Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

Heat Transfer
Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

45

50

37

32

45

50

37

32

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Heat Transfer
Economy of a multiple effect evaporator is not influenced much by the

temperature of the feed

rate of heat transfer

boiling point elevations

ratio of the weight of the thin liquor to thick liquor

temperature of the feed

rate of heat transfer

boiling point elevations

ratio of the weight of the thin liquor to thick liquor

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Heat Transfer
Graetz number is given by

kμ/mCp

mCp/kμ

kL/mCp

mCp/kL

kμ/mCp

mCp/kμ

kL/mCp

mCp/kL

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Heat Transfer
A perfect black body is a perfect __________ of radiation

absorber

none of the listed here

emitter

Both emitter & absorber

absorber

none of the listed here

emitter

Both emitter & absorber

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Heat Transfer
Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

L

< 1

0.1

>1

L

< 1

0.1

>1

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Heat Transfer
Boiling point elevation of a solution of NaOH

Both B and C

Is almost independent of temperature

Increases rapidly with temperature rise

Is almost independent of pressure

Both B and C

Is almost independent of temperature

Increases rapidly with temperature rise

Is almost independent of pressure

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer

Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

Heat Transfer Economy of a multiple effect evaporator is not influenced much by the

Heat Transfer Graetz number is given by

Heat Transfer A perfect black body is a perfect __________ of radiation

Heat Transfer Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

Heat Transfer Boiling point elevation of a solution of NaOH

Heat Transfer
Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

Heat Transfer
Economy of a multiple effect evaporator is not influenced much by the

Heat Transfer
Graetz number is given by

Heat Transfer
A perfect black body is a perfect __________ of radiation

Heat Transfer
Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

Heat Transfer
Boiling point elevation of a solution of NaOH