Refrigeration and Air Conditioning
A one tonne refrigerating machine means that

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

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Refrigeration and Air Conditioning
In a saturated air-water vapour mixture, the

Dry bulb temperature is higher than dew point temperature
Dry bulb, wet bulb and dew point temperature are same
Dew point temperature is lower than wet bulb temperature
Dry bulb temperature is higher than wet bulb temperature

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