Research on cooling without air conditioning: 5 tips from Lucerne University

Lucerne University of Applied Sciences has studied methods for lowering the perceived indoor temperature without air conditioning. An experimental study identified five tips that contribute to a cooler indoor climate and promote sustainable living. The findings aim to meet the growing need for energy-efficient cooling methods as temperatures rise.

The five tips identified are:

• The power of scents: Essential oils such as menthol, mint, lemon and rosemary can be dispersed into a room through diffusers. These scents activate cold receptors on the skin and create a cooling sensation without changing the actual temperature. Researcher Ute Ziegler particularly recommends a mix of rosemary and lemon with menthol for a stronger cooling effect.
• Smooth bedding: Using smooth cotton-satin bedding, ideally in greenish-blue tones, can dissipate heat better and lead to a better sleeping climate.
• Cooling sounds: Sounds such as water or nature noises can influence the perception of temperature through psychological and neural processes, contributing to a higher tolerance for heat.
• Colour design: The targeted use of cool colours such as blue and turquoise in interior design can create a cooler ambience and improve well-being.
• Multisensory approaches: Innovative cooling methods that work through visual, acoustic and olfactory perception can positively influence the subjective perception of temperature.

These findings come from the "Cool Down" study by Lucerne University of Applied Sciences, which examined various cooling concepts for indoor spaces in the context of housing for older people, in order to counter the effects of climate change. Further information is available on the Lucerne University of Applied Sciences website.