标准摘要
[中文适用范围]： 本文件适用于自然排烟排热通风机（NSHEV）的设计和安装，该通风机适用于单层建筑通过屋顶通过热浮力垂直排烟的空间，以及多层建筑通过最上层排烟的空间。 - 层高的建筑物。 它也适用于在外墙上安装 NSHEV 的空间。 本文件包括透明层设计的表格和计算方法，以满足各种保护目标的要求。 本文件包括应用本文规定的设计规则和安装 NSHEV 时应考虑的信息和规定。 [外文原描述]： This document applies to the design and installation of natural smoke and heat exhaust ventilators (NSHEVs) for spaces from which smoke is extracted vertically by thermal buoyancy via the roof in the case of single-storey buildings and via the uppermost storey in the case of multi-storey buildings. It also applies to spaces in which NSHEVs are installed in external walls. This document includes tables and calculation methods for the design of clear layers in order to comply with the requirements of various protection objectives. This document includes information and provisions to be taken into account when applying the design rules set out herein and when installing NSHEVs.
英文名称Smoke and heat control systems — Part 4: Natural smoke and heat exhaust ventilators — Design, requirements and installation