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Author Topic: Geothermal Power  (Read 1968 times)

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AGelbert

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Re: Geothermal Power
« Reply #15 on: August 08, 2014, 03:01:14 am »
Construction Begins on World’s Largest Geothermal Plant

SustainableBusiness.com News


It's been a long time coming, but with financing secured, construction will finally begin on the world's largest geothermal power plant - the Sarulla Geothermal Power Project in Indonesia.

In the works since 1990, the $1.2 billion, 330 megawatt (MW) project is about to break ground, with the first phase online in 2016 and the entire project by 2018.

http://www.sustainablebusiness.com/index.cfm/go/news.display/id/25849

 
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AGelbert

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Re: Geothermal Power
« Reply #16 on: September 25, 2014, 03:37:00 pm »
There PLENTY of HEAT down there for ALL our energy needs!

SciShow takes you down the deepest hole in the world - Russia's Kola Superdeep Borehole - explaining who dug it and why, and
what we learned about Earth in the process, such as the layers of water, created out of super high-pressures, from the hydrogen and oxygen squeezed out of the surrounding rock strata, a phenomenon never before observed; also found were single-celled animals, found not in the customary limestone deposits of former oceans but likely preserved, due to the extraordinarily high pressures.

By the time the geologists got to the 12-km-deep (7.45 miles) area, where the rock dated 2.7 nillion years old, the temperatures down there were extremely hot - 180 degrees Celcius/356 Fahrenheit and the "rock," at that depth, according to the geologists, behaved more like "plastic."

http://www.youtube.com/watch?v=zz6v6OfoQvs&feature=player_embedded

[embed=853,480]<iframe width="853" height="480" src="http://www.youtube.com/embed/zz6v6OfoQvs" frameborder="0" allowfullscreen></iframe>[/embed]
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AGelbert

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Re: Geothermal Power
« Reply #17 on: September 26, 2014, 09:11:21 pm »
In regard to world events and profit over planet greed based stupidity this whole world bloodfest is, and always has been, about who has the AUTHORITY (see legal tender laws with a gun pointed at out happy heads) to issue money. And let me quickly add that it is NOT, and never has been, about the RESOURCES for energy and whatever, as many incorrectly claim. Say WHAT!!?

Why would I make such an "irrational" statement? BECAUSE there are PLENTY of resources to go around and have a sustainable, steady state economy. The only reason we DON'T have one is because TPTB have a SYSTEM that started with that log Little John wanted to charge Robin Hood to cross. Sure, you believe TPTB have their hand in our pocket 24/7 BUT, you understandably might think we are short on resources, which causes us to fight for them in order be the King of the Currency issuing Hill that controls all that. Nope.

The post before this one has an excellent video about the deepest borehole on earth.    There are TWO ways to deal with providing energy for life forms like us that need to stay warm in winter, cool in summer, make things and move about.
1) INSULATION
2) Energy harvesting from some process like burning fossil fuels or Renewable Energy devices.

TPTB NEED item "2)" because TPTB CONTROL the energy spigot with weapons, wars and the power to issue currency.

True. those two items have a bit of overlap but the important thing is that when you vastly increase energy insulation, you vastly DECREASE the demand for CENTRALIZED ENERGY. Centralized energy is the mother's milk of TPTB. It gives AUTHORITY and POWER to TPTB to wage wars for "profit" (a lie when the costs to biosphere are tallied), control our behavior and decide what is money and what ain't!   

Still don't see it? Okay, build a house with a hole in the basement 200 feet down ANYWHERE ON EARTH. Passive (you don't need to boil water! ) geothermal with a heat pump will keep you warm as toast in winter and cool in the summer. Add PV and a small wind turbine if necessary with a battery bank and you have the energy to charge your electric car, run all your appliances and the heat pump machinery. Finally, the excess power generated can be used to pump water into a tank that can also be considered a 'battery' with infinite recharge cycles.


The house, if insulated like the Norwegian houses are required to be by code, won't need a lot of energy to heat and cool anyway. BUT, you may want to NOT insulate it quite that well if you have extra geothermal power to play with. A less 'tight' house lessens your risk of improper oxygenation and/or radon gas build up (a big problem here in Vermont).

IF ALL the houses are built this way, the grid becomes a BACKUP, if it survives at all.  ;D  The maintenance of that system is PEANUTS compared with furnace and internal combustion car engine maintenance, never mind all the money sucked out of us for millions of miles of power lines to build and maintain with transformers and whatnot.

