What is the coefficient of performance of a refrigerator Mcq?

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What is the coefficient of performance of a refrigerator Mcq?

What is the coefficient of performance of a refrigerator?The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.

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What is coefficient of performance of a refrigerator Class 11? Therefore, the coefficient of performance of the given refrigerator is 10.44.

What is a good coefficient of performance?

A good COP for heat pump units starts at about 2.0 for an air source heat pump and about 3.1 for geothermal, but heat pump COP can be well above 4.0 too, as seen in the chart below.

What is the coefficient of performance of a refrigerator Mcq?

The coefficient of performance of a refrigerator is defined as the ratio of the amount of heat removed (Q 2) per cycle to the mechanical work done.

What does the coefficient of performance measure?

The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.

Why is the coefficient of performance greater than 1?

The COP usually exceeds 1, especially in heat pumps, because, instead of just converting work to heat (which, if 100% efficient, would be a COP of 1), it pumps additional heat from a heat source to where the heat is required.

What is coefficient of performance of a refrigeration plant?

The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.

What do you understand by coefficient of performance of refrigerator?

The coefficient of performance or COP of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required. Higher COPs equate to lower operating costs. All India Test Series.

Is higher coefficient of performance better?

Coefficient of Performance (COP) is the efficiency ratio of the amount of heating or cooling provided by a heating or cooling unit to the energy consumed by the system. The higher the Coefficient of Performance the more efficient the system.

What is coefficient of performance Mcq?

Explanation: Coefficient of performance is the performance parameter used in a refrigerator cycle. 4. Which device maintains a body at a temperature higher than the temperature of the surroundings?

Related Questions

What does a high coefficient of performance mean?

Coefficient of Performance (COP) is the efficiency ratio of the amount of heating or cooling provided by a heating or cooling unit to the energy consumed by the system. The higher the Coefficient of Performance the more efficient the system.

Is coefficient of performance the same as efficiency?

Efficiency is a dimensionless obtained by dividing two quantities of same units. The Coefficient of Performance (COP) can depend on numerous other variables and can be used to easily compare the performance of two different units, or the same unit under different conditions.

Why the coefficient of performance can have values greater than unity?

This measure of performance can have a value greater than unity, and it is this fact that makes a heat pump an attractive device. In both the Heat Pump and the Refrigerator the quantity "paid for" is the input work and the "gotten" quantity is heat.

Why is the VAR of cops less than 1?

In the case of vapour absorption system the boiler heat is used as input (usually combination of some other primary purpose like power generation, cooking etc). As the cooling effect is very less than heat input the COP for vapour absorption systems are less than one.

Is a higher or lower coefficient of performance better?

Coefficient of Performance (COP) is the efficiency ratio of the amount of heating or cooling provided by a heating or cooling unit to the energy consumed by the system. The higher the Coefficient of Performance the more efficient the system.

What does coefficient of performance tell you?

The Coefficient Of Performance (COP) is a performance rating that tells us how effective a heat pump or air conditioner is at transfering heat versus the amount of electrical power it consumes.

What is difference between COP and EER?

What is COP and EER? COP is a measurement of the energy efficiency of your air-conditioning unit's heating performance. EER is the ratio of a unit's cooling output relative to its input power.

What is COP compare it with efficiency?

The Co-efficient of performance (COP) is an expression of the efficiency of a heat pump. When calculating the COP for a heat pump, the heat output from the condenser (Q) is compared to the power supplied to the compressor (W).

Why the coefficient of performance of refrigeration systems are greater than unity?

Less work is required to move heat than for conversion into heat, and because of this, heat pumps, air conditioners and refrigeration systems can have a coefficient of performance greater than one.

Can coefficient of performance of refrigerator be greater than unity?

Coefficient Of Performance (COP) represents the amount of heat is removed from refrigerated space for each unit of work supplied. It can be greater than one.

 

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