A refrigerator is the reverse of an engine: Work is performed to remove heat from a system, making it colder. The efficiency of a refrigerator (often termed the “coefficient of performance”) is defined as q 3 / w cycle = T low / ( T high − T low ) . Use this definition to determine the efficiency needed to halve the absolute temperature. What does your answer imply about attempts to reach absolute zero?
A refrigerator is the reverse of an engine: Work is performed to remove heat from a system, making it colder. The efficiency of a refrigerator (often termed the “coefficient of performance”) is defined as q 3 / w cycle = T low / ( T high − T low ) . Use this definition to determine the efficiency needed to halve the absolute temperature. What does your answer imply about attempts to reach absolute zero?
Solution Summary: The author explains that the efficiency of a machine is defined as the ratio of fruitful output and total input.
A refrigerator is the reverse of an engine: Work is performed to remove heat from a system, making it colder. The efficiency of a refrigerator (often termed the “coefficient of performance”) is defined as
q
3
/
w
cycle
=
T
low
/
(
T
high
−
T
low
)
. Use this definition to determine the efficiency needed to halve the absolute temperature. What does your answer imply about attempts to reach absolute zero?
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