The initial cost, if amortized over a thirty year period into the mortgage, is CHEAPER than paying for heating oil, furnace maintenance, gasoline, engine maintenance and grid power for thirty years; MUCH, MUCH CHEAPER!


So why isn't it done? Because you CANNOT jack up energy prices on distributed energy systems.  ;D That means you cannot FORCE people to pay more. That means you cannot FORCE people to pay to make weapons to bomb other countries to get energy resources for centralized power plants that are NO LONGER NEEDED.  ;D  It's a real BUMMER for the fossil fuel Powers that BE!

They'd be forced to do crazy **** like England did a few centuries ago to suck money out of people; a tax was levied on the SIZE OF THE WINDOWS in people's houses for the CROWN.   ::)  :P   

I repeat, over and over, WE-THE-PEOPLE are the cash cow of TPTB. THEY are the lazy, welfare queen, parasites that need to sell us the bull**** that we need them, their wars and their centralized energy.

As far as energy availability, thermodynamically speaking, we DON'T have a resource problem. But just let Agelbert go out there and set up a geothermal/PV/wind/water tank battery system and TRY get BANK prime rate thirty year financing to tack on to any existing mortgage or new home mortgage and I will be TAXED six ways from Sunday or make it "against some ordinance" to PREVENT me from doing that.

That is what the fossil fuelers have done for over a century. Farmers didn't need Rockefeller's CRAPPY fuel. They made their own! SO TPTB make it illegal! Same with hemp and hundred of other renewable energy solutions.

Even that GUN to our heads is, in the final analysis, BALONEY TOO! Why do you think the fossil fuelers of this world constantly harp on our alleged "demand" for energy while studiously ignoring the OBVIOUS fact that right beneath anybody that lives on this planet is enough passive geothermal to eliminate ALL the need for heating oil and the ENTIRE industry of fossil fuel furnaces?

Because they NEED us to BELIEVE that in order to stay in the energy driver's seat. Thanks to people like me and many others that call bull**** on TPTB, they are losing their propaganda advantage. When that goes, they are done.

I just hope it's not too late. TPTB are wicked people, and will do their damnedest to kill every person that exposes their energy resources scarcity SCAM used to foment wars, price shocks and centralized fossil fuel pollution. My voice is too small to be considered a threat. But even so, they send their paid TOOLS here to try to ridicule the truth.

Finally, think about this for a moment. A nuclear power plan needs 600C to make the high pressure steam to produce over a gigawatt of power. Russia had MUCH MORE heat than that available and they plugged the hole.  :evil4:  And yeah, the HAVE the anti-corrosion piping needed to get all the heat they needed for over a century with next to NOTHING in maintenance costs compared with a radioactive monster like a nuke power plant or a centralized fossil fuel pollution factory. They didn't do it because people would CATCH ON that geothermal energy power is UBIQUITOUS. 

The emperor has no clothes. Sure, he has a real gun pointed at us but most people are toeing the line because they believe the bull**** about not being able to be energy independent with renewable energy anywhere on this planet. That LIE is ENFORCED by the government playing whack-a-mole with anyone who proves it can be done (Taxation, fees, city ordinances, etc   ). The 'Renewable energy "subsidies" that the Fossil fuelers like to disparage and moan about are WINDOW DRESSING. What dirty energy gets is the real subsidy gravy train but you'll never get Mendacious Fossil Fuelers to admit it.

I'm toeing the line because I'm not allowed to dig deep holes for geothermal energy on my rented property.  :(

I may be ahead of my time, but I'm right.
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AGelbert

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Re: Geothermal Power
« Reply #18 on: December 03, 2014, 06:57:15 pm »
Geothermal Visual: Jobs Created by Power Plants

 Leslie Blodgett 
 December 03, 2014  |  1 Comments 



The graph above shows jobs created at actual geothermal power plants using information GEA collected over the last few years; companies are kept anonymous to protect proprietary information. View this along with presentations to the Committee on Earth Sciences at dels.nas.edu.

1 Comments

 A. G. Gelbert 

 December 3, 2014 

The fantastic geothermal renewable energy potential, both active (600 degrees C) and passive, has been IGNORED by the US Government for well over 50 years since it spent millions studying it.

