Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

Heat Transfer
Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

Temperature of the incoming vapor is very high

Lower pressure drop through the exchanger is desired

Higher condensing film co-efficient is desired

Condensate is corrosive in nature

Temperature of the incoming vapor is very high

Lower pressure drop through the exchanger is desired

Higher condensing film co-efficient is desired

Condensate is corrosive in nature

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Heat Transfer
If Prandtl number is greater than the Schmidt number, then the

thermal & concentration boundary layers are of equal thickness

none of the listed here

thermal boundary layer lies inside the concentration boundary layer

concentration boundary layer lies inside the thermal boundary layer

thermal & concentration boundary layers are of equal thickness

none of the listed here

thermal boundary layer lies inside the concentration boundary layer

concentration boundary layer lies inside the thermal boundary layer

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Heat Transfer
Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be

0.35

0.85

0.55

0.45

0.35

0.85

0.55

0.45

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Heat Transfer
The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid

Excessive corrosion

Uneconomic LMTD

Decrease in heat exchanger efficiency

Its evaporation loss

Excessive corrosion

Uneconomic LMTD

Decrease in heat exchanger efficiency

Its evaporation loss

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Heat Transfer
Air is best heated with steam in a heat exchanger of

double pipe type with fin on steam side

shell and tube type

plate type

double pipe type with fin on air side

double pipe type with fin on steam side

shell and tube type

plate type

double pipe type with fin on air side

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Heat Transfer
In case of evaporators, liquid entrainment results primarily due to

high heat transfer rate

foaming of the solution

high vacuum in the evaporator

high heat transfer rate

foaming of the solution

high vacuum in the evaporator

high heat transfer rate

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Heat Transfer

Heat Transfer Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

Heat Transfer If Prandtl number is greater than the Schmidt number, then the

Heat Transfer Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be

Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid

Heat Transfer Air is best heated with steam in a heat exchanger of

Heat Transfer In case of evaporators, liquid entrainment results primarily due to

Heat Transfer
Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

Heat Transfer
If Prandtl number is greater than the Schmidt number, then the

Heat Transfer
Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be

Heat Transfer
The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid

Heat Transfer
Air is best heated with steam in a heat exchanger of

Heat Transfer
In case of evaporators, liquid entrainment results primarily due to