標準號：DIN EN 15026-2007
中文標準名稱：建筑物構件和組件的溫濕性能.用數值模擬評估水分傳遞
英文標準名稱：Hygrothermal performance of building components and building elements - Assessment of moisture transfer by numerical simulation; German version EN 15026:2007
標準類型：P31
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：P31
國際標準分類號：91.120.01
引用標準：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
適用范圍：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 Iongwave 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 ℃.