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# Unit Length Heat Loss and Drawing a Thermal Circuit

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Find unit length heat lost and describe the thermal circuit.

Copper pipe inside radius r1 = 1cm
And thickness of pipe = 0.3 cm
So pipe outside radius r2 =1.3cm
Thickness of insulated material = 1cm
Radius of pipe with insulation r3 =2.3cm
Thermal conductivity of insulated material k2 = 0.024 W/mK
Inside pipe temperature T1 = 1000C
Surrounding temperature T2 = 200C
Heat transfer coefficient h2 = 50W/m2K

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Unit Length Heat Loss and Drawing a Thermal Circuit are calculated from given data.

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Problem 4.2:
1.
Copper pipe inside radius r1 = 1cm
And thickness of pipe = 0.3 cm
So pipe outside radius r2 =1.3cm
Thickness of insulated material = 1cm
Radius of pipe with insulation r3 =2.3cm
Thermal conductivity of insulated material k2 = 0.024 W/mK
Inside pipe temperature T1 = 1000C
Surrounding temperature T2 = 200C
Heat transfer coefficient h2 = 50W/m2K

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