This study presents how a parametric digital twin was developed for Löfstad Castle in Sweden to support heritage preservation. Researchers installed 13 sensor boxes with 84 sensors throughout the building to monitor indoor climate conditions continuously. Using the collected data, they created a digital model — a digital twin — that allows detailed analysis of temperature, humidity, and energy flows. The results identify problems (e.g. high humidity in the basement) and suggest interventions (vapor barriers, optimized heating/ventilation). While focused on Löfstad, the methodology offers a model for managing interior climate in historic buildings elsewhere.
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