利用超声波雾化器和纳米炭黑提高半球形太阳能蒸馏器的性能

IF 5.1 3区 工程技术 Q2 ENERGY & FUELS
Mohamed A. Dahab , Ali A. El-shafei , Gamal B. Abdelaziz , Swellam W. Sharshir
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引用次数: 0

摘要

为解决水资源短缺和环境问题,本研究建议对半球形太阳能蒸馏器进行若干改造,以提高生产率,同时保持有竞争力的水价。蒸馏器配备了超声波雾化器,以提高全天的水蒸发量。研究调查了雾化器上方的水高度及其数量的影响。研究了三种改进设计情况下的系统性能:情况 1;与雾化器一体化;情况 2;雾化器与开关定时器相结合;情况 3;纳米炭黑颗粒与雾化器和定时器相结合。结果表明,在四个雾化器和雾化器上方 1 厘米水高的情况下,生产率达到 3.966 升/平方米,能效和能源效率分别为 1.87 % 和 23.22 %。此外,该装置还安装了一个开关定时器,以测试不同开关持续时间(15 分钟、20 分钟和 25 分钟)下的性能。在间隔 20 分钟的情况下,这些数值上升为生产率、能效和放能效。分别为 6.393 升/平方米、38.75 % 和 2.95 %。此外,炭黑纳米粒子的实施与间歇式雾化器的运行一起集成到蒸馏器中。这种集成进一步将生产率提高到 7.321 升/平方米,显著提高了放能(3.81 %)和能效(44.22 %)。与未改装的半球形蒸馏器相比,改装后的蒸馏器在三种情况下的生产率分别提高了 40.5 %、104.1 % 和 137.1 %。从经济角度来看,改良蒸馏器的水价大大降低,从 0.0128 到 0.0205 美元/升不等,而传统蒸馏器的水价为 0.0229 美元/升。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Augmentation of hemispherical solar distiller performance utilizing ultrasound atomizers and carbon black nanoparticles
Addressing the water shortage and environmental concerns, this study suggests several modifications to the hemispheric solar still aiming to increase productivity while maintaining a competitive water price. The distiller is enhanced with an ultrasonic atomizer to improve water evaporation throughout the day. The study investigates the impacts of both the water height above the atomizers and their quantity. The system performance was investigated under three cases of modified design, Case 1; integration with atomizers, Case 2; combined atomizers with on–off timer, Case 3; augmented carbon black nanoparticles with atomizers and timer. Results indicated that with four atomizers and 1 cm water height above them, the productivity reached 3.966 L/m2, with exergetic and energetic efficiencies of 1.87 % and 23.22 %, respectively. Additionally, an on–off timer is incorporated into the unit to test performance under different on–off durations (15 min, 20 min, and 25 min). With a 20-minute interval, these values escalated to production rate, energy, and exergy efficiency. 6.393 L/m2, 38.75 %, and 2.95 %, respectively. Furthermore, carbon black nanoparticle implementation is integrated into the distiller alongside intermittent atomizer operation. This integration further boosts productivity to 7.321 L/m2, significantly improving exergy (3.81 %) and energy efficiencies (44.22 %). Compared to a non-modified hemispheric distiller, the modified distillers show productivity enhancement ratios of 40.5 %, 104.1 %, and 137.1 % for the three cases, respectively. From an economic perspective, the water price is substantially lower for the modified distillers, ranging from 0.0128 to 0.0205 USD/L, compared to 0.0229 USD/L for the traditional distiller.
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来源期刊
Thermal Science and Engineering Progress
Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
7.20
自引率
10.40%
发文量
327
审稿时长
41 days
期刊介绍: Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.
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