Jump to content

Log in or register to remove this advert

Making the news today....


Mick Dempsey

Recommended Posts

Think it's pretty much the world over at the moment, Australia just changed parties, new Zealand are fed up of the smiling Arden. Canada similar with Trudeau, Sweden might also switch party.

 

Might be something of a reflection on career politicians, all focus group policy and zero real world experience.

Edited by GarethM
  • Like 1
Link to comment
Share on other sites

Log in or register to remove this advert

On 19/08/2022 at 13:34, openspaceman said:

What lies?

 

If you are talking in general yes you are right, the cheapness of fossil fuels and the vested interest in producing them has meant the urgent need to deal with the external costs of them hasn't allowed the renewable energy business to develop as far as it could have from when problems became apparent 50 years ago. It is a basic human trait to live for today.

 

At the domestic level an individual can comfortably do without the grid for most of their electricity with a battery that only stores a days worth. I could even do without  the grid  for the last 450kWh I fall short of from Mid November to March with a simple chp system which would  make better use of the thermal energy of gas. Of course we are going to rely on fossil fuels for a long time yet but no need to continue with such profligacy and those living in high density housing will have to rely on what is provided, and pay for it.

It's simple O level physics that show why this is not practicable;energy in the wind is the mass flow times the square of the velocity, mass flow also contains a velocity term as it is mass  passing per unit time, hence the energy varies with the cubic power of the wind velocity. So if you design the hardware to make use of the wind  and produce a return on the hardware at an average 7 metres per second then double the wind speed to 14m/sec and you need to cope with producing 14 times the average amount of power, it is simply not worth investing the equipment for such a range  so cheaper to produce the power around the average speed with machinery optimised for it and shut down when the windspeed is too high for the equipment to absorb the energy.

 

This is an interesting development;-

 

NEWS.MIT.EDU

MIT engineers have developed a method to increase wind farms’ energy output. Whereas individual turbines are typically...

 

Link to comment
Share on other sites

On a sample size of three turbines in India, surely they could find somewhere a little closer to MIT.

 

I would hope turbine manufacturers a d installers already knew about wake turbulence, it's the reason they have to separate big planes and spacing whilst landing. Which I think was also the reason for fitting winglets to the a380, to reduce vortices on landing.

Link to comment
Share on other sites

2 hours ago, GarethM said:

Think it's pretty much the world over at the moment, Australia just changed parties, new Zealand are fed up of the smiling Arden. Canada similar with Trudeau, Sweden might also switch party.

 

Might be something of a reflection on career politicians, all focus group policy and zero real world experience.

Or indeed the fact many people ( not all admittedly) are waking up to the fact they had the piss taken out of them for the past two years. 3 of the 4 countries you mention were notorious for full on hardcore restrictions 🤷‍♂️Coincidence maybe. 

  • Like 3
Link to comment
Share on other sites

14 minutes ago, Johnsond said:

Or indeed the fact many people ( not all admittedly) are waking up to the fact they had the piss taken out of them for the past two years. 3 of the 4 countries you mention were notorious for full on hardcore restrictions 🤷‍♂️Coincidence maybe. 

Italys turn next month also 

  • Like 1
Link to comment
Share on other sites

That should be fun watching, didn't the last election fail to elect a party as it's the European style coalition governments.

 

Plus it'll be interesting if the Finland PM tests positive for cocaine.

Edited by GarethM
Link to comment
Share on other sites

29 minutes ago, GarethM said:

Everyone knows it's never going to come back positive, one can dream 

Finnish politics is as clean and boring as it’s possible to be. To be honest I think the opposite in as much as it proves again what lying ott sensationalist arseholes most media outlets are and public opinion will be on her side for it, the media has become all powerful nowadays and seems to revel in pulling people down or scaremongering. 

  • Like 2
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  •  

  • Featured Adverts

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.