The focus of this paper is to understand, from experimental data, the R134a refrigerant emission rates of various hose materials due to permeation. This paper focuses on four main points for hose assembly emission of R134a: (1) characteristics of hose permeation in response to the effect of oil in R134a and the characteristics of hose permeation of vapor vs. liquid refrigerant; (2) conditioning of the hose material over time to reach steady state R134a emission; (3) the relative contribution of hose permeation and coupling emission to the overall hose assembly refrigerant emission; (4) transient emission rates due to transient temperature and pressure conditions. Studies include hoses with different materials and constructions resulting in various levels of R134a permeation.
Experimental Evaluation of R134a Emission with Various Hose Constructions
Sae Technical Papers
Vehicle Thermal Management Systems Conference & Exposition ; 2005
2005-05-10
Aufsatz (Konferenz)
Englisch
Hoses , Emissions , Pressure , Refrigerants , Assembling
Experimental evaluation of R134a emission with various hose constructions
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