Showing posts with label energy shortages. Show all posts
Showing posts with label energy shortages. Show all posts

Sunday, December 18, 2022

The Forecaster's Eyeglasses

A major focus of this blog has been to try to guess the outlines of the future, and to outline possible strategies for preparing for that future.  People who try to guess the outlines of the future need a certain mindset if they intend to safely engage in the guessing game without making fools of themselves.  One essential characteristic of the required mindset is humility - the kind of humility which keeps the guessers from taking themselves and their guesses so seriously that they are unwilling to take on emerging information which may contradict the original guesses.  Another essential characteristic is curiosity - the kind of curiosity which dedicates itself to observing and tracking emerging trends.  Lastly, what is needed is precision - a rigorous logical precision in evaluating both one's guesses and one's observations, as well as logical rigor in evaluating whether one's observations confirm one's original guesses.  The scientific method is an example of this kind of rigorous precision.  

A large body of guesses about the future has to do with the effects of resource depletion and environmental degradation on modern industrial society.  As an example we can consider the many books written on the subject during the first decade of the 21st century.  Spokespersons such as Julian Darley, Richard Heinberg, James Howard Kunstler, Dmitry Orlov, Nicole Foss, and Raul Ilargi Meijer promoted the view that the world's supplies of petroleum were on the verge of entering a phase of declining output, and that this irreversible decline in output would trigger catastrophic changes in the world's industrial societies, or to put it more starkly, the sudden catastrophic collapse of industrial society.  Some of the predictions of these people seemed to leave the realm of fact-based analysis entirely and became instead the embodiment of the subconscious night terror of white Anglo-European society over the possible loss of their own dominance and control of the earth.

So how did the predictions of these people fare in the face of events?  The answer is decidedly mixed.  Many of these predictors were able to draw the correct linkage between the impending decline of global petroleum output and U.S. foreign policy under the presidency of George W. Bush.  And according to the analysis of the German Energy Watch Group, the world has indeed long since passed the peak of global conventional oil production.  However, the predictions of the "collapsitarians" failed to account for the technological innovations which allowed the petroleum industry to temporarily boost output of petroleum liquids by means of fracking, ultra-deep drilling, horizontal drilling and other unconventional means.  (Of course, the use of these techniques also led to widespread groundwater contamination as well.)  These predictions also failed to account for the innovations in solar pv cell production, electricity storage technology, and electric vehicle design which have occurred from 2010 onward.  (However, these predictors of collapse did manage to breathe new life into a genre of literature which had gone dormant after the threat of nuclear war seemed to recede from the 1980's onward - namely the genre of post-apocalyptic fiction!  Move over, John Wyndham, Brian Aldiss, Pat Frank, Stephen King, and Walter M. Miller - you've got new neighbors...)

In other words, while resource shortages have begun to appear, they have been partially mitigated by technological advances.  Thus, society in general has most definitely not collapsed.  Yet ordinary people - especially those who are not among the privileged - have found that the number of potential threats in their environment has multiplied.  We who are not among the world's privileged therefore must learn to navigate that threat environment.  This navigation will require us to identify both emergent trends and potential risks.  So I'd like to lay out a few of these trends and risks in the remaining space in this post.  Let's consider the following:
  • Energy.  The global energy situation is a mixed bag at present.  As mentioned above, global oil production is definitely past peak right now, and I'd like to suggest that this includes not only conventional oil, but all petroleum liquids.  This is why oil prices had begun to rise in 2021 even before the Russian invasion of Ukraine.  What is more, global production of coal may already have peaked.  According to the Energy Watch Group, global production of uranium has also already peaked.  Therefore the outlook is not good for those societies and industries which rely primarily on fossil fuel.  However, the outlook for renewables - especially solar photovoltaics - is quite sunny.  (Pardon the pun.)  As mentioned previously on this blog, analyses conducted by the German Energy Watch Group show that the transformation of global industrial societies entirely to renewable energy conveyed by electricity is well within the capabilities of these societies.  That transformation was already in progress before the start of this year, and has only accelerated as nations have come to realize that they cannot allow themselves to become dependent on the resources of thug regimes with imperial ambitions such as Russia.
One wild card in the energy mix is the potential contribution from nuclear fusion energy.  Two weeks ago the United States achieved ignition for the first time in a laser-triggered inertial confinement fusion experiment.  What this means is that by using laser light to implode a fusion target, the experimenters were able to produce more energy than the lasers used to initiate the fusion reaction.  However, this does not mean that a practical commercial fusion reactor is just around the corner.  So far, most fusion experiments have focused on the deuterium-tritium reaction, which produces most of its energy in a form that is very hard to harness for electricity generation.  The reaction also produces a very high neutron flux, which tends to destroy reactor materials over time in addition to producing lots of radioactive waste.  The disadvantages of the deuterium-tritium reaction represent a serious engineering challenge.  It remains to be seen whether that challenge can be overcome.

