result conduction
TRANSCRIPT
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RESULT AND DATA ANALYSIS
x(mm) 0 10 20 30 40 50 60 70 80
x(m) 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08
Test Q
(W)
T1
(
)
T2
(
)
T3
(
)
T4
(
)
T5
(
)
T6
(
)
T7
(
)
T8
(
)
T9
(
)
A 10 115 102.6 94.8 77.1 71 67.6 38.2 34.2 34.0
B 20 118.3 105 93.4 74.3 70.2 66.0 38 34.8 34.2
C 30 128 117.8 101.2 78.7 73.8 69.0 39.8 35.8 35.1
Heat Transfer Rate , Q (W)Thermal Conductivity, k (
W
m. K )
10 42!!
20 "!1#
$0 12#"!
BRASS
SAMPLE COOLERHEATER
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SAMPLE CALCULATION
To calculate the cross secto!al area o" the c#l!$er
%ameter o" the C#l!$er & 25mm
Cross 'ecto!al Area o" the C#l!$er & 4.91 104
'am*le Calculato!+
Crosssecto!al area o" the c#l!$er
& ,-4 $2
& ,-4(0.025)2
& 4.91 10-4 m2
To co!ert tem*erature to /el! /
T (/) & T C) 273.15 (tem*erature $eree Celsus to $eree /el!)(
To calculate thermal co!$uctt#
kA &Q
A
x
T &10
4.91x 104
0.02
(77.1+273.15 )(67.6+273.15) &
42.88W/m.K
kB &Q
A
x
T &20
4.91x 104
0.02
(74.3+273.15 )(66.0+273.15) &
98.15W/m.K
kC &Q
A
x
T &30
4.91x 104
0.02
(78.7+273.15 )(69.0+273.15) &
125.98W/m.K
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GRAP
ra*h 1 he! & 10W
Whe! & 20W
Whe! & 30W
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