I'll give you a couple of pictures with U.S. Department of Energy data for you to contemplate. The U.S. Government doesn't just own 28% of all the land in the USA, it owns over 90% of all the land with maximum active geothermal potential.



As of March 2012, out of the 2.27 billion acres in the country, about 28% of the total was owned by the Federal government according to the Interior Department.

And THAT 28% that has VAST Renewable Energy potential in geothermal, wind, solar, hydro and biomass (along with giant offshore and coastal current undersea turbine potential) has been used almost EXLUSIVELY for so-called fossil fuel resources, ALL of which are profit over planet crapitalist plays for CORPORATIONS, not we-the-people.

Those lands BELONG to we-the-people but are being TRASHED in rampant, polluting, biosphere endangering exploitation for fossil fuels.

Don't you think this is somewhat WRONG!!? Don't you think it's time to STOP crapitalizing those lands and DEMAND that they be CONSERVED, Cared for and used EXCLUSIVELY for Renewable Energy so the wildlife on them and we-the-people get an IMPROVED biosphere instead of a diseased and dying one from dirty energy (including nuclear!) industry produced poisons?

We need to get our priorities straight. Business as usual (see graphic below) is suicidal.



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AGelbert

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Re: Geothermal Power
« Reply #19 on: December 18, 2014, 11:54:09 pm »
The Dream Becomes Real: Touring the Newberry Enhanced Geothermal Site

Quote
Tucked away in remote Oregon, the AltaRock Newberry EGS project has been shrouded in rumors and secrecy, but a recent tour of the facility revealed that the technology is very much real and making great strides.

 Meg Cichon, Associate Editor, RenewableEnergyWorld.com 
 December 15, 2014

Excellent article at link:

http://www.renewableenergyworld.com/rea/news/article/2014/12/the-dream-becomes-real-touring-the-newberry-enhanced-geothermal-site?cmpid=GeoNL-Thursday-December18-2014
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AGelbert

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Re: Geothermal Power
« Reply #20 on: January 08, 2015, 09:58:51 pm »
China’s Geothermal Energy Sector Demonstrates Great Growth Potential

 Liu Yuanyuan, International Correspondent 
 January 08, 2015 

BEIJING -- The first China Geothermal Forum, with a focus on innovation and leadership across the sector as well as on driving the sustainable development and utilization of the energy, was recently held in Beijing. According to data released by the forum, the country is expected to develop a heating and cooling area powered by the geothermal energy of up to 500 million square meters and increase installation capacity based on geothermal power generation to 100,000 kilowatts by 2015.

Liu Qi, deputy director of the National Energy Administration of China, pointed out at the forum that the twin issues of environmental pollution and climate change are making geothermal a favorable choice as the country improves energy efficiency, adjusts the energy structure and develops clean energies. Qi said that it is an opportune time to promote the sustainable development and utilization of geothermal energy, as China is home to a variety of abundant geothermal resources that are well-distributed across the country. The growth potential of geothermal means that the technology could play an increasingly important role in reducing the existing high level of pollution and promoting an ecological consciousness.

Data shows that about one sixth of the world's geothermal resources are located in China, and it leads the world in direct-use volume, according to China Academy of Engineering research fellow Cao Yaofeng. However, the country has lagged in geothermal power development, and as a result in 2010 it ranked only 18th worldwide in terms of geothermal power installed capacity.

Over the last few years, the central government as well as several local governments have revised and issued a series of policies, regulations and technological specifications, including the Renewable Energy Law, that aim to boost healthy development. The recently released China-U.S. Joint Statement on Climate Change revealed that China expects its CO2 emissions to peak around 2030  while the country is making every effort to reach that peak as early as possible. The country also plans to increase the portion of non-fossil energies that account for the total consumption of non-renewable resources to 20 percent by 2030.

Liu Qi also revealed that the country aims to achieve an annual utilization volume of geothermal resources of up to 50 million tons of standard coal equivalent by 2020 and 100 million tons by 2030. Energy experts attending the forum said that the country has the potential to significantly develop the geothermal resources to a point where it would have a realistic bearing on the energy structure. The next step is to discuss the necessary technologies and practical issues in the development and utilization of the geothermal resources in order to achieve the best results.
http://www.renewableenergyworld.com/rea/news/article/2015/01/chinas-geothermal-energy-sector-demonstrates-great-growth-potential#comment-139019
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AGelbert

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Re: Geothermal Power
« Reply #21 on: February 20, 2015, 06:32:24 pm »

"Capacity factor” refers to a measure of actual output over a period of time. Capacity factors for various types of energy systems, as recorded by DOE and NREL, are given in the visual above.

