Performance evaluation of solar still integrated with thermoelectric heat pump system

IF 1.8 Q4 ENERGY & FUELS
AIMS Energy Pub Date : 2023-01-01 DOI:10.3934/energy.2023003
F. Alkilani, O. Nemraoui, F. Ismail
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Abstract

This research presents a method for improving a conventional solar still to produce potable water during adverse conditions where there is low or no solar radiation. Summer and winter conditions in the Western Cape province of South Africa were considered. A comparative experimental study was conducted between a conventional solar still and the developed solar still. The developed solar still incorporated a photovoltaic powered thermoelectric heat pump. The purpose of the thermoelectric (TE) heat pump was to accelerate convection inside the developed solar still assembly. The coefficient of performance (COP) of the thermoelectric heat pump installed in the developed solar still ranged from 0.4 to 1.9 at an input current of 5 A. The results indicated that the developed solar still was able to produce 2300 mL per day of drinkable water during a good day in the winter, but the conventional solar still was only able to produce 650 mL per day. The developed solar still produced 2180 mL per day, whereas the ordinary solar still produced 1050 mL per day, during a mild summer day. The developed still had an accumulated water production of 1180 mL during a night with mild temperatures. This significant improvement in yield of the developed solar still system is due to the change in temperature difference between the glazing and the water surface within the developed solar still. This is a significant contribution to the technology of solar water purification.
太阳能仍能与热电热泵系统集成的性能评价
本研究提出了一种改进传统太阳能蒸馏器的方法,以在太阳辐射低或无太阳辐射的不利条件下生产饮用水。考虑了南非西开普省夏季和冬季的情况。对传统的太阳能蒸馏器与研制的太阳能蒸馏器进行了对比试验研究。开发的太阳能仍然包括一个光伏供电的热电热泵。热电热泵(TE)的目的是加速太阳能蒸馏器组件内部的对流。在输入电流为5a时,安装在已开发太阳能中的热电热泵的性能系数(COP)仍然在0.4 ~ 1.9之间。结果表明,在冬季天气好的时候,开发的太阳能蒸馏器每天可以生产2300毫升饮用水,而传统的太阳能蒸馏器每天只能生产650毫升饮用水。在温和的夏季,先进的太阳能电池板每天仍能产生2180毫升,而普通太阳能电池板每天仍能产生1050毫升。在温和的温度下,开发的蒸馏器在夜间累积产水量为1180 mL。发达的太阳能蒸馏器系统产量的显著提高是由于发达的太阳能蒸馏器内玻璃和水面之间温差的变化。这是对太阳能水净化技术的重大贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
AIMS Energy
AIMS Energy ENERGY & FUELS-
CiteScore
3.80
自引率
11.10%
发文量
34
审稿时长
12 weeks
期刊介绍: AIMS Energy is an international Open Access journal devoted to publishing peer-reviewed, high quality, original papers in the field of Energy technology and science. We publish the following article types: original research articles, reviews, editorials, letters, and conference reports. AIMS Energy welcomes, but not limited to, the papers from the following topics: · Alternative energy · Bioenergy · Biofuel · Energy conversion · Energy conservation · Energy transformation · Future energy development · Green energy · Power harvesting · Renewable energy
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