This system canwork in three modes determined by the outdoor
temperature. In cold weather it works in thermosyphon mode, only
the fans of three-fluid heat exchanger and evaporator work to cool
the data center using natural cold source of air. The working fluid in
the thermosyphon absorbs heat and vaporizes in the evaporator,
condenses in the three-fluid heat exchanger and then flows back to
the evaporator under gravity. In hotweather itworks in refrigeration