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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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    •  
      CommentAuthordjh
    • CommentTimeAug 22nd 2016 edited
     
    . (thanks, Ringi)
  1.  
    The key is a renewable energy SYSTEM.

    Wind energy is a fuel $aver and constructing an energy system around variable or cycling (such as tidal lagoon) renewables is not an insurmountable problem as indicated by many reports from all around the world and as in the recent Royal Academy of Engineering report ;
    http://www.raeng.org.uk/news/releases/shownews.htm?NewsID=925

    High renewable scenarios from around the world
    http://www.mng.org.uk/gh/scenarios.htm

    Denmark Smart Energy Systems: 100% Renewable Energy by 2050 (video)
    https://www.youtube.com/watch?v=S1P31EC0YsE
    tech presentation
    https://www.youtube.com/watch?v=7-sDkrZmrUA

    Renewables, nuclear, or fossil fuels? Scenarios for Great Britain’s power system considering costs, emissions and energy security Imperial College Pfenninger & Keirstead
    http://blog.environmentalresearchweb.org/2015/07/25/uk-renewables-can-get-to-80-or-more/

    The Fraunhofer 2050 REMod-D high renewables model shows no cost penalty.
    https://workspace.imperial.ac.uk/climatechange/Public/pdfs/presentations/solar%202050/Solar-2050_2014-01_Henning.pdf

    The only problem are existing vested interests, supine politicians and poorly briefed journalists. The grid needs restructuring for the coming renewable energy revolution. We certainly do not need over complicated, high cost, inflexible and high risk nuclear. In fact current nuclear proposals will block investment in renewables after 2020, locking the UK into the high cost nuclear cycle.

    When you have variable renewable, base load generation is redundant, you need quick reacting infill such as already existing gas fired CCGT Combined Cycle Gas Turbine and OCT Open Cycle gas Turbine (perhaps fuel cells in the future if they scale). We will need this anyway when a nuclear has a unintended shutdown. This will be relatively low cost with occasional use (give them capacity payments if need or just let the state buy them cheap) and well below C02 emission targets. The ramp up and down rates are similar to existing rates and extra maintenance costs are minimal.

    With some CO2 capture and use of biomass + coal you can even have low to neutral CO2 emissions. BECCS biogenic carbon capture and storage (and use). CO2 then has an economic value.
    http://www.publications.parliament.uk/pa/cm201213/cmselect/cmenergy/529/529we10.htm
    http://decarbonizingfires.com/Heating%20Gas%20-%20Carbon-neutral%20Heating%20Gas.pdf

    Base load is redundant (and puts the fear of God into the big 6)
    www.energyscience.org.au/BP16%20BaseLoad.pdf

    First reduce demand with a roll out of energy efficiency.

    Storing potential electrical energy is high cost with diminishing returns in round trip efficiency.

    Better to use other storage vectors that are lower cost first in an energy systems approach, then use higher cost but valuable electrical storage with short to long term storage capacities and availabilities as needed eg District Heating (using MW heat pumps on HV grid with inter-seasonal low cost storage), pumped hydro electric, batteries, cryogenic heat engines, P2G renewable power to gas has lower efficiency so one of the last port of calls but it is easily and cheaply stored and can be used for long periods in great quantity, etc.

    JRC District Heating report
    http://setis.ec.europa.eu/system/files/JRCDistrictheatingandcooling.pdf

    see 4th generation District Heating low temperature 60-50C supply/ 30-20 return with large area surface emitters eg wall or floor heating
    www.4dh.dk

    Lots of interesting new renewable developments in the pipeline
    eg prototype osmotic power station using high saline geothermal district heating water in Denmark

    https://stateofgreen.com/en/news/salt-power-to-produce-co2-neutral-electricity
    https://issuu.com/saltpower/docs/saltpowerbrochure-4-2016

    solar photovoltaic + batteries - perhaps but not good economies of scale or use of resources, congestion? More public transport and trams better eg Trampower www.trampower.co.uk
  2.  
    Wow John, I wish you were around on page 1 of this thread!!! Thanks for the above.
    • CommentAuthorringi
    • CommentTimeAug 24th 2016
     
    Posted By: John Daglishsolar photovoltaic + batteries - perhaps but not good economies of scale or use of resources,


    Works well, but not for the UK! Great if you are somewhere with sun most of the year and a lot of AC load..
  3.  
    I haven't been looking at this thread, but just 'dropped in' today. I have been 'invoked'!

