Exploration of construction of a VRF building digital twin management platform based on operation energy saving and comfort

At present, the building industry in China faces problems such as extensive management and a low degree of intelligence, which are the key factors restricting the realization of carbon neutrality in the building sector. With the development of information technology, digital twin technology can play an important role in solving these problems. Compared with building information modeling (BIM) technology, the digital twin technology can reflect the dynamic information of the physical world more comprehensively and in real time, and through the synchronization of data and information, the physical entity can be comprehensively monitored, analysed and optimized, and the virtual and real combination can be realized. The variable refrigerant flow (VRF) system has the characteristics of high integration and easy data collection. It can realize operation energy saving and fault diagnosis through data analysis and is suitable for using digital twin technology to reduce building carbon emissions and improve comfort. In this paper, a digital twin management platform is established for an office building with a VRF system in Guangdong, and the energy saving technology of intelligent operation is explored. The results show that this technology has a good effect on reducing the energy consumption and operation cost of the system.