PowerSwitch Main Page
PowerSwitch
The UK's Peak Oil Discussion Forum & Community
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Small Hydro and the nimbys
Goto page Previous  1, 2
 
Post new topic   Reply to topic    PowerSwitch Forum Index -> Other Alternatives
View previous topic :: View next topic  
Author Message
JohnB



Joined: 22 May 2006
Posts: 6457
Location: Beautiful sunny West Wales!

PostPosted: Fri Jul 08, 2011 12:36 am    Post subject: Reply with quote

kenneal wrote:
But I'd rather have a few of them in my back yard than a 1gig nuke a hundred miles away.

They wouldn't work in your back yard. You haven't got a stream Laughing.
_________________
John

Eco-Hamlets UK - Small sustainable neighbourhoods
Back to top
View user's profile Send private message
An Inspector Calls
Banned


Joined: 27 Jan 2011
Posts: 961

PostPosted: Fri Jul 08, 2011 9:03 am    Post subject: Reply with quote

kenneal wrote:
But I'd rather have a few of them in my back yard than a 1gig nuke a hundred miles away.

Great, very useful.

    Has anyone done any consideration of whether 15 kW is the right sized turbine for the job - so you'd have to look at typical flow-duration curves for the river?
    Has anyone considered likely maintenance issues and costs? This is important because the scheme, at 15 kW max production, has a maximum revenue of 26,200 per annum. If the capacity factor is the usual 20 %, you're down to 5,000 per annum. You've probably got no debt repayments, tax, rates, etc. but who's going to clean this thing, check over basic safety and operation of the system?

I'm not particularly bothered either way whether you go ahead or not. In the end, UK PLC is paying for this. But at least with this scheme there's a very public group of people driving the scheme forward and they can be seen to carry the can.
Back to top
View user's profile Send private message
kenneal - lagger
Site Admin


Joined: 20 Sep 2006
Posts: 9815
Location: Newbury, Berkshire

PostPosted: Fri Jul 08, 2011 9:36 am    Post subject: Reply with quote

An Inspector Calls wrote:
    Has anyone done any consideration of whether 15 kW is the right sized turbine for the job - so you'd have to look at typical flow-duration curves for the river?
    Has anyone considered likely maintenance issues and costs? This is important because the scheme, at 15 kW max production, has a maximum revenue of 26,200 per annum. If the capacity factor is the usual 20 %, you're down to 5,000 per annum. You've probably got no debt repayments, tax, rates, etc. but who's going to clean this thing, check over basic safety and operation of the system?

I'm not particularly bothered either way whether you go ahead or not. In the end, UK PLC is paying for this. But at least with this scheme there's a very public group of people driving the scheme forward and they can be seen to carry the can.


Yes! This is the first of two or three possible sites. We have to maintain flows in the river so we have to spread the water abstraction from canal to river across the length of the river in the town.

We originally wanted to put in three 1.5MW wind turbines but a bunch of NIMBYs didn't like it and suggested hydro. If the hydro doesn't work we can blame it on the NIMBYs but there is no reason why the hydro shouldn't work. It was very interesting that the people nearest the wind turbines were in favour. It was the people in the bigger houses further away, who couldn't see them, that were against.

We should get a very good capacity factor out of them because we aren't taking the full flow available. Because we are using a number a smaller turbines we should get a very high capacity factor out of at least one and we can keep wear even by shutting them down alternately.
_________________
"When the last tree is cut down, and the last river has been poisoned, and the last fish has been caught, Only then will you find out that you cannot eat money". --The Cree Indians
Back to top
View user's profile Send private message Send e-mail Visit poster's website
An Inspector Calls
Banned


Joined: 27 Jan 2011
Posts: 961

PostPosted: Fri Jul 08, 2011 10:10 am    Post subject: Reply with quote

So what are the flow characteristics of the river, in broad terms of flow (cumecs) and duration?
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    PowerSwitch Forum Index -> Other Alternatives All times are GMT + 1 Hour
Goto page Previous  1, 2
Page 2 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group