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98818

Experimental Investigation on the Performance of Spherical Solar Collector for Water Heating.

Article

Last updated: 22 Jan 2023

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Subjects

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Tags

Mechanical Power Engineering

Abstract

Align with shortage of fossil fuel reserves, as well as the bad effects of using it on climate, more attention must be paid to renewable energy sources which including solar energy. Egypt is one of the Sunbelt countries. The solar Atlas, which was issued in 1991, shows that the average direct normal solar radiation energy in Egypt is 2000-3200 kWh/m2/year. The sun shine duration ranges between 9-11 h/day with a few cloudy days [1].
One of the effective methods which are used to improve the performance of solar thermal energy conversion applications such as solar collectors is the design of the collector geometry. In the present work, the performance of a solar collector for water heating with spherical geometry design is investigated experimentally. The effects of incident solar radiation variation, ambient temperature changes and variation of water mass flow rate on the water outlet temperature and the performance of the collector were studied. The experiments were done at four different mass flow rates and non-flow rate.
The results show that the average daily efficiency of the spherical solar collector with 1.1304 m2 surface area of absorber and 0.6 m diameter reaches its peak of 69%. The results also show that the collector efficiency factor was about 0.924 and the overall heat loss coefficient was 7.8 W/m2 °C.

DOI

10.21608/bfemu.2020.98818

Keywords

solar energy, Solar water heater, spherical solar collector and solar collector performance

Authors

First Name

Mahmoud

Last Name

Elhefnawy

MiddleName

Ahmed

Affiliation

a Damietta power plant, East Delta Electricity Production Co. – Egypt

Email

mahelhefnawy@yahoo.com

City

-

Orcid

-

First Name

Ahmed

Last Name

Ahmed

MiddleName

Ramzi Abbas

Affiliation

Lecturer at Mechanical Power Engineering Department, University of Mansoura, Egypt

Email

ahmed_ara1979@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Mahmoud

Last Name

Awad

MiddleName

Moustafa Ali

Affiliation

Prof. at Mechanical Power Engineering Department , Faculty of engineering, Mansoura University

Email

profawad@mans.edu.eg

City

-

Orcid

-

Volume

41

Article Issue

2

Related Issue

14978

Issue Date

2016-06-01

Receive Date

2016-04-28

Publish Date

2020-06-28

Page Start

27

Page End

37

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 41_Issue 2_Pages 27-37.pdf

PDF . 1.6MB

Link

https://bfemu.journals.ekb.eg/article_98818.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=98818

Order

12

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023