Commander, Naval Air Systems Command, Code AIR-21511, Washington, DC 20361-2150

41 -- AIRCRAFT VAPOR CYCLE REFRIGERANT TESTING POC Contact, RANDALL COHEN, Phone (703)604-2000 The Naval Air Systems Command desires to competitively procure engineering services to access the refrigerant compatibility and the performance impact of converting two 4 to 6 ton air-conditioning systems to R-134A on the air-conditioning systems in the VH-3 and VH-60 Executive Helicopters. One will be converted from R-12 refrigerant and the other from R-500 refrigerant. For this purpose ''A-B'' comparison refrigerant tests are required. The tests are to be conducted in a Climatic Test Chamber designed to test refrigerant systems in accordance with ASHRAE 37.1988 Standards. The facility must be certified to recover refrigerants and recharge refrigerant systems in accordance with EPA Standards. The facility must be capable of testing to the following conditions at 80% of its capacity (or demostrate system (facility) stability at higher values): a) 103 degrees F @ 50% Relative Humidity; b) 90 degrees F @ 60% Relative Humidity; and c) 110 degrees F @ 50% Relative Humidity. Test conditions must be maintained within +/-0.5 degrees dry bulb temperature and +/-0.3 degrees wet bulb temperature. Test pressure and temperature measurements shall be performed in accordance with ASHRAE 41.1 Standards. The facility must have the capability of providing air pressure/flow control of at least 5 inches w.g. chamber static pressure delta, (drop/loss across the evaporator blower, exclusive of the evaporator heat exchanger and water separator.) Overall system instrumentation accuracy shall be demonstrated (Error Analysis) to be no greater than +/-3% at the test points. Test procedures, analysis, and documentation of results thereof, shall be approved by the contracting agency. Companies interested in bidding for the effort described above should submit a request for the solicitation in writing to Mr. Randall Cohen, Naval Air Systems Command (Code 2.3.1.1), 1421 Jefferson Davis Highway, Arlington, VA 22243-5120. - NAVAIR Synopsis No. 50053-95. (0094)

Loren Data Corp. http://www.ld.com (SYN# 0298 19950405\41-0003.SOL)