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Trifluoromethyl ether as a theoretical analysis of refrigerant refrigerator

Study, the frosting on the evaporator process simulation is mainly used by the experimental fit from a number of lumped parameter model, and these models are often under specific operating conditions obtained. Thus the applicability of not very good. Propose a process of air-cooled heat pump evaporator frost dynamic distributed parameter model that the growth process of the frost layer as a porous medium, with dynamic phase change moving boundary heat and mass transfer. The results show that this model for the dynamics of the evaporator frosting. Studyontransientdistributingparametermodeloffrostinsimulationofair - cooledheatpumpAbstractAtpresent,abercrombie fitch uk, thelumpedparametermT. 3deloffrost, whichiasedorlexperienceanddependheavenly013therunningcondition,polo ralph lauren, iswidelyusedinsimulationofair-cooledheatpump. Anoveldynamicdistributingparametermodelispresentedinthispaper. ThemodeItakesthefrostdepositiononevaporatorasorledimensional, transientformulation, whosemassandheatistransferredinporosityandhasamovingboundary. ResultshowsthemodeliSitabletothesimulationafair-cooledheatpumD. Computer simulation of non-azeotropic mixture refrigerant cascade refrigerating cycle of the beam into Ke Li Pengcheng 【Xi'an Jiaotong University, Xi'an 710049,abercrombie deutschland, China Refrigeration and Cryogenic Engineering) Summary of non-azeotropic mixture refrigerant cascade is the use of non-azeotropic working refrigerator qualitative transformation of the principle of separation of a new form of refrigeration cycle, with high reliability and long life characteristics. This type of cycle refrigerator compressor only the ordinary, and the frozen pre-oil separation of the phases in the cycle without the need for change can be brought back to the compressor, it is of great significance and of great economic value. In this paper,abercrombie et fitch, PR equation of state phase equilibria in binary non-azeotropic mixture refrigerant material parameter calculation,ed hardy tøj, the use of computer simulation of the cycle in the ideal state of the cycle. Refrigerator for practical design of the study in the working fluid selection, design and related aspects of cycle parameters laid the foundation. Abstract111en0n-azeotropicmixturerefrigerantcascadecoolerbasedorlmixedrefrigerantcascade (MRC) cycleisre · gardedasoneofrefrigerantcyclewithreliabilityandlong-lifeintheory. BecausethecyclecanavoidhighpressureratioandIubricantice-blockunderveryIowtemperatures, itwi ¨ bevervusefuIinthefuture. 1epresentworksimulatedthecycleperformancewithnon-azeotropicmixedrefrigerantyPRequation. Theestablishedsimulationprocedurescanbeusedtodesignthenewtypecoolerbasedorlthecycle. Simulationofthenon-azeotropicmixedrefrigerantcascadecoolerbyComputer * National Natural Science Foundation of China (sogsc ~ o]) a 59 -

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