BS EN 15026-2007 建筑物构件和建筑物元件的温湿性能.用数值模拟评定潮气传递

标准号：BS EN 15026-2007
中文标准名称：建筑物构件和建筑物元件的温湿性能.用数值模拟评定潮气传递
英文标准名称：Hygrothermal performance of building components and building elements - Assessment of moisture transfer by numerical simulation
标准类型：Q70
发布日期：2007/8/31 12:00:00
实施日期：2007/8/31 12:00:00
中国标准分类号：Q70
国际标准分类号：91.120.01
引用标准：EN 12664;EN 12667;EN 12939;EN ISO 7345;prEN ISO 9346-2005;prEN ISO 10456;EN ISO 12571;EN ISO 12572;prEN ISO 15927-3
适用范围：This standard specifies the equations to be used in a simulation method for calculating the non steady transferof heat and moisture through building structures.It also provides a benchmark example intended to be used for validating a simulation method claimingconformity with this standard, together with the allowed tolerances.The equations in this standard take account of the following storage and one-dimensional transportphenomena:• heat storage in dry building materials and absorbed water;• heat transport by moisture-dependent thermal conduction;• latent heat transfer by vapour diffusion;• moisture storage by vapour sorption and capillary forces;• moisture transport by vapour diffusion;• moisture transport by liquid transport (surface diffusion and capillary flow).The equations described in this standard account for the following climatic variables:• internal and external temperature;• internal and external humidity;• solar and longwave radiation;• precipitation (normal and driving rain);• wind speed and direction.The hygrothermal equations described in this standard shall not be applied in cases where:• convection takes place through holes and cracks;• two-dimensional effects play an important part (e.g. rising damp, conditions around thermal bridges,effect of gravitational forces);• hydraulic, osmotic, electrophoretic forces are present;• daily mean temperatures in the component exceed 50 °C.