As summer temperatures rise, some users of public transport in Switzerland have been complaining about a lack of air conditioning on trains, trams and buses. For this reason the public transport company cools carriages to no more than 5 degrees below the outside air temperature. The public transport operators in Zurich and Bern follow a similar protocol. Cooling systems are set to adjust inside temperatures in line with outdoor air temperatures. In addition, cooling systems are designed to reduce air humidity to make higher air temperatures more bearable – reducing humidity reduces the thermal conductivity of air cutting heat transfer.

Source: Le News July 22, 2023 01:56 UTC