Oliver
Actual output for nuclear is typically around 0.7 but the carbon debt
was all incurred before operation and turning them off does not reduce
it. The carbon for the plant is all released before operation and if
this is delayed we may ask if there is a carbon equivalent of interest.
Let's ask Storm van Leeuwen.
Stephen
Emeritus Professor of Engineering Design
Institute for Energy Systems
School of Engineering
Mayfield Road
University of Edinburgh EH9 3JL
Scotland
Tel +44 131 650 5704
Mobile 07795 203 195
www.see.ed.ac.uk/~shs
On 23/08/2011 13:36, Oliver Tickell wrote:
Stephen, I was interested to see your recent post, below.
Reading the paper, there is something I am not clear about. A nuclear
power station is typically on full blast all the time giving a
capacity factor of 1 (except when it has to go off). However a gas
plant will modulate its output according to demand, giving I would
guess a typical capacity factor of say 0.6 (guess).
So, when the authors compare nuclear power and CCGT emissions, are
they forcing the CCGT to have a CF of 1 like nuclear? If so this is to
greatly exaggerate the actual CO2 emissions that you would expect from
a CCGT.
Another factor to consider is that as we get more intermittent
renewables like wind and solar PV on the grid, the effect will be to
further reduce the CF of gas plant - since when wind is generating
strongly, CCGTs will scale back their output. This will further reduce
the CCGT's CO2 emissions
Regards, Oliver.
==========================================
Stephen Salter <[email protected]> Aug 23 11:58AM +0100 ^
<mailbox:///C%7C/Documents%20and%20Settings/Oliver/Application%20Data/Thunderbird/Profiles/s4tkdjyp.Oliver/Mail/Local%20Folders/Inbox?number=128158075#digest_top>
Hi All
While a nuclear power station is working normally the main CO2 emissions
are the plant operators driving to work or slipping out for a smoke.
However quite a lot of oil is needed for more...
<http://groups.google.com/group/geoengineering/msg/6c0b24968aac4022>
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
--
You received this message because you are subscribed to the Google Groups
"geoengineering" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/geoengineering?hl=en.
