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Energy and Exergy Analysis for Single Slope Passive Solar Still with Different Water Depth Located in Baghdad Center

Khafaji, Hayder Q. A. ; Abdul Wahhab, Hasanain Adnan ; Al-Maliki, Wisam Abed Kattea ; Alobaid, Falah ; Epple, Bernd (2022)
Energy and Exergy Analysis for Single Slope Passive Solar Still with Different Water Depth Located in Baghdad Center.
In: Applied Sciences, 2022, 12 (17)
doi: 10.26083/tuprints-00022321
Article, Secondary publication, Publisher's Version

Abstract

In the present experimental work, the energy and exergy for single slope passive solar still with different basin water depths are experimentally investigated under the Baghdad climate condition. The analysis is performed using the governing equations formulated according to the first and second laws of thermodynamics. Compared to solar still with 1 cm water depth, the obtained results indicated that raising the water depth to 2 and 3 cm caused an appreciable drop in water basin temperature, and high levels of water basin reduction were about 4% and 9%, respectively, from 8:00 a.m. to 14:00 p.m., which significantly affects heat and mass transfer and ultimately hinders further water productivity. The maximum evaporation and convection heat transfer coefficients are found (32 W/m²·k) and (2.62 W/m²·k), respectively, while the maximum productivity of solar still is found to be 1468.84 mL/m² with 1 cm water depth. Conversely, stills with 2 and 3 cm water depth, exhibit an increment of the daily exergy efficiency after 14:00 p.m., this increment was the most for the still with 3 cm water depth. Therefore, we have concluded that the still with 1 cm of water depth attained the highest water productivity, while the still with 3 cm of water depth attained the best exergy efficiency with no additional costs.

Item Type: Article
Erschienen: 2022
Creators: Khafaji, Hayder Q. A. ; Abdul Wahhab, Hasanain Adnan ; Al-Maliki, Wisam Abed Kattea ; Alobaid, Falah ; Epple, Bernd
Type of entry: Secondary publication
Title: Energy and Exergy Analysis for Single Slope Passive Solar Still with Different Water Depth Located in Baghdad Center
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Applied Sciences
Volume of the journal: 12
Issue Number: 17
Collation: 14 Seiten
DOI: 10.26083/tuprints-00022321
URL / URN: https://tuprints.ulb.tu-darmstadt.de/22321
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

In the present experimental work, the energy and exergy for single slope passive solar still with different basin water depths are experimentally investigated under the Baghdad climate condition. The analysis is performed using the governing equations formulated according to the first and second laws of thermodynamics. Compared to solar still with 1 cm water depth, the obtained results indicated that raising the water depth to 2 and 3 cm caused an appreciable drop in water basin temperature, and high levels of water basin reduction were about 4% and 9%, respectively, from 8:00 a.m. to 14:00 p.m., which significantly affects heat and mass transfer and ultimately hinders further water productivity. The maximum evaporation and convection heat transfer coefficients are found (32 W/m²·k) and (2.62 W/m²·k), respectively, while the maximum productivity of solar still is found to be 1468.84 mL/m² with 1 cm water depth. Conversely, stills with 2 and 3 cm water depth, exhibit an increment of the daily exergy efficiency after 14:00 p.m., this increment was the most for the still with 3 cm water depth. Therefore, we have concluded that the still with 1 cm of water depth attained the highest water productivity, while the still with 3 cm of water depth attained the best exergy efficiency with no additional costs.

Uncontrolled Keywords: energy analysis, exergy efficiency, solar still, water depth, water productivity
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-223211
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institut für Energiesysteme und Energietechnik (EST)
Date Deposited: 14 Sep 2022 12:09
Last Modified: 15 Sep 2022 05:22
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