Dairy industry

Heat customer introduction



  • One of the largest production sites for powdered dairy products in France
  • 80,000 tonnes of whey and lactose produced in a year


Principle of solar thermal integration 


  • Preheating of fresh air feeding the main spray drying tower
  • Integration of 2 water/air exchangers : one in the main air inlet, one in the regeneration air inlet of the desiccant wheel
  • Fossil fuel saved: gas


Key innovation


  • Integration into a food process requiring demanding health and hygiene criteria
  • Achieve a solar coverage of 20% of the site’s drying needs

Project key figures

September 2020

work initiation target date

15,000 m²

solar thermal collector area on trackers

6,000 m³

hot water storage volume

about 8,000 MWH

expected annual production

2,200 tonnes

of CO2 emission avoided per year

Industry, Study case