· The temperature inside a refrigerator is
1,°C and the room temperature is t,°C.
The amount of heat delivered to the
room for each joule of electrical energy
consumed ideally will be [NEET-2 (2016)
1, +273
12 + 273
1)
2)
1-1
1-1₂
t+tz
3)
A)
1.
1-1₂
1 + 273
Answers
Answered by
2
Answer:
Coefficient of Performance of Refrigerator COP=
W
Q
c
=
t
1
−t
2
t
2
+273
Temperatures should be written in kelvin.
We have to find heat given to room per unit electrical energy.
Room is at higher temperature and act as hot reservoir. And electrical energy is the input energy shown as W.
So, we have to find
W
Q
H
Again, Q
H
=Q
c
+W
⟹
W
Q
H
=
W
Q
c
+1
=
t
1
−t
2
t
2
+273
+1
⟹
W
Q
H
=
t
1
−t
2
t
1
+273
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