高溫管路熱散失之分析研究

Analysis of Heat Loss in High Temperature Pipe

林欣儀(Xin-Yi Lin) ； 許聖彥(Sheng-Yen Hsu) ； 蔡建雄(Chien-Hsiung Tsai) ； 陳建成(Jian-Cheng Chen) ； 唐紹文(Shao-Wen Tang)

《燃燒季刊》 96期 (2017/02) Pp. 32-43

https://doi.org/10.30041/CQ.201702_(96).0003

摘要

分離式蓄熱燃燒系統可提高廠內空間受限之廠域應用蓄熱體回收廢熱的機會，解決高溫廢氣與燃料浪費等問題。因此本研究針對分離式蓄熱系統的熱管件的熱逸散進行分析，分別以一維徑向熱傳模式，分析絕熱包覆材所需之厚度，再利用計算流體力學CFD 的方法分析絕熱管件之熱逸散情況，其測試之參數包括高溫氣體的溫度及流速、絕熱管件之尺寸與材料性質的影響。本研究最終將其各參數對出口氣體溫度的影響整理成一試算方程式，其在測試範圍內誤差＜1%。

關鍵字

廢熱回收 ； 數值計算 ； 蓄熱式燃燒系統

並列摘要

Separated regenerative heat system can improve the application opportunities for the limited domain in the factories to solve high temperature exhaust and the fuel waste problem. Therefore, this study analyzed the heat dissipation in the pipe of separated regenerative heat recovery system. In this study, the required thickness of the insulation material and the heat dissipation situation at heat-insulation pipe are respectively analyzed by the one-dimensional radial thermal transfer model and CFD model. The parametric study includes the gas temperature, the flow rate, the size of the insulation pipe and the insulated material properties. This study ultimately consolidates the affection of various parameters in the outlet gas temperature into a spreadsheet formula, the error in the test range＜1%.

並列關鍵字

Waste heat recovery ； Numerical calculation ； Regenerative combustion system