本文選題：水電站 + 熱壓通風(fēng)�。� 參考：《西安建筑科技大學(xué)》2014年碩士論文

【摘要】：自然通風(fēng)是一項(xiàng)具有節(jié)約資源、減少環(huán)境污染、實(shí)現(xiàn)可持續(xù)發(fā)展的室內(nèi)空氣通風(fēng)降溫技術(shù)。自然通風(fēng)的驅(qū)動力來自熱壓和風(fēng)壓，由于風(fēng)壓具有變化幅度大、不穩(wěn)定的特點(diǎn)，自然通風(fēng)的設(shè)計(jì)僅考慮熱壓的作用[1]。盡管利用自然通風(fēng)改善建筑熱濕環(huán)境多年來得到了廣泛應(yīng)用，但是如何結(jié)合當(dāng)?shù)貧夂驐l件，通過合理設(shè)計(jì)進(jìn)出風(fēng)口的位置、面積來改善高大廠房熱濕環(huán)境等方面仍存在許多問題有待于進(jìn)一步研究。水電站主變室位于主變洞中，主變搬運(yùn)廊道一側(cè)，結(jié)構(gòu)屬于高大空間，其內(nèi)部變壓器熱源散熱量較大，進(jìn)風(fēng)口一般設(shè)置變壓器前方的墻體上，通風(fēng)方式大多采用自然通風(fēng)。 在熱壓自然通風(fēng)中，有效熱量系數(shù)m是標(biāo)志房間溫度分布的特征性參數(shù)，mQ（Q為車間內(nèi)工藝設(shè)備的總散熱量）為直接進(jìn)入工作區(qū)的那部分熱量。中和面對主變室通風(fēng)氣流分布有重要的影響，降低中和面的高度可以改善主變室熱環(huán)境。 本文以廣東惠州抽水蓄能電站廠房中主變室自然通風(fēng)降溫的提升技術(shù)為研究對象，建立物理模型和數(shù)學(xué)模型，模擬了主變室在不同工況下的室內(nèi)流場分布情況、有效熱量系數(shù)m和中和面高度，提出了合理的自然通風(fēng)優(yōu)化方案；對全年動態(tài)氣候參數(shù)下主變室的氣流組織進(jìn)行了數(shù)值模擬與分析計(jì)算。并將廣東惠州抽水蓄能電站現(xiàn)場實(shí)測值和模擬值進(jìn)行了對比分析，，該研究結(jié)論為水電站主變室以及類似高大廠房的熱壓自然通風(fēng)設(shè)計(jì)提供了參考。
[Abstract]:Natural ventilation is a cooling technology of indoor air which can save resources, reduce environmental pollution and realize sustainable development. The driving force of natural ventilation comes from hot pressure and wind pressure. Because the wind pressure has the characteristics of large range of variation and instability, the design of natural ventilation only considers the effect of hot pressure [1]. Although the use of natural ventilation to improve the thermal and wet environment of buildings has been widely used for many years, how to properly design the location of the air inlet and outlet in combination with local climatic conditions, There are still many problems in the area to improve the thermal and wet environment of the large powerhouse. The main transformer chamber of the hydropower station is located in the main transformer tunnel, the main transformer conveys the corridor side, the structure belongs to the large space, its internal transformer heat source is large, the air inlet is generally set on the wall in front of the transformer, the ventilation mode is mostly natural ventilation. In natural hot press ventilation, the effective heat coefficient m is the characteristic parameter indicating the temperature distribution of the room. The air flow distribution in the main transformer chamber is greatly affected by neutralization, and the thermal environment of the main transformer chamber can be improved by lowering the height of the neutralization plane. In this paper, the lifting technology of natural ventilation and cooling in main transformer chamber of Huizhou pumped Storage Power Station in Guangdong Province is taken as the research object, and the physical and mathematical models are established to simulate the distribution of flow field in the main transformer chamber under different working conditions. Based on the effective heat coefficient m and the height of the neutral plane, a reasonable scheme of natural ventilation optimization is proposed, and the airflow distribution of the main transformer chamber under the annual dynamic climatic parameters is numerically simulated and analyzed. The field measured and simulated values of Huizhou pumped-storage power station in Guangdong Province are compared and analyzed. The results provide a reference for the design of natural hot pressure ventilation in the main transformer chamber of hydropower station and the similar large workshop.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV735

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