Enhancement the productivity of drum solar still utilizing parabolic solar concentrator, phase change material and nanoparticles' coating

被引:40
作者
Alqsair, Umar F. [1 ]
Abdullah, A. S. [1 ,2 ]
Omara, Z. M. [3 ]
机构
[1] Prince Sattam bin Abdulaziz Univ, Coll Engn, Dept Mech Engn, Alkharj 16273, Saudi Arabia
[2] Tanta Univ, Fac Engn, Mech Power Engn Dept, Tanta 31734, Egypt
[3] Kafrelsheikh Univ, Fac Engn, Mech Engn Dept, Kafrelsheikh 33516, Egypt
关键词
Drum solar still; Solar still; PCM; Parabolic solar concentrator; Nanoparticle coating; External condenser; HEAT-TRANSFER; PERFORMANCE ANALYSIS; WICK; DESALINATION; NANOFLUIDS; AUGMENTATION; ABSORBER; EXERGY; HYBRID; SYSTEM;
D O I
10.1016/j.est.2022.105477
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This study aims to improve fresh water productivity from seawater or brackish water utilizing renewable en-ergies by a solar desalination system, so an experimental study conducted to improve the performance of the drum solar still (DSS) utilizing transparent walls of SS, parabolic solar concentrator (PSC), phase change material (PCM), nanoparticles' coating (NC) and external condenser. PSC will be utilized to concentrate sun rays on the drum's back side, which raised the rate of evaporation, but the high temperature of the glass due to the presence of the PSC has a negative impact on the solar still's condensation rate. Two different methods used to solve the problem of high temperature of the glass to increase the productivity of the DSS, the first, using a fan to draw the generated vapor and condense it in an external condenser and the second is use of PCM-Ag mixture to absorb the excess energy in times of intense radiation and recover it after that at the time of low radiation. The results indicated that, the boiling point of saline water inside the DSS was reached using the new design of the DSS basin, which led to a significant increase in the amount of evaporation. Additionally, the maximum improves in DSS productivity when utilized NC, PSC and external condenser was achieved at 0.3 rpm, where the production enhancement was around 320 % with efficiency of 72 %.
引用
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页数:14
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