多孔调湿材料对室内热湿环境的影响
发布时间：2018-11-20 20:15
【摘要】：随着世界能源危机的出现,能源的供给与需求关系矛盾愈发明显,各国纷纷提出节能减排的战略方针。作为能源消耗的重要部分,建筑能耗对于节能减排的重要影响逐渐被更多人关注。同时,随着我国经济的高速发展,人们也更多地追求更好的建筑环境,而这又会导致消耗更多的能源,这给整个建筑行业乃至全社会的节能减排带来更大挑战。作为被动式节能方式,多孔调湿材料因其对于建筑节能及建筑环境的重要影响进入人们视野。多孔调湿材料在室内空气相对湿度较高时会吸收空气中的水蒸气,降低室内空气相对湿度；而在室内空气相对湿度较低时,调湿材料又会将吸收的水蒸气释放到室内空气中,增加室内空气相对湿度。多孔调湿材料所具有的这种对室内湿气高吸低放的特性可以调节室内空气相对湿度,进而影响建筑的热湿能耗。因此,研究多孔调湿材料的吸放湿特性对于改善建筑室内热湿环境及建筑节能具有重要意义。本文通过数值模拟及实验研究两种方法探究了多孔调湿材料对建筑室内热湿环境的影响。数值模拟部分主要分析了三种多孔调湿材料热湿计算模型(热湿空气流动耦合模型-HAM、有效湿容模型-EC、有效湿渗透模型-EMPD)在不同空调系统、不同气候条件下的能耗模拟准确性及适用性,进而分析了多孔调湿材料对住宅建筑(房间在夜间使用)空调系统能耗的影响。首先使用HAM-Tools软件模拟了湿热气候下使用辐射式空调系统的住宅建筑中热湿计算模型的能耗模拟准确性及适用性,随后分析了多孔调湿材料在此种条件下对于住宅建筑能耗的影响及多孔调湿材料的在此种条件下的适用性。进而使用EnergyPlus软件模拟了湿热、温和、干热三种气候条件下使用对流式空调系统的住宅建筑中多孔调湿材料不同热湿计算模型的能耗模拟准确性及适用性,随后分析了多孔调湿材料在三种气候下对于住宅建筑能耗的影响及材料的适用性。实验研究部分主要探究了多孔调湿材料湿缓冲现象及不同多孔调湿材料湿缓冲值(MBV)。主要制作了新型相变蓄能与硅藻泥混合材料、纤维硅藻泥材料,测量了该2种材料与其它3种常见多孔材料在热湿气候下的湿缓冲值,实验针对环境温度及相对湿度区间作了定量改变,以探究环境温度及实验中相对湿度区间对于多孔调湿材料湿缓冲值的影响。
[Abstract]:With the emergence of the world energy crisis, the contradiction between energy supply and demand becomes more and more obvious. As an important part of energy consumption, the important influence of building energy consumption on energy saving and emission reduction has been paid more and more attention. At the same time, with the rapid development of our country's economy, people also more pursue better construction environment, which will lead to the consumption of more energy, which will bring more challenges to the whole construction industry and even the whole society. As a passive energy saving method, porous humidification materials have come into view because of its important influence on building energy saving and building environment. When the relative humidity of indoor air is high, the porous humidifying material will absorb the water vapor in the air and reduce the relative humidity of indoor air. When the relative humidity of indoor air is low, the moisture adjusting material releases the absorbed water vapor into the indoor air and increases the relative humidity of indoor air. The characteristics of porous humidifying materials such as high absorption and low release of indoor moisture can adjust the relative humidity of indoor air and then affect the energy consumption of heat and humidity in buildings. Therefore, it is of great significance to study the moisture absorption and desorption characteristics of porous humidification materials for improving the indoor thermal and moisture environment and building energy conservation. In this paper, the effects of porous humidifying materials on the indoor thermal and wet environment are investigated by numerical simulation and experimental study. In the part of numerical simulation, three kinds of heat and humidity calculation models of porous humidifying materials (HAM, effective moisture capacity model-EC, effective wet permeable model-EMPD) are analyzed in different air conditioning systems. The accuracy and applicability of energy consumption simulation under different climatic conditions are analyzed. The effects of porous humidification materials on energy consumption of air conditioning system in residential buildings (rooms used at night) are analyzed. Firstly, HAM-Tools software is used to simulate the accuracy and applicability of heat and moisture calculation model in residential buildings using radiation air conditioning system in humid and hot climate. Then the influence of porous humidifying materials on the energy consumption of residential buildings and the applicability of porous humidifying materials under such conditions are analyzed. Furthermore, the simulation accuracy and applicability of different heat and humidity calculation models of porous humidification materials in residential buildings with flow air conditioning system are simulated by using EnergyPlus software under three kinds of climate conditions: humid heat, mild heat and dry heat. Then, the effects of porous humidification materials on energy consumption of residential buildings in three climates and the applicability of the materials are analyzed. In the part of experiment, the wet buffer phenomenon of porous humidifying materials and (MBV). Of different porous humidifying materials are studied. A new phase change energy storage and diatom mud mixed material, fiberdiatom mud, was made. The wet buffering values of these two materials and other three common porous materials in hot and wet climate were measured. In order to explore the effect of ambient temperature and relative humidity on the wet buffer value of porous humidifying materials, the environmental temperature and relative humidity range were quantitatively changed in order to explore the effect of environmental temperature and relative humidity range on the wet buffer value of porous humidifying materials.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU111.4;TU111.195