    Ed davies wrote:

    ''Posted By: ringi
    believe that drying in the name of god''

    drying up?

    Are Nick and I the only ones who find Ringi's typos a source of humour? Or do others just not notice?''

    Is this about praying that your washing dries before it rains?
    •  
      CommentAuthorfostertom
    • CommentTimeSep 3rd 2016 edited
     
    OO dear I'm getting anxious - lulled by the explosion of news about PV's crashing prices and booming installations worldwide, plus storage costs ditto
    https://www.amazon.co.uk/Switch-solar-storage-means-cheap/dp/1781256357/ref=sr_1_1?ie=UTF8&qid=1472922777&sr=8-1&keywords=the+switch+chris+goodall
    it had seemed Mrs M was alert to the new situation and it was all over for Hinkley.

    Now not so sure - looks more like just a suspense tactic to bargain with China. UK may be the v last country to commit to the biggest ball-and-chain ever, just before everyone else sees sense.
    •  
      CommentAuthorfostertom
    • CommentTimeSep 15th 2016
     
  4.  
    Oh bug*er
    •  
      CommentAuthorfostertom
    • CommentTimeSep 16th 2016 edited
     
    • CommentAuthorGotanewlife
    • CommentTimeSep 16th 2016 edited
     
    Look at it this way: it is the lesser of 2 evils. I guess (hope) that's the way she did look at it - it is better to have Hinkley than not have Chinese (specifically) but mega investment from other countries due to our unreliability etc; and I doubt any open minded person would say that is an easy decision to make or consider that lay people like us could even list just the important variables/arguments.

    Her hands were tied, she won some concessions. I will not judge her.
    •  
      CommentAuthorfostertom
    • CommentTimeSep 16th 2016 edited
     
    Posted By: Gotanewlifeit is the lesser of 2 evils
    spell those out?
    • CommentAuthorGotanewlife
    • CommentTimeSep 16th 2016 edited
     
    Posted By: fostertomspell those out?

    Evil Choice 1: Hinkley C

    Evil Choice 2:
    Posted By: Gotanewlifenot have Chinese (specifically) but mega investment from other countries due to our unreliability etc

    Yours perplexed?
    • CommentAuthorEd Davies
    • CommentTimeSep 16th 2016
     
    • CommentAuthoratomicbisf
    • CommentTimeSep 16th 2016
     
    Well I should hope that they think that the wider benefits in terms of trade with China and France outweigh the cost, because on it's own merits it seems a terrible deal!

    Talking of China and electricity generation, just been reading some reportage from China:-

    Thermal (fossil fuel, basically coal) generation 96 TWh lower in 2015 than 2014, hydro 44 TWh up, solar 43 TWh up, nuclear 35 TWh up, wind 29 TWh up.

    https://cleantechnica.com/2016/09/15/latest-trends-chinas-continuing-renewable-energy-revolution/

    Ed
    • CommentAuthorEd Davies
    • CommentTimeNov 10th 2016
     
    http://www.ecowatch.com/france-nuclear-power-shut-down-2086414462.html

    “A third of France's nuclear reactors have been shut down by industry regulators as revelations emerge about the supply of sub-standard parts.

    As investigations into falsified documents and excess quantities of carbon in steel continue, more closures are expected. This is not yet a full-blown crisis for the nuclear industry, but it is putting serious strain on the finances of French nuclear giant EDF and causing electricity price rises across western Europe. …”
    •  
      CommentAuthorSteamyTea
    • CommentTimeNov 10th 2016
     
    Yes, caught a snippet of that on the radio today.
    There was also something about the Chinese and Hinkley.
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