The EU is urging the UK government to review its biomass strategy, saying burning wood should no longer be classed as carbon neutral.

The Department of Business, Energy and Industrial strategy says subsidies are only given to biomass which complies with strict sustainability criteria and biomass is a “valuable” part of the National Grid.

Read more here: https://news.sky.com/story/climate-change-former-un-vice-chair-calls-on-uk-to-review-policies-on-burning-wood-for-energy-12243870

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Powermax Biomass Gasification Power Plant, Waste To Energy, Biomass To Energy, biomass gasifier, MSW gasifier, RDF gasifier, biomass power plant, waste power plant, msw gasification power plant, msw power plant.

The basic principle of POWERMAX’s biomass gasification system(abbreviated as BGPS) is to convert Agriculture and forestry products and wood processing remains(including rice husk, wood powder,branches, offcuts, corn straws, rice straws, wheat straws, cotton straws, fruit shells, coconut shells, palm shells, bagasse, corn cobs and etc.),MSW and RDF into combustible gas.

Our biomass gasification process includes three steps. The First step is biomass gasification, which convert biomass into syngas.The Second step is syngas purification.The producer gas coming from gasifier usually contains contaminants including dust, coke, tar and etc. The contaminants will be removed by the purification system to ensure normal operation of gas engine.

The Third step is power generating in gas engine. The high temperature exhaust gas may be reused by waste heat boiler to generate steam or hot water for civil or industrial use.Steam turbine may also be considered to make a gas-steam combined cycle power plant, which will increase the total efficiency.

The POWERMAX biomass gasification power generation systems are based on a modular concept and are able to applicable for 50-20000KW biomass power station.

A series biomass generator sets from 50KW to 1200KW are developed by POWERMAX to combine with POWERMAX advanced gasification technology.

These gas generator sets are using the high efficiency Siemens technology alternators,Chinese top brand medium speed gas engine(500-1500rmp) with advanced European engine control systems. The high performance of the POWERMAX biomass gasification plants and the later production of electricity with the gensets represents a competitive solution when compared with conventional boiler-fired system.

Comparing with other renewable power generating system, POWERMAX-BGPS is characteristic of:
1) Flexibility. Gas engine,gas turbine and even waste heat
recovery boiler may be used considering various power plant
capacity requirements. It ensures high power generating
efficiency. Different capacities of biomass power generation
plant can be designed with various types of POWERMAX-BGPS system.

2) Clean technology. Biomass, as one kind of renewable energy,
may reduce the emission of carbon dioxide causingfrom fossil fuel.Nitrogen oxides emission is very limited in our biomass gasification power generating system because of low temperature(700℃-1200℃）。

3) Economical. POWERMAX-BGPS is capacity flexible.Even small size biomass power plant is also profitable process and less land requirements make biomass gasification power plant more economical comparing with other renewable energy.Generally speaking,biomass gasification power generating is the most economical technology in renewable power generating is the most economical technology in renewable power generating plant,the cost of which is nearly the same as small-size conventional power plant.

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Solar panels and wind turbines are great, so long as the sun shines and the wind blows. But what if they do not? Well, then we store the energy. But how? In this video I explain how high the risk of a cold, dark, and windless period is — the “cold Dunkelflaute”, and what energy storage we need for intermittent renewables.

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The figure I show at 1 minute 49 seconds is from this report: https://www.irena.org/publications/2021/Jun/Renewable-Power-Costs-in-2020

The estimate from the German Weather Service that I mention at 2 minutes 46 seconds is here: https://www.dwd.de/DE/presse/pressemitteilungen/DE/2018/20180306_pressemitteilung_klima_pk_news.html

The figure I show at 2 minutes 53 seconds is from this paper: https://www.mdpi.com/1996-1073/14/20/6508

The paper about the reliability of solar and wind which I discuss at about 3 minutes is this: https://www.nature.com/articles/s41467-021-26355-z

The paper I mention at 4 mins 40 seconds is this: https://www.mdpi.com/1996-1073/14/20/6508

The data for installed storage capacity I show at 6 mins 10 seconds is from here: https://sandia.gov/ess-ssl/gesdb/public/statistics.html
https://www.sciencedirect.com/book/9780128198926/thermal-mechanical-and-hybrid-chemical-energy-storage-systems

The paper with the estimates for carbon dioxide emissions from storage is here:
https://pubs.acs.org/doi/10.1021/es505027p

The estimate for the carbon footprint of lithium-ion batteries is from here:
https://www.forbes.com/sites/rrapier/2020/02/16/estimating-the-carbon-footprint-of-utility-scale-battery-storage/?sh=3fde25017adb

And the Swedish report that I mention at 16 mins is here: https://www.ivl.se/download/18.14d7b12e16e3c5c36271070/1574923989017/C444.pdf

Many thanks to Jordi Busqué for helping with this video http://jordibusque.com/

00:00 Intro
00:31 The Dunkelflaute Problem
07:07 Energy Storage Options
14:04 Carbon Footprint of Energy Storage
16:59 What Do We Learn From This?
17:32 Sponsor Message

#science #environment #climatechange
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Geothermal is the heating system of the future. With efficiencies of 400% and no emissions it’s just the ticket for fighting climate change and oh, it’s also 700% efficient at air conditioning, perfect for those 40 Celsius summer heat waves. This week on Green Energy Futures we talk to Devon Winczura and Steve Oslanski of Envirotech Geothermal who show us why geothermal heating and cooling is the wave of the future.
Check out our blog and CKUA Podcast at GreenEnergyFutures.ca

Fossil fuels provide 95% of the world’s total energy, yet are considered to be the largest contributing factor to global warming.

