CAJ | 학술논문

基于竖井的烟囱效应原理，利用小尺寸实验台开展了一系列实验，通过改变油盘的尺寸，对竖井内的烟气温度、压力、速度以及通风口处的压力、气流速度进行测量，研究了火源功率对房间利用竖井进行负压控烟效果的影响。实验结果表明：一方面随着火源功率的增大，室内温度升高，热烟气形成的热压增大，使烟气向外膨胀；另一方面，竖井底部的烟气温度升高，竖井底部的负压值增大，烟囱效应增强，排烟速度增大，新鲜空气补入的速度增大，逐渐抑制住烟气从通风口向外溢出，达到了负压控烟的效果。
기우수정적연창효응원리，이용소척촌실험태개전료일계렬실험，통과개변유반적척촌，대수정내적연기온도、압력、속도이급통풍구처적압력、기류속도진행측량，연구료화원공솔대방간이용수정진행부압공연효과적영향。실험결과표명：일방면수착화원공솔적증대，실내온도승고，열연기형성적열압증대，사연기향외팽창；령일방면，수정저부적연기온도승고，수정저부적부압치증대，연창효응증강，배연속도증대，신선공기보입적속도증대，축점억제주연기종통풍구향외일출，체도료부압공연적효과。
Based on the principle of stack effect,a set of experiments were carried out by varying the pool size in a small scaled configuration,and the effect of the fire power on smoke control in the room using a shaft was studied.The temperature, pressure,velocity in the shaft,as well as the pressure and velocity in the vent were measured and studied.Results showed that with the increase of fire power,the temperature in the room and the pressure produced by hot smoke increased,making the smoke expands outward.On the other hand,the temperature and the negative pressure at the bottom of shaft increased,with enhancement of stack effect,and the increase of the smoke velocity and the velocity in the vent,inhabiting the smoke overflow from the fire room gradually.By these effects,the smoke can be successfully controlled by negative pressure.