Posted on 29 June, 2011 by Mathew
||Windpower capacity (MW)
Source: Wikipedia/ World Wind Energy Report 2010. World Wind Energy Association. February 2011.
World’s largest offshore wind farms Wind farm (from Wikipedia various refs (click)
||Turbines and model
||100 × Vestas V90-3MW
|Horns Rev II
||91 × Siemens 2.3-93
||90 × Siemens 2.3-93
|Lynn and Inner Dowsing
|| United Kingdom
||54 × Siemens 3.6-107
|Robin Rigg (Solway)
||60 × Vestas V90-3MW
||48 × Siemens 3.6-107
|Nysted (Rødsand I)
||72 × Siemens 2.3
Looks like capacity of single wind turbines for offshore is 3MW each. That means we need less than 2000 to replace a nuclear power station… Now it’s only 1334.
Total capacity for UK is now around the 1 nuclear power station mark.
Filed under: climate | Tagged: Nuclear Renaissance, Replace nuclear, Wind Power | Leave a Comment »
Posted on 3 June, 2011 by Mathew
I have a problem visualising 1 tonne of carbon dioxide. Firstly it is colourless, secondly it is usually a gas. So what sort of volume are we talking about?
Relative Molecular weight = 12 + 16 + 16 = 32 + 12 = 44 g / mol.
1 tonne of CO2 = 1000 × 1000 / 44 = 22727.27 moles
One mole of an ideal gas at STP occupies 22.4 litres (US liters).
Assuming CO2 is an ideal gas, approximate volume of 1 tonne of CO2 is 509090.9 litres = 5.1 ML (Megalitre).
5.1 ML = 5.09×106 × 0.001 = 509 m3
An olympic swimming pool is 50 m × 25 m × 2 m (minimum depth) = 2500 m3, so it would take 5 tonnes of gaseous CO2 to fill one.
Filed under: climate, CO2 emissions | Leave a Comment »
Posted on 9 December, 2010 by Mathew
Greenpeace highlight climate change impact by sinking landmarks
Christ the Redeemer statue sits on a 9.5 meter pedestal located at the peak of the 700-metre Corcovado mountain it seems quite unlikely to be sunk by sea level rises in the near future. However if Green peace are predicting this 700 meter sea level rise I agree that would be challenging for human populations.
Does anyone know how much sea level is predicted to rise, how much it has risen recently?
Filed under: climate, Politics | Leave a Comment »
Posted on 8 July, 2009 by Mathew
The institute of physics have published a paper by Roger A Pielke Jr, in which he says the (UK) governments targets for climate change are unrealistic. In his paper The British Climate Change Act: a critical evaluation and proposed alternative approach he shows that the rate of change proposed by UK government is much higher than the rate of change made by the French in the past. More can be found on the IOP news feed.
I think we are off to a good start because of the drop in the economy, but I don’t think that is a sustainable way to reduce CO2 which requires investment in nuclear power stations (short term) and renewables like wind. I think it is good to set a target, but I am a bit worried that there is a lack of consensus over what needs to be done.
Take a look at David Mackay’s book Sustainable Energy – without the hot air for a reasoned plan of how we can meet our future energy needs in the UK.
Filed under: climate, UK | 1 Comment »