Outdoor communication cabinet is a chassis cabinet "> a kind of outdoor cabinet, which is directly exposed to the natural environment, such as those installed on the roadside, park, roof, mountain area and flat ground. Base station equipment, power supply equipment, storage battery, temperature control equipment, transmission equipment and other supporting equipment can be installed in the outdoor cabinet, or installation space and heat exchange capacity can be reserved for the above equipment, A cabinet that can provide reliable mechanical and environmental protection for the normal operation of internal equipment. Equipment providing outdoor physical working environment and safety system for wireless communication station or wired network station workstation. This cabinet cannot be operated by non professional personnel to prevent accidents or equipment damage.

戶外通信機柜的內置設備很多，運行時會產生大量的熱量，所以該種機柜的散熱性能必須很，才能保證各種設備的正常運行。常用的散熱形式有兩種熱交換型和半導體型。

There are many built-in equipment in outdoor communication cabinet, which will generate a lot of heat during operation, so the heat dissipation performance of this kind of cabinet must be excellent to ensure the normal operation of various equipment. There are two common forms of heat dissipation: heat exchange type and semi conducting type.

熱交換型，采用熱交換器作為散熱設備的溫控元件，利用內外完全隔離的風道，通過相互隔絕的熱交換器芯傳遞熱量的散熱方式。熱交換器的選擇要根據戶外通信機柜內部設備的發熱量來選擇。

The heat exchange type adopts the heat exchanger as the temperature control element of the heat dissipation equipment, and uses the completely isolated air duct inside and outside to transfer heat through the isolated heat exchanger core. The heat exchanger shall be selected according to the heating capacity of the equipment inside the outdoor communication cabinet.

半導體型，采用半導體設備對戶外機柜艙內溫度進行主動制冷的一種方式，考慮室外惡劣條件應用，半導體無壓縮機的制冷方式有利于提供制冷系統的可靠性。該類恒溫戶外機柜在國內聯通、移動、電信運營商的集中采購中應用廣泛。

Semi conducting type is a way to actively cool the temperature in the outdoor cabinet cabin by using semiconductor equipment. Considering the application of outdoor harsh conditions, the refrigeration mode without semiconductor compressor is conducive to providing the reliability of the refrigeration system. This kind of thermostatic outdoor cabinet is widely used in the centralized procurement of domestic Unicom, China Mobile and telecom operators.

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