Two parallel pipelines spaced 0.5 m apart are buried in soil having a thermal conductivity of 0.5 W/m·K. The pipes have outer di
ameters of 120.0 and 90.0 mm with surface temperatures of 175°C and 5°C, respectively. Estimate the heat transfer rate per unit length between the two pipelines. q′=
1 answer:
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Answer:
Explanation:
Given
From Clausius inequality
=Reversible cycle
=Irreversible cycle
=Impossible
(a)For
Rejected heat
thus it is Impossible cycle
(b)
Possible
(c)Carnot cycle
and maximum Work is obtained for reversible cycle when operate between same temperature limits
Thus it is possible
Answer:
Explanation: see attachment below