The capacity factor of geothermal power facilities is very efficient  and is usually at or above 90 percent.   :o 

This is on par with or higher than other baseload power sources like coal and nuclear and is much greater than intermittent sources.  ;D
http://www.renewableenergyworld.com/rea/blog/post/2015/02/geothermal-visual-capacity-factors-for-assorted-energy-systems
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AGelbert

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Re: Geothermal Power
« Reply #22 on: February 26, 2015, 01:51:47 pm »
Geothermal Saves Kenya $24 Million of Fuel Monthly  ;D, Says KenGen

 Charles Wachira, Bloomberg 
 February 18, 2015  |  1 Comments 

Nairobi, Kenya -- New power-generating units at Kenya’s Olkaria I plant are saving East Africa’s biggest economy about 2.2 billion shillings ($24 million) a month on fuel costs, according to the country’s biggest electricity producer.

A fourth and fifth unit at Kenya Electricity Generating Co.’s Olkaria I geothermal plant, which each started providing 70 megawatts of capacity in October and December, are reducing reliance on fuel used in hydropower generation, Chief Executive Officer Albert Mugo told reporters Monday in the capital, Nairobi. The facilities will be inaugurated on Feb. 19, he said.

The fuel-cost component associated with hydropower generation “has fallen to a low of 2.51 shillings per kilowatt-hour by this February, which represents a drop of 65 percent,” he said.

KenGen’s expansion plan is part of a broader national program to add 5,000 megawatts to Kenya’s current capacity of 1,664 megawatts by 2017. Geothermal, or heat-generated, power accounts for 51 percent of electricity generated in Kenya, displacing hydropower as the largest source, Mugo said.

KenGen, 70 percent state-owned, plans to raise 30 billion shillings, half of which will come from the sale of stock to existing shareholders.

“We are waiting for government to inform us when they will take their rights,” Mugo said. “We are hoping this will happen within the next two weeks.”

Copyright 2015 Bloomberg

http://www.renewableenergyworld.com/rea/news/article/2015/02/geothermal-saves-kenya-24-million-of-fuel-monthly-says-kengen#comment-140275


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Re: Geothermal Power
« Reply #23 on: May 21, 2015, 11:36:34 pm »
Geothermal Piping Systems Get into the Groove

May 8, 2015

By Alfred Chua

How do you design outdoor piping to account for changing elevation, uneven terrain, seismic and thermal movement, and the reroutes required of a drilling fluid system? This was the challenge faced by engineers and contractors for Indonesia's largest geothermal power plant, Wayang Windu. The pipe-joining method would need to offer flexibility and superior maintainability, and project personnel sought a method that would not be susceptible to inclement weather or pose undue safety hazards. Welding and flanging couldn't meet those parameters, but a solution was found in grooved mechanical piping.

Harnessing Indonesia’s Geothermal Potential

Located on the Ring of Fire and home to more than 200 volcanoes, Indonesia is estimated to have about 28 GW of geothermal potential for power generation , which is about 40 percent of the geothermal potential for the entire world. 41 volcanoes are found on the island of Java alone, providing abundant geothermal resources and holding the highest potential for energy production. Fittingly, this reflects the locale’s demand for energy. Home to 135 million inhabitants — about 60 percent of Indonesia’s population — Java is one of the most densely populated areas in the world. To meet energy demand, geothermal plants have been expanding to increase output.


Wayang Windu Geothermal Power Plant in Indonesia.

The Wayang Windu Geothermal Power Plant sits in the heart of this activity in Pangalengan, West Java. A Star Energy plant, Wayang Windu is a flash steam power plant listed as one of the largest in the world. Currently a two-unit site with exploration for unit 3 underway, Wayang Windu has a total installed capacity of 227 MW. The first unit was completed in 1999 and has been producing at full capacity of 110 MW since 2000. The second unit, with capacity of 117 MW, was been online since 2009.

While the need for geothermal energy is clear, construction or expansion of plants, wells and the piping systems that connect them often presents several challenges that must be considered in the design phase.

