The other three households are due to receive a standard solar thermal heating system with a dual immersion as back up. (politics.co.uk)
Policy developments that address the heating and transport sectors continue to be slow and have been primarily focused on solar thermal heating systems and further support to biofuels. (seforall.org)
The I - beam design increases air flow through the vent and offers better thermal heat transfer. (corvetteblogger.com)