Airtherm design, supply and install a wide range of efficient, high performance systems including flues & chimneys, natural ventilation & lighting, kitchen ventilation, air conditioning (comfort cooling), heat recovery & heat pumps and solar photovoltaic (PV) panels for commercial, industrial and private sectors. They use products of the highest quality, such as the Schiedel range and can boast experienced engineers with excellence in their field.

The MF system is manufactured using 0.6mm thick grade fully welded inner liner, 0.5mm thick grade 304 stainless steel outer casing with 25mm thick rockwool insulation. The product is proven and pressure tested for use on applications up to 5,000 Pascal (H1) rating. Also, with the positioning of the system, the choice was to have the flue polyester powder coated to Ral 7005

Paddy McGuinness, Managing Director of Colloide explains:

“This project makes use of existing waste heat from the London Underground extraction shaft and harnesses that energy into the district heating network which gets used in the local homes. The main technology used for this is the ammonia heat pump, the pump transfers the warm air into warm water and then subsequently into the district heating network. As a result, this project provides cheaper, greener energy to the local community. We’ve extended the existing heat network on Bunhill and this connects to the new energy centre but it also connects an additional 500 homes to the network.”

It’s not only heat which is provided by the Bunhill 2 system. The innovative fan in the ventilation system can be reversed to assist in cooling the London Underground network when required.

Bunhill 1 was launched in 2012 by Islington Council and this second stage takes advantage of a disused City Road Underground Station which was abandoned for nearly a century. It has now been renovated and contains a 500Kw ammonia heat pump which is driven by heat recovery from a heat exchanger coil within a London underground shaft. An innovative and futurisic way of recovering all aspects of energy such as the warm air lost throughout the northern line tube.