A magnetic refrigeration test device has been built and tested. The device allows variation and control of many important experimental parameters, such as the type of heat transfer fluid, the movement of the heat transfer fluid, the timing of the refrigeration cycle, and the magnitude of the applied magnetic field. An advanced two-dimensional numerical model has previously been implemented in o...

In this study, a cascade refrigeration system comprising gas and vapor compression cycles operating at ultra-low temperature was designed. the thermodynamic analyses, R744, R404A, R410A refrigerants in high cycle (HTC), R1150, R170, R23 low (LTC) were used. Thermodynamic analyses carried out using Engineering Equation Solver package program. Outputs considered were: performance(COP), ratio, mas...

A novel capillary tube has been tested and evaluated experimentally in the refrigeration cycle of window type air conditioner. Three twisted capillary tubes have been demonstrated and evaluated to show the performance of these tubes and its ability in the depressurization process seeking for short capillary tube. The effect of twist angle and the number of twisted points on the refrigeration cy...

the effect of temperature on the viscoelastic behavior of chicken meat frankfurters was assessed by creep recovery tests. compression creep-recovery tests were performed at room temperature (20°c) and refrigeration (5°c) on samples of cylindrical shape. the viscoelastic behavior of samples was characterized based on the parameters of the four-element burgers model. during the compression phase,...

The well-known traditional vapor compression refrigeration cycle is considered to be the most effective technique used in field of and air-conditioning systems. It’s almost every facility including industrials, homes food storages. There are some environmental hazards concerning use vapor-compression cycles such as global warming ozone layer depletion mainly due refrigerant's leakages. However,...