本文编号：2345888
[Abstract]:With the emergence of the world energy crisis, the contradiction between energy supply and demand becomes more and more obvious. As an important part of energy consumption, the important influence of building energy consumption on energy saving and emission reduction has been paid more and more attention. At the same time, with the rapid development of our country's economy, people also more pursue better construction environment, which will lead to the consumption of more energy, which will bring more challenges to the whole construction industry and even the whole society. As a passive energy saving method, porous humidification materials have come into view because of its important influence on building energy saving and building environment. When the relative humidity of indoor air is high, the porous humidifying material will absorb the water vapor in the air and reduce the relative humidity of indoor air. When the relative humidity of indoor air is low, the moisture adjusting material releases the absorbed water vapor into the indoor air and increases the relative humidity of indoor air. The characteristics of porous humidifying materials such as high absorption and low release of indoor moisture can adjust the relative humidity of indoor air and then affect the energy consumption of heat and humidity in buildings. Therefore, it is of great significance to study the moisture absorption and desorption characteristics of porous humidification materials for improving the indoor thermal and moisture environment and building energy conservation. In this paper, the effects of porous humidifying materials on the indoor thermal and wet environment are investigated by numerical simulation and experimental study. In the part of numerical simulation, three kinds of heat and humidity calculation models of porous humidifying materials (HAM, effective moisture capacity model-EC, effective wet permeable model-EMPD) are analyzed in different air conditioning systems. The accuracy and applicability of energy consumption simulation under different climatic conditions are analyzed. The effects of porous humidification materials on energy consumption of air conditioning system in residential buildings (rooms used at night) are analyzed. Firstly, HAM-Tools software is used to simulate the accuracy and applicability of heat and moisture calculation model in residential buildings using radiation air conditioning system in humid and hot climate. Then the influence of porous humidifying materials on the energy consumption of residential buildings and the applicability of porous humidifying materials under such conditions are analyzed. Furthermore, the simulation accuracy and applicability of different heat and humidity calculation models of porous humidification materials in residential buildings with flow air conditioning system are simulated by using EnergyPlus software under three kinds of climate conditions: humid heat, mild heat and dry heat. Then, the effects of porous humidification materials on energy consumption of residential buildings in three climates and the applicability of the materials are analyzed. In the part of experiment, the wet buffer phenomenon of porous humidifying materials and (MBV). Of different porous humidifying materials are studied. A new phase change energy storage and diatom mud mixed material, fiberdiatom mud, was made. The wet buffering values of these two materials and other three common porous materials in hot and wet climate were measured. In order to explore the effect of ambient temperature and relative humidity on the wet buffer value of porous humidifying materials, the environmental temperature and relative humidity range were quantitatively changed in order to explore the effect of environmental temperature and relative humidity range on the wet buffer value of porous humidifying materials.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU111.4;TU111.195
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1 杨骏;多孔调湿材料对室内热湿环境的影响[D];南京大学;2015年
，本文编号：2345888
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