Summary
Summary Heat Transfer
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Handwritten cheat sheet for Heat Transfer by JEE 2020, GATE, and CSIR topper
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atharvashinde
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Heat txunsfesTsansfex cf heat faom Lbody to ancthes takes
place hsough ) Conduchon 2) Conechon
t9) Racliahon
1) Thesmal conduction
heat ransfersed cuhen adhacent atoms nbozte
agairnst one anothes
A steady stute conduchion le- kAlT-T)!
stute
k is caled themal conduchvitjL
I-L is called temp, gradi ent
Tenp. af apt suated at a dist. e fa2 the left
end
9= kAdT
t
Q=T- T can be hought as thesmal
t /KA KA
resistan ce
Js
K,
Keg A KiA KaA KsA
, t
G-4zkablT-T) Cspherad
b
2)Convection
Tansmiasion cF heot fram_anepaxt to anether
hy the actual tansox of_parhieles
heating Ruude
Conrechianis quickex than conduchion
a) Rodiahicon
Evexy body emts textnal mdahion a alL tenp.
abae absolute, O
Lheat mdiahed depends onon ts enp.
E a bodu emits and abeanhs heat in
ten tt said to be in thamal eaual ant
bhen the bnp and body A eguilibium
susrOuhdings are
Lequalized,conduction l konvecthon stops but
ndiahion
.|Heat aNs
exchange
araug axe
contnues
ace. matian of genexaed moinly due to
They hraiel oith changed
c Speed pasticle
Theo folloo Jaw of reflectian,
LIIR refnchion and
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