Ammonia is
Non-toxic
Non-inflammable
Toxic and non-inflammable
Highly toxic and inflammable
- In a vapour compression refrigeration system, a throttle valve is used in place of an expander because
- The process, generally used in summer air conditioning to cool and dehumidify the air, is called
- The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
- The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed…
- The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called
- The air cooling system mostly used in transport type aircrafts is
- Which of the following cycles uses air as the refrigerant?
- For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied…
- Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption…
- Pick up the wrong statement. A refrigerant should have
- A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250…
- The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
- The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature…
- Aqua ammonia is used as refrigerant in the following type of refrigeration system
- Air refrigerator works on
- The boiling point of ammonia is
- In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as…
- The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
- The boiling point of carbon dioxide is
- In a reversed Brayton cycle, the heat is absorbed by the air during
- Chaperon equation is applicable for registration at
- During humidification process, __________ increases.
- Most of the domestic refrigerators work on the following refrigeration system
- Choose the correct statement
- A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing…
- The dry bulb temperature during sensible heating of air
- The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
- On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line…
- For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet…
- A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine…