Modeling and validation of an active chilled beam terminal unit
In this paper, a simplified hybrid model is proposed for an active chilled beam (ACB) terminal unit. Based on the conservation equations of mass and energy, the model demonstrates the air entrainment characteristics in the air chamber and the heat transfer process in cooling coil. Compared with the...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/151587 |
| _version_ | 1826116380942925824 |
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| author | Ji, Ke Cai, Wenjian Zhang, Xin Wu, Bingjie Ou, Xianhua |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Ji, Ke Cai, Wenjian Zhang, Xin Wu, Bingjie Ou, Xianhua |
| author_sort | Ji, Ke |
| collection | NTU |
| description | In this paper, a simplified hybrid model is proposed for an active chilled beam (ACB) terminal unit. Based on the conservation equations of mass and energy, the model demonstrates the air entrainment characteristics in the air chamber and the heat transfer process in cooling coil. Compared with the existing ACB model, the proposed model not only can capture the effects of the air buoyancy but also can reduce the complexity of the cooling coil model. This model requires only two equations with nine unknown coefficients that can be identified by the Levenberg-Marquardt method. Experimental validation in the thermal room proves that the proposed model is effective to predict the flow rate of supply air and heat transfer process in a wide range of operating conditions. Moreover, the proposed model can be further examined in optimization and performance evaluation applications for the ACB system. |
| first_indexed | 2024-10-01T04:10:26Z |
| format | Journal Article |
| id | ntu-10356/151587 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:10:26Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1515872021-06-28T06:41:14Z Modeling and validation of an active chilled beam terminal unit Ji, Ke Cai, Wenjian Zhang, Xin Wu, Bingjie Ou, Xianhua School of Electrical and Electronic Engineering Centre for system intelligence and efficiency (EXQUISITUS) Centre for E-City Engineering::Electrical and electronic engineering Active Chilled Beam Hybrid Model In this paper, a simplified hybrid model is proposed for an active chilled beam (ACB) terminal unit. Based on the conservation equations of mass and energy, the model demonstrates the air entrainment characteristics in the air chamber and the heat transfer process in cooling coil. Compared with the existing ACB model, the proposed model not only can capture the effects of the air buoyancy but also can reduce the complexity of the cooling coil model. This model requires only two equations with nine unknown coefficients that can be identified by the Levenberg-Marquardt method. Experimental validation in the thermal room proves that the proposed model is effective to predict the flow rate of supply air and heat transfer process in a wide range of operating conditions. Moreover, the proposed model can be further examined in optimization and performance evaluation applications for the ACB system. National Research Foundation (NRF) The work is supported by the research project New Generation ACMV Systems – Total Energy Efficiency Solutions. The project is funded by National Research Foundation of Singapore, Singapore (NRF2011 NRF-CRP001-090) 2021-06-28T06:41:14Z 2021-06-28T06:41:14Z 2019 Journal Article Ji, K., Cai, W., Zhang, X., Wu, B. & Ou, X. (2019). Modeling and validation of an active chilled beam terminal unit. Journal of Building Engineering, 22, 161-170. https://dx.doi.org/10.1016/j.jobe.2018.12.009 2352-7102 https://hdl.handle.net/10356/151587 10.1016/j.jobe.2018.12.009 2-s2.0-85058686375 22 161 170 en NRF2011 NRF-CRP001-090 Journal of Building Engineering © 2018 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Active Chilled Beam Hybrid Model Ji, Ke Cai, Wenjian Zhang, Xin Wu, Bingjie Ou, Xianhua Modeling and validation of an active chilled beam terminal unit |
| title | Modeling and validation of an active chilled beam terminal unit |
| title_full | Modeling and validation of an active chilled beam terminal unit |
| title_fullStr | Modeling and validation of an active chilled beam terminal unit |
| title_full_unstemmed | Modeling and validation of an active chilled beam terminal unit |
| title_short | Modeling and validation of an active chilled beam terminal unit |
| title_sort | modeling and validation of an active chilled beam terminal unit |
| topic | Engineering::Electrical and electronic engineering Active Chilled Beam Hybrid Model |
| url | https://hdl.handle.net/10356/151587 |
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