Development of Energy Saved Heat Transport System by Urban and Building Control and Automation Network System

城市及楼宇控制与自动化网络系统节能热传输系统的开发

• 批准号: 12650602
• 负责人: SAITOH Tadayoshi
• 金额: $ 2.05万
• 依托单位: KOKUSHIKAN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650602/
• 关键词: Annual load duration curve; Operation time by heat load rate; Variable pump control; End differencial pressure control; BACnet; Header differencial pressure control; ポンプ台数制御; 差圧制御; イーサネット; 末端差圧一定制御

1. The static experiment : Header differential pressure control experiment (of the following "B-mode") and end differential pressure control experiment (of the following "E mode") for flow rate were controlled according to the load in proportion to setting flow rate. The measurement was able to execute energy consumption of each every part place of experimental system. By multiplying the operating times according to load factor by the data, it became that heat transport energy amount could be calculated in the individual part. The operating characteristic of E mode and B mode were clarified. Heat transport energy amount of the E mode reduced almost 50% of B-mode. 2. The simulation experiment : The flow control in the small load (December - March) in static experiment was sufficiently controlled at the good accuracy, but it has exceeded setting flow rate in simulation experiment. Because it consists under the control range of control value. So it is necessary to examine the partial load tense accuracy. 3. Control system and information system : The communication of end differential pressure control signal by installing exclusive Ethernet was no problem at all and functioned. This system is applicable for actual facility. 4.furture problem : (1)The development of further energy saving-system : It becomes clear that by present experiment, energy-consumption by the flow control valve becomes a maximum of the system, and its control accuracy in the small flow rate lowers. Then the end differential pressure variable control is estimated with that this problem can be solved. (2)The protocol of the control communication system : The communication protocol is UDP, and the method for attaching to the priority of information on Ethernet is examined.

1. 静态实验：流量的头压差控制实验（以下“b模式”）和端压差控制实验（以下“E模式”）按负荷与设定流量成比例进行控制。对实验系统各部位的能耗进行了测量。根据负荷系数的运行次数乘以数据，就可以计算出单个部件的热传递能量。阐明了E模式和B模式的工作特性。E模的热传递能量比b模减少了近50%。2. 仿真实验：静态实验中小负荷（12 - 3月）的流量控制得到充分控制，精度较好，但仿真实验中流量超过设定流量。因为它包含在控制值的控制范围内。因此，有必要对其局部载荷张力精度进行检验。3. 控制系统和信息系统：安装专用以太网，端差压控制信号通信完全没有问题，并能正常工作。本系统适用于实际设备。4.未来的问题：(1)进一步节能系统的发展：从目前的实验可以看出，流量控制阀的能耗成为系统的最大值，并且在小流量时控制精度降低。然后对末端压差变量控制进行了估计，从而解决了这一问题。(2)控制通信系统的协议：通信协议为UDP，研究了以太网上信息优先级的附加方法。