POTABLE WATER PREPARATION FROM SEAWATER USING COMBINED SOLAR CHIMNEY TECHNOLOGIES

摘要

Aiming at solving the two problems being faced with today of fresh water shortage and increasing power demand, a new kind of integrated systems was designed for producing fresh water, electricity and salt at the same time. The new system was put forward based on solar chimney principle. It eliminates the disadvantages of every involved sectional technology with only one product, such as solar chimney power technology, ASD system and solar seawater desalination technology. Performance analyses were made on three designs firstly. Then, direct and indirect heat exchanging experimental systems were set up to verify the calculated results. Simple theoretical models were developed for investigating saturated air condensation process. According to the experimental data and theoretical results, the direct system was crossed out for little fresh water production, while the practical feasibility of indirect systems was verified.