本文選題：大空間建筑 + 數(shù)值模擬　； 參考：《廣州大學(xué)》2014年碩士論文

【摘要】：大空間公共建筑規(guī)模大，能耗高，其節(jié)能潛力也大。而隨著綠色建筑理念和實踐的推行，生態(tài)建筑思想已進入了大空間建筑的領(lǐng)域中。結(jié)合大空間建筑特點，應(yīng)用通風(fēng)原理，研究設(shè)計一套混合通風(fēng)系統(tǒng)與空調(diào)聯(lián)合運行，代替?zhèn)鹘y(tǒng)的全程空調(diào)，以此生態(tài)建筑技術(shù)作為減少建筑能耗的技術(shù)措施，其中本文定義的混合通風(fēng)系統(tǒng)包括熱壓通風(fēng)，機械排風(fēng)輔助熱壓通風(fēng)及用于對濕度要求不嚴(yán)格的建筑的直接蒸發(fā)冷卻通風(fēng)降溫方式。 本文以廣州某航站樓指廊空調(diào)節(jié)能為研究對象，，通過Fluent數(shù)值模擬，并以室內(nèi)人員區(qū)域的溫度和風(fēng)速作為室內(nèi)通風(fēng)的評價參數(shù)，得出進風(fēng)口距地高度、進風(fēng)口尺寸高度、排風(fēng)壓差、室內(nèi)熱源及室外溫度對大空間建筑中采用熱壓通風(fēng)和機械排風(fēng)輔助熱壓通風(fēng)的影響情況。結(jié)果表明：排風(fēng)壓差的增加會主導(dǎo)室內(nèi)氣流組織，抑制了大空間熱力分層現(xiàn)象；若使機械排風(fēng)輔助于熱壓通風(fēng)，進風(fēng)口形式需滿足一定要求；進風(fēng)口距地高度為0.5m且其尺寸高度為1.5m為最佳進風(fēng)開口形式；在對濕度要求不嚴(yán)格的建筑中，采用直接蒸發(fā)冷卻通風(fēng)降溫方式能進一步降低室溫。 以機械通風(fēng)量、室內(nèi)熱源、室外溫度作為可變因子，利用多元線性回歸方法建立不同進風(fēng)口開口形式下的人員區(qū)溫度及風(fēng)速的回歸方程，以方差分析法對實驗結(jié)果分析，得出在混合通風(fēng)模式下，室外溫度和機械排風(fēng)量分別是室內(nèi)溫度、風(fēng)速的最顯著影響因子。結(jié)合已考慮風(fēng)速及濕度補償后的熱舒適適應(yīng)性模型和廣州地區(qū)典型年過渡季的逐時氣象參數(shù)，得出廣州地區(qū)采用空調(diào)與混合通風(fēng)系統(tǒng)聯(lián)合運行下各通風(fēng)空調(diào)模式間切換的室外干球溫度轉(zhuǎn)換值和各混合通風(fēng)模式下的可用舒適小時數(shù)。 最后，針對具體影響因子下的建筑，分析在空調(diào)與混合通風(fēng)系統(tǒng)聯(lián)合運行下的主要設(shè)備的能耗模型，結(jié)合DeST計算得到的建筑逐時冷負(fù)荷，選擇該建筑所用的設(shè)備類型。同時計算5、6、10月份，在不同運行策略下的各主要設(shè)備的運行能耗，從而獲得通過采用此聯(lián)合運行策略下廣州地區(qū)大空間建筑在最佳進風(fēng)口開口形式下節(jié)能率高達73.3%。對室內(nèi)濕度有嚴(yán)格要求的建筑，節(jié)能率降為62.9%，兩者均都可滿足綠色建筑評價標(biāo)準(zhǔn)關(guān)于節(jié)能率為60%的優(yōu)選項要求。而通過改變進風(fēng)口開口形式，該策略節(jié)能率受其較大影響。
[Abstract]:Large-space public building scale, high energy consumption, its energy-saving potential is also great. With the implementation of the concept and practice of green architecture, ecological architecture has entered the field of large space architecture. Combined with the characteristics of large space architecture and applying the ventilation principle, this paper studies and designs a set of mixed ventilation system and air conditioning combined operation, which replaces the traditional whole process air conditioning, and takes the ecological building technology as the technical measure to reduce the building energy consumption. The mixed ventilation system defined in this paper includes hot press ventilation mechanical ventilation assisted hot press ventilation and direct evaporative cooling ventilation for buildings with low humidity requirements. This paper takes the air conditioning energy saving of the digital corridor of a Guangzhou terminal as the research object, takes the temperature and wind speed of the indoor personnel area as the evaluation parameters of indoor ventilation through Fluent numerical simulation, and obtains the air inlet height from the ground height and the inlet size height. The influence of air pressure difference, indoor heat source and outdoor temperature on hot press ventilation and mechanical ventilation in large space buildings. The results show that the increase of exhaust pressure difference will dominate the indoor airflow organization and restrain the phenomenon of thermal stratification in large space, and if the mechanical exhaust air is assisted by hot press ventilation, the type of inlet should meet certain requirements. The air inlet is 0.5m from ground height and its dimension height is 1.5m. In the buildings where the humidity requirement is not strict, the room temperature can be further reduced by adopting direct evaporative cooling ventilation and cooling method. Taking mechanical ventilation, indoor heat source and outdoor temperature as variable factors, the regression equations of the temperature and wind speed in different air inlet openings were established by using multiple linear regression method. The experimental results were analyzed by variance analysis method. In the mixed ventilation mode, outdoor temperature and mechanical exhaust volume are the most significant factors of indoor temperature and wind speed, respectively. Combined with the thermal comfort adaptability model after considering wind speed and humidity compensation and the hourly meteorological parameters of typical transitional seasons in Guangzhou area, The outdoor dry ball temperature conversion values and the number of available comfortable hours under the combined operation of air conditioning and mixed ventilation system in Guangzhou are obtained. Finally, the energy consumption model of the main equipment under the combined operation of air conditioning and mixed ventilation system is analyzed for the buildings under specific influence factors. Combined with the hourly cooling load calculated by DeST, the type of equipment used in the building is selected. At the same time, the energy consumption of each main equipment under different operation strategies is calculated in October, and the energy saving rate of large space buildings in Guangzhou area under the optimal opening form of air inlet is obtained by adopting this combined operation strategy as high as 73.3%. For buildings with strict indoor humidity requirements, the energy saving rate is reduced to 62.9, both of which can meet the requirements of the green building evaluation standard for energy saving rate of 60%. By changing the opening form of the inlet, the energy saving rate of the strategy is greatly affected by it.
【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU831

