Which refrigerant has the lowest boiling point

The mass of water vapour present in 1 kg of dry air, is called humidity ratio. The C. Film coefficient is defined as the ratio of. A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining K. The ratio of heat extracted in the refrigerator to the workdone on the refrigerant is called.

The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is. The freezing point of sulphur dioxide is.

The thermal diffusivity for solids is generally less than those for liquids and gases. The expression is used for calculating. The alignment circle is marked on the psychrometric chart at. The process, generally used in summer air conditioning to cool and dehumidify the air, is called. The actual C. The power required to drive the plant is. Welcome to the largest collection of MCQs on the Internet. Correct Answer: Carbon dioxide. Correct Answer:. The emissive power of a body depends upon its Options A.

Correct Answer: all of these. The ratio of the energy absorbed by the body to the total energy falling on it, is called Options A. Correct Answer: absorptive power. In a domestic vapour compression refrigerator, the refrigerant commonly used is Options A.

Ammonia C. R D. Correct Answer: R The human body feels comfortable when the heat stored in the body is Options A. Correct Answer: zero.