Performance improvement in stepped solar still modified by sponge layer  

采用海绵层提升阶梯式太阳能蒸馏器性能

作　　者：Mahtab TARAHOMI Saman RASHIDI Faramarz HORMOZI Shahabeddin ASHTIANI 

机构地区：[1]Department of Chemical,Petroleum,and Gas Engineering,Semnan University,Semnan,Iran [2]Department of Energy,Faculty of New Sciences and Technologies,Semnan University,Semnan,Iran

出　　处：《Journal of Central South University》2024年第6期1973-1982,共10页中南大学学报（英文版）

摘　　要：In this paper,the experimental investigation on the performance improvement of conventional stepped solar still is conducted.The steps are covered by the porous material to improve the performance of the conventional device and increase the evaporation rate.All the parameters,including the temperature on the glass surface,the water temperature inside the evaporation zone,and the amount of water produced in both conventional and modified stepped solar stills are measured and compared.The efficiency of two devices and their exergy efficiency have been calculated.Finally,the economic analysis of both devices has been done to check the economic feasibility of the modified device.The amount of freshwater generated during one day was 2244.4 and 3076.2 mL/m^(2),respectively for the conventional and modified stepped solar stills.As a result,the amount of water produced in one day by modified stepped solar still is 35.5% more than the conventional one.Also,the costs for the conventional and modified stepped solar stills have been calculated as 0.0359 and 0.029$/(L·m^(-2)),respectively.本文对传统阶梯式太阳能蒸馏器的性能进行改进。采用多孔材料覆盖阶梯,以改善常规装置的性能并提高蒸发速率。对玻璃表面温度、蒸发区水温、常规和改进的阶梯式太阳能蒸馏器的产水量等参数进行了测量和比较。计算了两种装置的效率及其火用效率。最后,对两种装置进行了经济分析,验证了改进装置的经济可行性。常规和改进的阶梯式太阳能蒸馏器一天的淡水产生量分别为2244.4 mL/m^(2)和3076.2 mL/m^(2)。结果表明,改良的阶梯式太阳能蒸馏器的日产水量比传统太阳能高出37.06%。此外,传统和改进的阶梯式太阳能蒸馏器的成本分别为0.0359$/(mL·m^(-2))和0.029$/(L·m^(-2))。

关 键 词：stepped solar still black sponge EFFICIENCY EXERGY economic analysis 

分 类 号：P747[天文地球—海洋科学] TK513[动力工程及工程热物理—热能工程]