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111571

Investigation of Paraffin Wax with ZnO Nanorods for Performance Enhancement of Solar Thermal Energy Storage.

Article

Last updated: 04 Jan 2025

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Subjects

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Tags

Mechanical Power Engineering

Abstract

This paper discusses the influence of paraffin wax inoculated with ZnO-nanorods on the latent heat of thermal energy storage (LHTES) of solar water heating system. The main objective of the experimental study is to determine the percentage increase in thermal storage capacity of using paraffin wax with 0.15 wt.% ZnO-nanorods as nano-composite phase change material (NCPCM) to the raw paraffin wax as base phase change material (PCM). The experiments were performed by 33-liter insulated stainless-steel storage shell TES tank containing 21 copper tubes 5/8-inch in diameter. The TES tank is filled with circulating water and the tubes are filled with either the pure PCM or NCPCM. The water is the heat transfer fluid (HTF) in the TES tank. The experiments were done at different HTF flow rates to study the best flow rate that increases both the amount of heat transfer and melting rate of PCM. It was found that 0.15 wt.% ZnO NCPCM decreases the charging and discharging time compared to the pure PCM, and a percentage increase is achieved in thermal energy storage by 20% when using 0.15 wt.% ZnO nanorods. The results also reveal that the maximum discharge energy was raised from 266 kW for pure paraffin wax to 306 kJ for 0.15 wt.% ZnO NCPCM. The NCPCM at 6 l/min HTF flow rate provides the highest energy recovery ratio (ERR), while the smallest occurs at 9 l/min.

DOI

10.21608/bfemu.2020.111571

Keywords

Thermal energy storage (TES), Solar heating system, Nanocomposite PCM

Authors

First Name

Mohamed

Last Name

Sokar

MiddleName

Saber

Affiliation

Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.

Email

mohamed.sokar@feng.bu.edu.eg

City

Cairo

Orcid

0000-0002-3916-7698

First Name

Shehab

Last Name

Mansour

MiddleName

Ahmed

Affiliation

Basic Engineering Science Department, Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt

Email

shehab_mansour@yahoo.com

City

Shebin El-Kom

Orcid

-

First Name

Ali

Last Name

Ali

MiddleName

Abdel Aziz

Affiliation

Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt

Email

ali.ali@feng.bu.edu.eg

City

Cairo

Orcid

-

First Name

Malek

Last Name

Elnekiety

MiddleName

Hegazy

Affiliation

Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt

Email

mk_genx@yahoo.com

City

BELBIES

Orcid

-

Volume

45

Article Issue

3

Related Issue

15732

Issue Date

2020-09-01

Receive Date

2020-06-16

Publish Date

2020-09-09

Page Start

19

Page End

28

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 45_Issue 3_Pages 19-28.pdf

PDF . 871.9kB

Link

https://bfemu.journals.ekb.eg/article_111571.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=111571

Order

15

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Investigation of Paraffin Wax with ZnO Nanorods for Performance Enhancement of Solar Thermal Energy Storage.

Details

Type

Article

Created At

22 Jan 2023