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How do you increase the COP of a Carnot refrigerator or heat pump?
Wiki User
∙ 10y ago
Decrease temperature difference between cold coolant and hot coolant
Wiki User
∙ 10y ago
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What a heat engine does What a heat mover does?
A heat engine converts thermal energy to mechanical energy. Examples of a heat engine is a refrigerator, heat pump, and carnot cycle. A heat mover transfers heat from one object to another.
Do the refrigerator get the heat out or cool in?
A refrigerator is a form of heat pump. It pumps heat out of something.
Is a refrigerator an insulator?
No, a refrigerator is a type of heat pump, it takes heat out of the inside and rejects it to a heat exchanger on the back. I don't see how it could be called an insulator
Can a room be cooled by leaving the door of refrigerator open?
No, leaving the door of a refrigerator open will not cool a room, but will actually make the room hotter. A refrigerator cools its own interior by pumping heat to the heat exchange coils in the back (some models do not have exposed heat exchange coils, but the sides or back of the refrigerator have coils just underneath them, and they get hot). Those heat exchange coils pump heat into the room. Since the process is not 100% efficient, the amount of heat produced includes a certain amount of waste heat. As a result, pumping heat from one part of the room to another part of the room results in a net increase in heat.
Does a refrigerator change heat into cold remove thermal energy from inside the refrigerator or cause thermal energy to disappear?
Thermal energy never disappears, but it can be moved from one place to another, which is what a refrigerator does. If you examine your refrigerator you will be able to observe that there are heat exchange tubes (usually on the back) which get hot as they pump heat from the interior to the exterior of the refrigerator.
What a heat engine does What a heat mover does?
A heat engine converts thermal energy to mechanical energy. Examples of a heat engine is a refrigerator, heat pump, and carnot cycle. A heat mover transfers heat from one object to another.
Do the refrigerator get the heat out or cool in?
A refrigerator is a form of heat pump. It pumps heat out of something.
Limitations of the Carnot cycle for?
The Carnot Heat Engine Cycle and the Carnot Heat Pump Cycle are reversible cycles and do not exist in any actual operation. However, they are very useful for predicting maximum possible thermal efficiencies and coefficients of performance using the absolute temperature of the heat source and the absolute temperature of the heat sink. The Carnot Cycle consists of two reversible and adiabatic ( isentropic ) steps and two reversible and isothermal steps.
When carnot cycle is reversed derive relation for coefficiency of performance for heat pump and refrigerator?
in refrigeration CoP =Qo/w= Todelta S/(Tk-To)delta S= To/Tk-ToEc = 1/(Tk/To)-1in heat pump CoP = Qk/W= Tkdelta S/(Tk-To) delta S= Tk/Tk-ToEh = 1/1-(To/Tk)
Is a refrigerator is an example of heat pump?
yes it pumps freon
What type of device is a refrigerator?
a heat pump that uses work to move heat
Is a refrigerator an insulator?
No, a refrigerator is a type of heat pump, it takes heat out of the inside and rejects it to a heat exchanger on the back. I don't see how it could be called an insulator
What is the difference between a refrigerator and a heat pump?
A refrigerator takes heat out of a small compartment by expanding a gas and utilising the laws of thermodynamics; a heat pump pumps warm air, heated by the sun, from a roof cavity into rooms in a houseto warm them and pumping the cold air into the roof to be heated.
Does a refrigerator change heat into cold remove thermal energy from inside the refrigerator or cause thermal energy to disappear?
Thermal energy never disappears, but it can be moved from one place to another, which is what a refrigerator does. If you examine your refrigerator you will be able to observe that there are heat exchange tubes (usually on the back) which get hot as they pump heat from the interior to the exterior of the refrigerator.
Can a room be cooled by leaving the door of refrigerator open?
No, leaving the door of a refrigerator open will not cool a room, but will actually make the room hotter. A refrigerator cools its own interior by pumping heat to the heat exchange coils in the back (some models do not have exposed heat exchange coils, but the sides or back of the refrigerator have coils just underneath them, and they get hot). Those heat exchange coils pump heat into the room. Since the process is not 100% efficient, the amount of heat produced includes a certain amount of waste heat. As a result, pumping heat from one part of the room to another part of the room results in a net increase in heat.
What is the difference between the Carnot cycle and the Rankine Cycle?
carnot cycle is a very ideal cycle that isn't practical at all , 'cause we add and reject heat isothermally , a wet mixture enters the turbine so it'll cause pitting and erosion and a wet mixture enters the pump , and the pump can't deal with a 2 phases fluid rankine cycle is a practical cycle but with a very low efficiency so the main difference lies in the adding and rejecting of heat
Why is refrigerator a heat pump?
It works by pumping the heat that is inside the fridge to the outside, leaving the inside cold. If you put your had behind a fridge you can feel the heat emerging.
