共查询到19条相似文献,搜索用时 377 毫秒
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地下商场暖通设计的几点体会 总被引:3,自引:0,他引:3
自1987年设计哈尔滨南岗奋斗路全国第一条地下商业街以来,笔者又陆续设计了哈市东西大直街、火车站站前广场、道里等面积均在1万m2以上的大型地下商场,取得了一些地下商场通风、空调、防排烟等方面的设计经验,可供地下商场通风设计参考借鉴。1利用冷水机组冷却... 相似文献
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地下汽车库通风与防排烟设计的探讨 总被引:2,自引:0,他引:2
介绍了地下汽车库通风与防排烟设计 ,讨论了地下汽车库排风量、排烟量的计算和地下汽车库通风系统的模式 ,指出了在地下汽车库通风排烟设计上的注意事项 相似文献
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本文根据地下商场发生火灾时具有蔓延快、人员伤亡和财产损失严重、以及扑救困难等特点,阐述了地下商场进行防烟排烟设计时应注意的事项,为设计者提供一定的参考。 相似文献
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地下商场防排烟设计补风方案研究 总被引:1,自引:2,他引:1
以某地下商场防排烟设计为例,探讨补风方案对防排烟效果的影响。结果表明了地下建筑防排烟设计的重要性,其中补风方案会对实际排烟效果产生显著的影响。 相似文献
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公路隧道射流风机与竖(斜)井排出式组合通风排烟设计及控制方案研究 总被引:1,自引:0,他引:1
针对公路隧道射流风机与竖(斜)井排出式组合通风排烟方式建立系统设计理论计算模型,分析不同工况下的通风排烟控制方案要求及影响因素,并进行实例分析,以便为该组合通风排烟方式的系统及通风排烟控制方案设计提供参考. 相似文献
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介绍了该工程的空调、通风、防排烟及自控系统设计。提出博物馆类建筑,因其展厅的开窗面积少,应考虑常年通风。设置排风系统代替过度季节开启空调机,具有明显的节能效果;为了确保参观者的安全,在展厅、报告厅、影像厅、中庭等处均应设置机械排烟及机械补风系统。 相似文献
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介绍了地下网吧消防排烟系统的设计。消防排烟系统与日常排风系统合用设置,排烟口兼作排风口;消防补风系统与日常送风系统合用设置;平时,排烟系统、补风系统作日常通风换气使用,火灾时,则自动切换为消防排烟方式运行。 相似文献
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阐明了高层民用建筑地下汽车库的平时送排风系统、消防排烟及排烟补风系统和战时人防通风系统的设置及技术分析,介绍了多个系统合用时的典型设计,分析了防火及防排烟阀的主要特征、功能及适用场合,提出高层民用建筑地下汽车库的通风系统是否合用应根据具体工程情况确定,尽量减化通风系统。 相似文献
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To cope with fires in a subway station, ventilation systems are usually installed, which includes an air supply system and a smoke exhaust system. In case of a train fire, the operation of these ventilation systems needs to be studied in order to get optimal control of smoke propagation and provide better environmental conditions for personnel evacuation. In this paper, CFD simulations are carried out by Fire Dynamics Simulator (FDS) to study the effectiveness of different ventilation modes in case of a train fire in a subway station. The temperature and visibility contours are computed as to compare the performance of various ventilation modes for subway stations with full-seal Platform Screen Door (PSD) or half-height safety door. Results show that appropriate activation of the air supply system can improve the efficiency of the ventilation system in smoke control, and vice versa. It is better to activate the lobby air supply system and meanwhile close the platform air supply system. As for the exhaust system, it is necessary to activate the platform exhaust system and the Over Track Exhaust (OTE) system, and it is better to deactivate the Under Platform Exhaust (UPE) system. The optimization strategy of the ventilation mode for subway stations with full-seal PSD is similar to that for subway stations with half-height safety door. With the help of the additional smoke barrier, smoke propagation in a subway station can be well controlled. The results in the paper may serve as a useful reference for the smoke control design in case of subway train fires. 相似文献
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Longhua Hu Long Wu Kaihua Lu Xiaochun Zhang Shuai Liu Zengwei Qiu 《Building Simulation》2014,7(2):137-146
This paper presents a computational fluid dynamics (CFD) simulation investigation of most effective cooperative operation mode of the tunnel rail track area exhaust system and the platform ventilation system for the emergency scenario of a train on fire stopping beside the platform of a subway station. CFD simulations are carried out by fire dynamics simulator (FDS) to analyse and compare the computed field distributions of smoke temperature and visibility, as to find out the most optimal cooperation mode of these ventilation systems. Results show that only starting the over track exhaust (OTE) system can control the smoke more effectively than starting both the OTE system and the under platform exhaust (UPE) system at the same time. In addition, setting the platform ventilation system as exhaust pattern can provide better control performance than setting it as air supply pattern, in counteracting the smoke flowed into the platform from the fire train. Therefore, it is found out and suggested that in such an emergency condition, the most effective strategic cooperative ventilation mode is only starting the OTE system of the tunnel rail track area with the aid of activation the smoke exhaust pattern of the platform ventilation system. 相似文献
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运用FDS对某地铁车站站厅层火灾工况下的排烟和补风效果进行模拟。模拟结果表明,依照规范设计的排烟系统能够满足烟气蔓延范围控制和楼扶梯口下行风速的要求;单侧补风导致烟气滞留现象较为严重,不能保证起火站厅层人员疏散的安全性。针对模拟结果进行优化补风设计,通过优化补风口的位置,使站厅层形成双向补风,提高了站厅层的排烟效率。建议在楼扶梯口位置不能保证地铁车站有效补风的情况下,在补风盲区增设机械或者自然补风系统。 相似文献
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本文分析了地下汽车库机械排烟与排风系统合用的可行性,结合实际工程介绍常见的设计方式,并阐述了地下汽车库机械排烟与排风系统合用的设计依据及注意事项。 相似文献