Comments for Claverton Group

Comment on Almost new 1.5 MW Jenbacher biogas engine – an assessment of possible options for heat supply by kluizebos

kluizebos — Sat, 13 Mar 2010 20:40:30 +0000

producent groene stroom

Comment on Extract from Mailman transportation issues, trams, buses etc. by Clive Hinchcliffe

Clive Hinchcliffe — Sat, 13 Mar 2010 14:15:32 +0000

Important issues not covered here are movement of goods, which must be transferred to rail, tram and river systems.

The UK can produce enough Bio-gas from waste to power all public transport and goods delivery vehicles.

This is the quickest means to reduce emissions because it will be decades before UK Grid electricity comes from renewable source’s.

Tram systems can be used at off peak and at night to both move goods around town and collect waste to use as fuel.

No one in our cities needs to own a car. Car sharing by the hour should form part of every towns public transport system. The utilisation of each car can be doubled if not more.

However the biggest problem facing the UK is the way its’ transport system is managed, get that right and the country can start to catch up with the rest of the World.

Comment on Extract from Mailman transportation issues, trams, buses etc. by James Skinner

James Skinner — Sat, 13 Mar 2010 12:36:48 +0000

It is perfectly possible and economical to convert surface public transport in urban areas from diesel buses to biomethane powered light, low-cost trams. There is more than enough organic waste to provide all the fuel that would be required. Most of this waste is now going into landfill. If it is anaerobically digested then not only will it produce enough fuel to supply all the urban public transport vehicles but it will also ensure that all the nutrients in the waste are returned to the soil to maintain fertility so we may continue to eat home grown food. Untreated waste will produce methane, which is 25 times more damaging as a Greenhouse gas than CO2. Whilst the necessary AD processing facilities are being built (see http://www.AgGrowGas.co.uk) CNG can be used, as it is interchangeable with biomethane made from recycled waste – both fuels are just methane. We could have been working on this for many years, using money progressively diverted from the £400 million annual subsidy for diesel buses provided under the so-called Bus Services Operators Grant which is in direct conflict with declared government policy. Unfortunately DfT, DECC, DBIS etc appear not to be interested.

Comment on Relative / comparative costs of wind energy, nuclear energy, hydro power, coal power, natural gas, geothermal energy, and biomass by Sergei Rostov

Sergei Rostov — Thu, 11 Mar 2010 11:17:46 +0000

Nanosolar is now building 16.4% efficient PV’s at a cost of $0.97/watt for panels that will last >25 years. Given that most places in the US have 40%+ sunny days, mulitply by five (to include nighttime), do the math, and you get $.023/kwh. Two cents, not forty(!)

Comment on Owning and Operating Costs of Waste and Biomass Power Plants by Vinamra Chaturvedi

Vinamra Chaturvedi — Fri, 05 Mar 2010 07:46:09 +0000

From the Tabular statistics above, one would assume, that the waste wood processes are less efficient then the forestwood processes.

An interesting parameter to include in the above would be a comparison of conventional fuel (like coal) $/MW on production site v/s $/MW on the consumer side.

A less friendly figure on the consumer side in $/MW terms using conventional fuel,compared to the $/MW figure on the production side(and its relative comparison with above),should act as a pointer towards non-captive power planing.

Am I making sense ?