ReferenzAußentemperaturen

ReferenzAußentemperaturen, which translates to reference outdoor temperatures, are specific values used in technical contexts, particularly in building services and heating, ventilation, and air conditioning (HVAC) systems. These temperatures represent typical or critical external weather conditions that are assumed for the design, testing, and operational optimization of building systems.

The most common reference outdoor temperature is the "design outdoor temperature." This value is usually the minimum temperature expected for a certain statistical probability during the winter heating season or the maximum temperature expected during the summer cooling season. For example, a heating system might be designed to maintain a comfortable indoor temperature when the outdoor temperature drops to -10 degrees Celsius, a value that is exceeded only a few times per year.

These reference temperatures are crucial for calculating heating and cooling loads, sizing equipment such as boilers, chillers, and air handling units, and ensuring that a building's thermal comfort can be maintained under expected extreme weather conditions. They are often derived from historical meteorological data and specified in building codes, standards, and technical guidelines.

Beyond design, reference outdoor temperatures are also used for performance testing and system commissioning. By simulating or observing system behavior at these defined external conditions, engineers can verify that the HVAC system operates as intended and efficiently. Furthermore, in building automation systems, reference temperatures can be used as setpoints for control strategies, influencing how heating or cooling is activated or adjusted.