建筑节能
建築節能
건축절능
CONSTRUCTION CONSERVES ENERGY
2014年
8期
8-12,24
,共6页
郝亚芬%敖永安%端木琳%王宗山
郝亞芬%敖永安%耑木琳%王宗山
학아분%오영안%단목림%왕종산
火墙式火炕%烟气流动%数值模拟%炕头温度%FDS5.3
火牆式火炕%煙氣流動%數值模擬%炕頭溫度%FDS5.3
화장식화항%연기류동%수치모의%항두온도%FDS5.3
hot-wall Kang%smoke flowing%numerical simulation%Kang surface temperature%FDS5.3
对比火墙式火炕和传统火炕内部烟气流动特性、烟气温度分布、炕面温度分布,分析两种炕体结构的热工性能,并为农村火炕的进一步优化设计提供理论依据。利用火灾动力学模拟软件FDS5.3应用大涡模拟方法的场模型、辐射模型模拟分析传统火炕和火墙式火炕的炕面温度、炕内烟气温度分布与烟气流动特性,得到相关云图和温度分布。火墙式火炕的炕面温度比传统型火炕炕面温度高10℃左右,向室内散热量大,在炕火墙和灶同时工作时,炕头中心温度达到85℃。火墙式火炕的炕体结构优于传统火炕,但仍然存在炕头过热的问题,有待进一步优化。
對比火牆式火炕和傳統火炕內部煙氣流動特性、煙氣溫度分佈、炕麵溫度分佈,分析兩種炕體結構的熱工性能,併為農村火炕的進一步優化設計提供理論依據。利用火災動力學模擬軟件FDS5.3應用大渦模擬方法的場模型、輻射模型模擬分析傳統火炕和火牆式火炕的炕麵溫度、炕內煙氣溫度分佈與煙氣流動特性,得到相關雲圖和溫度分佈。火牆式火炕的炕麵溫度比傳統型火炕炕麵溫度高10℃左右,嚮室內散熱量大,在炕火牆和竈同時工作時,炕頭中心溫度達到85℃。火牆式火炕的炕體結構優于傳統火炕,但仍然存在炕頭過熱的問題,有待進一步優化。
대비화장식화항화전통화항내부연기류동특성、연기온도분포、항면온도분포,분석량충항체결구적열공성능,병위농촌화항적진일보우화설계제공이론의거。이용화재동역학모의연건FDS5.3응용대와모의방법적장모형、복사모형모의분석전통화항화화장식화항적항면온도、항내연기온도분포여연기류동특성,득도상관운도화온도분포。화장식화항적항면온도비전통형화항항면온도고10℃좌우,향실내산열량대,재항화장화조동시공작시,항두중심온도체도85℃。화장식화항적항체결구우우전통화항,단잉연존재항두과열적문제,유대진일보우화。
The smoke’s flow characteristics, temperature distribution inside a Huo-Kang with and without hot-wall, and the surface temperature distribution of the Huo-Kang are analyzed. Differences be-tween the traditional Huo-Kang and the Huo-Kang with hot-wall are compared. Their thermal perfor-mances within the structures are expounded, which provide theory basis for better design of Huo-Kang in village. By using fire dynamics simulation software FDS5.3, the large eddy simulation method is applied to the field of model; radiation model simulation is used to analyze the surface temperature, smoke tempera-ture distribution and flow characteristics for the traditional Huo-Kang with and without hot-wall; and rele-vant cloud and temperature distribution are provided. The surface temperature of the Huo-Kang with hot-wall is about 10 ℃ higher than the traditional Huo-Kang; heat dissipating capacity of the Huo-Kang with hot-wall is bigger, when the hot-wall and the Huo-Kang are working together;the central surface tempera-ture of the head of the Huo-Kang with hot-wall is some 85 ℃. We get the conclusion that the structure of the Huo-Kang with hot-wall is superior to the traditional Huo-Kang, but it still has problem that the sur-face of head of Huo-Kang is too hot, it needs to improve.