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FIGURE 5-9
Part of the heat received by a heat engine is converted to work, while the rest is rejected to a sink.
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5-1

5-2

Schematic of a heat engine.
5-3
FIGURE 5-'*
A heat-engine cycle cannot be completed without rejecting some heat to a low- temperature sink.

FIGURE 5-+,
The eciency of a cooking appliance represents the fraction of the energy supplied to the appliance that is transferred to the food.
5-5
!asic components of a refrigeration system and typical operating conditions.
5-6
FIGURE 5-+*
The objective of a refrigerator is to remove QL from the
cooled space.
5-7
FIGURE 5-+
The objective of a heat pump is to supply heat QH
into the warmer space.
5-8

5-9
FIGURE 5-,,

5-10
FIGURE 5-,)

)*ecution of the #arnot cycle in a closed system.
5-11

5-12

FIGURE 5-)5
5-13

5-14

5-15

FIGURE 5-)9
The arrangement of heat engines used to develop the thermodynam ic temperature scale.
5-16

FIGURE 5-55
The fraction of heat that can be converted to work as a function of source temperature %for T L = ++ "(.
5-17

5-18
FIGURE 5-5

5-19
FIGURE 5-*,

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