Question

The temperature inside a refrigerator is t2 degree Celsius and the room temperature is t1 degree Celsius. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be​

Answer 1

The electrical energy consumed ideally will be (t1 + 273)/t1-t2

Explanation:

For refrigerator,

Heat given to high temperature/heat taken from lower temperature = T1/T2

Q1 / Q2 = (t1 + 273) / (t2 + 273 )

Q1 / (Q1-w) = (t1 + 273) / (t2 + 273)

1 - (w / Q1) = (t2 + 273) / (t1 + 273 )

w/Q1 = (t1 - t2) / (t1 - 273 )

As the amount of energy is 1 joule so,

Q1 = (t1 + 273) / (t1-t2)

Answer 2

Answer:

solve by using formula of coefficient of performance

Explanation:

B=1-q2/q1