MARC details
| 000 -LEADER |
|---|
| fixed length control field |
04912ntm a2200337 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20260101150917.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
|---|
| fixed length control field |
t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
|---|
| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
260101t20252025my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
|---|
| International Standard Book Number |
THE0010208 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMPSA |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKMA .S27 2025 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Sashwin Nair A/l Gobinathan, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Experimental and numerical investigation of tube angle, fin shape and winglet effects on compact heat exchanger with parametric optimization / |
| Statement of responsibility, etc. |
Sashwin Nair A/l Gobinathan |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2025 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2025 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xvi, 115pages : |
| Other physical details |
illustrations (some color) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
|---|
| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
|---|
| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
|---|
| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
|---|
| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Faculty of Mechanical and Automotive Engineering Technology |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (Master of Science) -- Universiti Malaysia Pahang – 2025 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
|---|
| Summary, etc. |
Compact heat exchangers (CHE) are among the most often used heat exchanger (HE) in the industry due to its better advantage over other types of heat exchangers. Numerous geometric (fin spacing, tube inclination angle, etc.) and process (airflow velocity, liquid temperature, etc.) characteristics affect the way these small HEs work. Most of the research focused more on the plain fin with the addition of winglets whereas for wavy fin and rectangular fin are not fully examined. Furthermore, effect of tube inclination angle on plain, wavy and rectangular fins with addition of winglets are not examined yet. Even though the experimental and numerical show a very small difference in their results, there are limitations in the experimental study. The flow through the CHE is not observable with our naked eyes. The research work on the geometric parameters have been done separately. A combination of both types of research works are something new and needs to be done in comparison with flat fin for heat transfer enhancement. The main objective of this study is to investigate the heat transfer performance of flat tube CHE at various tube inclination angles and fin shapes with the addition of winglet. The second objective is to determine the optimum geometric and process parameters for enhanced heat transfer. Aluminium fins were fabricated for the study based on the fin type parameter which are plain, wavy and rectangular. Wavy angle and height were fixed at 162.1° and 1.5mm respectively for enhanced heat transfer. To achieve the objective of this research, 6 different tube inclination angles (0°, 30°, 60°, 90°, 120° and 150°) were investigated using plain, wavy and rectangular fin type. The experiment was conducted in an open wind tunnel and the working fluid used was air to investigate the thermal performance of the fin-and-tube HE. The wind tunnel consists of an inlet section, flow straightener, test section, and devices to measure airflow velocity, the temperature of air and pressure difference, temperature controller, suction fan and frequency inverter. By applying Ansys FLUENT software, a three-dimensional (3D) numerical technique was used to calculate the laminar flow condition for both inline and staggered tube arrangements. In addition, a simulation of a flow visualisation based on winglet computational domain with and without was conducted. Based on the results, the tube configurations with the highest average heat transfer coefficient (120°) and the lowest average pressure drop penalty (30°) were found to be in the same location. In addition, it has been shown that staggered tube arrangements transfer heat more efficiently than inline arrangements. In addition, because of their larger heat transfer surface area, fins with winglets conduct heat more efficiently than fins without them. As a result, an inclination angle of 120° is advised when huge heat transfer is required, and 30° or 150° is advised if pumping power is the main issue. In order to improve the heat transfer, addition of winglet with 120° tube inclination and rectangular fin would be an ideal choice. The optimisation result shows that the heat transfer coefficient increases with the increase in air velocity, fin spacing, and tube inclination angle. In addition, when the air velocity and tube inclination angle decrease, the pressure loss is at its lowest. Apart from that, the high friction drag generated by the tube surfaces contributes to an increase in this pressure drop. Furthermore, it is evident that the fin spacing has little to no impact on the pressure drop. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
|---|
| Corporate name or jurisdiction name as entry element |
Faculty of Mechanical and Automotive Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Theses |
| General subdivision |
Dissertations |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Thesis |