【作者】 王闯；

【导师】 赵金玲；

【作者基本信息】 大连理工大学 ， 供热、供燃气、通风及空调工程， 2013， 硕士

【摘要】 在我国北方寒冷地区,太阳能空气供暖以其在热质传输、冬季防冷冻和设备维护等方面存在独特优势而被很多太阳能建筑所采用。由于太阳能具有不稳定性和间断性,太阳能空气供暖系统存在着能量供应和需求不匹配的矛盾,严重阻碍了其在太阳能建筑中的推广应用。为此,研究与太阳能空气供暖相匹配的建筑储热系统及其储放热性能,为有效缓解太阳热能供求在时间、强度和空间上不匹配的矛盾提供了科学依据,将具有十分重要的理论意义和工程实用价值。本研究提出了一种热风式太阳能混凝土地板储热系统,该储热系统以太阳能空气集热器提供的热气流为热源,混凝土地板作为储热构件,并由风机驱动热气流在系统内循环。在大连地区建成的实验房内,对该储热系统进行了实测研究,验证了该储热系统的有效性,并通过分析该储热系统在集热器供热量、热气流的湿度及流动速度等关键影响因素作用下的热响应,掌握了热风太阳能板储热系统的储／放热规律及对室内热环境的调节作用。其次,根据能量质量守恒定律,利用有限差分法,开发了热风式太阳能地板储热系统的动态传热数学模型,编制计算程序进行求解,通过计算数据与实测数据的对比验证了数学模型的准确性。最后,利用经验证的数学模型对热风式太阳能地板储热系统热性能进行了模拟分析。结果表明,太阳能建筑热工设计阶段应选用合适的集热器面积以匹配系统储热量；在典型年供暖期逐月平均室外气温条件下进行分析,最冷月一月份平均室内外温差最高,达到15.5℃,储热效果最为明显；采用光伏电板驱动风机使地板储热系统进风速度随集热器供热量同步变化,地板储热效果优于定风速储热系统。采用递阶层次法对太阳能储热系统进行地域适应性分析,太阳辐射照度与当地建筑围护结构传热指标及储热性能将是决定该地板储热系统是否适应良好的主要标准。更多还原

【Abstract】 The hot air solar collector is used for lots of solar architecture, because of the unique advantages for mass transfer, anti-freeze and equipment maintenance in the cold regions of northern China. However, due to the instability intermittent and the small air heat capacity of solar energy and other factors, it doesn’t match the energy supply and demand contradiction for the solar air heating system. Then it’s impediment to its popularization application of solar building seriously. To this end, the research of match the building and its regenerative heat storage performance for air.solar heating system, will provides a scientific basis of demand and supply for the effective mitigation of time, intensity and spatial mismatch contradiction for solar thermal energy. It will be a very important theoretical significance and practical value.In this study, basis of previous studies, we proposed a hot air solar concrete floor heat storage system for air solar heating. The air solar collectors provide heat for the hot air, concrete floor as a heat storage components, and the hot air is driven by fan circulates in the system. We have been a measured studied of the thermal storage system for experimental room built in rural areas in Dalian, and then it’s taken to verify the effectiveness and feasibility of thermal storage system. By analyzing the thermal response of thermal storage system working in the different heat collect, hot air humidity and wind speed or other critical factors. Then we will master the heat-moisture transfer characteristics and reservoir/heat release of the heat storage floor systems under solar air heating system.Secondly, we developed the mathematical models for predicting the properties of concrete floor, used the energy conservation mass combined finite difference method. Then we prepared a program to calculation the heat balance equation. The accuracy of mathematical model is verified for comparison the calculation data and measured data.Finally, using the proven mathematical model to simulated and analyzed the heat property of hot solar thermal heat storage floor systems. The results shows that the collector area should be a appropriate choice to match the system of heat storage for thermal solar building design phase. When the different typical month outdoor ambient temperature is used to research, the difference value between indoor and outdoor temperature reached highest15.5℃, so the regenerative effect is most evident. When the air velocity changed with heat supply of heat collector synchronization linear change, the heat storage effect is better. When the climate adaptation of solar thermal storage is analyses by hierarchical, solar radiation intensity and the heat transfer and storage thermal performance of local building envelope will be the main criteria to determine the adaption of thermal storage.更多还原