Refrigeration and Air Conditioning
A one tonne refrigerating machine means that

One tonne is the total mass of machine
One tonne of water can be converted into ice
One tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min
One tonne refrigerant is used

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Refrigeration and Air Conditioning
In a lithium bromide absorption refrigeration system

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

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