Heizertrag

Heizertrag is a German term that translates to "heating yield" or "heat gain." It is commonly used in the context of energy efficiency and building physics to describe the amount of heat that is retained or generated within a building. This can come from various sources, including solar radiation entering through windows, heat generated by occupants, and heat from appliances and lighting.

Understanding Heizertrag is crucial for designing energy-efficient buildings. A higher Heizertrag can reduce the need for active heating systems, thereby lowering energy consumption and costs. Conversely, excessive Heizertrag, particularly during warmer months, can lead to overheating and discomfort, necessitating increased cooling.

Factors influencing Heizertrag include the building's orientation, window size and type, insulation levels, and the thermal mass of its construction materials. Building codes and energy performance standards often consider Heizertrag when setting requirements for new constructions and renovations. Architects and engineers utilize heating and cooling load calculations that incorporate the concept of Heizertrag to optimize building design for thermal comfort and energy savings. The goal is to balance the beneficial aspects of Heizertrag with the potential for overheating.