Model-based optimal control of outdoor air flow rate of an air-conditioning system with primary air-handling unit.
发布时间：2023-04-22
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- 论文类型：
- 文章
- 第一作者：
- 孙忠伟
- 通讯作者：
- 王盛卫
- 合写作者：
- 朱娜
- 发表刊物：
- Indoor and Built Environment
- 收录刊物：
- SCI
- 所属单位：
- 香港理工大学
- 刊物所在地：
- United Kingdom
- 学科门类：
- 工学
- 一级学科：
- 土木工程
- 项目来源：
- Hong Kong Research Grants Council
- 文献类型：
- J
- 卷号：
- 20
- 页面范围：
- 626-637
- ISSN号：
- 1420-326X
- 关键字：
- Primary air-handling unit; VAV air conditioning; Ventilation control; Model-based control; Incremental adaptive model; Optimal control
- DOI码：
- 10.1177/1420326X11411511
- 发表时间：
- 2011-12-28
- 影响因子：
- 3.067
- 摘要：
- This paper presents a model-based outdoor air flow rate optimal control strategy for multi-zone variable air volume air-conditioning systems with the primary air-handling units. An adaptive optimisation algorithm is adopted for optimising the set point of the outdoor air flow rate to minimise the energy cost, which could compromise the energy consumption of the primary fan and the cooling energy saving by the cold outdoor air. The primary fan energy consumption can be predicted using a simplified incremental fan model and the main parameters of this model are identified online. The cooling energy saving by the outdoor air is estimated online using the enthalpies of the air streams. The lower limit of the outdoor air flow rate is determined by a CO2-based adaptive demand-controlled ventilation strategy using the dynamic multi-space equation to maintain the satisfied indoor air quality (IAQ). Tests were conducted to evaluate the performance of the control strategy applied to a practical building system in simulation environment. The results show that the proposed optimal control strategy can reduce energy consumption significantly, while maintaining a satisfactory IAQ.