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Hydropower or hydroelectricity is the creation of energy from fast-flowing water to generate electricity. Come behind the scenes of a hydropower station to learn how hydropower works.

Visit our website: www.hydro.com.au
Follow us on Facebook: www.facebook.com/hydrotasmania
Sign up for our newsletter: www.hydro.com.au/the-spill

Transcript:

Hydro Tasmania is Australia’s largest clean energy provider and the largest provider of renewable energy in Australia.

Do you know how we generate electricity from water? This is sometimes referred to as hydroelectricity or hydropower.

It’s all about utilising the two forms of energy that water contains, potential and kinetic, and transferring it into electrical energy.

Potential energy, also known as stored energy, is gained by the construction of dams in varying design along natural waterways.

The water is captured both directly from rain as well as inflows from adjacent rivers, creeks, streams and melting snow.

We can also increase the size of existing lakes by diverting inflows and blocking outflows. An example of this being the Great Lake in our Central Highlands.

As the water rises behind the dam wall the dam’s water becomes a potential energy reservoir. When the demand for electrical energy occurs the stored water is released from the catchment by opening an intake gate or inlet valve.

As all hydropower stations are built lower than the water catchment itself. The water is connected via a combination of canals, tunnels and pipes into the power station below.

The power stations are sometimes built underground. Depending on the type of turbine, the water either flows through or directly hits the turbine runner and causes it to spin. The height between the reservoir and the hydropower station determines how fast and with how much power the energy of water will travel and be transferred to electrical energy.

The energy of the moving water has now transferred to mechanical energy and after it passes through the turbine is released back into the river below the power station.

In addition to generating electricity and through controlled methods, a measured amount of stored water can be released into the downstream river to maintain waterways for both recreation and aquatic life.

Above the spinning turbine is a shaft which connects to the generator. Inside the generator is a rotor and a stator. The rotor contains many magnets. The rotor spins inside the stator which is filled with copper windings.

Now the mechanical energy is transformed into electrical energy which is carried by the copper wire and fed into a transformer.

The voltage is increased to allow for the efficient transmission of energy to a substation near your town, where it is then stepped back down to a lower voltage. The energy is distributed throughout the town or city where it is further stepped down to 415 or 240 volts.

The energy generated from water helps power Tasmanian households and businesses. It’s also sold into the national grid supporting Australia’s transition to a renewable energy future.

And that’s how hydropower works!

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References
A great deal of information in this video was found through phone interviews with Simec Atlantis engineers
[1] 4,170 TW is annual US energy production (table 1.1 here) – US wave power potential is ~2000TW, according to this 2011 DOE report
[2] https://www.iea.org/topics/renewables/ocean/
[3] https://www.youtube.com/watch?v=pwChk4S99i4
[4] Figure 9.6 and 9.7 on page 82 https://tethys.pnnl.gov/sites/default/files/publications/MeyGen-2012-ES.pdf
[5] https://tethys.pnnl.gov/sites/default/files/publications/La_Rance_Tidal_Power_Plant_40_year_operation_feedback.pdf
[6] https://tethys.pnnl.gov/annex-iv-sites/sihwa-tidal-power-plant
[7] Page 19 https://tethys.pnnl.gov/sites/default/files/publications/La_Rance_Tidal_Power_Plant_40_year_operation_feedback.pdf
[8] https://tethys.pnnl.gov/sites/default/files/publications/Final_EMP_report_SeaGen.pdf
[9] https://www.power-technology.com/projects/strangford-lough/
[10] http://icomps.co.uk/seagen-decommissioned-after-successfully-delivering-11-6gwh-to-the-national-grid/
[11] https://www.seai.ie/publications/Renewable-Energy-in-Ireland-2019.pdf
[12] Page 14 https://www.climatexchange.org.uk/media/3100/state-of-the-wave-and-tidal-industry-report.pdf
[13] https://www.bt-projects.com/wp-content/uploads/documents-public/Environment/RHK-2011-SeaGen-Environmental-Monitoring-Programme.pdf
[14] http://www.renewableenergyfocus.com/view/13491/meygen-to-develop-400-mw-uk-tidal-power-site/
[15] https://vimeo.com/237566185
[16] Figure 11.2 and 11.3 page 114 https://tethys.pnnl.gov/sites/default/files/publications/MeyGen-2012-ES.pdf
[17] Page 154 https://tethys.pnnl.gov/sites/default/files/publications/MeyGen-2012-ES.pdf
[18] Page 43 https://tethys.pnnl.gov/sites/default/files/publications/Final_EMP_report_SeaGen.pdf
[19] Page 39 https://tethys.pnnl.gov/sites/default/files/publications/Final_EMP_report_SeaGen.pdf
[20] Page 17 https://tethys.pnnl.gov/sites/default/files/publications/MeyGen-2012-ES.pd
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I compare many different ways of tweaking a CPU to increase efficiency and lower power consumption to see what methods work best for which use cases.
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How Do Wind Turbines Work? | Sources Of Electric Energy | Electricity | Wind Turbines Explained | Wind Mill | Wind Mill History | Wind Turbines Structure | Electric Energy | Wind Energy | Wind Generated Electricity | Wind Turbines Video For Kids | Video For Kids | Science Videos | Best Kids Show | Dr Binocs Show | Peekaboo Kidz

Hey kids, in this video, Dr Binocs will explain How Do Wind Turbines Work? | The Dr Binocs Show | Peekaboo Kidz

Make sure you watch the whole video to know all the answers to your curious questions!

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Efficiency of a Machine
https://www.tutorialspoint.com/videotutorials/index.htm
Lecture By: Mr. Pradeep Kshetrapal, Tutorials Point India Private Limited
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