| Abstrakt: |
This research introduces a hybrid humidification-dehumidification (HDH) desalination unit and dye-sensitized solar cell (DSSC) system to produce power and drinking water using the hot and humid waste air from buildings equipped with wind towers. The thermodynamic, exergeoeconomic and carbon footprint study of this hybrid system is conducted in five arid and semiarid regions, including Tehran, Isfahan, Birjand, Yazd and Kerman, located in Iran. The proposed hybrid system's thermodynamic, cost and CO2 emission rates are evaluated and compared by varying design parameters. The results indicate that increasing wind tower height and DSSC tilt angle significantly improve the thermodynamic performance of the system while rising water-to-air mass flow rate ratio (MR) and saline water temperature, respectively, lessen the cost and CO2 emission rates of the system in all desired regions. Furthermore, the system's optimum performance in each zone is identified using the multi-objective moth-flame optimization (MOMFO) and decision-making procedure. Optimization results indicate that the highest power and freshwater of 783.4 W and 120.5 kg/month, respectively, can be achieved in Birjand, and the highest energy and exergy efficiencies are obtained by 10.8% and 11.41% in Kerman. Moreover, the system delivers the lowest cost and CO2 emission rates of 0.73 $/month and 4.61 kgCO2/month in Tehran. The obtained theoretical results can be a guide for optimal design and practical application of such a system in arid and semiarid regions from the thermodynamic, economic and environmental perspectives. [ABSTRACT FROM AUTHOR] |
