Scholarlink

<p>Energy efficiency and environmental protection of central air conditioning is the core issue of current research. According to statistics, community buildings' energy consumption accounts for 40–60% of their total energy consumption, making it the main component of building energy consumption. In order to improve operational performance of central air conditioning and reduce energy consumption, the study recommends a linked control strategy for central air-conditioning pumps and a tank height difference optimization model. The coupled control method of constant dry pipe differential pressure control and constant end differential pressure control is combined with the tank height difference optimization model to achieve intelligent control of chilled water systems. The optimized solution for effectively operating and maintaining the air conditioning system employs the control logic of the chiller plant add-on and the inverter control logic of the cooling tower fans to enhance system performance and reduce energy consumption during operation. According to the experimental results, the coupled differential pressure safety range for two tanks with a 2.1&#xa0;m height difference was between 10.6 and 12.7&#xa0;MPa, which corresponded to a flow ratio of 0.2–0.27 and an 81% time share. The power of the pump's fixed-end differential pressure control was between 1.3 and 4.5&#xa0;kW, which resulted in energy savings of approximately 85–95%. The effective O&amp;M control optimization of the air conditioning system increased the operational efficiency of the WCC-01, WCC-03, and WCC-04 units by about 30%, 10%, and 50%, respectively. The study's findings show that this approach can successfully reduce energy consumption from air conditioning use while enhancing the control effect of the air conditioning system pump, providing technological support for energy- and emission-efficient air conditioning.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Pump coupling control strategy and tank height difference optimization model for central air conditioning

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月2日

查看全文
  • Yujie Wang

摘要

Energy efficiency and environmental protection of central air conditioning is the core issue of current research. According to statistics, community buildings' energy consumption accounts for 40–60% of their total energy consumption, making it the main component of building energy consumption. In order to improve operational performance of central air conditioning and reduce energy consumption, the study recommends a linked control strategy for central air-conditioning pumps and a tank height difference optimization model. The coupled control method of constant dry pipe differential pressure control and constant end differential pressure control is combined with the tank height difference optimization model to achieve intelligent control of chilled water systems. The optimized solution for effectively operating and maintaining the air conditioning system employs the control logic of the chiller plant add-on and the inverter control logic of the cooling tower fans to enhance system performance and reduce energy consumption during operation. According to the experimental results, the coupled differential pressure safety range for two tanks with a 2.1 m height difference was between 10.6 and 12.7 MPa, which corresponded to a flow ratio of 0.2–0.27 and an 81% time share. The power of the pump's fixed-end differential pressure control was between 1.3 and 4.5 kW, which resulted in energy savings of approximately 85–95%. The effective O&M control optimization of the air conditioning system increased the operational efficiency of the WCC-01, WCC-03, and WCC-04 units by about 30%, 10%, and 50%, respectively. The study's findings show that this approach can successfully reduce energy consumption from air conditioning use while enhancing the control effect of the air conditioning system pump, providing technological support for energy- and emission-efficient air conditioning.