Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Dew point temperature of air
Wet bulb temperature of air
Ambient air temperature
Dry bulb temperature of air

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Refrigeration and Air Conditioning
A one tonne refrigerating machine means that

One tonne of water can be converted into ice
One tonne refrigerant is used
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 is the total mass of machine

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