VENT在直洞火炕热舒适度研究中的应用
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摘要
火炕是我国北方农牧民居住建筑冬季室内供暖的主要设施之一,至今仍在广泛使用。目前火炕的搭建仍然以民间经验为主,普遍存在热舒适度差、热效率低等问题。运用流体力学理论和VENT模拟软件,对直洞火炕的烟气流场分布、旋涡状况进行模拟分析,进而对其烟道进行优化设计,可以明显改善烟气流场分布,大幅减少旋涡区面积,使更大范围的烟道炕洞、炕面板能够接触到高温烟气进而吸蓄、存贮、释放烟气热量,大幅提升火炕热舒适度,也为火炕的优化设计提供了一种新的技术方法。
Kang is one of the main indoor heating facilities for farmers and herdsmen living in winter in northern China, and is still widely used. At present, the construction of Kang is still dominated by folk experience, and there are many problems such as low thermal efficiency, poor thermal comfort and fast cooling. By using the fluid mechanics theory and the VENT simulation software, the flue gas flow field distribution and the eddy current situation are simulated and analyzed, and the flue is optimized. The distribution of smoke flow field can be significantly improved, and the area of the eddy current zone can be greatly reduced, so that a larger range of flue tunnels, sill panels can be exposed to high-temperature flue gas, and can absorb, store, and release flue gas heat, which greatly improves the heat comfort of the Kang. It also provides a new technical method for the optimal design of the Kang.
Kang is one of the main indoor heating facilities for farmers and herdsmen living in winter in northern China, and is still widely used. At present, the construction of Kang is still dominated by folk experience, and there are many problems such as low thermal efficiency, poor thermal comfort and fast cooling. By using the fluid mechanics theory and the VENT simulation software, the flue gas flow field distribution and the eddy current situation are simulated and analyzed, and the flue is optimized. The distribution of smoke flow field can be significantly improved, and the area of the eddy current zone can be greatly reduced, so that a larger range of flue tunnels, sill panels can be exposed to high-temperature flue gas, and can absorb, store, and release flue gas heat, which greatly improves the heat comfort of the Kang. It also provides a new technical method for the optimal design of the Kang.
引文
[1] 赵洋,朱俊亮,王宗山,端木琳,舒海文.舒适节能火墙式火炕结构及特点的研究与分析[J].中国住宅设施,2009,(11):60-64.
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[2] 朱俊亮.基于火墙式火炕农村采暖系统的研究[D].大连理工大学,2010.
[3] 陈滨,庄智,杨文秀.被动式太阳能集热墙和新型节能灶炕耦合运行模式下农村住宅室内热环境的研究[J].暖通空调,2006,(2):20-24.
[4] 郭继业.省柴节煤炉灶炕技术与发展趋势[J].农民科技培训,2013,(12):30-32.
[5] 张培红,夏福龙,符靖宇.火炕采暖效果影响因素的数值模拟和分析[J].沈阳建筑大学学报(自然科学版),2009,25(2):342-346.
[6] 端木琳,赵洋,王宗山,舒海文,朱俊亮,单红娜.火炕热工性能的研究及其评价方法[J].建筑科学,2009,25(12):30-38.
[7] 郝亚芬,敖永安,端木琳,王宗山.火墙式火炕内烟气流动特性数值模拟分析[J].建筑节能,2014,42(8):8-12,24.
[8] 韩毅,张雪研.农村住宅不同采暖方式的模拟对比分析[J].建筑节能,2010,38(5):67-69.
[9] 许圣华.烟气物性的直接计算方法[J].苏州丝绸工学院学报,1999,(3):32-36.
[10] 赵洋.北方村镇火墙式火炕采暖系统热性能研究[D].大连理工大学,2009.