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TRANE ANNOUNCED NEW OZONE-FRIENDLY CHILLER.... VIRTUALLY NO EMISSIONS OF REFRIGERANTS

 TRANE ANNOUNCED NEW OZONE-FRIENDLY CHILLER....
 VIRTUALLY NO EMISSIONS OF REFRIGERANTS
 LA CROSSE, Wis., Oct. 8 /PRNewswire/ -- Today, the Trane Company, the world's largest manufacturer of centrifugal chillers used to cool large buildings, announced availability by mid-1993 of a "near zero" emissions HCFC-123 centrifugal chiller.
 "This is an important example of environmentally sound industrial innovation. By continuously improving our chillers designs, we've found a way to protect the earth's ozone layer even further," said James H. Schultz, executive vice president of Trane's Commercial Systems Group.
 In addition to its using the recently developed substitute refrigerant, HCFC-123 which has a very low ozone-depleting potential as well as very low greenhouse warming potential, Trane's new chiller employs over 200 new design features that virtually eliminate emissions. Traditionally used refrigerants, the CFC family of chemicals, have in recent years been shown to be highly damaging to the earth's protective ozone layer as well as potent greenhouse gasses. Trane's new chiller solves these two environmental problems while preserving indoor comfort.
 Trane made the announcement at a meeting of the 1992 international CFC and Halon Alternatives Conference in Washington, D.C. The conference is sponsored by the Alliance for responsible CFC Policy in cooperation with the U.S. Environmental Protection Agency, Environment Canada and the United Nations Environment Programme.
 "Trane has used a total system approach to develop a chiller that operates with 'near zero' emissions refrigerant," said Schultz. "This breakthrough in technology has been accomplished as a result of improved construction, purge unit efficiency, leak testing techniques, use of a low pressure design and refrigerant handling and recovery techniques."
 Trane's revision to its chiller designs include the use of improved gasket materials and minimizing the use of threaded fittings. The "near zero" emissions chiller design is made possible by the inherent advantages of low-pressure chiller design which means that, in the event of a leak, air will typically leak into the machine instead of refrigerant leaking out. In the only section of the machine that is pressurized during operation, the condenser, the pressure differential to atmosphere, which is the driving force behind the leaks, is over 20 and 30 times less than medium-pressure and high-pressure refrigerants, respectively. Trane stated, "The combining of the substantially improved hermetic integrity with inherent low-pressure characteristics of HCFC-123 are critical factors in obtaining the near zero emissions of the new chiller design." Further, leak testing is now accomplished through the use of heated pressure systems, such as the Trane PREVAC (R) and PowerPump (TM). These systems eliminate the use of noncondensibles to pressurize the chiller.
 The new purge system to be offered on these chillers releases less than .0049 pounds of refrigerant per pounds of air which equates to less than three-quarter ounce of refrigerant loss, or "near zero," per year. The improvement in purge design means that the purge will be virtually eliminated as a source of refrigerant loss.
 In addition, use of integrated, microprocessor-based controls enables the monitoring of purge operation (inherent only to low-pressure machines) as an indication of refrigerant leaks, plus monitoring of equipment room refrigerant concentrations to as low as one part per million.
 Refrigerant handling has been greatly improved by incorporation a complete system of isolation valves that enable evacuation and removal with "near zero loss of refrigerant. The use of new improved highly efficient recovery equipment, which captures over 99.94 percent of the refrigerant during transfer and recovery, limits the average loss during this process to less than eight ounces for a typical chiller.
 Schultz further stated that "...the 'near zero' emissions of the new Trane chiller design and improved servicing techniques reduce the annual loss from Trane's HCFC-123 chillers to less than 0.5 percent of its refrigerant charge compared to the typical chillers of a few years ago that lost approximately 25 percent of their charge per year."
 This announcement by Trane is significant when considering the already extremely low ozone depletion potential of HCFC-123 and the fact that HCFC-123 is the lowest global warming chemical available for use in centrifugal chillers.
 -0- 10/8/92
 /CONTACT: The Trane Company, publicity and publications, 1-608-787-3111/ CO: Trane Company ST: Wisconsin IN: SU: PDT


LD-AH -- NY106 -- 8121 10/08/92 17:54 EDT
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Date:Oct 8, 1992
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