Our Project
SIG, Switzerland
Service Industriels de Geneve
800 m2 solar field; 0.55 MWth
Le Lignon (GE), Switzerland
73 to 93°C
Energy Utility
539 MWhth/y (675 kWh/y/m2)
District Heating
66,122 m3/y of natural gas
EPC, with 20-year revenue sharing above 415 MWh/y delivered energy
131 ton/y
Challenge
A leading Swiss energy utility, SIG, is required by law to enhance its clean heat offering and renewables contribution to its 30 MWthdistrict heat network in Geneva, while reducing natural gas import. Solar thermal is required to heat above 80ᣞC the district network return flow in winter with limited irradiance, even when raining or snowing.
Solution
TVP integrates the return pipe of the district heat network with a water-to-water heat exchanger, delivering 12 months per year consistent heat above 80ᣞC, even when panels are covered by snow
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