Fan and ice creams, what is this tip really worth refreshing a room?

Accumulator position: behind the fan

During a first test, the ice blocks were installed at the back of the device. After an hour of continuous operation, the ambient temperature has practically not evolved: only 0.2 ° C of difference, a negligible gap which can be explained by external fluctuations.

Our analysis: the fan, by sucking the ambient air, fails to effectively capture the cold located behind it. Thermal diffusion therefore remains unchanged.

Ice breads placed in front of the fan: first notable effects

In a second configuration, the ice breads are positioned directly in front of the fan, up to its flow. This time, the results are evolving. The probe placed at 1 meter opposite the device records a drop in temperature of 0.7 ° C, while those located out of the flow are a modest variation of 0.6 ° C.

Our analysis: by blowing directly on a cold source, the fan manages to diffuse a feeling of perceptible, although localized. The effect is limited to the area directly exposed to air flow.

Reduction of ventilation speed: amplified thermal gain

In order to optimize the restitution of the cold, a final series of measurements is carried out at minimum speed. This choice aims to reduce the engine warm -up and more concentrate the air flow on the cold source. The probes record a drop from 1.8 ° C to 2.2 ° C, still in the area opposite the fan. The impact on the room temperature remains low, but the thermal feeling improves clearly.

Our analysis: at low speed, ventilation causes a more homogeneous diffusion of cold over a short distance, which improves the subjective efficiency of the device.

An improvement in thermal comfort, without real drop in room temperature

It is essential to recall that a fan does not cool the air, it is content to set it in motion. Nevertheless, combined with a localized cold source – here, ice breads – it allows you to create a refreshing air current, perceptible by the human body. If the overall temperature of the room remains almost unchanged, the feeling of freshness increases significantly, especially in the event of hot weather.

This test was published in 2024 by digital.