Mini-CHP achieves large savings for London home

Published:  03 November, 2011

Baxi SenerTec, CHP
Mini-CHP supplying electricity and heat for radiators and a swimming pool in this London home is saving over £2000 a year.

Annual cost savings of over £2000 are expected following the installation of a Dachs mini-CHP unit in a residential property in London. Installed in a garage, together with a condenser and buffer vessel, the unit generates up to 15.5 kW of heat, which feeds into a 750 l buffer vessel connected to the heating circuit, also served by two condensing boilers. The circuit serves space heating for this substantial Victorian detached house and indoor swimming pool in an extension, which provides a constant demand for heat.

The heating system was designed by consulting engineers Michael Popper Associates, and its installation was overseen by technical-support staff from Baxi-SenerTec UK.

Power generated by the Dachs unit is used to supply household demand and displace electricity from the grid. Dachs gas-fired units have an electrical output of 5.5 kW and a minimum heat output of 12.5 kW, or up to 15.5 kW using a condenser.

Over seven months from October 2010 the unit generated 143 MWh of heat and 26 MWh of electricity.

Paul Brookes, technical manager for Baxi-SenerTec UK, comments, ‘Calculating cost savings hasn’t been entirely straightforward, due to a rise in fuel costs and change in running conditions since the system was first installed. Now that the unit is running 24 hours per day and based on the latest fuel tariff, new annual savings are projected to be in the region of £2048 — a figure that can only increase year on year given the constant upward movement in fuel prices.’

For more information on this story, click here: Nov 2011, 131

comments powered by Disqus

Search

Welcome

Welcome to Modern Building Services Online, the web edition of Modern Building Services (MBS) journal and the UK's most popular Building Services engineering site. Modern Building Services covers the entire Building Services Engineering industry. This site contains archived content from the journal, plus web-specific content.

When you go to our digital edition, you can also access the archive of digital editions.
October 2018: DIGITAL EDITION

ARCHIVE OF DIGITAL EDITIONS

Modern Building services has a group
on Linkedin - join us!

BESA conference 2018

Show

Jobs

  • Senior Building Services Engineer

      Invitations are invited from experienced Building Services Engineers to assist in the development of a new division within an established professional practice. The projects will be predominantly with Defence-related and Government establishments but w......

  • Building Energy Management Systems (BEMS) Engineer

      Consistently rated amongst the world's best universities, Imperial College London is a science-based institution with a reputation for excellence in teaching and research. Imperial has one of the largest and most diverse university estate portfolios in......

  • Engineering Technical Assistant

      Consistently rated amongst the world's best universities, Imperial College London is a science-based institution with a reputation for excellence in teaching and research. Imperial has one of the largest and most diverse university estate portfolios in......

more jobs »

Poll

"Is the Building Services industry lagging behind in the implementation of BIM?"



Calendar