For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

For evaporators and condensers, for the given conditions, the logarit

1.	For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.
A.	Equal to
B.	Less than
C.	Greater than
D.	None of these
Answer» B. Less than

Discussion

No Comment Found

Related MCQs

A room having dimensions of 5 m × 5 m × 3 m contains air at 25°C and 100 kPa at a relative humidity of 75%. The corresponding value of ps is 3.169 kPa. The partial pressure of dry air will be nearly
For an air-conditioned space, RTH = 100 kW, RSHF = 0.75, volume flow rate of air is 100 m3/minute and room specific humidity is 0.01 kg/kg of dry air. The specific humidity of supply air in kg/kg of dry air is
A thin layer of water in field is formed after a farmer has watered it. The ambient air conditions are: temperature 20 ° C and relative humidity 5%. An extract of steam tables is given below.Temperature (°C)-15-10-50.015101520Saturation pressure (kPa)0.100.260.400.610.871.231.712.34Neglecting the heat transfer between the water and the ground, the water temperature in the field after phase equilibrium is reached equals
In air-conditioning systems, air may be cooled and dehumidified by1. Spraying chilled water to air in the form of fine mist.2. Circulating chilled water or brine in a tube placed across the air flow3. Placing the evaporator coil across the air flow.Which of the above statements are correct?
During the evaporation cooling process, wet bulb temperature:
Air (at atmospheric pressure) at a dry bulb temperature of 40°C and wet bulb temperature of 20°C is humidified in an air washer operating with continuous water recirculation. The wet bulb depression (i.e. the difference between the dry and wet bulb temperatures) at the exit is 25% of that at the inlet. The dry bulb temperature at the exit of the air washer is closest to
During the chemical dehumidification process of air
If a mass of moist air in an airtight vessel heated to a higher temperature, then
If a certain mass of moist air in an air tight vessel is heated to a higher temperature, then
Dew point temperature is the temperature at which condensation begins when the air is cooled at constant

For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

Discussion

No Comment Found

Related MCQs

Reply to Comment