Refrigerator
- The main objective of the refrigerator is to extract energy in the form of heat
from low-temperature body
- A refrigerator is a device which
works in a cycle.
- When work is done on the
refrigerator, it absorbs energy as heat from a low-temperature reservoir
and rejects energy as heat to a high-temperature reservoir
- Refrigerators are used to preserve
food items and drugs at low temperature.
- In this device, freon is used as a
working fluid
Heat pump
- The main objective of a heat pump
is to reject energy in the form of heat to high temperature
reservoir
- A Heat pump is also working in a
cycle.
- Just like the refrigerator Heat pump
absorb energy as heat from a low-temperature reservoir and reject energy
as heat to a high a temperature reservoir, when work is done on the heat
pump.
- The heat pump used to keep the rooms
warm in winter.
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Fig. Schematic of a heat pump or refrigerator |
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