Regarding some serious problems like the energy crisis and environmental issues associated with the conventional compression refrigeration system, thermal refrigeration systems were therefore developed to overcome the mentioned problems. In this study, a completely novel integrated adsorption and absorption (AD-AB) refrigeration system driven by a low-grade heat source is proposed. Of importance, this novel cycle focuses on the inherent characteristics of the adsorption and absorption phenomena in the system. The innovation here is that the generator of the absorption cycle becomes the evaporator of the adsorption cycle. Therefore, the generation and evaporating pressure is no longer determined by the cooling and chilled water temperatures and the pressure is associated with the heat source temperature. This results in a new phenomenon of absorption, adsorption and the coupling of generation of solution and adsorption of refrigerant. The results reveal that the system enjoys a considerable high COP when a low-grade heat source is available.
Keywords integrated AD-AB system, absorption, adsorption, COP, low-grade thermal energy, energy Efficiency.