Prediction in off-design operation for the helical heat recovery exchanger
Helical heat exchangers are commonly used to exchange the thermal energy in waste heat recovery systems. Ammonia rectifier in absorption chiller and heat recovery steam generator are examples typically found in open literature. They are widely employed because of its compactness, high heat exchange...
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| Format: | Article |
| Language: | English |
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CAN THO UNIVERSITY PUBLISHING HOUSE
2016-07-01
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| Series: | Can Tho University Journal of Science |
| Subjects: | |
| Online Access: | https://ctujs.ctu.edu.vn/index.php/ctujs/article/view/149 |
| _version_ | 1798039676160835584 |
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| author | Minh Phu Nguyen Trong Tran Huy Hoang The Truyen Le Tien Tho Trinh |
| author_facet | Minh Phu Nguyen Trong Tran Huy Hoang The Truyen Le Tien Tho Trinh |
| author_sort | Minh Phu Nguyen |
| collection | DOAJ |
| description | Helical heat exchangers are commonly used to exchange the thermal energy in waste heat recovery systems. Ammonia rectifier in absorption chiller and heat recovery steam generator are examples typically found in open literature. They are widely employed because of its compactness, high heat exchange rate, compensation of thermal expansion, vibration resistance, simple construction, and low capital cost. Heat exchanger researches have almost focused on straight tubes. However, study on helical heat exchanger has not been paid attention. In this study, a simplified model is developed to predict single phase heat transfer and pressure loss in the helical heat exchanger under various operating conditions without geometrical information inside the exchanger required. Methods of LMTD and e-NTU, and selective empirical correlations are presented in the model. Simulation results were achieved good agreement with the experimental data with a moderate tolerance. The model would be expected as a good tool for designers to the pre-design and correct selection of helical heat exchanger in thermal network. |
| first_indexed | 2024-04-11T21:57:07Z |
| format | Article |
| id | doaj.art-d63bba60dcc84e2cbd9fd70ad8dde312 |
| institution | Directory Open Access Journal |
| issn | 2615-9422 2815-5602 |
| language | English |
| last_indexed | 2024-04-11T21:57:07Z |
| publishDate | 2016-07-01 |
| publisher | CAN THO UNIVERSITY PUBLISHING HOUSE |
| record_format | Article |
| series | Can Tho University Journal of Science |
| spelling | doaj.art-d63bba60dcc84e2cbd9fd70ad8dde3122022-12-22T04:01:04ZengCAN THO UNIVERSITY PUBLISHING HOUSECan Tho University Journal of Science2615-94222815-56022016-07-0110.22144/ctu.jsi.2016.007Prediction in off-design operation for the helical heat recovery exchangerMinh Phu Nguyen0Trong Tran Huy Hoang1The Truyen Le2Tien Tho Trinh3Faculty of Mechanical engineering, Ho Chi Minh City University of Food Industry, VietnamFaculty of Mechanical engineering, Ho Chi Minh City University of Food Industry, VietnamFaculty of Mechanical engineering, Ho Chi Minh City University of Food Industry, VietnamFaculty of Mechanical engineering, Ho Chi Minh City University of Food Industry, VietnamHelical heat exchangers are commonly used to exchange the thermal energy in waste heat recovery systems. Ammonia rectifier in absorption chiller and heat recovery steam generator are examples typically found in open literature. They are widely employed because of its compactness, high heat exchange rate, compensation of thermal expansion, vibration resistance, simple construction, and low capital cost. Heat exchanger researches have almost focused on straight tubes. However, study on helical heat exchanger has not been paid attention. In this study, a simplified model is developed to predict single phase heat transfer and pressure loss in the helical heat exchanger under various operating conditions without geometrical information inside the exchanger required. Methods of LMTD and e-NTU, and selective empirical correlations are presented in the model. Simulation results were achieved good agreement with the experimental data with a moderate tolerance. The model would be expected as a good tool for designers to the pre-design and correct selection of helical heat exchanger in thermal network.https://ctujs.ctu.edu.vn/index.php/ctujs/article/view/149Helical heat exchangerModellingExperimental validation |
| spellingShingle | Minh Phu Nguyen Trong Tran Huy Hoang The Truyen Le Tien Tho Trinh Prediction in off-design operation for the helical heat recovery exchanger Can Tho University Journal of Science Helical heat exchanger Modelling Experimental validation |
| title | Prediction in off-design operation for the helical heat recovery exchanger |
| title_full | Prediction in off-design operation for the helical heat recovery exchanger |
| title_fullStr | Prediction in off-design operation for the helical heat recovery exchanger |
| title_full_unstemmed | Prediction in off-design operation for the helical heat recovery exchanger |
| title_short | Prediction in off-design operation for the helical heat recovery exchanger |
| title_sort | prediction in off design operation for the helical heat recovery exchanger |
| topic | Helical heat exchanger Modelling Experimental validation |
| url | https://ctujs.ctu.edu.vn/index.php/ctujs/article/view/149 |
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