Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater

One of the key impediments to the wide utilization of solar water desalination systems is limited production. Hence, this study aims at increasing the thermal performance of a single-slope solar still by increasing the surface area of evaporation and absorption exposed to sunlight. A hollow rotating...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Naseer T. Alwan, Sergey E. Shcheklein, Obed Majeed Ali, Milia H. Majeed, Ephraim Bonah Agyekum
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	distillate water single-slope solar still solar water heater hollow cylinder water distillation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/2813de2428ac470f93db86f670f5caab
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2813de2428ac470f93db86f670f5caab
record_format	dspace
spelling	oai:doaj.org-article:2813de2428ac470f93db86f670f5caab2021-11-25T19:00:51ZExperimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater10.3390/su1322124142071-1050https://doaj.org/article/2813de2428ac470f93db86f670f5caab2021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12414https://doaj.org/toc/2071-1050One of the key impediments to the wide utilization of solar water desalination systems is limited production. Hence, this study aims at increasing the thermal performance of a single-slope solar still by increasing the surface area of evaporation and absorption exposed to sunlight. A hollow rotating cylinder was installed inside the still structure; this modified system was then joined with an outside solar water heater for productivity improvement. The obtained results show that a 0.5 rpm rotational speed ensured that the cylinder’s surface was kept wet. A mathematical model has been formulated using the finite difference method and the Fortran 90 programming language to assess the thermal performance productivity of two solar stills (conventional solar still (CSS) and modified solar still (MSS)) modelled under different conditions. The experimental and theoretical results are well agreed, with an error of 6.14%. The obtained results show that the maximum productivity recorded in July 2019 was about <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>11.1</mn><mo> </mo><mi mathvariant="normal">L</mi><mo>/</mo><msup><mi mathvariant="normal">m</mi><mn>2</mn></msup></mrow></semantics></math></inline-formula> from the MSS and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.8</mn><mo> </mo><mi mathvariant="normal">L</mi><mo>/</mo><msup><mi mathvariant="normal">m</mi><mn>2</mn></msup></mrow></semantics></math></inline-formula> from the CSS, with an improvement rate ranging between 286% and 300% during June, July, August, and September 2019. The production cost per liter of distilled water from the modified and conventional solar stills was <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.0302</mn><mo> </mo><mi>USD</mi><mo>/</mo><mi mathvariant="normal">L</mi></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.0312</mn><mo> </mo><mi>USD</mi><mo>/</mo><mi mathvariant="normal">L</mi></mrow></semantics></math></inline-formula>, respectively, which indicates a noticeable reduction in the cost of distillate water production.Naseer T. AlwanSergey E. ShchekleinObed Majeed AliMilia H. MajeedEphraim Bonah AgyekumMDPI AGarticledistillate watersingle-slope solar stillsolar water heaterhollow cylinderwater distillationEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12414, p 12414 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	distillate water single-slope solar still solar water heater hollow cylinder water distillation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	distillate water single-slope solar still solar water heater hollow cylinder water distillation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Naseer T. Alwan Sergey E. Shcheklein Obed Majeed Ali Milia H. Majeed Ephraim Bonah Agyekum Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater
description	One of the key impediments to the wide utilization of solar water desalination systems is limited production. Hence, this study aims at increasing the thermal performance of a single-slope solar still by increasing the surface area of evaporation and absorption exposed to sunlight. A hollow rotating cylinder was installed inside the still structure; this modified system was then joined with an outside solar water heater for productivity improvement. The obtained results show that a 0.5 rpm rotational speed ensured that the cylinder’s surface was kept wet. A mathematical model has been formulated using the finite difference method and the Fortran 90 programming language to assess the thermal performance productivity of two solar stills (conventional solar still (CSS) and modified solar still (MSS)) modelled under different conditions. The experimental and theoretical results are well agreed, with an error of 6.14%. The obtained results show that the maximum productivity recorded in July 2019 was about <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>11.1</mn><mo> </mo><mi mathvariant="normal">L</mi><mo>/</mo><msup><mi mathvariant="normal">m</mi><mn>2</mn></msup></mrow></semantics></math></inline-formula> from the MSS and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.8</mn><mo> </mo><mi mathvariant="normal">L</mi><mo>/</mo><msup><mi mathvariant="normal">m</mi><mn>2</mn></msup></mrow></semantics></math></inline-formula> from the CSS, with an improvement rate ranging between 286% and 300% during June, July, August, and September 2019. The production cost per liter of distilled water from the modified and conventional solar stills was <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.0302</mn><mo> </mo><mi>USD</mi><mo>/</mo><mi mathvariant="normal">L</mi></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.0312</mn><mo> </mo><mi>USD</mi><mo>/</mo><mi mathvariant="normal">L</mi></mrow></semantics></math></inline-formula>, respectively, which indicates a noticeable reduction in the cost of distillate water production.
format	article
author	Naseer T. Alwan Sergey E. Shcheklein Obed Majeed Ali Milia H. Majeed Ephraim Bonah Agyekum
author_facet	Naseer T. Alwan Sergey E. Shcheklein Obed Majeed Ali Milia H. Majeed Ephraim Bonah Agyekum
author_sort	Naseer T. Alwan
title	Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater
title_short	Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater
title_full	Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater
title_fullStr	Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater
title_full_unstemmed	Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater
title_sort	experimental and theoretical investigations of a modified single-slope solar still with an external solar water heater
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2813de2428ac470f93db86f670f5caab
work_keys_str_mv	AT naseertalwan experimentalandtheoreticalinvestigationsofamodifiedsingleslopesolarstillwithanexternalsolarwaterheater AT sergeyeshcheklein experimentalandtheoreticalinvestigationsofamodifiedsingleslopesolarstillwithanexternalsolarwaterheater AT obedmajeedali experimentalandtheoreticalinvestigationsofamodifiedsingleslopesolarstillwithanexternalsolarwaterheater AT miliahmajeed experimentalandtheoreticalinvestigationsofamodifiedsingleslopesolarstillwithanexternalsolarwaterheater AT ephraimbonahagyekum experimentalandtheoreticalinvestigationsofamodifiedsingleslopesolarstillwithanexternalsolarwaterheater
_version_	1718410392002101248

Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater

Ejemplares similares