Development of Design Method to Prevent Reverse Flow at Smoke Protect Opening in Pressurization

增压防烟口防逆流设计方法的研究

• 批准号: 17560539
• 负责人: NAGANO Shinichiro
• 金额: $ 2.42万
• 依托单位: Kanazawa Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560539/
• 关键词: Fire; Building Equipment; Fire Fighting; Smoke Extraction in Pressurization; Smoke Protect; Experiment; Computational Fluid Dynamics

This project is purposed to establish the design method to prevent reverse flow at the smoke protect opening in pressurization.The experiments were conducted by use of a test room with same size two rooms (W3000xD3000xH2200mm) in Kanazawa Institute of Technology. One room was regarded as supply air room, another room was regarded as non supply air room like a corridor. The smoke protect opening in supply air room was measured at 25 points by use of the 3-dimensional super sonic anemometer. The pyramidal paper object was set in front of the supply opening. The series of measurement were conducted by changing an oblique angle and a distance from the base of an object to the face of supply opening. The results of investigation were confirmed by use of computational fluid dynamics also. The experiment results were nearly similar to the simulation results.The results are as the followings.(1) It had better pointed the supply air jet at sidewall to form a uniform airflow distribution on the smoke protect opening.(2) The reverse flow on smoke protect opening has a tendency to reduce with 100mm at the distance from supply opening to the base of object and the oblique angle 0 degree nearly like a plane.(3) The size of supply opening had better equal to the obstacle size in front of the supply opening.

本计画旨在建立防排烟口在增压时防逆流的设计方法，并利用金泽工业大学一间大小相同的两室（W3000 × D3000 × H2200 mm）实验室进行实验。一个房间被视为送风房间，另一个房间被视为非送风房间，如走廊。利用三维超声波风速仪对送风房间防排烟口进行了25个点的测量。金字塔形的纸物体被放置在供应口的前面。通过改变倾斜角度和从物体基部到供给开口面的距离来进行一系列测量。研究结果也得到了计算流体力学的证实。实验结果与仿真结果基本一致。(1)送风喷口最好指向侧墙，以在防排烟口处形成均匀的气流分布。(2)在距物体底部100mm处，倾斜角为0度时，防烟口处的反向流动有减少的趋势，几乎像平面一样。(3)供气口的大小最好与供气口前障碍物的大小相等。

项目成果

Development of Design Method to Prevent Reverse Flow at Smoke Protect Opening in Pressurization Part. 2 Relation of airflow direction from supply air opening and reverse flow

增压部分防烟口防逆流设计方法的开发。

• 发表时间: 2007
• 作者: Yasuhiro Hamada;Makoto Nakamura;Hideki Kubota;Shinichiro NAGANO
• 通讯作者: Shinichiro NAGANO

Development of Design Method to Prevent Reverse Flow at Smoke Protect Opening in Pressurization Part.1 Study on Supply Opening Position and Direction

增压防烟口防逆流设计方法的发展第1部分：供给口位置和方向的研究

• 发表时间: 2006
• 作者: 濱田靖弘;窪田英樹;中村真人ら;Shinichiro NAGANO
• 通讯作者: Shinichiro NAGANO

遮煙開口部の逆流防止設計手法の開発 その4 給気口の遮風板形状と吹出し気流分布

挡烟口防倒流设计方法开发第4部分：送风口挡风板形状及出口气流分布

• 发表时间: 2008
• 作者: 永野;林;永野 紳一郎
• 通讯作者: 永野 紳一郎

加圧排煙時の遮煙開口部の逆流防止設計手法の開発 その1 吹出し方向の検討

加压排烟时防止排烟口回流的设计方法的开发 第 1 部分 吹出方向的考虑

• 发表时间: 2006
• 作者: 麓 耕二;濱田靖弘ら;麓 耕二ら;Shinichiro NAGANO;永野 紳一郎
• 通讯作者: 永野 紳一郎

加圧排煙時の遮煙開口部の逆流防止設計手法の開発その2 給気の吹出し方向の実験とシミュレーション

加压排烟时挡烟罩开口防回流设计方法的开发，第2部分送风吹出方向的实验与模拟

• 发表时间: 2007
• 作者: 柏原夕希子;荒木 肇;ら;永野紳一郎
• 通讯作者: 永野紳一郎