Use of Mixed Reality in HVAC System Equipment Fault Detection and Diagnosis Method

In the traditional building HVAC system equipment operation and maintenance process, some of the HVAC system equipment installation locations are hidden in the building space, so many HVAC equipment repair and maintenance operations have limited maintenance space and low visualization, and the building air conditioning system fault diagnosis process is often plagued by on-site work collaboration factors resulting in low fault repair efficiency. Based on the above problems, this paper proposes to superimpose Mixed Reality (MR) technology on top of the Building Information Model (BIM) to develop a BIM+MR-based building HVAC system equipment fault diagnosis system to improve the immersive and remote visualization interaction capability in the HVAC system equipment maintenance process through the digital twin technology. The BIM+MR fault diagnosis system is developed to improve the immersive and remote visualization interaction capability in the HVAC system equipment maintenance process using digital twin technology. The technical verification shows that the efficiency of HVAC’s air conditioning equipment fault diagnosis in the pilot project has increased by 1.88 times after applying MR technology.