【參考文獻】

相關(guān)期刊論文 前10條

1 李先瑞;空調(diào)、供熱水系統(tǒng)泵的節(jié)能[J];節(jié)能與環(huán)保;2002年05期

2 王龍;潘毅群;黃治鐘;;建筑外窗自然通風(fēng)流量系數(shù)的影響因素分析[J];建筑節(jié)能;2012年06期

3 劉猛;錢發(fā);MCKINNELL Keitha;李永強;;夏熱地區(qū)商場類建筑集中空調(diào)系統(tǒng)全新風(fēng)運行性能分析[J];土木建筑與環(huán)境工程;2011年03期

4 李志生;李冬梅;劉旭紅;朱雪梅;王曉霞;;廣州市20棟大型公共建筑能耗特征分析[J];建筑科學(xué);2009年08期

5 李異;官燕玲;;辦公建筑通風(fēng)空調(diào)聯(lián)合運行的節(jié)能分析[J];建筑熱能通風(fēng)空調(diào);2010年05期

6 張謀雄;冷水機組變流量的性能[J];暖通空調(diào);2000年06期

7 田元媛,許為全;熱濕環(huán)境下人體熱反應(yīng)的實驗研究[J];暖通空調(diào);2003年04期

8 燕達 ,謝曉娜 ,宋芳婷 ,江億;建筑環(huán)境設(shè)計模擬分析軟件DeST 第一講 建筑模擬技術(shù)與DeST發(fā)展簡介[J];暖通空調(diào);2004年07期

9 左政;胡文斌;;基于建筑全年動態(tài)冷負(fù)荷的冷水機組優(yōu)化配置方案[J];暖通空調(diào);2009年02期

10 曲凱陽;胡德祥;王連吉;呂鳳海;;空調(diào)冷卻水系統(tǒng)最優(yōu)節(jié)能控制策略[J];暖通空調(diào);2010年04期

相關(guān)博士學(xué)位論文 前1條

1 金振星;不同氣候區(qū)居民熱適應(yīng)行為及熱舒適區(qū)研究[D];重慶大學(xué);2011年

本文編號：1953454