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Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.

Article

Last updated: 22 Jan 2023

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Tags

Mechanical Power Engineering

Abstract

Atheoretical evaluation of a hybrid desiccant air conditioning in post and pre·  cooling arrangements is studied and compared versus the traditional vapor  compression system {VCS- The performance of the rotary desiccant wheel Is  also studied as the heart of the hybrid desiccant cooling system. Lithium chloride IS applied as the working desiccant material In this investigation. A  mathematical model of coupled heal and mass transfer of the desiccant wheel  is presented and numerically solved. The model validity is check against other   work and results are in good agreement. Effect of rotary wheel speed ,  number of transfer units (NTU) and the desiccant surface area to volume on  the performance of the wheel are investigated. The effect of regeneration air  velocity and temperature, slot diameter, evaporator an d condenser  effectiveness and dehumidification effectiveness on the system performance  is also studied. The post cooling hybrid system is found 10 be an energy  efficient system, it saves up to 30% of cooling coil capacity compared to  traditional VCS. The COP of the post cooling arrangement, is nearly twice that  of VCS with reheat. The pre cooling arrangement supplies air at lower dew  point temperature (down to 6°C) with an increase of COP up 10 80%  compared to VCS with reheat. 

DOI

10.21608/bfemu.2020.127811

Keywords

hybrid desiccant system: vapor compression system: rotary desiccant wheel

Authors

First Name

A.

Last Name

Elzahaby

MiddleName

-

Affiliation

Mechanical Power Engineering Department., Faculty of Engineering., Tanta University., Tanta., Egypt

Email

-

City

Tanta

Orcid

-

First Name

M.

Last Name

Fouad

MiddleName

-

Affiliation

Mechanical Power Engineering Department., Faculty of Engineering., Cairo University., Cairo., Egypt

Email

-

City

Cairo

Orcid

-

First Name

A.

Last Name

Kabeel

MiddleName

E.

Affiliation

Mechanical Power Engineering Department., Faculty of Engineering., Tanta University., Tanta., Egypt

Email

kabeel6@yahoo.com

City

Tanta

Orcid

-

First Name

A.

Last Name

Khalil

MiddleName

-

Affiliation

Mechanical Power Engineering Department., Faculty of Engineering., Tanta University., Tanta.,Egypt

Email

-

City

Tanta

Orcid

-

First Name

M.

Last Name

Bassuoni

MiddleName

M.

Affiliation

Mechanical Power Engineering Department., Faculty of Enginering., Tanta University., Tanta., Egypt

Email

-

City

Tanta

Orcid

-

Volume

33

Article Issue

4

Related Issue

18959

Issue Date

2008-12-01

Receive Date

2008-07-11

Publish Date

2020-12-06

Page Start

25

Page End

43

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 33_Issue 4_Pages 25-43.pdf

PDF . 2.8MB

Link

https://bfemu.journals.ekb.eg/article_127811.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=127811

Order

4

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