Ammonia used as refrigerant is non-corrosive to
The chemical formula of a substance is . Its designation is
When the moist air in a closed vessel is cooled then the specific humidity
Specific humidity is _________.
Moist air of DBT 27 and relative humidity of 70% having total pressure of 95Kpa.
Take saturation pressure of water at 27 as 3.57 KPa.
Degree of saturation of air at this state will be
Which of the following statements are TRUE?
1) During sensible cooling of air, both dry bulb and wet bulb temperatures decrease
2) During sensible cooling of air, dry bulb temperature decreases but wet bulb temperature remains constant
3) During sensible cooling of air, dry and wet bulb temperatures decrease but dew point temperature remains constant
4) During sensible cooling of air, dry bulb, wet bulb and dew point temperatures decrease
Which of the following statements is true concerning the by-pass factor?
The psychometric process generally followed in summer air conditioning is called:
Effective temperature depends on dry bulb temperature, and
What is the usual quantity of free air taken per person in air conditioning system?