Question

The inner and outer surface temperature of a glass window 10 mm thick are 25 and 5 degree-C, respectively. What is the heat loss through a 1 m x 3 m window

Answer 1

The heat loss is
`H = 8400\ W`

Step-by-step explanation:

From the question we are told that

The thickness is
`t = 10 \ mm = 0.01 \ m`

The inner temperature is
`T_i = 25 ^oC`

The outer temperature is
`T_o = 5 ^oC`

The length of the window is L = 1 m

The width of the window is w = 3 m

Generally the heat loss is mathematically represented as

`H = (k * A * \Delta T)/(t)`

Where k is the thermal conductivity of glass with value
`k = 1.4\ W/m \cdot K`

and A is the area of the window with value

`A = 1 * 3`

`A = 3 \ m^2`

substituting values

`H = (1.4 * 3 * (23-5))/(0.01)`

`H = 8400\ W`