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126751

A New Program to Design an Alpha-Type Stirling Engine Using Elbow-Bend Transposed-Fluids Heat Exchangers.

Article

Last updated: 04 Jan 2025

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Tags

Mechanical Power Engineering

Abstract

In this work, the elbow bend heat exchangers were suggested to be used as a heater and a cooler in an alpha type Stirling engine. Elbow bend heat exchanger is a bank of tubes arranged in a quadrant either in line or staggered with different normal and parallel pitches. Eight of the suggested heat exchangers of different dimensions were tested experimentally for steady flow (in a previous research by the same authors). The experimental results were correlated for heat transfer and pressure drop. In the present research, two parallel pistons on a common crankshaft alpha Stirling engine were designed to use elbow bend heat exchangers as a heater and a cooler. The heating fluid flows inside the tubes of the heater, the coolant flows inside the cooler tubes, while the gas circuit fluid (working fluid) flows past the tubes in both of them. A computer program was prepared to analyze the working fluid cycle in the vision of Schmidt theory and it was solved numerically by the program. After that the effect of heat transfer and pressure drop were taken into consideration. Upon calculations, the most suitable values of each of the stroke/bore ratio, the crank phase angle between the hot and cold pistons and the speed range were found out for nitrogen as a working fluid. In a comparison between the proposed engine and practical ones by the literature, it was found that the proposed engine delivers higher power per unit swept volume per unit temperature difference between the heat source and sink in addition to higher values of the efficiency. 

DOI

10.21608/bfemu.2020.126751

Keywords

Stirling engines, Elbow bend heat exchangers, Alpha Stirling engine

Authors

First Name

A.

Last Name

El-Ehwany

MiddleName

A.

Affiliation

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

Email

-

City

Cairo

Orcid

-

First Name

G.

Last Name

Hennes

MiddleName

M.

Affiliation

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

Email

-

City

Cairo

Orcid

-

First Name

E.

Last Name

Eid

MiddleName

I.

Affiliation

Mechanical Power Engineering Department., Faculty of Industrial Education., Suez Canal University., Suez., Egypt.

Email

-

City

Suez

Orcid

-

First Name

E.

Last Name

El-Kenany

MiddleName

-

Affiliation

Workers University., Tech. Development Dept., Tanta., Egypt.

Email

-

City

Tanta

Orcid

-

Volume

34

Article Issue

4

Related Issue

18585

Issue Date

2009-12-01

Receive Date

2009-10-11

Publish Date

2020-12-01

Page Start

60

Page End

72

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 34_Issue 4_Pages 60-72.pdf

PDF . 1.1MB

Link

https://bfemu.journals.ekb.eg/article_126751.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=126751

Order

13

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

A New Program to Design an Alpha-Type Stirling Engine Using Elbow-Bend Transposed-Fluids Heat Exchangers.

Details

Type

Article

Created At

22 Jan 2023