In the equation Q = UAΔt; Δt is

Heat Transfer
In the equation Q = UAΔt; Δt is

Arithmetic mean temperature difference

The difference of average bulk temperatures of hot and cold fluids

Geometric mean temperature difference

Logarithmic mean temperature difference

Arithmetic mean temperature difference

The difference of average bulk temperatures of hot and cold fluids

Geometric mean temperature difference

Logarithmic mean temperature difference

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Heat Transfer
An ejector is used to

Increase temperature

None of these

Remove condensate

Increase pressure

Increase temperature

None of these

Remove condensate

Increase pressure

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Heat Transfer
Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force.

Elastic

Viscous

Inertial

None of these

Elastic

Viscous

Inertial

None of these

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Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

All of these

Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes

Presence of a non-condensible gas decreases the condensing film co-efficient

All of these

Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes

Presence of a non-condensible gas decreases the condensing film co-efficient

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Heat Transfer
In which mode of heat transfer, the Biot number is important?

Natural convection

Radiation

Transient heat conduction

Forced convection

Natural convection

Radiation

Transient heat conduction

Forced convection

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Heat Transfer
In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used

In low range of temperature differences

To prevent corrosion of the tube bundles

Because of its low cost

In high range of temperature differences

In low range of temperature differences

To prevent corrosion of the tube bundles

Because of its low cost

In high range of temperature differences

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Heat Transfer

Heat Transfer In the equation Q = UAΔt; Δt is

Heat Transfer An ejector is used to

Heat Transfer Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force.

Heat Transfer In a gas-liquid shell and tube heat exchanger, the

Heat Transfer In which mode of heat transfer, the Biot number is important?

Heat Transfer In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used

Heat Transfer
In the equation Q = UAΔt; Δt is

Heat Transfer
An ejector is used to

Heat Transfer
Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force.

Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

Heat Transfer
In which mode of heat transfer, the Biot number is important?

Heat Transfer
In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used