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QUESTION: 1

Which one is having highest value of overall heat transfer coefficient?

Solution:

Overall heat transfer coefficient for feed water heaters is 8500 W/m^{2 }K while that of steam, alcohol condensers and ammonia condensers are 5000 W/m^{2 }K, 630 W/m^{2 }K and 1400 W/m^{2 }K.

QUESTION: 2

What is the value of overall heat transfer coefficient for air to heavy tars and liquid?

Solution:

It is an incompressible fluid which has constant volume independent of pressure.

QUESTION: 3

What is the value of overall heat transfer coefficient for air to low viscosity liquid?

Solution:

It is made up of tiny vibrating particles of matter which are held together by intermolecular bonding.

QUESTION: 4

Which one is having lowest value of overall heat transfer coefficient?

Solution:

Overall heat transfer coefficient for air to heavy tars is 45 W/m^{2 }K while that of steam, air condensers and ammonia condensers are 340 W/m^{2 }K, 780 W/m^{2 }K and 1400 W/m^{2 }K.

QUESTION: 5

What is the value of overall heat transfer coefficient for air condensers?

Solution:

It consists of an air coil which is used to remove heat from fluids.

QUESTION: 6

Which one is having highest value of overall heat transfer coefficient?

Solution:

Overall heat transfer coefficient for air condensers is 780 W/m^{2 }K while that of steam, alcohol condensers and air to various gases are 340 W/m^{2 }K, 700 W/m^{2 }K and 550 W/m^{2 }K.

QUESTION: 7

What is the value of overall heat transfer coefficient ammonia condensers?

Solution:

It is an electrical device that stores a vast amount of energy.

QUESTION: 8

Which one is having lowest value of overall heat transfer coefficient?

Solution:

Overall heat transfer coefficient for air condensers is 780 W/m^{2 }K while that of steam condensers, air to low viscosity liquids and feed water heaters are 5000 W/m^{2 }K, 600 W/m^{2 }K and 8500 W/m^{2 }K.

QUESTION: 9

What is the value of overall heat transfer coefficient for steam condensers?

Solution:

It is a rotating machine similar to a motor used to control power flow in electric power transmission.

QUESTION: 10

Which one is having highest value of overall heat transfer coefficient?

Solution:

Overall heat transfer coefficient for feed water heaters is 8500 W/m^{2 }K while that of steam condensers, alcohol condensers and ammonia condensers are 5000 W/m^{2 }K, 700 W/m^{2 }K and 1400 W/m^{2 }K.

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