Piping System Design Challenges


Located in a highly active seismic zone, Wayang Windu experiences shifts in the ground, both subtle and extreme, on a daily basis. The power plant’s buildings and infrastructure are designed to absorb this movement, but other necessary components — long stretches of outdoor piping, for example — don’t afford the same flexibility. In addition to seismic movement, outdoor piping systems are subject to thermal expansion and contraction that must also be accommodated.


The piping system near the Wayang Windu Geothermal Power Plant in Indonesia.  Credit: Victaulic.

The Wayang Windu site sits at an altitude ranging from 1,700 to 2,200 meters above sea level, with piping systems spanning a significant portion of that elevation change. Joint or pipe flexibility would be ideal to enable the systems to easily follow the contours of the uneven terrain.

At Wayang Windu, the drilling fluid piping system traverses the field to enable the circulation of lubricating fluids — primarily condensate — for drilling and repair work. As exploration continues, personnel would need to be able to dismantle and reassemble the piping system to account for rerouting and expansion.

All told, the requirements for the drilling fluid system were flexibility to withstand seismic and thermal movement and accommodate changing grades, and maintainability to ease system reroutes and extensions. As an outdoor piping system, it also had to withstand the elements. Galvanized pipe was specified to resist corrosion and wear.

Engineers quickly realized that welding, often considered the default pipe-joining method, would pose problems.
Welding produces rigid joints that would not provide the flexibility to accommodate thermal and seismic movement. When such movement is not properly accounted for, stress at the joints can result, in some cases leading to leaks. The uneven terrain could also have caused misalignment issues during assembly, necessitating quite a bit of rework and slowing the construction schedule.

Welding galvanized pipe vaporizes the protective zinc coating near the welds, which would require additional time to repair in the field. The safety issues associated with welding were also a concern. Welding galvanized steel exposes the worker to fumes that can lead to “metal fume fever,” and the sparks produced could pose a fire hazard to the dense jungle surrounds during the dry season. Adverse weather conditions during the wet season could also affect welding activities, requiring additional protective measures.

Finally, the permanent joints produced by welding would not permit the pipeline to be easily relocated or expanded, a requirement that could not be compromised.

Flanging provides a more maintainable joint that permits the dismantling and reassembly of piping, but the method is subject to some of the same limitations as welding in terms of flexibility. Flanges, like welded joints, are rigid, so the joining method requires additional devices or expansion loops to accommodate piping deflection caused by movement. Routing piping systems joined with flanges over uneven terrain is just as challenging as it is with welding.

Grooved Piping Offers Flexibility, Maintainability

To alleviate these problems, grooved mechanical piping was specified for the drilling fluid system. The engineer and contractor discovered that the design, installation and maintenance benefits of flexible grooved mechanical couplings stood in direct contrast to the issues associated with welding and flanging. Flexible couplings enable quick, easy assembly and disassembly without heat or flame, and permit controlled linear and angular movement at the joint.

A grooved mechanical pipe joint consists of four elements: grooved-end pipe, a gasket, coupling housing, and nuts and bolts. The pipe groove is made by cold forming or machining a groove into the end of a pipe. A gasket is centered around the joint of two abutted grooved pipe-ends, and the coupling housing segments are placed over the gasket so that the key sections of the housing engage the grooves. The bolts and nuts are then tightened with a socket wrench or impact wrench. In the installed state, the coupling housing encases the gasket and engages the grooves around the circumference of the pipe to create a leak-tight seal in a self-restrained pipe joint. The completed joint is visually inspected; metal-to-metal bolt-pad contact confirms proper assembly.

Standard grooved couplings can be installed up to five times faster than welded joints and three times faster than flanged joints.
Ready-to-install couplings, a recently developed technology that allows the coupling to be pushed onto the pipe-end as a fully assembled unit, can double the time savings.

Grooved couplings do not require heat or flame to assemble, nor does installation produce fumes, reducing risk to personnel and property.
They can also be installed in any weather condition without tents or heating equipment.

Grooved couplings create a union at every joint so that when maintenance or system alteration is required, the couplings can be removed by loosening the nuts and bolts and removing the housing and gasket from the joint. The removal of two adjacent couplings permits the removal of a section of pipe. Grooved-end pipe and couplings can be reused, with assembly following the same procedure as initial installation.

