Zero-Energy Cooling, More Stable Base Stations – Case Record of China Tower, Dezhou

In communication base stations, air conditioners are veritable "electricity hogs." Day and night, through heat and cold, to ensure the normal operation of equipment, the air conditioner must run year-round – resulting in persistently high electricity bills.

In Dezhou, a base station of China Tower explored a new approach: instead of relying on more expensive air conditioners or complicated energy-saving strategies, they enabled the building itself to learn how to dissipate heat.

Pain point: Equipment unchanged, electricity bills rising.
The core problem for the base station is not the high outside temperature, but the accumulation of heat generated by the equipment itself, which has difficulty escaping. In the enclosed equipment room, heat builds up continuously, forcing the air conditioner to run under heavy load year-round. Traditional solutions either try to improve AC efficiency or optimise operation strategies – but they always remain trapped in the “cooling by electricity” cycle.

Solution: Radiative cooling coating + film – a new passive heat-dissipation concept.
In this retrofit, the Dezhou China Tower base station applied both radiative cooling coating and radiative cooling film:

This solution does not rely on electricity, and the principle is straightforward: it highly reflects sunlight while simultaneously emitting heat directly into outer space in the form of mid-infrared radiation. In simple terms, it transforms the base station from a “heat absorber” into a “heat dissipator” – reducing incoming heat from the outside while helping internal heat escape more quickly. The entire process uses no electricity, no water, and has no moving parts; it operates completely passively.

Results: Lower air-conditioning load, more stable equipment operation

Actual recorded data after the application show:
The external surface temperature of the base station is 8–10°C lower than that of an adjacent untreated site.
Heat buildup inside the equipment room is significantly reduced.
The air conditioner’s runtime and start-stop frequency drop noticeably.
The ambient temperature for the equipment becomes more stable, contributing to long-term reliable operation of the communication equipment.

Benefits: The dual value of energy saving and stability

Compared with traditional energy-saving retrofits, the radiative cooling solution offers unique advantages in base station scenarios:
Zero operating energy consumption – no ongoing electricity costs.
Maintenance-free – no moving parts, no extra maintenance burden.
Easy installation – spray coating and film application can be done without interrupting normal equipment operation.
Extended AC lifespan – reduced load leads to fewer breakdowns and less frequent replacements.

Base station stability begins with temperature stability. This case record from China Tower in Dezhou proves that effective heat dissipation for base stations is possible without plugging in. Radiative cooling coatings and films are becoming a noteworthy energy-saving aid in the field of communication infrastructure.