基于PLC的厂房暖通空调机组控制系统开发与研制

发布时间：2018-01-26 17:18

本文关键词： 能耗空调机组节能 PLC控制　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：现如今随着建筑行业的蓬勃发展,人类居住环境日益变好,但与此同时建筑行业的能源消耗量不断增加。根据相关统计数据,在整个建筑行业中能源消耗最多的是来自采暖系统中的空调机组,约占整个建筑能源消耗的九成以上,占全社会能源消耗总量的两成以上。如此巨大的能源消耗,不仅加速了能源危机,而且导致了资源浪费和环境污染,因此降低建筑行业的能源消耗,尤其是暖通空调机组的能源消耗量是十分必要的。本文以厂房暖通系统中的空调机组为研究对象,通过分析造成空调机组能源消耗量大的可能因素,得出空调机组控制系统自动化水平低导致空调机组能源利用率低、能源消耗量大的结论,因此提出了基于PLC的厂房空调机组控制系统研究与开发的课题。本文详细介绍了厂房暖通系统的工艺控制流程,阐述了空调机组每个工艺环节上的主要设备的工作原理和控制方法,根据热力学定律,建立了空调机组控制系统的温度数学模型和湿度数学模型。依据数学模型,建立了温度和湿度数学表达式,完成空调机组的PID控制器设计。通过将PLC与PID控制技术相互结合,完成了空调机组控制系统的硬件系统整体设计。软件设计方面,以Windows CP系统为软件操作平台,运用Factory view studio组态软件完成了空调机组人机交互界面的设计,实现了空调机组系统状态监测、设备远程控制、报警日志查看、历史趋势查询等功能。整个空调机组控制系统对空调机组的运行进行了优化控制,可以动态检测和跟踪空调机组的负荷,实现对空调机组运行的实时控制,有效地解决了在复杂负荷变化情况下空调机组调节能力差的问题,提高了复杂工况下空调机组的使用效率和能源利用率,达到了节能降耗的效果。
[Abstract]:Nowadays, with the development of the construction industry, the human living environment is getting better and better, but at the same time, the energy consumption of the construction industry is increasing, according to the relevant statistics. In the whole construction industry, the most energy consumption is from the heating system air conditioning units, about 90% of the total building energy consumption. Such huge energy consumption not only accelerates the energy crisis, but also leads to the waste of resources and environmental pollution, so reduce the energy consumption of the construction industry. In particular, the energy consumption of HVAC units is very necessary. This paper takes the HVAC units in the plant HVAC system as the research object, and analyzes the possible factors that cause the large energy consumption of the HVAC units. It is concluded that the low automation level of the control system of the air conditioning unit leads to the low energy utilization ratio and the large energy consumption of the air conditioning unit. Therefore, the research and development of the control system of the air conditioning unit in the workshop based on PLC is put forward, and the process control flow of the HVAC system in the factory building is introduced in detail in this paper. The working principle and control method of the main equipment in each process of air conditioning unit are expounded, according to the law of thermodynamics. The mathematical model of temperature and humidity of air conditioning unit control system is established, and the mathematical expression of temperature and humidity is established according to the mathematical model. Through the combination of PLC and PID control technology, the whole design of hardware system and software design of the control system of air conditioning unit is completed. With Windows CP system as the software operating platform, Factory view studio configuration software is used to complete the design of man-machine interface of air conditioning unit. The system condition monitoring, remote equipment control, alarm log checking, historical trend query and other functions are realized. The whole air conditioning unit control system optimizes the operation of the air conditioning unit. It can dynamically detect and track the load of the air conditioning unit, realize the real-time control of the air conditioning unit operation, and effectively solve the problem of poor adjustment capacity of the air conditioning unit under the condition of complex load change. The utility efficiency and energy utilization ratio of air conditioning units under complex working conditions are improved, and the effect of energy saving and consumption reduction is achieved.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU83

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