Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN: 9781305387102
Author: Kreith, Frank; Manglik, Raj M.
Publisher: Cengage Learning
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Chapter 3, Problem 3.29P
A mild-steel cylindrical billet 25 cm in diameter is to be raised to a minimum temperature of
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Consider water is flowing through a
pipe with a 10 cm diameter at a flow
rate of 0.2 kg/s. The inlet mean
temperature of the water is 25 °C. If
the wall of the pipe is heated with an
electric resister generating heat at a
rate of 5 kW and maintaining a
uniform wall heat flux, determine the
outlet mean temperature of the water.
The properties of water at this
temperature are given as; specific
heat capacity Cp = 4.18 kJ/kg-K,
thermal conductivity k = 0.607 W/m-
K, Density p = 997 kg/m³, and
kinematic viscosity v = 8.9 x 10
7 m²/s.
Consider water is flowing through a
pipe with a 10 cm diameter at a flow
rate of 0.2 kg/s. The inlet mean
temperature of the water is 25 °C. If
the wall of the pipe is heated with an
electric resister generating heat at a
rate of 5 kW and maintaining a
uniform wall heat flux, determine the
average convective heat transfer
coefficient between water and wall of
the pipe.
The properties of water at this
temperature are given as; specific
heat capacity Cp = 4.18 kJ/kg-K,
thermal conductivity k = 0.607 W/m-
K, Density p = 997 kg/m³, and
kinematic viscosity v = 8.9 x 10-
7 m²/s.
Determine the length of the pipe required to cool the pasteurized orange juice from 65 to 22 °C at a rate of 1500 kg/hr in a 3 cm diameter pipe . The stream of chilled water is flowing from 4 to 20 °C, against the direction of the orange juice. The overall coefficient of heat transfer from the water to the orange juice is 900 J/m2s °C and the specific heat of the orange juice is is 3890 J/kg °C .
Chapter 3 Solutions
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Ch. 3 - Consider a flat plate or a plane wall with a...Ch. 3 - 3.2 High-strength steel is required for use in...Ch. 3 - Prob. 3.3PCh. 3 - 3.5 In a ball-bearing production facility, steel...Ch. 3 - A 0.6-cm diameter mild steel rod at 38C is...Ch. 3 - Prob. 3.7PCh. 3 - Prob. 3.8PCh. 3 - 3.9 The heat transfer coefficients for the flow of...Ch. 3 - 3.10 A spherical shell satellite (3-m-OD,...Ch. 3 - Prob. 3.11P
Ch. 3 - Prob. 3.12PCh. 3 - Prob. 3.13PCh. 3 - 3.14 A thin-wall cylindrical vessel (1 m in...Ch. 3 - A thin-wall jacketed tank heated by condensing...Ch. 3 - 3.16 A large, 2.54-cm.-thick copper plate is...Ch. 3 - 3.17 A 1.4-kg aluminum household iron has a 500-W...Ch. 3 -
3.28 A long wooden rod at with a 2.5-cm-OD is...Ch. 3 - A mild-steel cylindrical billet 25 cm in diameter...Ch. 3 - Prob. 3.37PCh. 3 -
3.38 An egg, which for the purposes of this...
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- Heat Transferarrow_forwardThe hot water needs of a household are to be met by heating water at 15°C to 95°C by a parabolic solar collector at a rate of 1.8 kg/s. Water flows through a 4-cm-diameter thin aluminum tube whose outer surface is blackanodized in order to maximize its solar absorption ability. The centerline of the tube coincides with the focal line of the collector, and a glass sleeve is placed outside the tube to minimize the heat losses. If solar energy is transferred to water at a net rate of 200 W per meter length of the tube, determine the required length of the parabolic collector to meet the hot water requirements of this house. Also, determine the surface temperature of the tube at the exit.arrow_forwardThe hot water needs of a household are to be met by heating water at 15°C to 95°C by a parabolic solar collector at a rate of 1.8 kg/s. Water flows through a 4-cm-diameter thin aluminum tube whose outer surface is blackanodized in order to maximize its solar absorption ability. The centerline of the tube coincides with the focal line of the collector, and a glass sleeve is placed outside the tube to minimize the heat losses. If solar energy is transferred to water at a net rate of 200 W per meter length of the tube, determine the required length of the parabolic collector to meet the hot water requirements of this house. Also, determine the surface temperature of the tube at the exit. Parabolic solar collector Water 95°C 1.8 kg/s Glass tube Water tubearrow_forward
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