Abstract This paper presents a theoretical analysis of the monthly average daily and hourly performances of a solar-powered multi-stage direct contact membrane distillation (SMDCMD) system with an energy recovery scheme and dynamic operating system. Mid-latitude meteorological data from Busan, Korea is employed, featuring large climate variation over the course of one year. The number of module stages used by the dynamic operating scheme changes dynamically based on the inlet feed temperature of the successive modules, which results in an improvement of the water production and thermal efficiency. The simulations of the SMDCMD system are carried out to investigate the spatial and temporal variations in the feed and permeate temperatures and permeate flux. The monthly average daily water production increases from 0.37 m 3 /day to 0.4 m 3 /day and thermal efficiency increases from 31% to 45% when comparing systems both without and with dynamic operation in December. The water production with respect to collector area ranged from 350 m 2 to 550 m 2 and the seawater storage tank volume ranged from 16 m 3 to 28.8 m 3 , and the solar fraction at various desired feed temperatures from 50 °C to 80 °C have been investigated in October and December.

中文翻译：

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动态太阳能多级直接接触膜蒸馏系统：概念设计、建模和仿真

摘要 本文对具有能量回收方案和动态操作系统的太阳能多级直接接触膜蒸馏 (SMDCMD) 系统的月平均日和小时性能进行了理论分析。采用韩国釜山中纬度气象资料，一年内气候变化较大。动态运行方案使用的模块级数根据连续模块的入口进水温度动态变化，从而提高产水和热效率。进行 SMDCMD 系统的模拟以研究进料和渗透温度以及渗透通量的空间和时间变化。月平均日产水量从 0.37 m 3 /天增加到 0。在 12 月份比较没有和有动态运行的系统时，4 m 3 /天和热效率从 31% 增加到 45%。收集器面积的产水量为 350 m 2 至 550 m 2 ，海水储罐容积为 16 m 3 至 28.8 m 3 ，各种所需进料温度下的太阳能分数为 50 °C 至 80 °C已于 10 月和 12 月进行了调查。