Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

25°C DBT and 100% RH
22°C DBT and 60% RH
20°C DBT and 80% RH
25°C DBT and 40% RH

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Refrigeration and Air Conditioning
One ton of the refrigeration is

The refrigeration effect to produce 1 ton of ice at NTP conditions
The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours
The cooling effect produced by melting 1 ton of ice
The standard unit used in refrigeration problems

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