Posted by: wakewan | July 27, 2010

The ITER Project – Fusion Folly or, Fusion Future?

I listened to a report on NPR this morning about the promise of clean, near unlimited energy derived from nuclear fusion.  That’s right, the power of the sun.  I was surprised by the report.  First, I haven’t heard much about fusion in a long time.  And, there’s a major, multi-national, multi-billion dollar project in the South of France called ITER, “a large-scale scientific experiment that aims to demonstrate that it is possible to produce commercial energy from fusion.”   

I have never even heard of ITER and had no idea that such large-scale research was underway until this morning.  The ITER Fusion Research Collaboration is funded by China, the European Union, Japan, Korea, Russia and the United States.  The report I heard this morning mentioned that it is being funded to the tune of $17 billion and is already over budget and behind schedule.

I am intrigued by the idea.  Of course it would be great if we could produce electricity from clean, abundant nuclear fusion.  But, my first thought is why don’t we invest this kind of money in energy technologies that are quite so far away from commercial viability, or that are proven already?  Or, how about investing $17 billion in energy efficiency? 

This was mentioned in the report.  A senior US official mentioned his skepticism about this project.  His message was something like (I’m paraphrasing):  Sure it could work – someday.  But, why not invest in solar and wind technology which are much farther along in terms of their commercial viability to offset fossil fuel based energy production?  I would add to that list geothermal energy.  Why solar and wind is always mentioned – and not geothermal too – when people discuss renewable energy baffles me.  But I digress.

Again, I don’t want to sound defeatist and cynical about the future of nuclear fusion but, there’s a running joke amongst the cognescenti about harnessing nuclear fusion and, it goes something like “It’s 30 years away. It will always be 30 years away.”  Research into controlled fusion for civilian purposes started in the 1950s and, obviously, continues to this day.  That means we have had 60 years to figure this out.  In these 60 years, we have trusted our leaders to make good choices about energy policy.  I am not sure they have earned this trust.

My take away from all this is:
1.) I think we should be investing big money like this on energy production technologies and efficiencies that are here and now.
2.) The geothermal lobbyists are doing a crappy job.  Solar & wind are not the only viable renewables people!  We can’t have wind farms everywhere.  We can’t have solar everywhere.  We can’t put a geothermal power plant anywhere.  We need a balanced approach for all three.
3.) Nuclear fusion is probably 30 years away…and God knows how many investment dollars away.

Posted by: Svava | July 22, 2010

The Iceland Deep Drilling Project (IDDP)

There’s a long-term research project being conducted in Iceland.  The main goal of which is to drill 4-5 km below the earth’s surface to reach  to hydrothermal fluids at temperatures ranging from 450°C to ~600°C.

The IDDP project is being conducted by a consortium of three Icelandic energy companies:  HS Orka, Landsvirkjun (National Power Company) and Orkuveita Reykjavíkur (Reykjavik Energy).  The project has received funding from the ICDP (International Continental Scientific Drilling Program) as well as Alcoa, Inc. and and StatoilHydro ASA (now Statoil), a Norwegian oil company.  One of the main geothermal drilling consultants for the project is Mannvit Engeering who’s responsible for well design, drilling activities, study of technology for fluid handling and evaluation.

The IDDP website describes the projects as follows: 
“The main purpose of the IDDP project is to find out if it is economically feasible to extract energy and chemicals out of hydrothermal systems at supercritical conditions. To study the supercritical hydrous fluid, an advanced drilling technology needs to be applied and a novel fluid handling and evaluation system designed. The improvement of this basic idea by the IDDP is to drill deep enough into the roots of a conventional high temperature hydrothermal system to produce water at supercritical conditions and bring it to the surface as 400-600°C superheated steam, at subcritical pressures (<220 bar).”

The point of this project, in layman’s terms, is to improve the economics of power production from geothermal fields.  That is, by drilling deeper, to a much hotter part of a geothermal system, and bringing superheated steam (400-600°C) to the surface at pressures that won’t tear a generator to pieces, a power plant will produce more electricity.  This makes investment in geothermal energy much more attractive to investors because it seriously truncates the recovery time of their investment i.e., investors start making money sooner.
 
A typical geothermal well, in Iceland, is drilled to approximately 2.5 km and produces approximately 5 MWe (mega watts of electricity).  By drilling deeper and tapping much higher temperatures, that power output could be 10 fold increase.  It is theorized that tapping a supercritical reservoir above 450 °C would produce approximately 50MWe.  These numbers bring the importance of the IDDP project into focus.

Recently, flow tests began on the first full scale well (IDDP-1) in Iceland at an area called Krafla.  The well is producing 30 kg/s of 330 °C superheated steam (much higher than normal for Iceland) at 16.5 bar-g pressure.  And, the temperature is still rising.  According to the IDDP website, this corresponds to ~20 MWe.   Here’s a link to the YouTube video showing the steam rising from the well.

Posted by: Svava | July 6, 2010

Hungary Goes Geothermal

An important development in Hungary’s move toward utilizing their abundant geothermal resources was announced this week.  In the town of Szentlőrinc, a groundbreaking ceremony was held to herald the beginning of construction of the first geothermal district heating plant.  The cornerstone was laid by some attending dignitaries including, Mr. Össur Skarphéðinsson, Foreign and External Trade Minister of Iceland, Pál Kovács, Deputy Secretary of Energy Policy from the Ministry of Development and, Dr. Márk Győrvári, the Mayor of Szentlőrinc.  This geothermal district heating project will fully replace the current natural gas-powered district heating system with clean, sustainable geothermal hot water.

This project on a macro scale, represents a significant cooperative effort between Iceland and Hungary, both working towards the EU directives on alternative energy and energy security in the EU zone.  On a micro scale, it is a significant move and commitment on behalf of the Hungarian government as well as public investment entities to tap the significant geothermal energy potential in the Pannonian basin – moving the country toward greater energy independence and environmental sustainability.  And, the success of this project, which has almost already been achieved – finding the hot water is the tough part – most likely signals the coming of additional projects in the country as well as in neighboring countries.  Additional development projects will most likely include not only district heating but the production of geothermal power via binary cycle power plants.

It is also a success story for Mannvit Engineering of Iceland who, applying their many decades of experience in geothermal energy, was responsible for all preparatory, engineering and project management including, desktop studies, field research, geothermal exploration and geothermal drilling

Mannvit is the largest engineering company in Iceland and has been involved in most of the geothermal power plants there.  Over the last few years, they’ve been strategically growing their operations overseas including in Europe and the US.  The success of this project will most likely be an important stepping stone into other geothermal development projects.

A lot was riding on this for PannErgy, which is a Hungarian geothermal development firm.  Investments can be risky and the success of this project will help stabilize their position and launch them towards additional development in Hungary.

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