Refrigeration and Air Conditioning
A thermostatic expansion valve in a refrigeration system

Is suitable only for constant load systems
None of these
Ensures the evaporator completely filled with refrigerant of the load
Maintains different temperatures in evaporator in proportion to load

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Refrigeration and Air Conditioning
One ton of the refrigeration is

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
The refrigeration effect to produce 1 ton of ice at NTP conditions

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