FUND OF ENG THERMODYN(LLF)+WILEYPLUS
9th Edition
ISBN: 9781119391777
Author: MORAN
Publisher: WILEY
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A system consisting of a power cycle and a heat pump cycle, each operating between hot and cold reservoirs
whose temperature are 500 K and 300 K, respectively. All energy transfers are positive in the directions of the
arrows. The accompanying table provides two sets of steady-state
data, in kW. For each set of data, determine if the system is
operating in accord with the first and second laws of
thermodynamics.
Power cycle
QHQc W cycle
(a) 60 40 20
(b) 120 80 40
Heat pump cycle
QHQ'cW'cycle
60 20
80 20
80
100
Power cycle-
Hot reservoir, TH= 500 K
O'H
J
Qc
o'c
Cold reservoir, Te= 300 K
W cycle
Heat pump
5.34 Shown in Fig. P5.34 is a system consisting of a power cycle and
a heat pump cycle, each operating between hot and cold reservoirs
whose temperature are 500 K and 300 K, respectively. All energy
transfers are positive in the directions of the arrows. The accompany-
ing table provides two sets of steady-state data, in kW. For each set of
data, determine if the system is operating in accord with the first and
second laws of thermodynamics.
Power Cycle
Heat Pump Sheet1
Qc
Weycle
Wayde
(a)
60
40
20
80
60
20
(b)
120
80
40
100
80
20
Hot reservoir, TH= 500 K
QH
Weycle
cycle
Power cycle
Heat pump
Qc
Cold reservoir, Tc = 300 K
FIGURE P5.34
12
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