An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning
Chilled water system of central air conditioning is a typical hybrid system; variable frequency behavior with amplitude limited of pumps reflects continuous and discrete dynamic characteristics. The way of energy-saving is variable water volume, via variable frequency behavior of pumps to gain adjus...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Control Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/3750859 |
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| author | Yan Zhang Xiaoli Chu Yongqiang Liu |
| author_facet | Yan Zhang Xiaoli Chu Yongqiang Liu |
| author_sort | Yan Zhang |
| collection | DOAJ |
| description | Chilled water system of central air conditioning is a typical hybrid system; variable frequency behavior with amplitude limited of pumps reflects continuous and discrete dynamic characteristics. The way of energy-saving is variable water volume, via variable frequency behavior of pumps to gain adjustment of power consumption. Facing the situation of the variable frequency pumps with parallel operation, single continuous or discrete modeling cannot reflect the hybrid features. Thus, the control method will have some questions, such as bad energy-saving effect, difficult accurate adjustment of cold capacity, and low running energy efficiency. However, hybrid system modeling can reflect hybrid dynamic behavior of pumps, which is combining continuous and discrete features. The questions of nonlinear and multiparameters can be solved by control method based on hybrid system. Here, an optimum control method is proposed with the principle of the minimum, by setting the minimum power consumption as the performance function in fixed time, which realizes variable control of pumps and accurate adjustment of temperature inside room. At last, it shows the system characteristics and energy-saving affection by hybrid system modeling and the optimum control method. |
| format | Article |
| id | doaj-art-2b6dc4df488141cd85b213cd51ae3b82 |
| institution | Kabale University |
| issn | 1687-5249 1687-5257 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Control Science and Engineering |
| spelling | doaj-art-2b6dc4df488141cd85b213cd51ae3b822025-08-20T03:54:43ZengWileyJournal of Control Science and Engineering1687-52491687-52572018-01-01201810.1155/2018/37508593750859An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air ConditioningYan Zhang0Xiaoli Chu1Yongqiang Liu2Faculty Development and Educational Technology Center, Guangdong University of Finance and Economics, Guangzhou 510320, ChinaCenter of Network, Guangdong AIB Polytechnic College 510507, ChinaSchool of Electric Power, South China University of Technology, Guangzhou 510640, ChinaChilled water system of central air conditioning is a typical hybrid system; variable frequency behavior with amplitude limited of pumps reflects continuous and discrete dynamic characteristics. The way of energy-saving is variable water volume, via variable frequency behavior of pumps to gain adjustment of power consumption. Facing the situation of the variable frequency pumps with parallel operation, single continuous or discrete modeling cannot reflect the hybrid features. Thus, the control method will have some questions, such as bad energy-saving effect, difficult accurate adjustment of cold capacity, and low running energy efficiency. However, hybrid system modeling can reflect hybrid dynamic behavior of pumps, which is combining continuous and discrete features. The questions of nonlinear and multiparameters can be solved by control method based on hybrid system. Here, an optimum control method is proposed with the principle of the minimum, by setting the minimum power consumption as the performance function in fixed time, which realizes variable control of pumps and accurate adjustment of temperature inside room. At last, it shows the system characteristics and energy-saving affection by hybrid system modeling and the optimum control method.http://dx.doi.org/10.1155/2018/3750859 |
| spellingShingle | Yan Zhang Xiaoli Chu Yongqiang Liu An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning Journal of Control Science and Engineering |
| title | An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning |
| title_full | An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning |
| title_fullStr | An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning |
| title_full_unstemmed | An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning |
| title_short | An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning |
| title_sort | optimal hybrid control method for energy saving of chilled water system in central air conditioning |
| url | http://dx.doi.org/10.1155/2018/3750859 |
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