Experimental study on the performance of a rotational supercavitating evaporator for desalination

查看全文 作　　者：LIKHACHEV Dmitriy [1]S;LI [1]FengChen;KULAGIN Vladimir [2]A

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology;[2]Department of Heat Technology and Fluid Dynamics, Siberian Federal University

出　　处：《Science China(Technological Sciences)》索引2014年第57卷第11期,共16页

基　　金：supported by the National Natural Science Foundation of China(Grant No.51276046);Foundation for Innovative Research Groups of the National Natural Science Foundation of China(Grant No.51121004);Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20112302110020) 摘　　要：Efforts have been made on experimental research of a supercavitation device for desalination,which is named rotational supercavitating evaporator(RSCE).The RSCE is characterised by the simple construction and responsive capacity control,and only requires rough filtration of the source water for scaling-and fouling-free operations.The present study has been conducted for the water flow at temperature of around 22–30°C and atmospheric pressure as the first step for investigation of the performance characteristics of RSCE.The multiply factor extremal experiments conducted with the Box-Wilson’s method have revealed the salinity of the condensate,the temperature of steam inside the supercavity,and dependence of the shape of supercavity on the rate of steam extraction and rotation speed of impeller.The shape of impeller and the expected supercavitating effects it generates have been confirmed by experimental results at the rotation speed of 5430 rpm(round per minute).The design of the steam extraction openings has been approved during the evacuation of steam.The experimental dependencies have been obtained in form of statistically valid regression equations,which can be used for engineering design of RSCE. 关键词：旋转蒸发器海水淡化性能特性超空泡实验旋转速度水蒸汽大气压力

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Experimental study on the performance of a rotational supercavitating evaporator for desalination

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