An industrial heat pump operates between the temperatures of 27-C and -13-C- The rates of heat addition and heat rejection are 750 W and 1000 W- respectively- The COP for the heat pump is

Given data: T_1=27^∘C=(27+273)K=300 K T_2= 13^∘C = ( 13+273) K= 260 K Q_2= 750 W Q_1 = 1000 W (COP)_HP=Q_1Q_1 Q_2 for actual heat pump =10001000 750=100 ...

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Standard XII

Chemistry

Internal Energy

An industrial...

Question

An industrial heat pump operates between the temperatures of $27^{\circ} C a n d - 13^{\circ} C .$ The rates of heat addition and heat rejection are 750 W and 1000 W, respectively. The COP for the heat pump is

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Solution

The correct option is C 4.0
Given data:

$T_{1} = 27^{\circ} C = (27 + 273) K = 300 K$

$T_{2} = - 13^{\circ} C = (- 13 + 273) K = 260 K$

$Q_{2} = 750 W$

$Q_{1} = 1000 W$

$(C O P)_{H P} = \frac{Q_{1}}{Q_{1} - Q_{2}}$ for actual heat pump

$= \frac{1000}{1000 - 750} = \frac{1000}{250} = 4$

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An industrial heat pump operates between the temperatures of 27∘C and −13∘C. The rates of heat addition and heat rejection are 750 W and 1000 W, respectively. The COP for the heat pump is

The correct option is C 4.0Given data: T1=27∘C=(27+273)K=300K T2=−13∘C=(−13+273)K=260K Q2=750W Q1=1000W (COP)HP=Q1Q1−Q2 for actual heat pump =10001000−750=1000250=4

An industrial heat pump operates between the temperatures of $27^{\circ} C a n d - 13^{\circ} C .$ The rates of heat addition and heat rejection are 750 W and 1000 W, respectively. The COP for the heat pump is

The correct option is C 4.0
Given data:

$T_{1} = 27^{\circ} C = (27 + 273) K = 300 K$

$T_{2} = - 13^{\circ} C = (- 13 + 273) K = 260 K$

$Q_{2} = 750 W$

$Q_{1} = 1000 W$

$(C O P)_{H P} = \frac{Q_{1}}{Q_{1} - Q_{2}}$ for actual heat pump

$= \frac{1000}{1000 - 750} = \frac{1000}{250} = 4$