Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium
Intercooler heat exchangers (IHE) are used to improve engine charge air temperature, which enhances engine efficiency and reduces emissions. The current study introduces a novel intercooler heat exchanger designed to improve combustion and engine performance by providing cold intake air. Lamella hea...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Alexandria Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016822006603 |
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| author | Usman Ikhtiar Abdul Aziz Bin Hairuddin Azizan Bin Asarry Khairil Anas Bin Md Rezali Hafiz Muhammad Ali |
| author_facet | Usman Ikhtiar Abdul Aziz Bin Hairuddin Azizan Bin Asarry Khairil Anas Bin Md Rezali Hafiz Muhammad Ali |
| author_sort | Usman Ikhtiar |
| collection | DOAJ |
| description | Intercooler heat exchangers (IHE) are used to improve engine charge air temperature, which enhances engine efficiency and reduces emissions. The current study introduces a novel intercooler heat exchanger designed to improve combustion and engine performance by providing cold intake air. Lamella heat exchanger is proposed, based on space availability in existing engines, operated as an evaporator utilizing a refrigeration unit, the same used for vehicle compartment cooling. A numerical investigation is carried out for a 1.496 L naturally aspirated engine at rpm 4000, 5000, and 6000. The intake air temperature is taken as 45 °C to examine the proposed four models: model A, model B, model C & model D bearing aspect ratios of 21.6 mm, 27 mm, 36 mm & 43.2 mm, respectively. The study aims to obtain high heat transfer with minimal pressure loss. For that, the evaluation criteria for all models are heat transfer, temperature drop, number of transfer units, logarithmic mean temperature difference, and pressure drop. As a result, all models under consideration are ranked from high to low; model D, model C, model B, and model A. The maximum heat transfer of 1.55 KW and the maximum temperature drop of 24.06 °C are observed for model D at rpm of 6000 and 4000, respectively. Likewise, the maximum pressure drop is recorded for model D at all rpm ranges; still, the pressure drop for model D is less than 28 % of the reference model used in this study at 6000 rpm. The simulated results indicate that all evaluation parameters except LMTD are directly proportional to the aspect ratio of the lamella. Due to their compactness, the proposed heat exchanger designs offer more surface area per unit volume, resulting in higher thermal capacity than the other conventional intercooler heat exchangers. |
| first_indexed | 2024-04-10T15:06:41Z |
| format | Article |
| id | doaj.art-aeb28eb7ec7c41efaa7f687752147eff |
| institution | Directory Open Access Journal |
| issn | 1110-0168 |
| language | English |
| last_indexed | 2024-04-10T15:06:41Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj.art-aeb28eb7ec7c41efaa7f687752147eff2023-02-15T04:27:03ZengElsevierAlexandria Engineering Journal1110-01682023-02-0165661673Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant mediumUsman Ikhtiar0Abdul Aziz Bin Hairuddin1Azizan Bin Asarry2Khairil Anas Bin Md Rezali3Hafiz Muhammad Ali4Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Corresponding author.Intercooler heat exchangers (IHE) are used to improve engine charge air temperature, which enhances engine efficiency and reduces emissions. The current study introduces a novel intercooler heat exchanger designed to improve combustion and engine performance by providing cold intake air. Lamella heat exchanger is proposed, based on space availability in existing engines, operated as an evaporator utilizing a refrigeration unit, the same used for vehicle compartment cooling. A numerical investigation is carried out for a 1.496 L naturally aspirated engine at rpm 4000, 5000, and 6000. The intake air temperature is taken as 45 °C to examine the proposed four models: model A, model B, model C & model D bearing aspect ratios of 21.6 mm, 27 mm, 36 mm & 43.2 mm, respectively. The study aims to obtain high heat transfer with minimal pressure loss. For that, the evaluation criteria for all models are heat transfer, temperature drop, number of transfer units, logarithmic mean temperature difference, and pressure drop. As a result, all models under consideration are ranked from high to low; model D, model C, model B, and model A. The maximum heat transfer of 1.55 KW and the maximum temperature drop of 24.06 °C are observed for model D at rpm of 6000 and 4000, respectively. Likewise, the maximum pressure drop is recorded for model D at all rpm ranges; still, the pressure drop for model D is less than 28 % of the reference model used in this study at 6000 rpm. The simulated results indicate that all evaluation parameters except LMTD are directly proportional to the aspect ratio of the lamella. Due to their compactness, the proposed heat exchanger designs offer more surface area per unit volume, resulting in higher thermal capacity than the other conventional intercooler heat exchangers.http://www.sciencedirect.com/science/article/pii/S1110016822006603Intercooler heat exchanger (IHE)Lamella heat exchanger (LHE)Charge air cooling (CAC)Internal combustion engines (ICE)Temperature dropPressure drop |
| spellingShingle | Usman Ikhtiar Abdul Aziz Bin Hairuddin Azizan Bin Asarry Khairil Anas Bin Md Rezali Hafiz Muhammad Ali Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium Alexandria Engineering Journal Intercooler heat exchanger (IHE) Lamella heat exchanger (LHE) Charge air cooling (CAC) Internal combustion engines (ICE) Temperature drop Pressure drop |
| title | Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium |
| title_full | Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium |
| title_fullStr | Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium |
| title_full_unstemmed | Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium |
| title_short | Numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium |
| title_sort | numerical investigation of lamella heat exchanger for engine intake charge air cooling utilizing refrigerant as coolant medium |
| topic | Intercooler heat exchanger (IHE) Lamella heat exchanger (LHE) Charge air cooling (CAC) Internal combustion engines (ICE) Temperature drop Pressure drop |
| url | http://www.sciencedirect.com/science/article/pii/S1110016822006603 |
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