Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System

Joint Authors

Machunda, Revocatus
Muhunzi, Amour Othman
Jande, Yusufu Abeid Chande

Source

Journal of Energy

Issue

Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2020-11-16

Country of Publication

Egypt

No. of Pages

11

Main Subjects

Mechanical Engineering

Abstract EN

A numerical study for heat exchanger for spray-assisted low-temperature desalination system is presented for an existing low-temperature desalination unit at Arusha Technical College.

This is aimed at recognizing the effect of mass flow and physical parameters like tube layout (diameter and length) on the overall heat transferred and the pressure drop in the shell-and-tube heat exchanger (STHX), as well as the impact of these parameters on the heat transfer coefficient and the overdesign of the STHX.

Also, the study provides a suitable mathematical model for the replacement of the current condensation unit which tends to reduce energy consumption by reducing some of the electrical components in the system.

A Math CAD model was developed using the Delaware method to obtain the mentioned parameters.

The results show that at 0.8 kg/s flow rate a maximum heat transfer coefficient of 23212 W/m2K is achieved in a minimum diameter of 10 mm within a maximum tube length of 1000 mm heat exchanger and the pressure drop seems to be very low in a range of 0.328-0.957 Pa from all configurations.

The configuration with 1000 mm tube length and 10 mm diameter performed well on the mass flow of 0.3 kg/s-0.8 kg/s by providing a suitable overall heat transfer coefficient of 2306-2539 W/m2K, while 12.8 is a maximum overdesign coefficient achieved on 0.8 kg/s mass flow.

The study results show the possibility of using STHX instead of the current condensation unit in implementing a proposed system layout with the minimum effect of energy consumption.

American Psychological Association (APA)

Muhunzi, Amour Othman& Jande, Yusufu Abeid Chande& Machunda, Revocatus. 2020. Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System. Journal of Energy،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1184121

Modern Language Association (MLA)

Muhunzi, Amour Othman…[et al.]. Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System. Journal of Energy No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1184121

American Medical Association (AMA)

Muhunzi, Amour Othman& Jande, Yusufu Abeid Chande& Machunda, Revocatus. Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System. Journal of Energy. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1184121

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1184121