From IT Project Management to Renewable Energy
Posts tagged London
Solutions for the Inner City
Feb 4th
I’m passionate about Somers Town, the small corner of central London where I’ve chosen to make my home. Nestled in between the gothic splendour of St Pancras and the fifties austerity of Euston, its a tiny district of densely built low rise apartments, home to the British Library, the RMT and Unison, railway stations and about 8000 people from all over the world. I can walk to the West End, have Regents Park on my doorstep, and every amenity I could wish for a short stroll away. I’m not one of those ‘buy a small-holding in Wales’ Greens, and I’m sure Wales doesn’t want me and my 8000 neighbours to try.
Per capita carbon emissions for domestic and road transport use in areas like this are low(1), because public transport is good and the cost of heating small apartments is much less than houses. If we’re to meet the energy challenges of this century, it will be by living in places like this.
And so, one of the reasons I’m doing this course is to find ways of bringing renewables into the inner city. I’ve started exploring this in the essays we do for each module, and will probably do my thesis on this subject.
It’s not an easy problem. Wind turbines on the tops of buildings don’t work well, with all the turbulence. Hydro power would get in the way of shipping on the Thames. Because we’re all so tightly packed in, with so many businesses and institutions, the energy density of inner urban areas is very high, making it all so much harder.
Clearly we need to reduce energy demand, and will have to bring a great deal in, from wind farms in the Channel and other sources but there are ways we can make our own. How about storing heat under roads, making use of the urban heat island effect and vertical boreholes with heat pumps, solar pv and thermal collectors, gas generated from organic wastes, growing microalgae for biomass in tanks on roofs and walls, hooking up all those treadmills in gyms to generators, harnessing the hot air in Westminster? Some of those have got to work! More blogs to come.
(1) Camden CO2 emissions per head were 7.3t in 2007, against a UK average of 8.0t. Domestic and road transport emissions per head were 2.48t, vs the UK average of 4.48t – ie when commercial emissions are not included. DECC National Indicators 185 and 186
Burning coal in central London
Jan 26th
The smoky coal fires of London were banished in the fifties and all that remains of that smog filled, grimy time are the blackened buildings of parts of Bloomsbury which haven’t been cleaned. Sunny days with blue skies are now common, but open fires very rare indeed.
Much to my surprise, coal burning is still possible. The Clean Air Act of 1993 makes it illegal to emit smoke in a designated Smoke Control Area, such as the London boroughs. You’re only allowed to use authorised fuels which include gas, electricity and anthracite – ie. coal.
Anthracite coal
Anthracite is very hard, shiny coal and is over 90% carbon. If you burn it, even at temperatures below its ignition point, it doesn’t emit smoke. It’s not the greatest of fuels – heavy, hard to light, expensive and with a calorific content about half that of gas – but it is legal.
The Clean Air Act doesn’t concern itself with CO2 emissions, and because of its high carbon content anthracite has one of the highest emission rates of any solid fuel. When you consider the carbon cost of mining, cleaning and transporting it, its obvious that using it in London would be a very bad idea indeed. Make sure your flat is well insulated, and look to other types of heating first.
