摘要：【中文摘要】 文中通過對太陽能采暖蓄熱水箱多節(jié)點模型分析研究,建立蓄熱水箱模型,利用CFD軟件對蓄熱水箱內(nèi)溫度分層情況分各種工況進行模擬分析,分析結(jié)果表明:蓄熱水箱進出水管流速越小,水箱內(nèi)溫度分層越明顯,給出推薦z*佳流速應在0.01～0.05 m/s范圍內(nèi),且可通過在進水管端處設置漸擴裝置來保證流速取到z*佳流速;蓄熱水箱采暖供水管的位置建議至少應在2/3水箱高度以上,具體位置應根據(jù)采暖用戶供水溫度的要求而將管段設置在要求的溫度范圍對應的水箱高度處。 【英文摘要】 Based on the analysis of the nodal model of heat storage tank for solar heating system,a nodal model of heat storage tank was simulated in different conditions with the help of CFD.It is found that the lower the water velocity at the inlet of the pipe is,the more obviously the layers are,and the recommended velocity is between 0.01 and 0.05 m/s,which can be obtained with a increasing coupling at the entrance of the pipe.The water supply pipe should be installed no lower than 2/3 times high of the tank,and in practical project,the location should be decided according to the supply water temperature. 【中文關(guān)鍵詞】 太陽能采暖; 蓄熱水箱; CFD; 溫度分層【英文關(guān)鍵詞】 solar heating; heat storage tank; Computational Fluid Dynamics(CFD); temperature stratification