Refrigeration and Air Conditioning
In a lithium bromide absorption refrigeration system

Water is used as a refrigerant and lithium bromide as an absorbent
Ammonia is used as a refrigerant and lithium bromide as an absorbent
None of these
Lithium bromide is used as a refrigerant and water as an absorbent

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Refrigeration and Air Conditioning
It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature to 50% relative humidity and 25° C dry bulb temperature (room condition). The practical arrangement will be

Cooling and dehumidification
Cooling and humidification
Dehumidification
Dehumidification and pure sensible cooling

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