本文關(guān)鍵詞： 太陽(yáng)能煙囪建筑 自然排煙 自然通風(fēng) 縮比例實(shí)驗(yàn) 通風(fēng)口高度 空腔間距 輻射功率 火源功率　出處：《中國(guó)科學(xué)技術(shù)大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：太陽(yáng)能煙囪建筑利用太陽(yáng)能煙囪結(jié)構(gòu)進(jìn)行自然通風(fēng),其自然通風(fēng)效果優(yōu)良、自然通風(fēng)系統(tǒng)節(jié)能環(huán)保,有望成為減少建筑耗能、充分利用太陽(yáng)能的有效措施之一。太陽(yáng)能煙囪建筑的煙囪豎井結(jié)構(gòu)如果能夠用于自然排煙,既可避免機(jī)械排煙系統(tǒng)的資源閑置及一定的啟動(dòng)失效率,也可節(jié)約建筑耗能。目前關(guān)于太陽(yáng)能煙囪建筑在自然排煙方面研究較少,太陽(yáng)能煙囪能否兼顧自然排煙和自然通風(fēng)的效果,以及如何合理的設(shè)計(jì)其結(jié)構(gòu)參數(shù)目前還不清楚。因此,本文針對(duì)可同時(shí)用于自然通風(fēng)和自然排煙的太陽(yáng)能煙囪建筑的研究工作分為以下兩個(gè)方面:(1)太陽(yáng)能煙囪建筑自然通風(fēng)與自然排煙建筑結(jié)構(gòu)參數(shù)包括室內(nèi)通風(fēng)口高度、太陽(yáng)能煙囪空腔間距、玻璃幕墻厚度等,其中室內(nèi)通風(fēng)口高度和太陽(yáng)能煙囪空腔間距是影響自然通風(fēng)和自然排煙的重要建筑結(jié)構(gòu)參數(shù)。本文基于縮比例實(shí)驗(yàn)裝置,研究室內(nèi)通風(fēng)口高度和太陽(yáng)能煙囪空腔間距對(duì)太陽(yáng)能煙囪建筑自然通風(fēng)及自然排煙效果的影響,分析討論室內(nèi)通風(fēng)口風(fēng)速、窗戶(hù)風(fēng)速、太陽(yáng)能煙囪溫度分布、室內(nèi)豎直溫度分布及煙氣運(yùn)動(dòng)規(guī)律,可用于指導(dǎo)新型太陽(yáng)能煙囪建筑的建筑結(jié)構(gòu)參數(shù)設(shè)置。研究結(jié)果表明,自然通風(fēng)和自然排煙效果隨通風(fēng)口高度增加呈現(xiàn)先增大后減小的趨勢(shì),且最佳室內(nèi)通風(fēng)口高度位于窗戶(hù)上檐位置附近;自然通風(fēng)和自然排煙效果隨太陽(yáng)能煙囪空腔間距增加呈現(xiàn)先增大后減小的趨勢(shì)。(2)輻射功率及火源功率是太陽(yáng)能煙囪建筑自然通風(fēng)和自然排煙性能的關(guān)鍵邊界條件。通過(guò)研究不同輻射功率對(duì)太陽(yáng)能煙囪建筑自然通風(fēng)和自然排煙性能的影響規(guī)律,可以得出太陽(yáng)能煙囪建筑在不同緯度或者太陽(yáng)輻射功率下的性能差異。通過(guò)研究不同火源功率對(duì)太陽(yáng)能煙囪建筑自然通風(fēng)和自然排煙性能的影響規(guī)律,可以得出太陽(yáng)能煙囪建筑的控制火災(zāi)能力。本文基于縮比例實(shí)驗(yàn)裝置,研究輻射功率和火源功率對(duì)太陽(yáng)能煙囪建筑自然通風(fēng)及自然排煙效果的影響,分析討論室內(nèi)通風(fēng)口風(fēng)速、窗戶(hù)風(fēng)速、太陽(yáng)能煙囪溫度分布、室內(nèi)豎直溫度分布及煙氣運(yùn)動(dòng)規(guī)律,衡量太陽(yáng)能煙囪建筑不同維度或者太陽(yáng)輻射功率下的性能差異及其控制火災(zāi)能力。研究結(jié)果表明,自然通風(fēng)和自然排煙效果隨輻射功率的增加呈現(xiàn)增大的趨勢(shì);不同火源功率下,隨著火源功率的增加自然通風(fēng)風(fēng)速基本不變,自然排煙風(fēng)速逐漸增大,然而建筑內(nèi)部可見(jiàn)度降低、煙氣擴(kuò)散程度增高。
[Abstract]:Solar chimney buildings use solar chimney structure for natural ventilation, its natural ventilation effect is good, natural ventilation system energy conservation and environmental protection, it is expected to reduce building energy consumption, One of the effective measures to make full use of solar energy. If the chimney shaft structure of solar chimney building can be used for natural smoke exhaust, it can avoid the idle resources of mechanical smoke exhaust system and certain start-up failure rate. At present, there is less research on the natural smoke exhaust of solar chimney buildings, and whether solar chimneys can take into account the effects of natural smoke exhaust and natural ventilation, And how to design its structural parameters reasonably is not clear. The research work of solar chimney building which can be used for both natural ventilation and natural smoke exhaust is divided into two aspects as follows: 1) the structural parameters of natural ventilation and natural smoke exhaust in solar chimney buildings include the height of indoor vents. The space between solar chimney cavities, the thickness of glass curtain wall and so on. The height of indoor air vent and the space between the cavity of solar chimney are important structural parameters affecting natural ventilation and natural smoke exhaust. The effects of indoor ventilation height and space between solar chimney cavities on the natural ventilation and smoke emission of solar chimney buildings are studied. The wind speed of indoor vents, the wind speed of windows and the temperature distribution of solar chimneys are analyzed and discussed. The indoor vertical temperature distribution and smoke movement can be used to guide the structural parameters of the new solar chimney building. The results show that, The effect of natural ventilation and natural smoke exhaust increased first and then decreased with the increase of vent height, and the best indoor ventilation height was located near the eaves on the window. The effect of natural ventilation and natural smoke exhaust increases first and then decreases with the increase of the space between the solar chimney cavities.) the radiation power and the fire source power are the key boundary conditions for the natural ventilation and natural smoke exhaust performance of solar chimney buildings. By studying the influence of different radiation power on the natural ventilation and smoke exhaust performance of solar chimney buildings, It can be concluded that the performance of solar chimney buildings under different latitudes or solar radiation power is different. By studying the influence of different fire source power on the natural ventilation and smoke exhaust performance of solar chimney buildings, In this paper, the influence of radiation power and fire source power on the natural ventilation and smoke exhaust effect of solar chimney building is studied, and the wind speed of indoor vent is analyzed and discussed. The wind speed of windows, the temperature distribution of solar chimneys, the vertical temperature distribution in the room and the laws of smoke movement are measured to measure the difference of performance and fire control ability of solar chimney buildings under different dimensions or solar radiation power. The effect of natural ventilation and natural smoke exhaust increases with the increase of radiation power, and with the increase of fire source power, the natural ventilation wind speed increases gradually with the increase of fire source power. However, the internal visibility of the building is reduced and the degree of smoke diffusion is increased.
【學(xué)位授予單位】：中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TU834

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本文編號(hào)：1544671