Application of two-phase thermosyphon loop to HVAC field: A review

 As a high-efficiency heat transfer equipment, the two-phase thermosyphon loop (TPTL) is widely used in the field of HVAC, and has the advantages of low manufacturing and maintenance costs, high reliability, good heat transfer performance, and strong applicability. This paper summarizes the application status of TPTL in the field of HVAC, presents the research on TPTL at home and abroad from three application scenarios of data centers and base stations, waste heat recovery and solar energy systems, objectively evaluates the main achievements and shortcomings of the current research work, and gives an outlook on the development direction of the future research on TPTL. This review will help researchers and engineering technicians to understand the development and application of TPTL, and promote the development of heat pipe technology.