面向需求的室内非均匀环境营造若干关键问题研究

发布时间：2018-04-23 01:17

本文选题：室内环境 + 非均匀环境　；参考：《清华大学》2013年博士论文

【摘要】：传统室内环境营造方法主要针对单一的参数需求，营造近似均匀的参数环境。但实际中，同一空间中不同位置或区域可能同时存在有差异的参数需求，面向该类需求在各位置或区域间营造有差异的参数环境，即非均匀环境，将能切实提高需求保障水平。另一方面，随着建筑业的发展，用于室内环境营造的暖通空调能耗日益增高，因此，面向实际需求营造节能高效的非均匀环境意义重大。而对非均匀环境营造关键问题的研究，具有重要的学术意义和工程应用价值。论文围绕面向非均匀需求的室内环境营造关键问题进行了研究，包括：任意初始条件影响的快速预测方法、恒定源辨识方法、气流组织非均匀营造潜力评价方法和面向需求的送风参数优化调节方法，并且对非均匀环境的实现方法进行了探讨。主要创新性工作如下：（1）建立了基于分区思想和分初始条件可及度的任意初始条件影响快速预测方法，通过理论推导和数值验证，证明了方法的正确性。对不同区域划分数目下预测方法的精度进行了研究。利用送风可及度、污染源可及度和分初始条件可及度概念，建立了适应任意特征初始条件的室内任意位置瞬态浓度分布表达式；（2）对多源同时释放的源辨识方法进行了实验研究，对方法的可行性进行了验证，对不同因素对辨识结果的影响进行了分析。进一步开展了非同时释放的源辨识方法研究，，建立了两类典型的源非同时释放场景的辨识方法，并对方法进行了数值验证；（3）提出了评价不同气流组织在室内任意两位置或区域间营造参数差异潜力的送风差异度指标，利用该指标对不同气流组织下的非均匀营造潜力进行了分析，并将该指标在评价一项实际在建工程的空调个性化温度调控能力方面进行了应用；（4）建立了满足多位置不同参数需求的送风参数优化模型，通过算例展示了模型的可靠性。针对保障位置参数调节到位之前需求参数或源参数突然发生改变的情况，建立了响应改变的送风优化调节方法。建立了保障位置参数偏离设定值时的参数快速调控策略；（5）基于论文的研究成果，对面向需求的室内非均匀环境的实现方法进行了探讨，提出了多模通风的设计与控制思路。通过不同算例的分析，对现有通风系统下的非均匀参数营造过程以及多模通风系统的设计与送风调控进行了展示。论文研究成果将在参数分布规律、源参数获取、系统设计和参数控制方面为室内非均匀环境营造提供理论支撑。
[Abstract]:The traditional indoor environment construction method mainly aims at the single parameter demand, creates the approximate uniform parameter environment. However, in practice, different locations or regions in the same space may have different parameter requirements at the same time. In order to meet these requirements, different parametric environments, i.e. non-uniform environments, can effectively improve the level of demand guarantee. On the other hand, with the development of the construction industry, the energy consumption of HVAC used in indoor environment is increasing day by day. Therefore, it is of great significance to create an energy-efficient and non-uniform environment to meet the actual demand. The research on the key problems of non-uniform environment construction has important academic significance and engineering application value. In this paper, the key problems of indoor environment construction for non-uniform demand are studied, including: fast prediction method of arbitrary initial condition effect, constant source identification method. The evaluation method of non-uniform construction potential of airflow organization and the optimal adjustment method of air supply parameters for demand are discussed, and the realization method of non-uniform environment is also discussed. The main innovative work is as follows: (1) A fast prediction method for the influence of arbitrary initial conditions is established based on the idea of partition and the accessibility of sub-initial conditions. The correctness of the method is proved by theoretical derivation and numerical verification. The accuracy of the prediction method under different number of regions is studied. Using the concepts of air supply accessibility, pollution source accessibility and sub initial condition accessibility, an indoor transient concentration distribution expression for arbitrary characteristic initial conditions is established. The source identification method for simultaneous release of multiple sources is studied experimentally. The feasibility of the method is verified and the influence of different factors on the identification results is analyzed. In this paper, the identification method of non-simultaneous release source is further studied, and two typical identification methods of source non-simultaneous release scene are established. Numerical verification of the method is also carried out. An index of air supply difference degree is proposed to evaluate the potential of different airflow organizations to create parameter difference between any two positions or regions in the room. The potential of non-uniform construction under different airflow was analyzed by using this index. This index is applied to evaluate the individual temperature control ability of an actual project under construction. An optimized model of air supply parameters is established to meet the needs of multi-position and different parameters. The reliability of the model is demonstrated by an example. In view of the sudden change of requirement parameters or source parameters before the adjustment of guaranteed position parameters in place, a method of air supply optimization adjustment was established to respond to the change of position parameters. Based on the research results of the paper, the realization method of demand-oriented indoor non-uniform environment is discussed, and the design and control ideas of multi-mold ventilation are put forward. Through the analysis of different examples, the construction process of non-uniform parameters under the existing ventilation system and the design and control of the multi-model ventilation system are demonstrated. The research results of this paper will provide theoretical support for the building of indoor non-uniform environment in the aspects of parameter distribution law, source parameter acquisition, system design and parameter control.
【学位授予单位】：清华大学
【学位级别】：博士
【学位授予年份】：2013
【分类号】：TU83

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