基于TRNSYS的变风量空调系统优化控制仿真

发布时间：2019-05-29 01:35

【摘要】：随着我国迈向经济强国步伐的加快，，人民生活质量得以迅速改善，从而对居住条件的要求也越来越严格了，居住环境良好的舒适性是靠暖通空调系统来维持的，所以越高的舒适性就意味着越高的能源消耗，导致我国建筑能耗激增，而建筑能耗在我国总能耗中占有不小的比重，从十一五开始，国家就提倡节能减排，走可持续发展的道路，所以如何降低建筑能耗是我们暖通人的首要任务。在总的建筑能耗中，有好大一部分能耗还是可以通过某些办法节约下来的，可以说建筑能耗节能潜力巨大，对于空调系统而言，可以通过对空调系统进行优化配置，提出合理的控制策略和严密的控制系统来达到节能目的。在本文中，首先介绍了变风量空调系统的一些基本知识，包括变风量空调系统的原理、类型、特点及其控制部分，除此之外还介绍了仿真模拟软件TRNSYS及变风量空调系统中各设备的数学模型，以方便于后面建立空调系统模型及提出良好的控制策略。然后利用TRNSYS软件中的TRNbuild搭建了模拟所需的一栋三层建筑模型，在TRNSYS中详细构建了VAV空调系统模型，并对同一建筑模型制定了两种不同的VAV空调系统控制策略，详细介绍了各控制策略在TRNSYS-Studio中的实现过程及方法。最后，在以达到室内舒适生活环境为最终目的前提下（当然不同控制策略下室内舒适性不一样，本文也对不同控制策略下设计日室内温度做了对比分析），对两种不同控制策略下各设备的分项能耗及总能耗进行了对比分析，结果表明总能耗中，优化控制比一般控制节能20%，其中冷水机组、锅炉节能效果不明显，节能率分别为18%和15%，风机、水泵等设备节能效果显著，节能率分别为32%和30%。通过此仿真模拟过程，可以为实际工程中的VAV空调控制系统设计或优化运行提供参考与借鉴。
[Abstract]:With the acceleration of China's progress towards an economic power, the quality of life of the people has been rapidly improved, and the requirements for living conditions have become more and more stringent. The comfort of the good living environment is maintained by HVAC system. Therefore, the higher the comfort means the higher the energy consumption, which leads to the surge of building energy consumption in our country, and the building energy consumption accounts for a large proportion of the total energy consumption in our country. Since the 11th five-year Plan, the state has advocated energy conservation and emission reduction. Take the road of sustainable development, so how to reduce building energy consumption is our primary task. In the total building energy consumption, a good part of the energy consumption can still be saved by some means, it can be said that the building energy consumption energy saving potential is huge, for the air conditioning system, we can optimize the configuration of the air conditioning system. Reasonable control strategy and strict control system are put forward to achieve the purpose of energy saving. In this paper, some basic knowledge of variable air volume air conditioning system is introduced, including the principle, type, characteristics and control part of variable air volume air conditioning system. In addition, the simulation software TRNSYS and the mathematical model of each equipment in VAV air conditioning system are also introduced in order to facilitate the establishment of air conditioning system model and put forward a good control strategy. Then a three-story building model is built by using TRNbuild in TRNSYS software, and the VAV air conditioning system model is constructed in TRNSYS, and two different VAV air conditioning system control strategies are worked out for the same building model. The implementation process and method of each control strategy in TRNSYS-Studio are introduced in detail. Finally, under the premise of achieving indoor comfortable living environment (of course, the indoor comfort is different under different control strategies, this paper also makes a comparative analysis of the design day indoor temperature under different control strategies). The partial energy consumption and total energy consumption of each equipment under two different control strategies are compared and analyzed. the results show that the energy saving effect of optimal control is 20% higher than that of general control, and the energy saving effect of chillers and boilers is not obvious. The energy saving rates are 18% and 15%, respectively. The energy saving rates of fans, pumps and other equipment are 32% and 30%, respectively. Through this simulation process, it can provide reference and reference for the design or optimal operation of VAV air conditioning control system in practical engineering.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU831.3

【相似文献】