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澳门正版内部资料大公开铁皮风管加工:铁皮风管隔热性要求是否必要?

发布人:   发布时间:2024-05-13 15:59:11

  铁皮风管隔热性要求是否必要?

Is the insulation requirement for iron sheet air ducts necessary?

  其实在耐火极限一词的解释中是这样描述的:本条术语解释中的“标准耐火试验条件”是指符合标准规定的耐火试验条件。

In fact, in the interpretation of the term "fire resistance limit", it is described as follows: "Standard fire resistance test conditions" in this terminology interpretation refer to fire resistance test conditions that comply with national standards.

  对于升温条件,不同使用性质和功能的建筑,火灾类型可能不同,因而在建筑构配件的标准耐火性能测定过程中,受火条件也有所不同,需要根据实际的火灾类型确定不同标准的升温条件。

For buildings with different usage properties and functions under different heating conditions, the type of fire may vary. Therefore, in the process of measuring the standard fire resistance performance of building components, the fire conditions may also vary. It is necessary to determine different standard heating conditions based on the actual fire type.

  目前,我国对于以纤维类火灾为主的建筑构件耐火试验主要参照国际标准化组织834标准规定的时间-温度标准曲线进行试验;对于石油化工建筑、通行大型车辆的隧道等以烃类为主的场所,结构的耐火极限需采用碳氢时间-温度曲线等相适应的升温曲线进行试验测定。对于不同类型的建筑构件,耐火极限的判定标准也不一样,比如非承重墙体,其耐火极限测定主要考察该墙体在试验条件下的完整性能和隔热性能;而柱的耐火极限测定则主要考察其在试验条件下的承载力和稳定性能。

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At present, China mainly refers to the time temperature standard curve specified in the International Organization for Standardization 834 standard for the fire resistance test of building components mainly caused by fiber fires; For places mainly composed of hydrocarbons such as petrochemical buildings and tunnels for large vehicles, the fire resistance limit of the structure needs to be tested and determined using temperature rise curves that are suitable for hydrocarbon time temperature curves. For different types of building components, the criteria for determining the fire resistance limit are also different. For example, for non load-bearing walls, the determination of their fire resistance limit mainly examines the integrity and insulation performance of the wall under test conditions; The determination of the fire resistance limit of the column mainly examines its bearing capacity and stability performance under experimental conditions.

  因此,对于不同的建筑结构或构、配件,耐火极限的判定标准和所代表的含义也不完全一致,详见现行标准《建筑构件耐火试验方法》系列。而隔热性要求主要适应于建(构)造物分隔件。所以个人认为当铁皮风管的完整性能可以达到要求后,系统的功能就可以满足设计要求了。

Therefore, for different building structures or components, the criteria for determining the fire resistance limit and the meaning it represents are not completely consistent. Please refer to the current national standard "Fire resistance test methods for building components" series for details. The insulation requirements mainly apply to building (structure) partitions. So I personally believe that when the complete performance of the iron sheet air duct can meet the requirements, the system's functions can meet the design requirements.

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