Enhanced Performance of Solar Diffusion Driven Desalination

被引：8

作者：

Alnaimat, Fadi ^{[1
]}

Klausner, James F. ^{[1
]}

机构：

[1] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA

来源：

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS | 2013年 / 5卷 / 04期

关键词：

desalination; HDH; renewable energy; solar energy; evaporation; condensation; transient; HUMIDIFICATION; CONDENSATION; EVAPORATION;

D O I：

10.1115/1.4024020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study concerns an improvement in the solar diffusion driven desalination process under dynamic operating conditions for decentralized water production. The utilization of a heat exchanger for the solar diffusion driven desalination (DDD) process to recuperate the latent heat of condensation has been examined. It is found that the recuperated latent heat is best used for preheating the air inlet to the evaporator. Improvements in the system performance are achieved by increasing fresh water production by 30% for the solar DDD with a 0.75 effectiveness in the integrated heat exchanger. A theoretical model is implemented for analyzing the integrated desalination system, and a numerical assessment of the system performance for different operating conditions is presented. It is found that the installation of a heat exchanger for heat recovery in the air stream prior to entering the direct contact condenser increases the water production rate and reduces the specific energy consumption. It is concluded that the delayed operating mode for the solar DDD with an integrated heat exchanger is the best operating mode.

引用

页数：9

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