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TUMKUR LAKKANNA PRASANNA KUMARNUS

ASE CHANGING MATERI

PRESENTERSSASIDHARAN NARENDRABABU TUMKUR LAKKANNA PRASANNAKUMARLOW KOK LEONGKHOO JUN HAO


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NUS

TUMKUR LAKKANNA PRASANNA KUMAR

PCM’s

Organic

Parafns

CnH2n2

N!n"Parafns

N!n"

!rganicSa#$ H%&ra$'

MnH2O

M'$a##ics

E($'c$ic

TYPES OF PCM

NUS


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TUMKUR LAKKANNA PRASANNA KUMAR

PCMs ar' !rganic c!)*!(n&s &'ri+'& ,r!) ani)a# ,a$ an& *#an$ !i#s-

T.'ir )'#$ *!in$ $')*'ra$(r's rang' /'$0''n "13C an& 4543C-

T.' )!s$ c!))!n /i!/as'& PCMs ar' &'ri+'& ,r!) ,a$$% aci&s an&

.a+' .ig.'r 'fci'nc% $.an sa#$ .%&ra$'s an& *'$r!#'()"/as'&*.as' c.ang' )a$'ria#-

ORGANIC PCM

NUS


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NON-ORGANIC PCM• C!nsis$ !, in!rganic sa#$s an& 0a$'r-

•

T.'ir )'#$ *!in$ $')*'ra$(r's rang' /'$0''n 453C an& 63C- T.' a&+an$ag's !, N!n Organic PCM ar' #!0 )a$'ria# c!s$s7.ig. #a$'n$ .'a$ s$!rag' ca*aci$%7 *r'cis' )'#$ing *!in$7 .ig.$.'r)a# c!n&(c$i+i$% an& in8a))a/i#i$%-


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EUTECTIC PCM T%*ica##%7 ar' &'ri+'& ,r!) *'$r!#'() an& .a+' a 0a9% c!nsis$'nc%a$ r!!) $')*'ra$(r'- T.'ir )'#$ *!in$ $')*'ra$(r's rang' /'$0''n"63C an& 13C- T.'% .a+' g!!& $.'r)a# s$!rag' ca*aci$% an& ar'*r!+'n $! ,r'':' 0i$.!($ s(*'rc!!#ing-


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P C M

S '

# ' c $

i ! n

Larg' #a$'n$ .'a$ an& .ig. $.'r)a#c!n&(c$i+i$%

M'#$ing $')*'ra$(r' S.!(#& /' *rac$ica#rang' !,

!*'ra$i!n

M'#$ c!ngr('n$#% 0i$. )ini)()s(/c!!#ing an& /' c.')ica##% s$a/#'

#!0 in c!s$7 n!n$!9ic an& n!n"c!rr!si+'

PCM SELECTION


7/10TUMKUR LAKKANNA PRASANNA KUMAR

NUS

D'*'n&ing !n $.' a**#ica$i!ns7 $.' PCMs s.!(#& ;rs$/' s'#'c$'& /as'& !n $.'ir )'#$ing $')*'ra$(r'-Ma$'ria#s $.a$ )'#$ /'#!0 45 C ar' (s'& ,!r s$!ringc!!#n'ss in air c!n&i$i!ning a**#ica$i!ns7 0.i#')a$'ria#s $.a$ )'#$ a/!+'



NUS

PCM SELECTION


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PCM SELECTION

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