Performance Evaluation of Pure and Mixed Refrigerants in Domestic Refrigerators: Drop-in Replacement of R12
نویسندگان
چکیده
Properties of refrigerant/lubricant mixtures are important for design and reliable operation of vapor compression and absorption refflgeration equipment. £valuatJOn of substitute refrigerants and lubncants tor CFCs and of new working fluids for absorption systems can be enhanced by the availability of rap1d and accurate methods for determimng fluid properties. This paper descnbes new methods for measurmg viscosity and pressure of refrigerant/lubricant mixtures over com. positions fo zero to one hundred percenr and temperatures from -40 to + 150 Celsuis. The equipment and methods can also be applied to fluids for absorption systems. Automatic data acqwsition, data reduction and computer generated graphics are utilized. Typical VISCosity-pressure-temperature-composition data are presented to illustrate engmeering applicability.
منابع مشابه
Thermodynamic Analysis of Refrigerators Using Different Refrigerants
Refrigerants that are used in refrigeration systems, cause environmental difficulties such as depletion of ozone layer and greenhouse effect. Thus, we must find substitutes for such refrigerants, in this paper, the effect of refrigerant on the thermodynamics performance of refrigeration cycles are studied. To do this, a refrigerator that has designed for R12, is simulated. Results show that pur...
متن کاملThermodynamic Analysis of Refrigerators Using Different Refrigerants
Refrigerants that are used in refrigeration systems, cause environmental difficulties such as depletion of ozone layer and greenhouse effect. Thus, we must find substitutes for such refrigerants, in this paper, the effect of refrigerant on the thermodynamics performance of refrigeration cycles are studied. To do this, a refrigerator that has designed for R12, is simulated. Results show that pur...
متن کاملInvestigation of Household Refrigerator with Alternative Low Global Warming Potential Refrigerants
Title of Document: INVESTIGATION OF HOUSEHOLD REFRIGERATOR WITH ALTERNATIVE LOW GLOBAL WARMING POTENTIAL REFRIGERANTS Daniel Thomas Leighton, Master of Science, 2011 Directed By: Professor Reinhard Radermacher, Mechanical Engineering Steady-state and transient thermodynamic models of the refrigeration system were created in order to predict the performance of household refrigerators using diffe...
متن کاملArtificial Neural Network Involved in the Action of Optimum Mixed Refrigerant (Domestic Refrigerator) (TECHNICAL NOTE)
This analysis principally focuses on the implementation of Radial basis function (RBF) and back propagation (BPA) algorithms for training artificial neural network (ANN) to get the optimum mixture of Hydro fluorocarbon (HFC) and organic compound (Hydrocarbons) for obtaining higher coefficient of Performances (COPs). The thermodynamical properties of mixed refrigerants are observed using REFPROP...
متن کاملComparative Performance of Hydrocarbon Refrigerants
Measurements on R600a refrigerators have shown electricity savings over R134a and R12 up to 20%. We propose new parameters which are functions of well known refrigerant properties. These parameters show that R600a has half the leakage, pressure loss and condenser pressure and double the heat transfer coefficient of R12 and R134a explaining the measurements. Use of R600a in small heat pumps and ...
متن کامل