The isothermal curve is a graphical representation that is used to simulate the temperature distribution within a component or in the transition of different components to each other. Isotherms are lines that connect all points of the same temperature within components and thus represent the calculated temperature distribution within building structures. This method can also be used to examine window-wall connections with the help of computers, and manufacturers often offer the creation as a service.
When evaluating the isothermal curve, the course of the 10° curve is considered in particular, since at an assumed room temperature of 20°C and a relative humidity of 50%, condensation occurs when the air on a component surface cools below 9.3°C. If the 10° isothermal is located in the component at a window connection, no condensation is to be expected. However, if it runs outside the components in the room, condensation is to be expected, and the installation situation must be replanned.
Image: Isothermal curve (example) - bauwion
Source: bauwion
