Q. The super-heating in a refrigeration cycle

View solution

Q. A boot-strap air cooling system has

View solution

Q. The boiling point of __________ is -10.5°C.

View solution

Q. One tonne of refrigeration (1TR) means that the heat removing capacity is

View solution

Q. The operating pressure for refrigerating units using R-12 as a refrigerant is

View solution

Q. The specific humidity during heating and humidification process.

View solution

Q. According to Prevost's theory of exchanges, every body irrespective of its temperature continuously emit heat radiations to the surrounding bodies and at the same time receives heat radiations from the surrounding bodies.

View solution

Q. In a boot-strap air evaporative cooling system, the evaporator is provided

View solution

Q. According to Stefan-Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

View solution

Q. A good refrigerant should have

View solution

Q. The thermal diffusivity for gases is generally __________ those for liquids.

View solution

Q. In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.

View solution

Q. In a saturated air-water vapour mixture, the

View solution

Q. Dew point temperature corresponds to the saturation temperature of vapour at its partial pressure.

View solution

Q. The capillary tube is not used in large capacity refrigeration systems because

View solution

Q. The ratio of emissive power of a body to the emissive power of a perfectly black body is called emissivity.

View solution

Q. The thermostatic expansion valve operates on the changes in the

View solution

Q. In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is

View solution

Q. The freezing point of R-12 is

View solution

Q. The refrigerant supplied to a compressor must be

View solution