Q./steam al 605K Flow in Alpipe with thermal conductivity K-188 W/m. c whose in and out diamter D₁= 2 inche and D₂= 58 mm respectively. The pipe is covered with Turo insulation material First was glass wool K = 0,06 and second cyas insulaian K=0,01 w/m.c. FirsT 33mm and second 13 mm, Heat is Lost to the surrounding al Too, Too2 = 288K by natural convection and radiation, with combined heat Transfer coefficent of he-22,8 W/m². c. Taking heat Transfor coefficent inside pipe To be hi-48.9 W/m² c. Find Heat loss por length and Temp. dropp. ??

Q./steam al 605K Flow in Alpipe with thermal conductivity K-188 W/m. c whose in and out diamter D₁= 2 inche and D₂= 58 mm respectively. The pipe is covered with Turo insulation material First was glass wool K = 0,06 and second cyas insulaian K=0,01 w/m.c. FirsT 33mm and second 13 mm, Heat is Lost to the surrounding al Too, Too2 = 288K by natural convection and radiation, with combined heat Transfer coefficent of he-22,8 W/m². c. Taking heat Transfor coefficent inside pipe To be hi-48.9 W/m² c. Find Heat loss por length and Temp. dropp. ??

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.48P

See similar textbooks

Similar questions

Water going into a pipe with a tempeture of T1 and going out T2 . ambient tempeture is T0. flow rate q. Develop an expression for T2 ( based on heat transfer) Length of the pipe Lh0 - convective heat transfer coefficient of the airhW -convective heat transfer coefficient of the waterk- pipe thermal conductivity (W/m·K)d – pipe diameter Use any other varilable that you need and can be found online easily .
Q) A refrigerant at |-40^ C flows into a copper pipe (400 W/mK) of 10 mm ID and 14 mm OD. A 40 mm thick shell of thermocole (0.03 W/mK) is put on the pipe to reduce losses. Estimate the heat leakage to the refrigerant per meter length of pipe, if the ambient temperature is 40°C. Assume the external and internal heat transfer coefficients are 5 W/m?K and OW / (m ^ 2) * K respectively. Calculate the amount of refrigerant evaporated per hour taking its latent heat at - 40 degrees *C as 1390 kJ/kg.
Q. IsTeam at 605 K Flow in Alpipe with thermal conductivity K-188 W/m. c whose in and out diamter D₁ = 2 inche and D₂=58mm respectively. The pipe is covered with Tuto insulation material First was glass wooL K=0,06 and second cuas insulation K=0,01 w/m.c FirsT 33mm and second 13 mm, Heat is Lost to the surrounding at Too' Too2=288K by natural convection and radiation, with combined Theat Transfer coefficent of h=22,8 W/m² C, Taking heat Transfor coefficent inside pipe To be hi-48.9 W/m². C. Find Heat loss por length and Temp. dropp. ??
The steel pipe has an internal radius of 50 mm., a thickness of 5 mm. and a length of 5 m. Inside the pipe, hot fluid with temperature 80 C flows inside the pipe and cold fluid with temperature 20 C flowing outside the pipe. Let k=285 W/mC and hi= 25 W/mC, ho= 10 W/mC. Find 4.1) Heat Transfer Rate (Q) 4.2) Temperature on both inner and outer tube surfaces...
2. In a pharmaceutical plant, a copper pipe (k = 400 W/m-K) Liq. Oz. -200°C h = 120 W/m?K with inner diameter of 20 mm and wall thickness of 2.5 mm is rPipe, k, 400 W/m-K used to carry liquid oxygen flowing at a temperature of -200°C with a convective heat transfer coefficient of 120 Insulation k, = 0.05 W/m K W/m*-K. The condition surrounding the pipe has an ambient air temperature of 20°C and a combined heat transfer coefficient of 20 W/m²K. If the dew point is 10°C, what thickness of insulation (k = 0.05 W/m-K) around the copper pipe will avoid condensation on the pipe surface. Assume contact resistance between the pipe and insulation is negligible. (from Cengal, et al. Fundamentaks of Thermal Fluid Surrounding air, 20°C heombined = 20 W/m K Dew point 10'C D,- 20 mm D,= 25 mm Sciences) D3 Note: the dew point is the temperature at which water vapor will condense on the pipe surface.
