DAFTAR SIMBOL = Rasio luasan perpindahan panas

DAFTAR SIMBOL
= Luas perpindahan total, m2
= Luas free flow area,m2
= Luasan frontal, m2
= tebal plate, m
= plate spacing, m
= jarak fin, m
= panjang effektif fin, m
= Kapasitas kalor, kJ/s. K
= panas spesifik, kJ/kg. K
= rasio kapasitas kalor maksimum dan minimum
= Maksimum mass velocity, kg/m2.s
= koefisien perpindahan panas konveksi, W/m2. K
= konduktifitas thermal, W/m. K
= parameter effisiensi fin
= laju alir massa, kg/s
NTU = Number of Transfer Unit
Nu = Nusselt Number
P
= Tekanan, Pa
Pr = Prandt Number
= Laju perpindahan panas, kW
q
Re = Reynolds Number
Sd = Surface Designation
4rh = Diameter hidraulik, m
T
= Temperatur, K
U
= Koefisien perpindahan panas menyeluruh, W/m2. K
α
= Rasio luasan perpindahan panas per total volume
A
Aff
Afr
a
b
c
l
C
cp
Cr
G
h
k
m
β
δ
ηf
total m2/m3
= Rasio luasan perpindahan panas total satu sisi Plate
Fin Heat Exchanger per volume antar plat m2/m3
= tebal fin, m
= effisiensi fin
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ηo
ɛ
μ
ρ
σ
∆P
v
P
f
L
D
HL
Hlm
HLT
= overall surface efficiency
= effektiveness
= viskositas absolute, N.s/m2
= Densitas, kg/m3
= ratio luas free flow area per luasan frontal
= Pressure Drop, kg/m. s2
= kecepatan fluida, m/s
= Perimeter/ Keliling, m
= friction factor in Moody diagram
= panjang, m
= diameter, m
= Head loss Major, m2/s2
= Head loss Minor, m2/s2
= Head loss Total, m2/s2
= Standart of elbow in Table
g
= percepatan gravitasi, (9,81 m/s2)
z
= ketinggian, m
v
= volume spesifik, m3/kg
volume spesifik udara rata-rata, m3/kg
P
= Daya blower, kW
HE = Heat Exchanger
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