علي خباززاده

Lack of drinking water all over the world, especially in desert areas, is one of the problems that threatens the survival of the human race. Especially in Iran, due to the lack of rainfall and climate changes, as well as population growth, this issue has become a fundamental problem. A solution for this problem is adsorption based desalination (AD), which is an emerging thermal method and is considered a competitive desalination procedure compared to the conventional ones. This method produces the simultaneous cooling effect and desalinated water with low-grade heat sources such as solar energy. Also, it has been proven that this method is effective in cleaning all forms of salt from water and has good energy efficiency and low start-up cost and is also environmentally friendly. In this study, after eva‎luation of the basic system and the effect of design parameters on the performance of this system, in the next step, the effect of adding the ejector along with the secondary evaporator and also the internal heat recovery circuit to the adsorption desalination system has been examined. The results show that the performance of the proposed system (ADEJ-HR) compared to the base system (ADCS) has been improved from the perspective of the specific daily water production SDWP, coefficient of performance COP and the performance ratio of the system PR by 2.34 times, 2.4 times and 1.67 times, respectively. also The specific cooling power of the system SCP has also been improved by 29.1%. In this study, exergy analysis is also performed and the results indicate a 51% improvement in the exergy efficiency of the proposed system compared to the basic system. Multi-objective optimization is also done based on genetic algorithm and the optimal values of design parameters are reported. At the end, performance of the solar powered hybrid ADEJ-HR system for the production of cold and fresh water has been investigated using TRNSYS software. As the input weather data, the data file of the typical meteorological year (TMY) for the city of Bandar Abbas, located in the south of Iran, has been used. the annual average values of SDWP, SCP and COP for the investigated system are equal to 15.8 m3/ton, 160 W/kg and 1.2, respectively. The obtained results indicate that the investigated hybrid system is suitable for Iran's weather conditions (desert areas where there is a much need for cooling and fresh water production) and it can be effectively run by solar energy.

نمك‌زدايي جذب سطحي , اجكتور , مدار بازيابي حرارت داخلي , آناليز اگزرژي , بهينه‌سازي چندهدفه , سيستم تركيبي با انرژي خورشيدي

adsorption desalination , ejector , internal heat recovery circuit , exergy analysis , multi-objective optimization , solar powered hybrid system

ali khabbazzade

Dr. Sepehr Sanaye