Heat Exchanger Analysis And Design 2013 Question Paper is given below for download. This Heat Exchanger Analysis And Design (HEAD) question was asked in the 2nd semester examination of M.Tech in Thermal Engineering for 2011-13 admission batch. Short questions and the full pdf question is given below.
Heat Exchanger Analysis And Design 2013 Question Paper
Second Semester Examination : 2013
HEAT EXCHANGER ANALYSIS AND DESIGN
Time: 3 Hours
Max Marks: 70
Answer Question No.1 which is compulsory and any five from the rest.
The figures in the right hand margin indicate marks.
Q 1. Answer all the questions. [2×10]
a) Water is flowing through a 12 mm tube filling 80% of its cross section. What is its hydraulic diameter?
b) What do you mean by correction factor for a cross flow heat exchanger?
c) Differentiate between regenerative and recuperative heat exchanger?
d) What is the purpose of using baffles in a heat exchanger?
e) What do you mean by mixed and unmixed flow as applied to cross flow heat exchanger?
f) When can the. overall heat transfer coefficient be expressed as U=(1/hi+1/ho)?
g) Draw the schematic of a two shell and four tube pass heat exchanger?
h) What is fouling factor and how do the temperature and the velocity affect it?
i) What will be the heat capacity rate of a fluid during boiling? Justify your answer.
j) When a heat exchanger is classified as compact heat exchanger? Give an example of a natural compact heat exchanger.
Q2. Cold water enters a counter flow heat exchanger at 10° C at a rate of 8 kg/s, where it is heated by a hot water stream that enters the heat exchanger at 70° C at a rate of 2 kg/s. Cp of water is 4.18 kJ/kg-K. Determine the maximum heat transfer rate and the outlet temperatures of the cold and the hot water streams for this limiting case.