چكيده به لاتين
The technology of solar chimney power plants has been developed remarkably during recent years. Combination of many other systems with SCPP has been investigated to achieve higher power production and efficiency. Solar chimney systems compromise three main parts: Collector, Chimney and Turbine. Since meeting human societies’ demands for clean drinking water by using renewable energies, which are environmental friendly and safe for human health, is necessary, solar water desalination is studied in this paper. In fact, desalination system is installed under collector of the solar chimney which provides electrical power and drinking water simultaneously. Because, hybrid systems are considered as new technology, it is obvious that more investigations are required to perceive these system and find appropriate ways for their improvement. In this study, an experimental and analytical investigation for the thermal performance of water desalination system in the solar chimney is proposed. Matlab and Excel software are utilized to solve mathematical models and analyze the data. The geometry of system is defined based on the constructed pilot setup of solar chimney in Iran University of Science & Technology. The comparison between results from mathematical model and experimental data shows that the amount of desalinated water and its temperature are compatible in this two investigation methods with acceptable errors 9.32% and 7.26% respectively, which proves that the mathematical model is reliable. In addition, the effect of water depth in the performance of desalination system is investigated by the mathematical model. The study is conducted for amount of produced water and its temperature based on initial 2,4,6,8, and 10 cm water depth. It is found that decreasing initial water depth in the system, leads to higher production of desalinated water. In fact, the highest production is achieved when the water depth was 2 cm.
