Q#1: Discuss the significant and industrial application of heat transfer from extended surface (fins). Solution#1 (to be typed here by the student) Q#2: A heat exchanger is a system used to transfer heat between two or more fluids. Explain industrial application of different types of heat exchanger and also explain LMTD method counter & parallel flow arrangement. Solution#2 (to be typed here by the student) Q#3: Water at the rate of 68 kg/min is heated from 15 to 55•c by oil having a specific heat of 1.9kj/kg•c. the fluids are used in a Counter flow double pipe heat exchanger, and the oil enters the exchanger at 130•c and leaves at 80 c. the overall heat-transfer coefficient is 325 w/m²•c. calculate the heat-exchanger area use LMTD method with the help of suitable diagram. Solution#3 (to be typed here by the student) Q#4: A cross flow heat exchanger (Both fluids are mixed) Is used to heat oil in the tubes (c=1.8 kj/kg · •c) from 15c to 85•c with a mass flow of 0.73kg/sec. blowing across the outside of the tubes is steam that enters at 130-c and leaves at 110•c with a Page 2 of 2 mass flow of 5.3 kg/sec. The overall heat-transfer coefficient is 270 w/m c and c for steam is 1.96kj/kg•c. The surface area of the heat exchanger is 12 m2. Calculate effectiveness of this heat exchanger. (Note: Select suitable formula form formula sheet) Solution#4 (to be typed here by the student) Q#5: Explain difference between black body, white body and gray body. And discuss absorptivity, reflectivity, transmissivity in detail. Solution#5 (to be typed here by the student)
Q#1: Discuss the significant and industrial application of heat transfer from extended surface (fins). Solution#1 (to be typed here by the student) Q#2: A heat exchanger is a system used to transfer heat between two or more fluids. Explain industrial application of different types of heat exchanger and also explain LMTD method counter & parallel flow arrangement. Solution#2 (to be typed here by the student) Q#3: Water at the rate of 68 kg/min is heated from 15 to 55•c by oil having a specific heat of 1.9kj/kg•c. the fluids are used in a Counter flow double pipe heat exchanger, and the oil enters the exchanger at 130•c and leaves at 80 c. the overall heat-transfer coefficient is 325 w/m²•c. calculate the heat-exchanger area use LMTD method with the help of suitable diagram. Solution#3 (to be typed here by the student) Q#4: A cross flow heat exchanger (Both fluids are mixed) Is used to heat oil in the tubes (c=1.8 kj/kg · •c) from 15c to 85•c with a mass flow of 0.73kg/sec. blowing across the outside of the tubes is steam that enters at 130-c and leaves at 110•c with a Page 2 of 2 mass flow of 5.3 kg/sec. The overall heat-transfer coefficient is 270 w/m c and c for steam is 1.96kj/kg•c. The surface area of the heat exchanger is 12 m2. Calculate effectiveness of this heat exchanger. (Note: Select suitable formula form formula sheet) Solution#4 (to be typed here by the student) Q#5: Explain difference between black body, white body and gray body. And discuss absorptivity, reflectivity, transmissivity in detail. Solution#5 (to be typed here by the student)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter10: Heat Exchangers
Section: Chapter Questions
Problem 10.11P
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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
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Q#1: Discuss the significant and industrial application of heat transfer from extended
surface (fins).
Solution#1 (to be typed here by the student)
Q#2: A heat exchanger is a system used to transfer heat between two or more fluids.
Explain industrial application of different types of heat exchanger and also explain
LMTD method counter & parallel flow arrangement.
Solution#2 (to be typed here by the student)
Q#3: Water at the rate of 68 kg/min is heated from 15 to 55 •c by oil having a specific heat
of 1.9kj/kg c. the fluids are used in a Counter flow double pipe heat exchanger, and
the oil enters the exchanger at 130•c and leaves at 80•c. the overall heat-transfer
coefficient is 325 w/m•c. calculate the heat-exchanger area use LMTD method with
the help of suitable diagram.
Solution#3 (to be typed here by the student)
Q#4: A cross flow heat exchanger (Both fluids are mixed) Is used to heat oil in the tubes
(c=1.8 kj/kg · •c) from 15°c to 85°c with a mass flow of 0.73kg/sec. blowing across
the outside of the tubes is steam that enters at 130°c and leaves at 110•c with a
Page 2 of 2
mass flow of 5.3 kg/sec. The overall heat-transfer coefficient is 270 w/m.c and c
for steam is 1.96kj/kg•c. The surface area of the heat exchanger is 12 m?. Calculate
effectiveness of this heat exchanger. (Note: Select suitable formula form formula
sheet)
Solution#4 (to be typed here by the student)
Q#5: Explain difference between black body, white body and gray body. And discuss
absorptivity, reflectivity, transmissivity in detail.
Solution#5 (to be typed here by the student)
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