- Steam jet cooling
Steam jet cooling uses a high-pressure jet of
steamto cool water or other fluid media. Typical uses include industrial sites, where a suitable steam supply already exists for other purposes or, historically, for air conditioningon passenger trains which use steam for heating.
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 partial vacuum in the vessel causes some of the water to evaporate, thus giving up heat through
evaporative cooling. The chilled water is pumped through the circuit to air coolers, while the evaporated water from the ejector is recovered in separate condensers and returned to the cooling circuit.
AT&SFrailroad (Santa Fe) used this method, which they called "Steam Ejector Air Conditioning", on both heavyweight and lightweight passenger cars, built until the mid 1950s.
Steam generator (railroad)
Steam jet ejector
* [http://www.freepatentsonline.com/4204410.html " Steam jet refrigeration plant"] United States patent 4204410
* [http://www.atsfry.com/Passenger/pass_ac.htm "Steam Ejector System"] "The Air Conditioning system preferred by the Santa Fe", By C. M. Drennan, The Brotherhood Railway Carmen of America
[http://www.croll.com/_website/pr/vrefsys.asp Vacuum Refrigeration Systems] Diagram of an industrial installation
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