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.

户外通信机柜的内置设备很多，运行时会产生大量的热量，所以该种机柜的散热性能必须很，才能保证各种设备的正常运行。常用的散热形式有两种热交换型和半导体型。

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.

热交换型，采用热交换器作为散热设备的温控元件，利用内外完全隔离的风道，通过相互隔绝的热交换器芯传递热量的散热方式。热交换器的选择要根据户外通信机柜内部设备的发热量来选择。

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.

半导体型，采用半导体设备对户外机柜舱内温度进行主动制冷的一种方式，考虑室外恶劣条件应用，半导体无压缩机的制冷方式有利于提供制冷系统的可靠性。该类恒温户外机柜在国内联通、移动、电信运营商的集中采购中应用广泛。

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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