Sökning: "refrigerant properties"
Visar resultat 6 - 8 av 8 avhandlingar innehållade orden refrigerant properties.
6. Bearing lubrication of refrigeration screw compressors
Sammanfattning : The bearings in a modern refrigeration screw compressor are lubricated with a mixture of oil and refrigerant. However, little or no published bearing life data is available for the new generation non-chlorinated refrigerants. LÄS MER
7. Elastohydrodynamic lubrication and lubricant rheology in refrigeration compressors
Sammanfattning : The introductory chapter gives a general description of the lubrication of rolling element bearings in refrigeration compressors and rheological properties of oil-refrigerant mixtures. The influence of refrigerants on the viscosity, pressure-viscosity coefficient and film forming ability in a EHD-contact is described. LÄS MER
8. Heat and Mass Transfer Investigations of Relevance for Food Engineering Applications
Sammanfattning : This thesis concerns two interrelated subjects of heat and mass transfer processes. The first one concerns mainly experimental measurements, with a subsequent development of a calculation procedure, of the thermal and hydraulic performances, experimental methods and evaluation procedures applied on various plate heat exchangers (PHEs) as evaporators with the refrigerant ammonia as working medium. LÄS MER