Hackney Homes generating carbon reductions


Baxi EcogenAs part of its carbon reduction pilot project, Hackney Homes has installed two Baxi Ecogen dual energy systems. The wall hung, gas boilers, which also generate electricity, have replaced old, boilers during a programme of planned maintenance.

Nigel Burbridge of Hackney Homes explains: "We are committed to lowering carbon emissions from the council homes in Hackney. That is why we have trialled a number of different technologies, including Baxi Ecogen, solar thermal domestic hot water, heat pumps and passive flue gas heat recovery devices installed in conjunction with high efficiency boilers. This means we can match the most appropriate technology with the type of property, and ensure the best carbon savings and energy bill reductions for our residents".

The uniqueness of the Baxi Ecogen is that it is a like for like replacement for a conventional gas boiler and is a familiar technology for the resident to live with. Whilst it is heating the home and hot water like a high efficiency gas boiler, it is also generating electricity for them to use, instead of drawing it from the electricity grid. This means lower fuel bills and a greener carbon footprint for the householder.

A Baxi Ecogen was installed in a cupboard on the first floor landing in the three bedroom end of terrace home of Mr and Mrs Diamond in July 2010 by plumbing and heating contractor Birchcroft plc. Both in their 70s, they have lived in the property for 26 years.

Mrs Diamond says: "We often have lots of family visiting us and our grandchildren to stay, so we need plenty of heat and hot water. We now have a room thermostat so we can easily control the temperature to suit us and keep us comfortable.

"The radiators heat up much quicker with this new boiler, and it's great to be generating our own electricity."

The Baxi Ecogen Dual Energy System is a micro-combined heat and power (micro-CHP) wall hung gas boiler, which generates both electricity and heat from the same source close to where it is to be used. The first boiler of its kind available on the market, it is an easy replacement for a conventional gas boiler.

For electricity generation, it uses a Stirling engine that is heated by burning gas. Helium inside expands and contracts to move a piston up and down between a copper coil, generating up to 1kW of electricity at 50Hz single phase. Any electricity that is not used in the home can be exported back to the grid. It is MCS certified so is eligible for the Government's Feed-in Tariff.

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