Problem (u)! 1.- Astean pipe has an inside diameter of 2.0 in, and consists of 0.22 in of Copper pipe Covered by (lio in) of glass fiber insalation and (0.008) in of aluminum foil. The steam temperature is Ti= 300 F, and outside air temperature is at To= 80 Fo Heat transfer coefficients are hi= 25, and ho=12 Bty 0 Xarift. I respectively. If the Pipe is 3oft long, compute the heat loss in (Btu/hr). T₂ = 28 f) Aus (9170 Blu -
G. ?" Which matcrial has the higher themal conductivity'? d: 5. (ht What is the overall heat-transfer coefficicnt U? Describe a physical situation,in す 5コ . :- which it could be used. 石:.5 . (c) A standard Schedule 405 cm steel pipe (inside diameter 5.25 cm and wall thickness 040 cm) čarrying steam is lagged (i.e insulated) with 5.0 cm of 85 per cent magnesia covered in turn with 5.0 cm of cork. Estimate the heat loss per hour per meter of pipc if the inner surface of the pipe is at 120°C and the outer surface of the cork is at 32°C. The thermal conductivitics of the substances concerned are 9. of Material Thermal Conductivity [Watts/ha K] Steel 45 85% Magnesia (0.07 Cork 0.05 At いい 1
For details shown below the rate of heat transfer per unit length is Q is: T=350 K, T=700 K, d= 10mm, N,=50, N =4 00 -6 Air properties: v= 61.1 10 m /s, k =0.0524 W/mxK, , Pr. = 0.707,Pr=0.695, Cp=1075J/Kg.K 3 •p=0.498 Kg/m S,20mm Flue gas V=5m/s Too=700K=T; p=1atm S=20mmLi Select one: a. 701218 W/m b. 547649 W/m c. 206009 W/m d. 401528 W/m
Saturated steam at 3 atm will flow through a 3 in. Schedule 80 steel pipe. In order todecrease the heat losses to the surrounding air (at 20 oC) the pipe will be insulated. There are twotypes of insulating materials available, each with a thickness of 2.5 cm. Thermal conductivity ofinsulator A is 0.04 W/m.K and that of insulator B is 0.20 W/m.K. Both insulators will be used, inorder to have the least heat loss. Which insulator should be covered outside? Assume thatconvective heat transfer coefficient between the insulated pipe and air is 15 W/m2K.
Engine oil at 0.3 kg/s flow rate (cp=2100 J/kg°C) 2 cmat a temperature of l30°C in a thin-walled copper pipe in diameterit will be heated from 20°C to 60°C by condensing steam outside.Total heat transfer coefficient 650 W / m2For ° C, heat transferpipe required to achieve the speed and speed of this heat transferfind the length.
Write legibly, provide manual step by step solution, and diagram for below given problem. Saturated steam at 500oK flows in a 0.20 m inside diameter, 0.21 m outside diameter pipe. The pipe is covered with 0.08 m of insulation with a thermal conductivity of 0.10 W/m-K. The pipe’s conductivity is 52 W/m-K. The ambient temperature is 300oK. The unit convective coefficients are h1 = 18,000 W/m2-K and ho = 12 W/m2-K. Determine the heat loss from 4 m of pipe. a. 778.21 watts b. 825.80 watts c. 830. 80 watts d. 835.80 watts
Sipho’s mother is making a fire in the stove inside a shack using coal. A fan is used to extract the flue gasfrom the fire via a chimney made of zinc material. The wall thickness of Chimney is L=4mm and the walltemperature of the chimney on the flue gas side is T_si=60˚C. Sipho, playing outside next to the chimneyexperiences an ambient temperature of 20˚C. The surrounding temperature is T_sur=35˚C and the emissivityis ε=0.95. Assume the convection coefficient is 20W/m2K and the chimney is grey material.Under these conditions determine the outer surface (air side) temperature T_so=? of the chimney.