【作者】 田永铮；

【导师】 赵华；

【作者基本信息】 哈尔滨工业大学 ， 供热、供燃气、通风及空调工程， 2006， 硕士

【摘要】 在过去的几十年里,集中供热系统已经成为室内采暖的主要形式,并且在不久的将来将占据更加重要的地位。近年来,随着成套设备的快速发展,变频泵、平衡阀与温控阀等的使用,打破了供热系统的传统局面,计量供热在我国逐渐发展起来。当系统不再保持定流量或分阶段变流量运行时,系统的调节模式也将从传统方式中解放出来。这一变化,根本原因是用户个体调节使系统负荷不再仅是室外温度的单值函数,其影响因素还包括了用户的行为模式、随机热源等;而且它将导致对系统的调节有必要从传统的静态调节转变为动态的适应性调节。本文针对分户计量供热用户行为调节形式下的室内温度变工况的特点,应用热容量质点法对用户建立了“典型房间”这一较合理的动态数学模型,模拟分析以室内空气为主要研究对象的热用户在各内外扰量作用下室温变化情况,分析了系统动态特性下的规律和特点。本文提出了建立在典型房间基础上的户群模型,针对不保证房间问题,着重分析了负荷附加率的选取,提出了合理的选取建议;对内墙的三种保温处理方法进行逐一分析和比较;并且对外墙的两种保温处理方案进行了分析比较。本文在最后运用Matlab软件完成了户群热力工况动态模拟软件模块以及界面的设计,介绍了软件的应用范围,主要包括户群用户设计负荷的优化、户群用户围护结构保温处理的可行性分析和户群用户变工况下的模拟分析。使用这一模拟软件可以为进一步发展计量供热,完善集中供热系统提供必要的理论依据与建设性的方案。更多还原

【Abstract】 During the last ten years centralized heating system has become the main type of heating for rooms, and it will play an even more important role in the future. Recently with the rapid development of equipment, the application of pump with transducer, balance valve and thermostat changes the traditional situation of heating system. The heating system with metering has been gradually developed in our country. The regulation mode will be liberated from traditional mode when the system is not keep constant flow rate or operated with variable flow rate on different phase. The essential reason of this change is that the variable of the system’s heat load is not only the outdoor temperature, but also the users’behavior mode and random heat source because of users’individual regulation. This change eventually leads to the transformation from the traditionally static regulation to dynamic regulation.The“typical room”is established for users using the specific heat particle method aiming at the character of variable work condition of indoor temperature under the regulation mode of user’s behavior with room-metering heat supplying in this dissertation. Indoor temperature variety under the faction of inside and outside interference is simulated and analyzed for heat users using indoor air as the research object, the principle and the character under the system dynamic characteristic.The users-group model is brought forward based on typical room in the dissertation. The choice of radio of addition load is emphasized aiming at the issue of not ensured room, rational choosing suggestions are given; each of the three heat preservation methods for inner wall is analyzed and compared, two heat preservation methods for external wall are analyzed and compared.The dynamic simulation software module for thermal work condition and the design of interface are completed by using Matlab. The application area of the software is introduced, which includes the optimizing of users design load for users-group, the feasibility analysis of heat preservation handling of building envelope for users in users-group and the simulation analysis under the condition of variable circulate for users-group users. It’s useful to supply necessary更多还原