The centrifugal compressors are generally used for refrigerants that require
Small displacements and low condensing pressures
Large displacements and high condensing pressures
Small displacements and high condensing pressures
Large displacements and low condensing pressures
- When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance…
- Dry bulb temperature is the temperature of air recorded by a thermometer, when
- A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking…
- A bootstrap air cooling system has
- The sub-cooling in a refrigeration cycle
- An important characteristic of absorption system of refrigeration is
- During dehumidification process, the relative humidity
- In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity…
- The emissivity of a polished silver body is __________ as compared to black body.
- Air refrigeration cycle is used in
- The operating pressure for refrigerating units using R-12 as a refrigerant is
- The refrigerant after condensation process is cooled below the saturation temperature before throttling.…
- A thermostatic expansion valve in a refrigeration system
- The specific humidity during cooling and dehumidification
- The advantage of dry compression is that
- The boiling point of ammonia is
- Which of the following refrigerant has the lowest boiling point?
- The evolution of heat of solution takes place in ammonia absorption plant when
- Which of the following statement is correct for ammonia as a refrigerant?
- An Electrolux refrigerator is called a __________ absorption system.
- The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
- In Electrolux refrigerator
- The process of under-cooling is generally brought about by
- When the air is passed through an insulated chamber having sprays of water maintained at a temperature…
- For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
- The specific humidity during humidification process
- The reciprocating refrigerant compressors are very suitable for
- In refrigerators, the temperature difference between the evaporating refrigerant and the medium being…
- The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
- The dry bulb temperature during sensible heating of air