Differences

This shows you the differences between two versions of the page.

--- basics:building_physics_-_basics:thermal_bridges:thermal_bridge_definition [2016/08/16 13:02] – [Requirements] mschueren
+++ basics:building_physics_-_basics:thermal_bridges:thermal_bridge_definition [2020/09/12 17:25] – [Effect on the building structure] wfeist
@@ Line 1: / Line 1: @@
 ===== Definition and effects of thermal bridges =====
-===== Thermal bridges =====
+===== Thermal bridges - Introduction =====
-===== Introduction =====
 Heat makes its way from the heated space towards the outside.  In doing so, it follows the path of least resistance. \\ A **thermal bridge** is a localised area of the building envelope where the heat flow is different (usually increased) in comparison with adjacent areas (if there is a difference in temperature between the inside and the outside).
@@ Line 8: / Line 7: @@
     * **Altered**, usually decreased, interior **surface temperatures**; in the worst case this can lead to moisture penetration in building components and mould growth.
     * **Altered**, usually increased, **heat losses**.\\
 \\
@@ Line 81: / Line 81: @@
 ==== Effect on the building structure ====
-[{{ :picprivate:corner.png?nolink&200|Mould in a corner of the building}}]
+[{{ :picprivate:corner.png?nolink&200|Mould in a corner; this is caused by the thermal bridge - we won't allow for such bad design in a passive house, so we won't have that}}]
 Unlike with regular building components, at thermal bridges the heat flow density changes and usually results in a reduction in the surface temperature on the inside in that area. This effect is more pronounced because air circulation in corners and edges is restricted. Cupboards and other furniture not only disrupt convection but also restrict radiant exchange with the surroundings. Because the water vapour content of the air depends on its temperature, condensation may form on the affected areas.