摘要
太阳能海水淡化技术是应用集热技术或将太阳能变成电能,供海水淡化所需的全部或部分能量的制取淡水的方法。此法适宜在年平均太阳日照量在145.4 W/m^2(3000 kcal/(m^2·d))以上的边远,偏僻无水地区和岛屿上使用。该技术分直接法和间接法两种。直接法装置简单,但产水能力低,间接法装置较复杂;产水能力高。当前世界上太阳能海水淡化装置主要采用直接浅盘型蒸馏法。间接法以非集光型集热器和多效型蒸馏器组合为好。随着科学技术的发展,若太阳光发电成本下降的话,集光型集热器和多效型蒸馏器组合的间接法将有可能推广应用。
Solar energy desalination of sea water is a method of making freshwater by using solar radition receiving technique or turning solar energyinto electric energy to provide the total or part of the energy required inthe desalination of sea water.It is applicable to remote or out-of-the-wayareas without water supply and islands with an average daily sunshine over145.40 W/m^2.This method is divided into two kinds:direct and indirect.The apparatus for direct desalination is simple,but its output is low;ho-wever,that for indirect desalination is rather complicated,but its outputis high.Currently,in the world,tray-type direct distillation is mostlyused for solar energy desalination of sea water,while indirect desalinationadopts a combination of non-focusing solar radiation receiver and multipleeffect distiller.With the development of science and technology,the ind-irect method of a combination of focusing type solar radiation receiver andmultiple effect distiller will probably be popularized if the cost of solarpower generation becomes low.
出处
《水处理技术》
CAS
CSCD
北大核心
1991年第3期143-148,共6页
Technology of Water Treatment
关键词
太阳能
海水淡水
蒸馏
sea water
solar energy
desalination
distillation
