本文選題：通風(fēng)換氣 + CO_2濃度　； 參考：《南華大學(xué)》2013年碩士論文

【摘要】：隨著經(jīng)濟(jì)的快速發(fā)展，人民生活水平的提高，城市居民每天平均約有80%以上的時(shí)間在室內(nèi)生活、工作等，室內(nèi)環(huán)境的質(zhì)量不僅僅與居民的身體健康和舒適性有影響，更顯著的影響著室內(nèi)工作人員的工作效率，因此，建筑室內(nèi)環(huán)境質(zhì)量越來(lái)越受到人們的重視。 目前，辦公室內(nèi)大量使用分體式空調(diào)，室內(nèi)沒(méi)有有組織的新風(fēng)，主要是依靠門窗滲入或通過(guò)開(kāi)窗換氣而獲得新風(fēng)的，但受空調(diào)降溫、采暖及霧霾、沙塵等天氣的限制。為了研究辦公室內(nèi)通風(fēng)換氣的有效性，在模擬研究過(guò)渡季節(jié)及夏、冬兩種氣候條件下?lián)Q氣量和換氣速率對(duì)室內(nèi)空氣環(huán)境的影響，探討小型通風(fēng)換氣裝置參數(shù)的選擇，主要研究成果如下： 1、外墻在采用定熱流和絕熱邊界條件時(shí)，模擬研究辦公室內(nèi)氣流速度、空氣溫度的分布差異較大。夏季工況，當(dāng)外墻傳熱時(shí)比絕熱時(shí)的室內(nèi)溫度高1.5℃；冬季工況，外墻傳熱時(shí)比絕熱時(shí)低3.5℃；前者明顯比后者的吹風(fēng)感小且速度分布更均勻。 2、在過(guò)渡季節(jié)僅利用通風(fēng)換氣裝置的換氣模式時(shí)，模擬研究室內(nèi)氣流速度、空氣溫度、CO_2濃度及熱舒適性的分布狀況。結(jié)果表明，當(dāng)室外溫度為20℃時(shí)，室內(nèi)空氣的溫度為22.3℃，呼吸區(qū)平均的CO_2濃度約為890ppm。 3、模擬研究通過(guò)改變通風(fēng)換氣量對(duì)室內(nèi)空氣環(huán)境的影響，得到控制呼吸區(qū)的CO_2的平均濃度為1000ppm所需要的最小換氣量是49.8m3/h。 4、在滿足室內(nèi)通風(fēng)換氣的前提下，通過(guò)改變通風(fēng)換氣裝置在回收模式時(shí)的通風(fēng)換氣速率，結(jié)合掛壁式空調(diào)制冷、制熱時(shí)最佳送風(fēng)方式時(shí)，模擬研究辦公室的氣流速度、空氣溫度、CO_2濃度及熱舒適性的分布情況。結(jié)果表明，，隨著換氣風(fēng)速變大時(shí)，夏季室內(nèi)的平均氣流速度會(huì)增大，而冬季室內(nèi)的平均氣流速度會(huì)減小。
[Abstract]:With the rapid development of economy and the improvement of people's living standard, the average urban residents spend more than 80% of their time indoors living and working every day. The quality of indoor environment is not only affected by the residents' physical health and comfort. More significant impact on the work efficiency of indoor staff, therefore, the quality of indoor environment has been paid more and more attention. At present, a large number of separate air conditioning is used in the office. There is no organized fresh air in the room. It mainly depends on the infiltration of doors and windows or the ventilation through windows to obtain fresh air, but it is limited by the cooling of air conditioning, heating and smog, dust and other weather. In order to study the effectiveness of ventilation and ventilation in the office, the effects of air exchange volume and air exchange rate on indoor air environment during the transition season, summer and winter were simulated, and the selection of parameters of small ventilation and air exchange device was discussed. The main results are as follows: 1. When the heat flux and adiabatic boundary conditions are adopted, the distribution of air velocity and air temperature in the office is different. In summer, the temperature of the exterior wall is 1.5 鈩

本文編號(hào)：2049402