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Problems: Heat Transfer in Boiling & Condensation Notes | Study Heat Transfer - Mechanical Engineering

Document Description: Problems: Heat Transfer in Boiling & Condensation for Mechanical Engineering 2022 is part of Boiling & Condensation for Heat Transfer preparation. The notes and questions for Problems: Heat Transfer in Boiling & Condensation have been prepared according to the Mechanical Engineering exam syllabus. Information about Problems: Heat Transfer in Boiling & Condensation covers topics like and Problems: Heat Transfer in Boiling & Condensation Example, for Mechanical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Problems: Heat Transfer in Boiling & Condensation.

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Frequently Asked Questions and Problems for Practice (Module 6)

Q.1

What is Leidenfrost phenomenon?

Q.2

How the presence of non-condensable gases affect the condensation rate of vapour?

Q.3

What is the difference between drop-wise and film condensation?

Q.4

Discuss the phenomena of condensation on a vertical and a horizontal plate.

Q.5

Saturated vapour of methanol condenses on a vertical plate at 1 atm. The vertical plate is maintained at 55 oC by cooling water at the other side. Calculate the following,
(a) Length of the plate over which the condensate film remains laminar.
(b) What is the thickness of the film at the end of the laminar region?
(c) Determine the average heat transfer coefficient and the rate of condensation in the laminar region.
(c) What is the average heat transfer coefficient for the entire plate?

Q.6.

Saturated steam flows in a horizontal tube having 5 cm diameter and 15 cm of length. Calculate the condensation for a tube wall temperature of 96 oC.

Q.7.

An uninsulated water pipe carrying water at 2 oC passes through hot and humid area where the temperature is 32 oC and the relative humidity is 75%. Estimate the condensate if the pipe is 50 mm in diameter and the exposed length is 75 cm. It may be assumed that the pipe is exposed to saturated vapour at the partial pressure of the water vapour in the air.

Q.8.

Compare the heat transfer coefficients for boiling water and condensing steam on a horizontal tube for normal atmospheric conditions.

The document Problems: Heat Transfer in Boiling & Condensation Notes | Study Heat Transfer - Mechanical Engineering is a part of the Mechanical Engineering Course Heat Transfer.
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