Is the coefficient of performance of a refrigerator constant?
(N/A) No,the coefficient of performance $(COP)$ of a refrigerator is not constant. The $COP$ is defined as $\beta = \frac{T_2}{T_1 - T_2}$,where $T_2$ is the temperature inside the refrigerator and $T_1$ is the temperature of the surroundings. As the inside temperature $(T_2)$ decreases,the value of the $COP$ also decreases.
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Similar Questions
An ideal refrigerator has a freezer at a temperature of $-13^{\circ} C$. The coefficient of performance of the refrigerator is $5$. The temperature of the air (to which heat is rejected) is:
The coefficient of performance of a refrigerator working at a temperature of $27^{\circ} C$ is $5$. Find the temperature inside the refrigerator. (in $K$)
Difficult
View Solution$A$ refrigerator works between $4^{\circ}C$ and $30^{\circ}C$. It is required to remove $600 \, cal$ of heat every second in order to keep the temperature of the refrigerated space constant. The power required is ....... $W$ (Take $1 \, cal = 4.2 \, J$)
MediumNEET 2016
View SolutionThe equation $\beta = \frac{Q_2}{Q_1 - Q_2}$ is true or false?
Easy
View SolutionDetermine the coefficient of performance for the given temperature limits.
$T_{1} = 27^{\circ}C$ [outside fridge]
$T_{2} = -23^{\circ}C$ [inside fridge]
$T_{1} = 27^{\circ}C$ [outside fridge]
$T_{2} = -23^{\circ}C$ [inside fridge]
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