Abstract
A self-made solar-powered or residual heat-powered three-effect tubular solar still is used to analyze the characteristics of heat and mass transfer and study on normal-pressure and fixed-temperature heating in and fixed-power heating, attempting to figure out the principles of heat and mass transfer as well as the parameters of water production by desalination. The interior heat and mass transfer of still is consistent with three-effect energy equilibrium formula, the process of which mainly includes natural convection mass transfer and radiation heat exchange. The experimental results show that there exists a direct-proportion linear relationship between the temperature and water production by desalination at normal pressure, that at negative pressure, the water production is several times as large as that at normal pressure, increasing with the decrease of interior pressure, and reaching as high as 1.12kg/h when the temperature is at 80°C and the interior pressure is close to the saturation vapor pressure of 50kPa at the first level, and that the water yield by desalination increases as the heating power (<300W) increases, the optimal heating power is 300W and its corresponding performance ratio reaches the highest value of 1.3.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
