基于BACnet的空调冷源系统仿真实验台开发研究

发布时间：2018-06-02 13:42

本文选题：BACnet协议 + 空调冷源系统　；参考：《苏州科技大学》2017年硕士论文

【摘要】：中央空调系统的能耗占到了建筑总能耗的60%左右,在节能降耗的社会背景下,对空调系统进行节能研究具有很大意义。当前主要有软件模拟、微小系统模拟和项目实践等方法来研究空调系统整体的节能潜力,本文总结了这些方法的缺点,构建了一种模拟数据较精确且操作相对简单的空调冷源系统仿真实验台。本文从空调冷源系统中的冷水机组、冷冻水泵、冷却水泵和冷却塔这四大部分的结构和原理入手,建立了这四部分主要设备的能耗模型,另外也设计了该仿真实验台的手自动控制逻辑以及实验台中各模拟设备的启停顺序、故障模拟等控制逻辑。摒弃了现有的通过复杂程序代码来实现能耗模型输入实验台的方法,将VisualLogic图形化功能模块编程软件运用到实验台中,使实验台的控制程序编辑变得简便。此外,本实验台将Alerton楼宇自控系统与空调冷源系统仿真实验台结合到一起,使得实验台的运行数据可实时传输到自控系统中,自控系统也可实现对实验台的控制,从而形成一种新型的基于BACnet的空调冷源系统仿真实验台。最后以苏州市某制药厂的空调冷源系统工程为例,来验证该仿真实验台的可操作性及模拟数据的准确性。用系统实测数据及部分设备样本数据拟合出空调冷源系统能耗模型中的各未知参数,将能耗模型转化为实验台控制程序后,可形成针对该制药厂的空调冷源系统的仿真实验台。以冷水机组为例,将某段时间内冷水机组能耗的实测数据与实验台模拟出的数据进行对比,结果表明两者误差小于5.4%。采用该仿真实验台并结合BIN方法可模拟计算出供冷区域的空调冷源系统全年能耗。以该制药厂某车间为例,得出该车间的空调冷源系统的全年耗电量为194.6万kW/h。
[Abstract]:The energy consumption of central air conditioning system accounts for about 60% of the total building energy consumption. Under the background of energy saving and consumption reduction, it is of great significance to study the energy saving of air conditioning system. At present, there are several methods, such as software simulation, micro system simulation and project practice, to study the energy saving potential of air conditioning system as a whole. In this paper, the shortcomings of these methods are summarized. An air conditioning cold source system simulation bench with accurate simulation data and relatively simple operation is constructed. This paper starts with the structure and principle of four major parts of chiller, chilled water pump, cooling water pump and cooling tower in the cold source system of air conditioning, and establishes the energy consumption model of these four main equipments. In addition, the manual automatic control logic of the simulator, the starting and stopping sequence of the simulation equipment and the control logic of the fault simulation are also designed. The existing method of energy consumption model input into the test bench by complex program code is abandoned, and the VisualLogic graphical function module programming software is applied to the test bench, which makes the control program editing of the test bench easy. In addition, the Alerton building automatic control system is combined with the air conditioning cold source system simulation test bench, so that the operation data of the experimental platform can be transmitted to the automatic control system in real time, and the automatic control system can also realize the control of the experimental platform. Thus a new type of air conditioning cold source system simulation test bench based on BACnet is formed. Finally, taking the cold source system engineering of a pharmaceutical factory in Suzhou as an example, the maneuverability of the simulation bench and the accuracy of the simulation data are verified. The unknown parameters of the energy consumption model of air conditioning cold source system are fitted with the measured data of the system and the sample data of some equipments. After the energy consumption model is transformed into the control program of the experimental bench, the simulation test bench for the cold source system of the air conditioning system in the pharmaceutical factory can be formed. Taking the chillers as an example, the measured energy consumption data of the chillers in a certain period of time are compared with the simulated data of the test bench. The results show that the errors between the two are less than 5.4. The annual energy consumption of air conditioning cold source system in cooling area can be calculated by using the simulation bench and BIN method. Taking a workshop of the pharmaceutical factory as an example, it is concluded that the annual power consumption of the air-conditioning cold source system in the workshop is 1.946 million kW / h.
【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU831

【参考文献】