More and more outdoor cabinet sites have put forward higher requirements for reliability and energy saving. Envicool has launched hybrid cooling, which integrates two independent refrigeration systems, and has a unified control part to coordinate the actions of the two systems. . The two systems can back up each other, greatly improving the reliability of the system. At the same time, the heat pipe system is used to achieve energy saving when the outdoor temperature is low, and the air conditioner works to control the temperature when the outdoor temperature is high, so as to achieve the purpose of energy saving and consumption reduction.