This paper shows the characteristics of temperature and adsorbed (water vapor) mass rate distribution in adsorber unit which is key part to any adsorption refrigeration system. The profiles adsorption/desorption phases (Dynamic Sorption) are measured experimentally under operating conditions 90oC hot water temperature, 30oC cooling 35oC cycle time 40 min. Based on profiles, transfer equations f...

In the recent times, the use of solar energy for the refrigeration purpose has been increasing day by day. Generally, solar used for cooling purpose has proposed many advantageous features in the refrigeration field. The cooling path is basically depends on the amount of solar radiation. The more amount of solar radiation directly increases the C.O.P. of the system. In this research paper, the ...

Defrosting in supermarket refrigeration systems is normally controlled by a preset time cycle with most display cabinets timed to defrost every 6 hours. It is widely acknowledged that timed defrost may cause a number of unnecessary defrost cycles and this reduces the energy efficiency of refrigeration systems as well as the accuracy of temperature control of the cases. This paper investigates t...

Using absorption refrigeration cycles instead of vapor compression refrigeration cycles can drastically decrease energy consumption. In these systems, high level of energy consumption is reduced due to the partially elimination of vapor compression refrigeration systems. On the other hand, utilization of waste heat of the plant, which is a very good opportunity for energy saving,  is possible. ...

In this paper, an LNG BOG re-liquefaction system operating according to the Claude refrigeration cycle using oxygen as refrigerant is analysed. It includes a comprehensive exergy analysis of a BOG reliquefaction system installed onboard an LNG carrier. Commonly operating data have been used to carry out a thermodynamic analysis of the system. The system is basically made of two parts: Oxygen cy...

Transient simulations of refrigeration cycles are crucial for evaluating new refrigerants. Previously developed transient simulation tool was capable of simulating refrigeration systems using refrigerants R22 and R134a and was validated with experimental data; however, incorporating non-traditional refrigerants such as R744 (carbon dioxide) change the cycle operation beyond the capabilities of ...