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论文类型：期刊论文

发表时间：2013-07-01

发表刊物：SOLAR ENERGY

收录刊物：SCIE、EI

卷号：93

页面范围：144-150

ISSN号：0038-092X

关键字：Solar desalination; Evacuated tube collectors; Low-temperature multi-effect distillation (LT-MED); Heat storage tank; Water cost

摘要：Conventional seawater desalination technology could solve the problem of fresh water shortage, but consumes a large amount of fossil fuel and causes the environmental problems such as global warming and acid rain. On account of this, solar desalination is one of the promising methods. The thermal and economic performance on solar desalination system with evacuated tube collectors and low temperature multi-effect distillation is researched in this paper. Mathematical and economic models are established based on mass and energy conservation, which conclude evacuated tube collector model, heat storage tank model, flash tank model, multi-effect distillation model and electrical heating and cooling model. Taking actual operation into account, the influence of the heating steam temperature of the first effect and the effect number of multi-effect distillation system on system performance is analyzed. The cost constitution of solar desalination system with evacuated tube collectors is shown, and the proportion of the cost of evacuated tube collector is the largest. The water cost is given out to appreciate the economic performance of the solar desalination system. The conclusions are helpful to the design and operation of solar desalination plant. (C) 2013 Elsevier Ltd. All rights reserved.