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Capitolo 5

Il bilancio entropico

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YLVWR SHU LO VLVWHPD FKLXVR

Ê DQFKH IDFLOH GLPRVWUDUH FKH YDOJRQR OH PHGHVLPH FRQFOXVLRQL YLVWH SUHFHGHQWHPHQWH

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DQFKH LQ TXHVWR FDVR VL SDUOHUj GL

ciclo diretto

e di

ciclo inverso

D VHFRQGD FKH LO ODYRUR YHQJD

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/D SRVVLELOLWj FKH XQR VWHVVR FLFOR QHOOH FRRUGLQDWH

p – v

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H TXHVWR

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5.3

LE MACCHINE TERMICHE

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macchine termiche

GDWR D TXHVWL GLVSRVLWLYL

a)

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q

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con la sorgente esterna a temperatura

T

a

e

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minate

motori termici

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q

a

P

F

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Figura 5.6

Figura 5.7

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SL FDOGD D WHPSHUDWXUD

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e i due scambi termici

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macchine frigorifere

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pompe di calore

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