There are three types of cooling systems for outdoor advertising machines on the market today:
1. Fan cooling system
2. Air-conditioning cooling system
3. Heat exchanger cooling system
The fan cooling system for digital signage is one of the most widely used methods, alternating the hot and cool air and realizing temperature reduction with speed fans.
Its advantages are lower power consumption and labor costs for future operations. However, its IP rating is only up to IP55 and needs frequent cleaning of the filter and checks of the operation of the speed control fan.
The internal hot air of the machine can be vented with the help of the gasification and liquefaction of the refrigerant in the compressor.
Digital signage with an AC cooling system can be completely isolated from the outside environment with IP65 rating protection. It is more suitable for harsh environments such as excessively high or low ambient temperatures. At the same time, though, the cost and power consumption will be higher than the one with a fan cooling system. For safety reasons, the refrigerant required for air conditioners cannot be transported with the machine. Therefore, an extra process of adding refrigerant will be needed after transporting the machine to the designated location.
Digital signage with heat exchanger consists of fans and finned tube radiator. The fans balance the internal temperature and bring the heat to the finned tube radiator. The high thermal conductivity power of the finned tube radiator reduces the internal temperature. External air access to the radiator via specific air channels and continuing the inner air circulation aided by the second array of fans, realizing the heat exchange of the hot and cool air.
Because of the no-filter design, the enclosure will be completely sealed and can reach the IP rating of IP66. It ensures low power consumption and low future maintenance costs. Meanwhile, its cooling effect may be inferior to fan cooling, and thermal conduction can only happen when the internal and external temperature difference is no lower than 15℃. It is more applicable in regions with suitable climates.
Uniview Commerical Display is a professional global manufacturer and supplier of LCD digital signage. We are known for both superior product quality and flexible customized service. The most appropriate is the best. We are proud of our consultative services and devote ourselves to offering the most suitable solution based on every client’s needs and situations, such as the selection of heat dissipation. You are welcome to explore further via our official website.
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