Experimental evaluation of two refrigerant mixtures in a breadboard air conditioner

摘要: An experimental, water-to-water, breadboard heat pump (that is one designed to be easily reconfigured) was constructed for comparison of pure R22 the refrigerant mixtures R22/R114 and R13/R12. Three evaporator configurations were extensively studied. In all cases best mixture outperformed R22. The efficiency with 32% higher R13/R12 16% than measured Other observations were, first, that can take advantage exchangers that, in a gliding temperature application, incapable utilizing. Secondly, exchange between condensed evaporating beneficial some mixed refrigerants. Finally, exhibit nonlinearity enthalpy versus two phase region which has significant impact on both exchanger cycle design. 12 figs.