A comparison of

CFC substitutes

and absorption, ......................................

centrifugal,

reciprocating and ......................................

screw chillers.

Directory of

Manufacturers ......................................

........................................................................................... P R O D U C T / S E R V I C E R E V I E W

Guide to Alternative Refrigerants And CFC-Free Chillers

any facilities are currently developing management plans to address ways M to conserve, recover and recycle existing

refrigerants, while a growing number of companies are considering CFC substitutes that involve chiller conversion or replacement. In our special report last summer, criteria were offered for evaluating refrig- erant and chiller options. With regard to refriger- ants, the decision may be driven by the availability of current supplies, the timing of taxes and the cost of CFC substitutes. For chillers, the decision is no less complex, with considerations involving installed cost, life-cycle cost, environmental impact, safety, efficiency and potential loss in capacity.

If the detailed analysis of an individual installa-

Allied-Signal lnc., Fluorocarbons P.O. Box 1139, Morristown, NJ 07962

Carrier Corporation P.O. Box 4808, Carrier Parkway Syracuse, NY 13221, (315) 432-6000 Du Pont Fluorochemicals 1007 Market St., Brandywine Bldg., 13th F1. Wilmington, DE 19898, 1-(800) 441-9442 Dunham-Bush, Inc., Applied Products Division 101 Burgess Rd., Harrisonburg, VA 22801

Elf Atochem North America, Fluorochemicals Three Parkway, Rm. 908, Philadelphia, PA 19102

IC1 Chemicals 8, Polymers, Fluorochemicals Business Group 341 1 Silverside Rd., Concord Plaza, Tatnall-2 Wilmington, DE 19897, (302) 886-4563 SnyderGeneral Corporation/McQuay 13600 Industrial Park Blvd., P.O. Box 1551 Minneapolis, MN 55441, (612) 553-5091 The Trane Company, Commercial Systems Group 3600 Pammel Creek Rd. La Crosse, WI 54601-7599 Contact local sales office. York Internotional Corporation, Applied Systems P.O. Box 1592, York, PA 17405

.................................................................................

(201) 455-2978

(703) 434-071 1

(215) 587-7335

~

(717) 771-7890

tion indicates that a new refrigerant andlor a new chiller is desirable, the choices on the market are extensive. Refrigerant producers are offering HCFC- 123 and HFC-134a as substitutes for CFC-11 and CFC-12; replacements for R-502 are also becoming available for many applications. Chiller manufac- turers are introducing new and re-designed “CFC free” models as alternatives to conventional centrifu- gal, screw and reciprocating equipment. Some compa- nies have also introduced or re-introduced absorp- tion and ammonia chillers as additional options.

To provide further guidance on replacement op- tions, AIPE FACILITIES has prepared detailed comparison data on alternative refrigerants and CFC-free chillers. To compile this data, a generic questionnaire was prepared and sent to all major refrigerant producers and chiller manufacturers. Their responses may be found on the following pages.

In interpreting the data on refrigerants, note the following:

Under “Environmental Considerations,” the ozone depletion potential (ODP) and halocarbon global warming potential (GWP) data is given where CFC-11 equals 1.0 on each fluorocarbon scale. Refrigeranj producers were asked to pro- vide GWP data based on a 100-year horizon.

0 Under “Safety Considerations,” the “Chronic Exposure Limit” is based on allowable exposure limit (AEL) or threshold limit value (TLV). The ANSVASHRAE Standard 34 Classification A1 indicates a lack of toxicity below 400 ppm and no flame propagation; Classification B1 indicates evidence of toxicity below 400 ppm and no flame propagation. Under “Performance,” companies were asked to describe how a refrigerant change-out may alter the operating efficiencykapacity of various chillers.

For the comparison data on chillers, note the following:

“Sample Energy Efficiencies” are given for elec- tric, gas-fired and steam-fired chillers. Efficiency figures may be indicated within a range. Under “Features,” the items included were con- sidered important to making a chiller purchasing decision. For more details about specific features and benefits, contact the manufacturers listed.

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Corporation + Open Drive

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