Steam jet cooling experienced a wave of popularity during the early 1930s for air conditioning large buildings.
Steam ejector refrigeration cycles were later supplanted by systems using mechanical compressors.
[1] Steam is passed through a vacuum ejector of high efficiency to exhaust a separate, closed vessel which forms part of a cooling water circuit.
The AT&SF railroad (Santa Fe) used this method, which they called "Steam Ejector Air Conditioning", on both heavyweight and lightweight passenger cars, built until the mid-1950s.
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