A refrigeration system cools the external fluid flowing through the evaporator, whereas a heat pump heats the external fluid flowing through the condenser. The main difference between a refrigerator and a heat pump is
in the manner of operation regarding cooling or heating
.
What is the relationship between COP of heat pump and refrigerator Mcq?
Explanation: (Heat leakage from a heat pump to
surroundings)=(COP of refrigerator + 1)*(work done on pump
).
Is heat pump same as refrigerator?
A
heat pump is similar to a refrigerator
. The only point of difference between the two is of the operating temperatures. The working temperatures in a refrigerator are of the colder level and atmosphere, whereas working temperatures in heat pump are of hotter level and atmosphere.
What are the similarities and differences between the heat pump and refrigerator?
Compare Heat Pump and Refrigerator.
All the components of the heat pumps are same as the refrigerator and even they perform the similar functions
; the only difference is that in the heat pumps the components work in a reverse manner. The heat pump is the reverse refrigerator.
What is difference between heat pump and refrigerator Mcq?
a) Heat Pump Gives efficiency and refrigerator gives C.O.P. … The characteristic which differentiates both of them is the
temperature of the desired effect
, heat pump desires for higher temperature whereas Refrigerator desires for lower temperature than atmospheric temperature.
Why COP of heat pump is more than refrigerator?
The heat rejected to the hot sink is greater than the heat absorbed from the cold source
, so the heating COP is 1 greater than the cooling COP. applies to heat pumps and applies to air conditioners or refrigerators.
Which of the following is true for heat pump and refrigerator Mcq?
2. Which of the following is true for a heat pump and a refrigerator? Explanation: This is also the main difference between a heat pump and a refrigerator. Explanation: These are
similar to the components of vapour compression refrigeration cycle
.
What is correct formula for calculating COP of refrigerator?
For a refrigerator the coefficient of performance is
COP = Q
low
/(-W)
.
How is heat engine different from refrigerator?
Heat engine converts heat energy into mechanical energy
. Refrigerator transfers heat from cold body to hot body. An ideal refrigerator can be considered as a Carnot's ideal heat engine working in the reverse direction.
What is the difference between the heat engine and heat pump?
Heat engines are the devices which convert the thermal energy into mechanical work, while heat pumps transfer heat energy from low temperature to high temperature. … Heat engine does this by using the
temperature difference between a hot source and a cold sink
.
What is COP formula?
COP =
|Q| W
. 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.
Which of the following represent heat pump?
Correct answer is option ‘
B
‘.
What is the desired effect in a heat pump Mcq?
As the desired effect for the heat pump is
higher than the refrigerator
.
What is SI unit of refrigeration?
Explanation:
KJ/s or KW
is the S.I. unit of refrigeration, which is converted to Tonnes as commercial unit.
Which has higher COP heat pump or refrigerator?
Given the same energy source and operating conditions, a higher COP heat pump will consume
less purchased
energy than one with a lower COP. … As the surroundings cool (T
C
reducing) the denominator increases and COP reduces. Therefore, the colder the surroundings, the lower the COP of any heat pump or refrigerator.
Can cops be less than1?
Coefficient Of Performance (COP) is the ratio of “Coldness” produced to the “Heat” or ” Work” supplied. …
COP can be less than 1
. Usually,COP is more than 1 for VCRS which is actually desirable since VCRS uses high grade electrical energy as the energy input!!…