Flexible grooved couplings permit a limited amount of linear and angular movement. The interaction of the components permits this movement: the dimensions of the coupling key are narrower than the groove in the pipe, allowing room for the key to move within the pipe groove, while the width of the coupling housing allows for pipe-end separation, leaving room for controlled expansion, contraction and deflection.

Independent testing conducted at the ATLSS center, a member of the NEES (Network for Earthquake Engineering Simulations) testing group, demonstrated the reliability of grooved system components when exposed to seismic movement. Water-filled assemblies joined with grooved couplings were pressurized to 200 psi and exposed to accelerations up to 50 percent greater than the Northridge, California, earthquake. No pressure loss or leakage was observed during the tests.

The Outcome


Victaulic Style 77 flexible couplings and grooved-end fittings were used to join the drilling fluid system at Wayang Windu, meeting the requirements for flexibility and maintainability and offering additional benefits on site.

Style 77 couplings feature a two-piece housing, two nuts and bolts, and can withstand pressures of up to 1,000 psi. The couplings provided the inherent flexibility needed to accommodate seismic and thermal movement and deployment of the drilling fluid system over the uneven terrain at Wayang Windu.

The ease and speed of installation of grooved components contributed to rapid completion of the project and eliminated construction delays due to rain. Welding machinery did not need to be transported along the length of the pipeline as it was assembled, and the galvanized finish on the piping was maintained throughout the installation process, ensuring corrosion resistance and protection throughout the system. The lack of hot works also eliminated safety issues and fire hazards.

The drilling fluid system has been in operation for 15 years with the original pipe and couplings still in use. Victaulic couplings were also used to join the 9-kilometer condensate piping system and the 8-kilometer brine system for unit 2, which have been in operation since 2009.

The drilling fluid system was recently rerouted as part of the unit 3 exploration process, validating the maintainability of grooved piping systems. Sections of pipe were dismantled and repositioned, helping to achieve production targets. New sections of pipe were grooved off-site, and shipments were coordinated to further improve jobsite efficiency, limit downtime and reduce overall costs.

Summary

Seismic and thermal movement, changing elevation, uneven terrain, and the need to disassemble and relocate the piping system contributed to a complex construction scenario. Grooved mechanical piping was the answer to the installation challenges, providing the requisite flexibility and maintainability.

Like geothermal energy itself, grooved piping systems are reliable, efficient and sustainable.
The use of grooved piping is increasing on utility and process piping systems in the power industry, and Wayang Windu demonstrates the value such systems can bring to plant construction and expansion. 

http://www.renewableenergyworld.com/articles/2015/05/geothermal-piping-systems-get-into-the-groove.html?eid=291054632&bid=1077418
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Re: Geothermal Power
« Reply #24 on: June 04, 2015, 11:59:18 pm »

Paris Geothermal Boom Brings Deep Drilling to Crowded Suburbs  ;D


June 2, 2015

By Tara Patel, Bloomberg

PARIS — Squashed between a highway overpass and a towering suburban shopping center east of Paris, a drilling rig is completing the second of two geothermal wells aimed at capturing the earth’s natural heat for homes and offices.

The project is one of five around the French capital being built by Engie, the new name for GDF Suez SA, accelerating a geothermal boom in the region. Greater Paris already boasted the world’s largest concentration of deep geothermal wells linked to heating networks, even before these latest additions. An energy law making its way through the French parliament that seeks to spur rewewable energy could lead to more.

“This is the most active period for geothermal in two decades,” Damien Terouanne, head of Engie’s Cofely Reseaux unit that specializes in heating and cooling networks, said in an interview. “The geology of the Paris region is favorable and its population density makes projects worthwhile.”

The two 1,800-meter (5,900-feet) wells at Rosny-sous-Bois will provide about half the heating needs for the equivalent of 10,000 homes in the area, along with neighboring Noisy-le-Sec and Montreuil, according to a presentation on the project. State subsidies of 6.5 million euros ($7.1 million) will help fund the 35 million-euro cost.

The geothermal doublets built around Paris use one well to pump warm water from underground for heating and the second to push cooled water back underground. About 30 geothermal sites were built around Paris in the early 1980s. Some were plugged because of financial and technical problems.

EDF Development


Electricite de France SA is also developing a new project at Bagneux, south of Paris. Nearby, independent utility Semhach SA operates a geothermal heating network with two new wells for the towns of Villejuif, Chevilly-Larue and L’Hay-les-Roses. New projects will bring the number around the French capital to about 40 by the end of this year, environment agency Ademe says.

