A Drop-In CFC-12 Replacement for Automotive Airconditioning
نویسندگان
چکیده
There currently exists a large number (millions) of automobiles with air conditioning systems designed to use CFC-12 as the refrigerant along with plans to produce ~uch systems into the 1992-1995 time frame. During the 1992-1995 period, new production will transition to HFC-134a refrigerant based systems or other technologleS which offer zero or llttle ozone depletion. CFC-12 based systems will finally cease production around 1995, but they will have a lifetime of about 10 years, extending the need for CFC-12, or a substitute until the year 2005 or so. This paper will present a ternary blend of refrigerants which may be able to be used as a transitlon refrigerant in CFC-12 designed automotive air conditioners until HFC-l34a and other technologies are able to take over. Performance, oil miscibllity, flammability, toxicity, and testing with a commercial dehydrant/leak sealant wlll be discussed.
منابع مشابه
Some Safety Studies of a Ternary Refrigerant
A ternary blend of refrigerants composed of HCFC-22, HCFC-142b (chlorodifluoroethane), and a small amount of isobutane, has been used as a drop in substitute for CFC-12 and R-500 refrigerants. It's use as a refrigerant was presented at the Purdue 1992 International Refrigeration Conference--Energy Efficiency and New Refrigerants[ I] . This paper will cover safety related issues and testing perf...
متن کاملHigh Efficiency Compact Rotary Compressor Using the New Refrigerant HFC-134a for Automotive Air Conditioners
In accordance with worldwide consensus, the use of chlorofluorocarbons, which play an important role in damaging the ozone layer, should be completely abolished by the end of 1995. This provided the impetus for developing the three vane rotary compressor. Formerly CFC-12 was used as the refrigerant in automotive air conditioners, until HFC-134a was substituted for CFC-12. In response to the cha...
متن کاملConcept design of Vehicle Structure for the purpose of computing torsional and bending stiffness
Automotive design engineers face the challenging problem of developing products in highly competitive markets. In this regard, using conceptual models in the first step of automotive development seems so necessary. In this paper, to make a body in white conceptual model, an engineering approach is developed for the replacement of beam-like structures, joints, and panels in a vehicle model. The ...
متن کاملPrinciples Of Refrigerant Circuit Optimization In Single Row Microchannel Condensers
Automotive HVAC systems manufacturers were the first to introduce microchannel condensers in the comfort airconditioning market. HVAC&R original equipment manufacturers have followed their lead and recently started using microchannel condensers in residential and commercial cooling and heat pump applications. These applications began less than a decade back and their number has been increasing ...
متن کاملReplacement of Chlorofluorocarbons (cfc) in Metered Dose Inhalation Products
Additional Notes This guideline is intended to facilitate companies in compiling the dossier for submission for the replacement of a CFC propellant in an already authorised medicinal product. It identifies the considerations of quality, safety and efficacy which should be taken into account. The need for this guideline has been accentuated by the imminent lack of availability of existing replac...
متن کامل