Refrigeration and Air Conditioning
The reduced ambient air cooling system has

Two cooling turbines and two heat exchangers
Two cooling turbines and one heat exchanger
One cooling turbine and one heat exchanger
One cooling turbine and two heat exchangers

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

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