 W/m2 K. What is the total heat transfer loss?

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QUESTION:

Problem 61HP

A 2-m2 window has a surface temperature of 15°C, and the outside wind is blowing air at 2°C across it with a convection heat transfer coefficient of h = 125 W/m2 K. What is the total heat transfer loss?

ANSWER:

Solution 61 HP:

Step 1 of 2:-

Here we have to find the total heat transfer loss.

The area of the window is,

.

The surface temperature is,

.

The outside wind temperature is,

.

The convection heat transfer coefficient is,

.

.

The temperature difference is same in both kelvin and celsius scale.

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