The heat harvesting ENVISION technology, which is brought to the market by CALOSOL BV, has been featured in a recent blog article on the website of KnaapenGroep that helped realise the demonstrations in Eindhoven.
Read about the (Dutch) interviews with Bart Erich (TNO), Marcel van Dooremalen (Trudo) and Bart Knaapen (KnaapenGroep) here:
Innovatieve techniek: warmtewingevel voor woningen in Eindhoven – KnaapenGroep
For more (English) information about the Dutch demonstration site, please visit ENVISION Demo Sites