BUILDING CONTROLS & TECHNOLOGY
customer in The Netherlands showed that the integration of silencers reduced sound power by up to 12dB(A) through their integration with a specific outdoor shelter, air conditioning unit and operating mode.
Cities are becoming ever more densely populated and new residential areas are constantly being developed. As a result, existing PoP stations might need to be retrofitted with noise protection equipment if they are located near a new residential area. Thinking ahead makes a great deal of strategic sense in this respect, as investing in noise protection solutions that are as future proof as possible can save significant time, money and effort over the medium- to long-term.
Effective sound insulation measures
To minimise the noise created by PoP and RAN base stations, the use of silencers is recommended. These can be mounted on the air inlets and outlets of shelter containers. A measurement carried out on behalf of a STULZ
This type of optimal configuration is effective to such an extent that stations are able to operate well below any statutory noise protection requirements and are hardly perceptible acoustically. Although measures such as these do mean higher capital expenditure in the short-term, they pay off in the long-term through flexible siting and the acceptance of expansion measures among residents. Even in existing areas that must comply with stricter limit values due to subsequent building densification, noise output can be effectively reduced by retrofitting silencers. In addition, the average total operating time of compressors, pumps and other components can be reduced in existing systems by retrofitting a free cooling module. Free cooling modules can be combined with air conditioning systems from various manufacturers, which not only reduces the overall system noise level but also saves energy costs related to cooling.
It makes sense to plan ahead
For modern telecommunications networks, the early integration of noise reduction technologies during the planning of PoP and RAN locations is essential, both operationally and economically. It acts as a strategic lever that reconciles technical feasibility, energy efficiency, future proofing and social responsibility. Those who focus exclusively on the minimum legal requirements when it comes to noise protection run the risk of having to carry out expensive retrofitting in the event of stricter noise protection legislation. Cutting edge solutions such as hybrid cooling systems with automated free cooling operation or
modular retrofittable silencers offer a decisive advantage, as they not only reduce noise emissions but also lower operating costs through efficient load distribution.
Work with a trusted partner
Companies such as STULZ can assist telecommunications providers by offering comprehensive solutions that cover everything from acoustic site analysis to the development of prototypical energy efficient shelter systems. This integrated approach not only focuses on noise reduction but also promotes sustainable infrastructure growth – an essential factor for maintaining regulatory compliance and achieving the long-term acceptance of PoP and RAN stations in densely populated neighbourhoods.
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Sep25.indd 1 24/4/25 10:29 2/6/25 11:55 BUILDING SERVICES & ENVIRONMENTAL ENGINEER JUNE 2025 7
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