Cheap charcoal air filters offer improvements to in-vehicle air quality
A cheap charcoal air filter can reduce nitrogen dioxide (NO2) inside vehicles by as much as 90%, compared to levels outside the vehicle.
Mar 6, 2023
0
27
Energy & Green Tech
News tagged with ventilation
Engineering
Low exergy concepts for the heat supply of existing multifamily houses
Heat pumps are a key technology for the heat transition, yet their implementation in existing multifamily buildings is a challenge. These buildings place special demands on the transfer systems for space heating and domestic ...
Mar 8, 2023
0
39
Engineering
Designable timbre is realized in a meta-silencer
Publishing in the International Journal of Extreme Manufacturing, a team led by researchers based at the Institute of Acoustics of Tongji University presents a meta-silencer supporting intensive mode density as well as highly ...
Mar 7, 2023
0
5
