Question

A 2.5 cm inside diameter pipe is being used to convey a liquid food at 80ºC....

A 2.5 cm inside diameter pipe is being used to convey a liquid food at 80ºC. The inside convective heat transfer coefficient is 10W/(m2ºC). The pipe (0.5 cm thick) is made of steel (thermal conductivity = 43W/mºC). The outside ambient temperature is 20ºC. The outside convective heat-transfer coefficient is 100 /(m2ºC). Calculate the overall heat transfer coefficient and the heat loss from 1 m length of the pipe.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 2 cm thick steel pipe (thermal conductivity = 43 W/[m.C]) with 6 cm inside diameter...
A 2 cm thick steel pipe (thermal conductivity = 43 W/[m.C]) with 6 cm inside diameter is being used to convey steam from a boiler to process equipment for a distance of 40 m. The inside pipe surface temperature is 115 degrees C, and the outside pipe surface temperature is 90 degrees C. Calculate the total heat loss to the surroundings under steady-state conditions.
A stainless steel pipe [thermal conductivity = 17 W/(m.C)] is being used to convey heated oil....
A stainless steel pipe [thermal conductivity = 17 W/(m.C)] is being used to convey heated oil. The inside surface temperature is 13 degrees C. The pipe is 2 cm thick with an inside diameter of 8 cm. The pipe is insulated with 0.04m thick insulation [thermal conductivity = 0.035 W/(m.C)]. The outer insulation temperature is 25 degrees C. Calculate the temperature of the interface between steel and insulation, assume steady-state conditions.
A pipe is transporting saturated steam at 1 bar (100°C) . The pipe has an inside...
A pipe is transporting saturated steam at 1 bar (100°C) . The pipe has an inside diameter of 100 mm with a 9 mm thick wall. The pipe is mild steel with a thermal conductivity of 80 W m-1 K-1. Covering the pipe is a 20 mm thick layer of polythene insulation with a thermal conductivity of 0.04 W m-1 K-1. The convective heat transfer coefficient of the steam is 513.4 W m-2 K-1. The convective heat transfer coefficient of...
Liquid, pumped through the inside of the pipe, is at a temperature Ti = 400K and...
Liquid, pumped through the inside of the pipe, is at a temperature Ti = 400K and provides a convection coefficient hi = 450 W/m2-K at the inner surface of the pipe. The inside and outside radii of the pipe are r1 = 0.25 m, r2 = 0.31 m. The thermal conductivity of the pipe is 240 W/m-K. The outside radius of the insulation, r3 = 0.35 m. The thermal conductivity of the insulation is 20 W/m-K. The outside surface is...
Overall heat transfer co-efficient A pipe carrying milk at 4 °C without insulation will gain heat...
Overall heat transfer co-efficient A pipe carrying milk at 4 °C without insulation will gain heat from outside environment (with air temperature of 20 °C) before it reaches the cold storage containers from heat exchanger. If the pipe carrying the milk has thermal conductivity of 40 W/(m °C) with inside diameter of 5 cm and outside diameter of 7.5 cm, what is the maximum length of the pipe to limit rate of heat transfer to 1kW. Consider the convective heat...
Uniform area, heat transfer problem A stove's walls are made up of a flat inner insulating...
Uniform area, heat transfer problem A stove's walls are made up of a flat inner insulating board 0.01m thick (thermal conductivity: 0.2 W m-1K-1) and a flat outer steel sheet 0.01m thick (thermal conductivity: 26 W m-1K-1). A mineral-wool (thermal conductivity: 0.065 W m-1K-1) is placed between these sheets. The inside temperature of the wall is 773K, how thick does the insulation have to be to maintain the outside wall temperature at 323K ? Assume that the ambient air temperature...
Steam at an average temperature of ?∞= 400°C flows through a steel pipe. The inner and...
Steam at an average temperature of ?∞= 400°C flows through a steel pipe. The inner and outer radii of the pipe are r1 = 4 cm and r2 = 4.5 cm, respectively, and the outer surface of the pipe is insulated with a layer of 50 mm thick-calcium silicate of thermal conductivity of k = 0.5 W/m.K, and is maintained at 350 °C. If the convection heat transfer coefficient on the inner surface of the pipe is h = 65...
hot fluid at 230°C flows through a 1-meter pipe of 0.02m outside radius and 0.015m inside...
hot fluid at 230°C flows through a 1-meter pipe of 0.02m outside radius and 0.015m inside radius. The thermal conductivity of the pipe is 0.5 W/m.k, and the heat transfer coefficient (hi) inside is 300 W/m2 K. The pipe is located in a room at 30°C, and the heat transfer coefficient (ho) at the outer surface is 10 W/m2 k. Calculate the temperature drop (∆T) across the pipe wall.
Liquid water flows in a long pipe of internal diameter of D = 0.01 m at...
Liquid water flows in a long pipe of internal diameter of D = 0.01 m at a mean velocity of V = 0.065 m/s. The pipe is maintained at a constant and uniform surface temperature. Assume the flow is both hydrodynamically and thermally fully developed. For simplicity, evaluate the properties of water at 300 K. Calculate the convective heat transfer coefficient of the flow inside the pipe in W/m2K?
Develop the heat transfer rate across the metalic wall of pipe that has inside raduis of...
Develop the heat transfer rate across the metalic wall of pipe that has inside raduis of ri and temperature Ti , outside radius ro and To with length L and average thermal conductivity k