Samsung AM080FXWANR, Service Manual

Page: 198 / 295

P ipin g Di ag r a m
Sa m s u n g El ec troni c s 19 7
7-3-1 Basics
7 - 3 -1-1 P- h Di ag r a m
P-h Diagram
I n th e f o ll o w in g P- h d i ag r a m, th e hori z ont a l a n d v e rti ca l a x e s in d i ca t e e nth a l p y a n d pr e ss u r e r e sp ec ti v e ly .
T his d i ag r a m sho w s m a t e ri a l prop e rti e s f or r ef ri ge r a nt .
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T h e pro ce ss w h e r e ga s r ef ri ge r a nt bec o m e s l i q u i d r ef ri ge r a nt is ca ll ed c on de ns a tion .
T h e pro ce ss w h e r e l i q u i d bec o m e s ga s is ca ll ed e v a por a tion . T h e pro ce ss w h e r e ga s bec o m e s l i q u i d or v i ce v e rs a is ca ll ed
ph a s e c h a n ge.
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T h e t e m p e r a t u r e w h e r e th e ph a s e c h a n ge s is ca ll ed s a t u r a tion t e m p e r a t u r e.
T h e s a t u r a tion t e m p e r a t u r e de p e n d s on th e r ef ri ge r a nt t y p e a n d pr e ss u r e. Sa t u r a tion t e m p e r a t u r e prop e rti e s ca n be
v i e w ed u sin g th e s a t u r a tion cu r v e in th e P- h d i ag r a m .
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P r e ss u r e - sp ec i f i c t e m p e r a t u r e , a l so ca ll ed isoth e r m a l l in e , is sho w n in th e P- h d i ag r a m .
I t is possi b l e to v i e w th e r ef ri ge r a nt st a t u s b y l o ca tin g th e point th a t is int e rs ec t ed b y th e pr e ss u r e a n d isoth e r m a l l in e s
a n d d i v i ded b y th e s a t u r a tion cu r v e. T h e int e rs ec tin g point ca n be de ri v ed b y m ea s u rin g r ef ri ge r a nt t e m p e r a t u r e a n d
pr e ss u r e a t a ce rt a in point .
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R ef ri ge r a nt c onsistin g o f a sin g l e c o m pon e nt d o e s not h a v e a t e m p e r a t u r e g r ad i e nt du rin g th e ph a s e c h a n ge pro ce ss .
R ef ri ge r a nt m i x t u r e s m a y h a v e a t e m p e r a t u r e g r ad i e nt du rin g th e ph a s e c h a n ge pro ce ss , a s th e s a t u r a tion t e m p e r a t u r e
f or c o m pon e nts o f th e r ef ri ge r a nt v a r y .
T his t y p e o f r ef ri ge r a nt is ca ll ed non - a z e otropi c r ef ri ge r a nt . R41 0 A r ef ri ge r a nt is r efe rr ed to a s a n ea r - a z e otrpi c r ef ri ge r a nt .
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Su p e rh ea t ed v a por in d i ca t e s to th e v a por st a t e f o u n d to th e ri g ht o f th e Sa t u r a t ed v a por l in e.
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Tw o - ph a s e st a t e r efe rs to a st a t e w h e r e ga s a n d l i q u i d ph a s e s a r e m i x ed.
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Subc oo l ed l i q u i d r efe rs to th e l i q u i d st a t e f o u n d to th e l ef t o f th e Sa t u r a t ed l i q u i d l in e.
7-3 Functions