主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (9): 1241-1245.

• • 上一篇    下一篇

延迟启动对玻璃幕墙防护冷却水幕有效性影响研究

邵光正   

  1. （深圳市城市公共安全技术研究院有限公司消防安全研究所，广东 深圳 518046）
  • 出版日期:2023-09-15 发布日期:2023-09-15
  • 作者简介:邵光正（1990- ），男，山东临沂人，深圳市城市公共安全技术研究院有限公司注册安全工程师，一级消防工程师，硕士，主要从事消防工程、公共安全和应急管理研究，广东省深圳市福田区福华一路大中华国际交易广场11楼，518046。
  • 基金资助:
    国家重点研发计划项目（2019YFC0810700）；广东省重点领域研发计划项目（2019B111102002）

Analysis of the influence and countermeasure of starting temperature on the effectiveness of glass curtain wall protection cooling water curtain

Shao Guangzheng   

  1. (Fire Safety Institute, Shenzhen Urban Public Safety and Technology Institute Co., Ltd., Guangdong Shenzhen 518046, China)
  • Online:2023-09-15 Published:2023-09-15

摘要： 火灾初期防护冷却水幕可以对玻璃幕墙起到良好的保护作用，但是如果水幕延迟启动，在冷却水的瞬间作用下，受热玻璃可能会加速破裂脱落。文章试验验证了钢化玻璃和低辐射玻璃能够承受水幕保护的临界温度范围：不启动水幕的对照组中，6 mm钢化玻璃直至燃料燃尽，玻璃最高温度超过400 ℃均未发生破裂，但是玻璃温度超过250 ℃时开启水幕会加速其破裂；6 mm 低辐射玻璃温度超过70 ℃后同样不再适合用水幕直接降温冷却。在该临界温度以内及时启动水幕可以起到很好的防护冷却效果，但是超过该临界温度则应该采取其他措施。基于以上研究结论，提出对相关标准修订、工程应用及喷淋产品改进方面的对策和建议。

关键词: 玻璃幕墙, 防护冷却水幕, 防火分隔, 临界温度

Abstract: The protective cooling water curtain can play a good role in protecting the glass curtain wall at the initial stage of fire. However, if the water curtain is delayed to start, the heated glass may be accelerated to crack and fall off under the instantaneous action of cooling water. The experiment verified that the tempered glass and low-radiation (Low-E) glass can withstand the critical temperature range of the water curtain protection: in the control group without starting the water curtain, the tempered glass of 6 mm did not break until the fuel burned out, the highest temperature of the glass over 400 ℃, but the glass temperature over 250 ℃ opening the water curtain will accelerate its rupture; 6 mm low-E glass temperature over 70 ℃ after the same is no longer suitable for direct cooling with water curtain cooling. Starting the water curtain in time within the critical temperature can play a good protective cooling effect, but beyond the critical temperature, other measures should be taken. Based on the above research conclusions, the countermeasures and suggestions on the revision of relevant standards, engineering application and improvement of spray products are put forward.

Key words: Key words: glass curtain wall, protective cooling water curtain, fire separation, critical temperature