säätökäyrän

A säätökäyrä, often translated as a control curve or regulation curve, is a graphical representation used in various control systems to define the relationship between an input variable and a desired output variable. It essentially dictates how a system should respond to different conditions.

In building automation and HVAC systems, a säätökäyrä is commonly used to regulate heating or cooling. For instance, a heating control curve might plot the outdoor temperature against the desired supply water temperature for a heating system. As the outdoor temperature drops, the curve dictates that the supply water temperature should increase to maintain a comfortable indoor environment. Conversely, a cooling control curve would show a decreasing supply air temperature as the outdoor temperature rises.

The shape of the säätökäyrä is crucial for efficient and effective system operation. It is typically determined based on the building's thermal characteristics, desired indoor climate setpoints, and energy efficiency considerations. Adjusting the slope and offset of the curve allows for fine-tuning the system's response to changing external factors without requiring constant manual intervention.

Beyond building systems, säätökäyrät can be found in industrial process control, automotive engine management, and other fields where a predefined, often non-linear, relationship between measured parameters and system output is necessary for optimal performance and stability.