The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process)
(hA - h2)/ (h1 - h2)
(h2 - hA)/ (h1 - h2)
(h1 - h2)/ (hA - h2)
(hA - h1)/ (h2 - h1)
- In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at
- For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied…
- In a refrigeration system, heat absorbed in comparison to heat rejected is
- An important characteristic of absorption system of refrigeration is
- Freon group of refrigerants are
- Vertical lines on pressure-enthalpy chart show constant
- It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature…
- The wet bulb depression is zero when relative humidity is
- The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
- Choose the correct statement
- One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of…
- An Electrolux refrigerator is called a __________ absorption system.
- During sensible cooling of air ________ decreases.
- The vapour pressure of refrigerant should be
- The human body feels comfortable when the heat stored in the body is
- Carbon dioxide is
- Which of the following statement is correct?
- Under cooling in a refrigeration cycle
- The thermal diffusivity for gases is generally __________ those for liquids.
- The optimum effective temperature for human comfort is
- When the temperature of the surrounding is higher than the temperature of the body, then the heat loss…
- In vapour compression cycle the condition off refrigerant is dry saturated vapour
- In refrigerators, the temperature difference between the evaporating refrigerant and the medium being…
- Chaperon equation is a relation between
- During heating and humidification, the final relative humidity of air
- In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid
- The wet bulb temperature during sensible cooling of air
- The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour…
- Rating of a domestic refrigerator is of the order of
- The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in…