ISO 15758:2004 建筑物设备和工业装置的温湿性能.水蒸气扩散的计算.冷管绝缘系统

标准编号：ISO 15758:2004

中文名称：建筑物设备和工业装置的温湿性能.水蒸气扩散的计算.冷管绝缘系统

英文名称：Hygrothermal performance of building equipment and industrial installations — Calculation of water vapour diffusion — Cold pipe insulation systems

发布日期：2004-10

标准范围

ISO 15758:2004规定了一种计算冷管保温系统中水蒸气流速密度的方法，以及随时间扩散到保温层中的水总量。这种计算方法假定水蒸气只能通过扩散进入隔热系统，而不受气流的影响。它还假设使用均匀、各向同性的绝缘材料，以便在距离管道轴线等距的所有点处，水蒸汽分压保持恒定。当管道中的介质温度高于0°C时，ISO 15758:2004适用。它适用于建筑物内以及露天的管道。

ISO 15758:2004 specifies a method to calculate the density of water vapour flow rate in cold pipe insulation systems, and the total amount of water diffused into the insulation over time. This calculation method presupposes that water vapour can only migrate into the insulation system by diffusion, with no contribution from airflow. It also assumes the use of homogeneous, isotropic insulation materials so that the water vapour partial pressure is constant at all points equidistant from the axis of the pipe.ISO 15758:2004 is applicable when the temperature of the medium in the pipe is above 0 °C. It applies to pipes inside buildings as well as in the open air.

标准预览图