Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 1 (Q.No. 50)
50.
A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be
Discussion:
15 comments Page 2 of 2.
Rahul said:
7 years ago
RC>RO so it is undesirable to have inaulatiin addition of insulation increses heat loss.
Vipin Patel said:
7 years ago
A must be the right answer according to the critical radius concept.
Yibeltal said:
7 years ago
Please explain the answer clearly.
Shiva Kumar said:
5 years ago
Answer A is perfectly right according to concept.
Anuj said:
1 year ago
A 10 cm dia steam pipe, carrying steam at 180°C, is covered with insulation (conductivity = 0.6 W/m.°C). It loses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from the surface to the surroundings.
Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cm, the rate of heat loss from this insulated pipe will be.
Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cm, the rate of heat loss from this insulated pipe will be.
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