Engineering, 18.02.2020 23:56 eve2055

Hot liquid is flowing in a steel pipe with an inner diameter of D, = 22 mm and an outer diameter of D2 = 27 mm. The inner surface of the pipe is coated with a thin fluorinated ethylene propylene (FEP) lining. The thermal conductivity of the pipe wall is 15 W/m. K. The pipe outer surface is subjected to a uniform flux of 1200 W/m2 for a length of 1 m. The hot liquid flowing inside the pipe has a mean temperature of 180°C and a convection heat transfer coefficient of 50 W/m².K. The interface between the FEP lining and the steel surface has a thermal contact conductance of 1500 W/m2.K. a) Determine the temperatures at the lining and at the pipe outer surface for the pipe length subjected to the uniform heat flux. b) What is the total thermal resistance between the two temperatures? c) The ASME Code for Process Piping (ASME B31.3-2014, A323) recommends a maximum temperature for FEP lining to be 204°C. d) Does the FEP lining comply with the recommendation of the code?

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Answers: 3

Answer

Engineering, 04.07.2019 18:10

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

Answers: 3

Answer

Engineering, 04.07.2019 18:10

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Answers: 2

Answer

Engineering, 04.07.2019 18:20

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?

Answers: 3

Answer

You know the right answer?

Hot liquid is flowing in a steel pipe with an inner diameter of D, = 22 mm and an outer diameter of...

Questions