Reliable Long Term Performance of Bhe Systems and Market Penetration — the Swiss Success Story
نویسندگان
چکیده
The reliability of long-term performance of borehole heat exchanger (BHE) systems is now proved by numerical modelling, supported by a unique data base. This lead to rapid market penetration. Such heat pump-coupled BHE systems are ideally suited to tap the ubiquitous shallow geothermal resources. With presently 20'000 installations, Switzerland has the highest areal BHE density worldwide (about 1 installation every 2 km) and with over 40 W installed capacity per capita it occupies world rank 4 in geothermal direct use. Growth rate is 10 % per year. Environmental motivation as well as economic incentives are responsible for this development. Novel solutions like energy piles are also emerging.
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