本文選題：極端濕熱 + 空調(diào)房間��； 參考：《西安建筑科技大學》2017年碩士論文

【摘要】：能源是人類活動所必需的物質(zhì)基礎,是推動整個社會生產(chǎn)力發(fā)展的根本,一個國家對能源的掌控能力在一定程度上決定了它的興衰。節(jié)約能源要從減少能源消耗入手。社會總能耗主要分為生產(chǎn)能耗與生活能耗兩種,而生活能耗中耗能最多的環(huán)節(jié)在于交通與建筑。建筑所使用的能源很多大一部分消耗在了采暖和制冷上,研究圍護結(jié)構內(nèi)部熱濕傳遞過程對于合理進行墻體熱工設計,提高建筑保溫效果,降低建筑能耗有非常重要的意義。而極端濕熱氣候區(qū)常年高溫高濕,在氣候條件的影響下墻體內(nèi)部可能含有更多的水分,從而影響到墻體的保溫效果,也就會導致更多的制冷量散失,所以針對極端濕熱氣候狀況下墻體熱濕傳遞的研究十分必要。本文對比分析了極端濕熱氣候區(qū)與我國典型濕熱氣候城市的氣象數(shù)據(jù),總結(jié)出該地區(qū)相比較于典型濕熱氣候的顯著特點在于長時間處于較高的溫度濕度狀態(tài),同時伴有強烈的太陽輻射與大風降水天氣,對房屋外墻的熱濕傳遞產(chǎn)生很大影響。本文從經(jīng)典熱濕傳遞原理出發(fā),分析了熱量濕分在極端濕熱氣候狀況下在圍護結(jié)構多孔材料內(nèi)部傳遞的機理與傳熱傳濕過程之間的耦合方式,以溫度與空氣相對濕度為驅(qū)動勢,依靠單元質(zhì)量守恒與能量守恒定律建立了適合在極端濕熱氣候狀況下使用的熱濕傳遞方程并確定了邊界條件。然后通過使用COMSOL多物理場耦合模擬計算軟件進行離散計算,并通過HUMSTAD實驗案例驗證了模型的科學性,對以后在該地區(qū)的熱濕傳遞研究以及圍護結(jié)構構造研究提供了參考。最后本文還運用模型具體計算分析了考慮熱濕耦合傳遞與單純熱傳遞,內(nèi)保溫與外保溫,不同保溫層厚度、不同室內(nèi)設計溫度、有無太陽輻射等因素對于極端濕熱氣候狀況下空調(diào)房間外墻熱濕狀態(tài)的影響作用。得出了濕傳遞能夠明顯減小墻體內(nèi)溫度振幅,在極端濕熱氣候狀況下不適合使用外保溫的構造形式;對于24小時空調(diào)運行建筑來說,不同的保溫層厚度對于墻體內(nèi)的熱濕狀況影響不明顯;室內(nèi)空調(diào)設置的溫度不宜過低;該地區(qū)強烈的太陽輻射會導致外墻外表面溫度升高1-2℃并使墻體內(nèi)溫度波動呈現(xiàn)與太陽輻射強度相近的規(guī)律性等結(jié)論。
[Abstract]:Energy is the necessary material basis for human activities and the fundamental to promote the development of the whole social productive forces. To a certain extent, a country's ability to control energy determines its rise and fall. Energy conservation should start with reducing energy consumption. The total energy consumption of society is divided into production energy consumption and living energy consumption, and the most energy consumption of life energy consumption is traffic and building. Most of the energy used in buildings is consumed on heating and refrigeration. It is very important to study the heat and moisture transfer process in the enclosure structure for reasonable wall thermal design, improve the thermal insulation effect of buildings and reduce building energy consumption. Under the influence of climatic conditions, the wall may contain more water, thus affecting the insulation effect of the wall, which will lead to more cooling loss. Therefore, it is necessary to study the heat and moisture transfer of wall in extreme humid climate. In this paper, the meteorological data of extreme humid and thermal climate regions are compared with those of typical cities in China. It is concluded that the remarkable characteristic of this area compared with typical humid and thermal climate is that it is in a high temperature and humidity state for a long time. At the same time, strong solar radiation and strong wind and precipitation weather have great influence on the heat and moisture transfer of the exterior walls of buildings. Based on the classical heat and moisture transfer principle, this paper analyzes the coupling mode between the heat and moisture transfer mechanism and the heat and moisture transfer process in the porous materials of the envelope structure under the extreme humid and humid climate conditions, and takes the temperature and the air relative humidity as the driving potential. Based on the conservation laws of mass and energy, the heat and moisture transfer equations are established and the boundary conditions are determined. Then the discrete calculation is carried out by using the COMSOL multi-physical field coupling simulation software, and the scientific model is verified by the HUMSTAD experimental case, which provides a reference for the research of heat and moisture transfer and the construction of the enclosure structure in this area. Finally, the model is used to calculate and analyze the heat and humidity coupling transfer and pure heat transfer, internal and external heat preservation, different thickness of insulation layer, different indoor design temperature. The influence of solar radiation on the heat and humidity of the exterior wall of air conditioning room under extreme humid and thermal climate. It is concluded that moisture transfer can obviously reduce the amplitude of temperature in the wall, and it is not suitable to use external heat preservation in extreme humid and hot climate. The influence of different thickness of insulation layer on the heat and humidity of the wall is not obvious, and the temperature of indoor air conditioning should not be too low. The strong solar radiation in this area will cause the external wall surface temperature to rise by 1-2 鈩，

本文編號：1809443