SOLAR ENERGY FOR ICE CONTROL

A solar energy pilot project (SERSO) was conducted on a bridge on the Swiss highway network. The aim of the project was: (1) to collect the heat of an asphalt bridge surface during the summer when surface temperatures of 60 degrees C and more are reached; (2) to store the heat in an underground storage facility, and (3) to utilize the heat during frost periods in winter, to heat the bridge surface, thus preventing formation of ice. The plant has been operational since late Spring 1994. This paper provides detailed energy balances, operational experiences as well as advice for future similar plants.