DE-93-09-3 -- Experimental Evaluation of an R-32/R-134a Blend as a Near Drop-In Substitute for R-22

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Sanvordenker, K. S.ASHRAE / 1993

States that, based on thermodynamic properties and environmental acceptability, a 30%/70% blend by mass of R32 and R134a was evaluated as a near drop-in alternative to R22 for use in unitary hermetic compressors. Calorimeter data based on ASHRAE and ARI standard test methods were determined and the results interpreted according to ARI standard 540-91. States the results indicate that this blend is as close as can be expected to being a 'drop-in' replacement for R22. Discusses aspects of environmental acceptability as well as those of materials compatibility. KEYWORDS: Refrigerants, R22, mixtures, R32, R134a, thermodynamics, replacing, hermetic compressors, environment, standards, USA, calorimeters, experiment, testing.Citation: ASHRAE Trans., 1993, vol.99, part 2, paper number DE-93-9-3, 773-778, 5 figs, 1 tab, refs

Product Code(s): D-17499




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