With a capacity of 10 megawatts, Engie’s Noisy-le-Sec plant is part of a plan to double its geothermal capacity around Paris to about 100 megawatts in 2016, Terouanne says. Drilling is complete at another of its projects at Arcueil and Gentilly, south of the capital.

Geothermal heat for homes will be competitive with natural gas,
according to Joelle Colosio, director of Ademe’s Paris- region office. Subsidies decided by the government fund about a fifth of the cost of projects including drilling insurance and have helped get geothermal “back on the map.”


Some new projects in the region are also seeking to exploit warm water closer to the surface, Colosio said in an interview. One project in the Batignolles neighborhood of inner Paris is for two wells about 800-meters deep to heat some 3,000 homes.

Copyright 2015 Bloomberg

http://www.renewableenergyworld.com/news/2015/06/paris-geothermal-boom-brings-deep-drilling-to-crowded-suburbs.html
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AGelbert

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Re: Geothermal Power
« Reply #25 on: August 04, 2015, 10:37:43 pm »
World’s First Integrated Geothermal and Biomass Plant Goes Online   ;D

August 3, 2015

SNIPPET:

It is projected that the integration of the biomass plant will boost the overall Cornia 2 geothermal plant output by some 30 gigawatt hours (GWh) a year. It will also mitigate the emission of 13,000 tonnes of CO2 annually. This innovative technological approach will result in minimal local environmental impact and secure “total renewability” within the resources used and the cycle of energy generation.
   

http://www.renewableenergyworld.com/articles/2015/08/world-s-first-integrated-geothermal-and-biomass-plant-goes-online.html
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AGelbert

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Re: Geothermal Power
« Reply #26 on: August 09, 2015, 04:44:53 pm »
Quote
As with any heat pump, geothermal heat pumps are able to heat, cool, and, if so equipped, supply the house with hot water. Some models of geothermal systems are available with two-speed compressors and variable fans for more comfort and energy savings. Relative to ASHPs, they are quieter, last longer, need little maintenance, and do not depend on the temperature of the outside air.

Quote
Geothermal heat pump systems have an average 20+ year life expectancy for the heat pump itself and 25 to 50 years for the underground infrastructure. Additionally, they move between three and five times the energy they consume    between a building’s interior space and the ground.

Guide to Geothermal Heat Pumps

http://energy.gov/sites/prod/files/guide_to_geothermal_heat_pumps.pdf
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Re: Geothermal Power
« Reply #27 on: August 09, 2015, 06:25:52 pm »
Geothermal HVAC Myths Busted   ;D

1.     Geothermal HVAC systems are not considered a renewable technology because they use electricity.

Fact: Geothermal HVAC systems use only one unit of electricity to move up to five units of cooling or heating from the earth to a buiding.

2.     Photovoltaic and wind power are more favorable renewable technologies when compared to geothermal HVAC systems.

Fact: Geothermal HVAC systems remove four times more kilowatt-hours of consumption from the electrical grid per dollar spent than photovoltaic and wind power add to the electrical grid. Those other technologies can certainly play an important role, but geothermal HVAC is often the most cost effective way to reduce environmental impact of conditioning spaces.

3.     Geothermal HVAC needs lots of yard or real estate in which to place the polyethylene piping earth loops.

Fact: Depending on the characteristics of the site, the earth loop may be buried vertically, meaning little above-ground surface is needed. Or, if there is an available aquifer that can be tapped into, only a few square feet of real estate are needed. Remember, the water is returned to the aquifer whence it came after passing over a heat exchanger, so it is not “used” or otherwise negatively impacted.

4.     Geothermal HVAC heat pumps are noisy.

Fact: The systems run very quiet and there is no equipment outside to bother neighbors.
A technician inspects a geothermal HVAC air handler. Photo courtesy of Jay Egg

5.     Geothermal systems eventually “wear out.”

Fact: Earth loops can last for generations. The heat-exchange equipment typically lasts decades, since it is protected indoors. When it does need to be replaced, the expense is much less than putting in an entire new geothermal system, since the loop or well is the most pricey to install. New technical guidelines eliminate the issue of thermal retention in the ground, so heat can be exchanged with it indefinitely. In the past, some improperly sized systems did overheat or overcool the ground over time, to the point that the system no longer had enough of a temperature gradient to function.

