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Case Study
What cooling solutions can cool heat-generating 5G telecommunications equipment?

What is a Centrifugal Fan that achieved better cooling performance with fewer fans?

Telecommunications Equipment Manufacturer Company C (200 Employees)
Problem
  • 5G communication equipment generates a large amount of heat and requires higher cooling performance than conventional.
  • Required to reduce the number of fans and improve the cooling performance at the same time.
  • Corrosion protection for fan PCB was required.
Solution and Results
  • Proposed a Centrifugal Fan with the industry's highest airflow and static pressure.
  • Two Centrifugal Fans outperformed four conventional fans.
  • Customized the PCB with a moisture-proof material to prevent corrosion.
The 5th-generation (5G) networks have been attracting attention as the next generation communication standard. While 5G networks enable faster and higher-capacity communication than the conventional 4G, the communication equipment that supports them has been generating much more heat due to the enormous amount of information processing, which requires a more efficient cooling system than before.

Problem

Reduction in the number of fans and improvement in the cooling performance were required for the cooling of 5G communication equipment

Company C, a telecommunications equipment manufacturer, had worked to improve the telecommunications environment in South Asia. They had started to develop IT infrastructure that could support 5G networks, which was expected to spread in the future. 5G networks surely enable faster and higher-capacity communication, but the advanced information processing generates much more heat than before, raising the need for a new better cooling system. Mr. F, manager of the development department at the company, explains:

"In Asia and Africa, there are still many 3G equipment used, so we have pushed the replacement of them with 4G and 5G compatible equipment. The conventional 3G compatible equipment had used four axial fans inside, but since 5G compatible equipment would generates more heat, a more powerful cooling system was needed. To make things worse, our superiors demanded that the number of fans be reduced to comply with our component reduction initiative. Furthermore, since telecommunications equipment is installed and used outdoors, we also had to consider measures to protect fan PCB from corrosion. So in short, we had a number of challenges to solve and were in a very difficult position."

Finding a cooling fan that could solve these problems was now his top priority.

Solution and Results

By using a Centrifugal Fan, the number of fans was reduced from four to two

Centrifugal Fan Structure
▲ Centrifugal Fan Structure

Seeking a cooling solution for the higher heat generation, Mr. F consulted SANYO DENKI, with which Company C had previously dealt in another department, about his problems and they proposed their Centrifugal Fan.

"Two of our Centrifugal Fans would be able to provide sufficient cooling, they said," explained Mr. F. "Honestly, we were skeptical at first. Nevertheless, it sounded appealing to us and boosted our expectations. That idea came as a bit of surprise, because the idea of using a centrifugal fan to replace an axial fan never occurred to our development team. But it turned out that their Centrifugal Fan featured both high airflow and high static pressure, and was actually an ideal fan for cooling large and high-density equipment, including telecommunications equipment and servers."

Centrifugal Fan Structure
▲ Centrifugal Fan Structure

Technical support was provided in customizing corrosion protection

Upon request from Mr. F, SANYO DENKI immediately provided samples for evaluation, and Company C confirmed that the cooling requirements could actually be met with two of their fans as proposed.

"In addition, SANYO DENKI's fan designers provided technical support to solve other issues," he continued. "The corrosion of fan PCB was one of our concerns, and they solved it by applying the coating of moisture-resistant material to PCB. What's more, they also provided lead wire extensions and voltage range expansion. I really appreciate their detailed technical services."

Company C was satisfied with these extensive customization services and technical support, and soon decided to officially adopt the proposed fan.

"We had never thought of using a centrifugal fan until proposed, and it opened our eyes to new possibilities. SANYO DENKI understood our requirements well and provided us with the best solution possible. I would definitely like to consult with them again in the future," he concluded with a big smile.

Date of publication: April 19, 2021

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