1 What are the heat transfer mechanisms involved during heat transfer from the hot fluid to the cold fluid?
2 In a shell and tube heat exchanger which of the following statements is true
3 Which of the following is the correct expression of heat absorbed by the cold fluid?
4 Which of the following is the correct expression of heat transfer from hot fluid to the cold fluid?
5 The dimension of heat transfer co-efficient is:-
6 The dimension of LMTD is same as that of:
7 In a shell and tube heat exchanger the flow rate of shell side liquid inlet at steady state is?
8 In the above question the correct reason for the right answer is?
9 In a shell and tube heat exchanger the diameter of shell is?
10 What do you mean by steady state in this experiment?
11 The hot fluid must be necessarily passed through?
12 The baffles are used on which side of the heat exchanger?
13 The main purpose of using baffles in heat exchanger is?
14 Which of the following represents the correct expression for calculating LMTD?
15 On one side of a heat exchanger, air enters at 72.82ºC and leaves at 90ºC. On the other side of the heat exchanger is condensing steam at one atmosphere.The value for LMTD is
16 Shell and Tube heat exchanger is which type of heat exchanger?
17 Which of the following does not belong to the category of heat exchanger?
18 Which of the following does not belong to the category of flows in a heat exchanger?
19 The following are the types of indirect contact heat exchangers?
20 In which of the following types of heat exchangers the hot and cold fluids pass alternately through a space containing solid particles providing a source and a sink for heat exchange?
21 Automobile Radiators belong to which of the following category?
22 What will happen if the flow rate of shell side liquid is made very high?
23 Which of the following expressions represents the Heat energy balance which is used to derive the variation of temperature of both tube and shell with time and distance along the heat exchanger?
24 The differential equation governing the temperature of shell and tube is of order m in time(t) and of order n with respect to length along the heat exchanger(x), where –
25 Which of the following parameters has no effect on the temperature profiles of shell and tube liquid?
26 In figure-1, the variation of temperature of both hot and cold fluids along the length of the heat exchanger is given. The graph represents -
27 In figure-2, the variation of temperature of both hot and cold fluids along the length of the heat exchanger is given. The graph represents –
28 In figure -1 and figure-2, assuming that the temperature of shell and tube side liquids at both the ends of a heat exchanger is same, then which of the options is correct?
29 The correct variation of Area(A) required for heat transfer versus the LMTD value is?
30 In figure -1 and figure-2, assuming that the temperature of shell and tube side liquids at both the ends of a heat exchanger is same, then which of the options is correct?
31 If the length of the heat exchanger is infinitely large then which of the following options is most appropriate?
32 For the heat exchange between hot and cold fluid, which of the following options is correct?
33 Time Constant is the time when a% of the final value is achieved, where a is?
34 As soon as the user makes a perturbation in the tube side inlet temperature-
35 The main reason for the above question’s answer is:
36 Baffle spacing
37 Correction is applied to LMTD for …………… flow
38 A 2-4 heat exchanger involves
39 Double pipe heat exchanger are preferably useful, when
40 Fouling factor