6.     Geothermal HVAC systems only work in heating mode.

Fact: They work just as effectively in cooling and can be engineered to require no additional backup heat source if desired, although some customers decide that it is more cost effective to have a small backup system for just the coldest days if it means their loop can be smaller.


7.     Geothermal HVAC systems cannot heat water, a pool, and a home at the same time.

Fact: Systems can be designed to handle multiple loads simultaneously.


8.     Geothermal HVAC systems put refrigerant lines into the ground.

Fact: Most systems use only water in the loops or lines.

9.     Geothermal HVAC systems use lots of water.

Fact: Geothermal systems actually consume no water.
If an aquifer is used to exchange heat with the earth, all the water is returned to that same aquifer. In the past, there were some “pump and dump” operations that wasted the water after passing over the heat exchanger, but those are exceedingly rare now. When applied commercially, geothermal HVAC systems actually eliminate millions of gallons of water that would otherwise have been evaporated in cooling towers in traditional systems.

10.  Geothermal HVAC technology is not financially feasible without federal and local tax incentives.

Fact: Federal and local incentives typically amount to between 30 and 60 percent of total geothermal system cost, which can often make the initial price of a system competitive with conventional equipment.
Standard air-source HVAC systems cost around $3,000 per ton of heating or cooling capacity, during new construction (homes usually use between one and five tons). Geothermal HVAC systems start at about $5,000 per ton, and can go as high as $8,000 or $9,000 per ton. However, new installation practices are reducing costs, to the point where the price is getting closer to conventional systems under the right conditions.

Factors that help reduce cost include economies of scale for community, commercial, or even large residential applications and increasing competition for geothermal equipment (especially from major brands like Bosch, Carrier, and Trane). Open loops, using a pump and reinjection well, are cheaper to install than closed loops.

http://energyblog.nationalgeographic.com/2013/09/17/10-myths-about-geothermal-heating-and-cooling/
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AGelbert

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Re: Geothermal Power
« Reply #28 on: August 09, 2015, 07:53:09 pm »
Modern ELECTRICALLY POWERED heat pumps will soon replace ALL fossil fuel powered heating.  ;D

https://youtu.be/rNPwkJMrGvk

https://youtu.be/GmDfCxp6rDs

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Re: Geothermal Power
« Reply #29 on: October 20, 2015, 03:18:07 pm »

Let The Earth Heat and Cool Your Home
Geo Exchange is a system of heating and cooling that uses water and ground loops to use the earth as a heat sink or heat source in the winter. It sinks heat into the ground in the summer, as well as heating your hot water year round. Water is circulated through polyethylene pipes in closed loops that are installed below the ground. The loops are connected to an extended range water source heat pump.

The environmental benefits are that this system is non-polluting, has no exhaust emissions, reduced CO2 emissions and requires a smaller amount of both power and refrigerant than conventional systems. The upfront capital costs for a geo exchange system are 35-40% more, but annual savings with a system like this are about 60% over conventional heating and cooling costs.

The payback for the system in this video was 6 years, and now the owner is making money on it.    ;D

--Bibi Farber This video was produced by Fair Companies

http://www.nextworldtv.com/videos/energy/geo-exchange.html#sthash.v5fbbZi0.dpuf
Quote


In U.S. homes, natural gas is the most widely used energy source (49%), followed by the secondary energy source, electricity, at 39%. That’s reversed in commercial buildings, where electricity (55%) is depended on more than natural gas (32%).

The energy needs for these different buildings vary but when viewed as a whole, more than half of the energy used in commercial buildings goes to just heating (36%) and lighting (21%). Within this sector, retail stores and service buildings use the most total energy (20%), followed by office buildings (17%) and schools (13%).
http://needtoknow.nas.edu/energy/energy-use/home-work/

Renewable Energy NEGA-watts (energy NOT used because it WASN'T NEEDED for passive geothermal applications in heating and cooling or other Renewable energy technologies) is NOT an energy unit for energy unit REPLACEMENT. That is because MUCH LESS ENERGY is being used to heat and cool the same space that fossil fuels used to.

But thermodynamically challenged enemies of Renewable Energy will continue to place a false equivalence on the fossil fuels versus Renewable Energy.  ::)  So it goes.   :P
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