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

1.静态实验：根据与设定流量成比例的负载，控制用于流量的集管压差控制实验（以下“B模式”）和末端压差控制实验（以下“E模式”）。该测量方法能够对实验系统的各个部分进行能耗测量.通过将根据负载系数的操作时间乘以数据，可以计算各个部分中的热传输能量。阐明了E模式和B模式的工作特性。E模式的热输运能量比B模式减少近50%。2.模拟实验：静态试验中小负荷（12月~ 3月）流量控制精度较好，但模拟试验中超过设定流量。因为它在控制值的控制范围之内。因此，有必要对偏载张紧精度进行考核。3.控制系统和信息系统：通过安装专用以太网，末端压差控制信号的通信完全没有问题，并发挥作用。该系统适用于实际设备。4.未来问题：（1）进一步节能系统的开发：通过本实验可以清楚地看出，流量控制阀的能量消耗成为系统的最大值，并且其在小流量下的控制精度降低。最后对端差压的可变控制进行了估计，解决了这一问题.（2）控制通信系统的协议：通信协议为UDP，并研究了在以太网上附加信息优先级的方法。

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.