某复合能源供热系统测试分析和运行策略优化

发布时间：2018-06-05 21:49

本文选题：复合能源系统 + 测试分析　；参考：《天津大学》2014年硕士论文

【摘要】：北方城镇供热能耗是我国建筑能耗的重要组成部分,也是建筑节能的重点。与燃煤等传统供热系统相比,复合能源系统往往包含如热泵、热电联产等技术,不仅利用可再生能源,而且能源利用效率也较高。然而随着系统的增多,联合运行参数变得复杂起来,系统实际运行效率往往很低;再加上复合能源系统实际运行的分析较少,系统实际运行的性能很难保证。复合能源系统运行策略优化存在很大的研究空间。针对上述问题,笔者通过测试,获得了某能源站复合能源系统整个供暖季的测试数据,主要对复合能源系统供热实际运行效果、运行策略优化以及优化后的节能效果进行分析。首先文章基于本复合能源系统中的地热梯级利用系统、水源热泵系统和地源热泵系统,提出了能源站总体和子系统的供热能效分析指标以及指标的求解方法,通过能效分析指标可以透彻的了解系统的运行现状以及能效情况,再经过分析即可得到系统的实际运行策略。接着介绍了测试能源站的系统概况以及对复合能源系统的供热测试概况,并通过上一部分提出的能效分析指标对本系统进行供热现状分析,得到系统实际的能耗情况、能效情况和运行策略情况。接着建立了各子系统供热主要的设备模型:板式换热器模型、热泵机组模型和水泵模型,并通过实测数据得到反映各个设备性能特点的公式。然后提出了一套完整的复合能源系统供热运行策略优化研究的理论方法,优化方法共包含三个阶段:第一阶段为子系统选择优化方法的确定,第二阶段为子系统中设备选择优化方法的确定,第三阶段为设备参数设置优化方法的确定。最后根据复合能源系统的优化方法制定出本复合能源系统可实现的最佳运行策略,并将优化后运行策略与实际运行策略进行对比,通过对供热能效分析指标的分析,得到复合能源系统最佳运行策略下的节能效果。
[Abstract]:Heating energy consumption in northern cities and towns is an important part of building energy consumption in China, and is also the focus of building energy conservation. Compared with traditional heating systems such as coal burning, composite energy systems often include technologies such as heat pump and cogeneration of heat and power, which not only use renewable energy, but also have higher energy efficiency. However, with the increase of the system, the joint operation parameters become more and more complicated, and the actual operation efficiency of the system is often very low. In addition, the analysis of the actual operation of the composite energy system is less, the performance of the system is difficult to guarantee. There is great space for research on the optimization of operation strategy of complex energy system. In view of the above problems, the author obtained the test data of the whole heating season of the compound energy system of a certain energy station through the test, mainly analyzed the actual operation effect, the operation strategy optimization and the optimized energy saving effect of the compound energy system. Firstly, based on the geothermal cascade utilization system, the water source heat pump system and the ground source heat pump system in the compound energy system, the energy efficiency analysis index of the total and subsystem of the energy station and the solution method of the index are put forward. Through the energy efficiency analysis index, we can understand the current situation and energy efficiency of the system thoroughly, and then get the actual operation strategy of the system through the analysis. Then it introduces the general situation of the system of the test energy station and the general situation of the heating test of the compound energy system, and through the energy efficiency analysis index put forward in the previous part, analyzes the current situation of the system, and obtains the actual energy consumption of the system. Energy efficiency and operational strategy. Then, the main equipment models of each subsystem are established: plate heat exchanger model, heat pump unit model and pump model, and the formulas reflecting the characteristics of each equipment are obtained by the measured data. Then a complete set of theoretical methods for the optimization of heating operation strategy of the composite energy system is proposed. The optimization method consists of three stages: the first stage is the determination of the optimization method for the subsystem. The second stage is the determination of the equipment selection optimization method in the subsystem, and the third stage sets the optimization method for the equipment parameters. Finally, according to the optimization method of the compound energy system, the optimal operation strategy of the compound energy system can be worked out, and the optimized operation strategy is compared with the actual operation strategy, and through the analysis of the energy efficiency analysis index of the heat supply, The energy saving effect under the optimal operation strategy of the composite energy system is obtained.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU83

【相似文献】