- U₁ - U₂
- 1/U₁ - 1/U₂
- 1/U₂ - 1/U₁
- U₂ - U₁

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Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid?

Answer: Option 1 Let'

1 Answers 3 views
Sensible heat factor is given by (where S.H. = Sensible heat, and L.H. = Latent heat)?

Answer: Option 1 Sensible Heat Ratio - SHR - is defined as the sensible heat or cooling load divided by the total heat or cooling load. SHR = qs / qt =...

1 Answers 3 views
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)?

Answer: Option 1 Fourier's law of heat conduction is k. A. (dT/dx) where Q = Amount of heat flow through the body in unit time, A = Surface area of heat...

1 Answers 1 views
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)?

Answer: Option 4 Let'

1 Answers 1 views
The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, ΔT = Temperature drop across condensate film )?

Answer: Option 3 Let'

1 Answers 1 views
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)?

Answer: Option 1 Let'

1 Answers 2 views
Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer.?

Answer: Option 3 Let'

1 Answers 1 views
Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling?

Answer: Option 2 Let'

1 Answers 1 views
LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is?

Answer: Option 4 Let'

1 Answers 3 views
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Answer: Option 1 Let'

1 Answers 1 views