What is the formula of coefficient of performance of refrigerator?

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What is the formula of coefficient of performance of refrigerator?

What is the formula of coefficient of performance?The coefficient of performance of the fridge is the refrigerating effect per cycle, Q1, divided by the net work done on the fridge per cycle, and, for a Carnot cycle it can be calculated from T1/(T2 − T1).

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What is the formula of COP? COP (Coefficient of Performance)
COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. For example: A given heat pump used for air cooling has a COP = 2.

What is coefficient of performance of a refrigerator?

The coefficient of performance, COP, of a refrigerator is defined as the heat removed from the cold reservoir Qcold (i.e., inside a refrigerator) divided by the work W done to remove the heat (i.e., the work done by the compressor). The COP strongly depends on outside temperature and required indoor temperature.

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.

What is the formula of refrigerator?

For a refrigerator the coefficient of performance is COP = Qlow/(-W). Details of the calculation: (a) COP = Qlow/(-W). (-W) = Qlow/COP = 120/5 J = 24 J.

What is COP in refrigeration formula?

You want to build a refrigerator or an air conditioner. For such a device we define the coefficient of performance COP as the ratio of the amount of heat removed at the lower temperature to the work put into the system (i.e. the engine). COP = Qlow/(-W) = Qlow/(Qhigh – Qlow).

What is the unit of COP?

COP (Coefficient of Performance)
COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. For example: A given heat pump used for air cooling has a COP = 2.

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 is coefficient of performance of a refrigerator Class 11?

Therefore, the coefficient of performance of the given refrigerator is 10.44.

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.

Related Questions

What is the formula of coefficient of performance of refrigerator?

The coefficient of performance of the fridge is the refrigerating effect per cycle, Q1, divided by the net work done on the fridge per cycle, and, for a Carnot cycle it can be calculated from T1/(T2 − T1).

What is refrigeration effect formula?

The required refrigerating effect (Qe) is derived from the following equation(13.3)Qe=mm×Cp,m×ΔTwhere Qe is the evaporator load in kJkg−1, Cp,m is the specific heat of milk in kJkg−1K−1, and ΔT is difference between the raw milk and chilled milk in the evaporator.

What is the formula for COP?

COP = Energy Out/Energy In
The energy out – the amount of heat moved by the heat pump – is measured in BTU/h, or British Thermal Units per hour.

What is COP in cooling?

COP (Coefficient of Performance)
COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. For example: A given heat pump used for air cooling has a COP = 2.

What is COP in energy?

COP (Coefficient of Performance)
COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. For example: A given heat pump used for air cooling has a COP = 2.

What is the formula for COP of a C?

Coefficient of Performance – Refrigerator, Air Conditioner
The coefficient of performance, COP, of a refrigerator is defined as the heat removed from the cold reservoir Qcold (i.e., inside a refrigerator) divided by the work W done to remove the heat (i.e., the work done by the compressor).

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 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?

How much energy does a refrigerator use?

Modern refrigerators are very energy efficient compared to older models from a few decades ago. A fridge will use anywhere from 100 to 400 watts depending on size, a large fridge will use about 180 watts or 1575 kWh annually.

What is 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 in AC?

The terms COP (Coefficient of Performance) and EER (Energy Efficiency Ratio) are both used to describe the heating and cooling efficiency of your air-conditioning unit.

What is COP 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.

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.

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 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.

 

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