  • Material Resources. I don't have time today to do an exhaustive analysis of resource bottlenecks, but I can definitely say that shortages of key materials have begun to appear in a number of industries.  Taking the construction industry as an example, from 2020 onward there have been shortages of lumber and steel.  In addition, there have been increasing shortages and delays in obtaining finished construction assemblies such as electrical switchboards, switchgear and transformers.  The appearance of shortages need not be a catastrophic thing, but shortages will force the world's economies to shift to a more circular model.  This will force a shift in the ideologies of many right-leaning people in the United States, for instance.  The good news is that a number of heavy industrial corporations have begun to move toward embracing the circular economy.  However, the existence and increasing severity of material shortages may prove to be more of an economic constraint than the shortage of energy was supposed to be.

  • Climate and Environment.  The events of the past three or four years have provided blatant proof of the accelerating pace of global warming and its resulting environmental degradation.  From the spectacular Russian wildfires (most of which were caused by humans) which took place every year during the last ten years to the massive wildfires and smoke events which occurred in the western United States in 2020 to the horrible extreme temperatures which were seen in the U.S. Pacific Northwest in 2021, we have begun to witness weather events which have not been seen on the earth for millions of years.  Moreover, recent studies show that the melting of the earth's permanent ice is happening as much as 100 times faster than scientific models have predicted.  Many have predicted that increasing alteration of the earth's climate will result in large-scale migration of "climate refugees" from more chaotic or inhospitable regions to more habitable regions of the earth.  The assumption has been that these refugees will be from among the world's poorest people.  But it seems to me - especially given the random distribution of extreme weather events over the last few years - that many of these refugees may come from the world's most affluent populations.  Think of rich retired snowbirds fleeing from Arizona or jet-setters fleeing coastal resort properties in Florida.  Perhaps the best prospects will belong to those people who are wise and savvy enough to make a habitable space wherever they may find themselves - even if it means making one's bed in Sheol.

  • Social Justice and Human Rights.  It is in this area that the greatest threats have arisen over the last decade.  The poor and oppressed populations of the earth won a number of significant victories during the 20th century.  Those victories led to such things as the end of the British Empire, the liberation of formerly colonized nations in the Global South, and the establishment of polities of liberated people who were able to begin to build their own collective power in order to fulfill their own human potential.  A number of observers including both social scientists and science fiction writers predicted that this trend would only continue until the entire earth had become an egalitarian society in which each human being was valued equally and in which each human being could flourish.  However, such idealistic thinking failed to recognize the latent power and personality-disordered nature of the oppressors, nor did it take into account the fact that the oppressors began to organize themselves to take back their lost glory.  Thus many of us failed to notice the efforts - at first subtle, then more blatant - which began from 1980 onward in the United States to attempt to reverse all the civil rights gains achieved by the nonwhite in the United States from 1865 onward.  We failed to recognize the emergence of revanchists both domestically and globally.

Now we stand at a crossroads - especially those of us who are people of color in the United States.  Our strategy to date for dealing with the re-emergent threats we face has been inadequate, to say the least.  That strategy has consisted of joining ourselves to a "progressive" agenda which does not place our unique concerns first and foremost, because it was not set by us.  Those who push this agenda on us have instructed us to engage in a "strategy" which largely consists of begging the oppressor to be nice.  This hasn't worked.  We have allowed our struggle to be hijacked by people whose priorities are not our priorities.  And we who are people of color in the United States have allowed ourselves to be turned into the foot soldiers of someone else's agenda, in the hopes that we might be able to receive some of the crumbs which fall from the table of that someone else when they have accomplished their agenda.

We need to start constructing our own agenda.  That agenda must start with us coming together to create our own structures of self-reliance just as Gandhi did in India at the beginning of his struggle against British imperialism.  This will involve struggle and hard work.  We need to stop being afraid of struggle and hard work.  To quote from a certain book on strategic nonviolent resistance, we need to realize that "the guilt of falling into the predatory hands of [oppressors] lay in the oppressed society and, thus, the solution and liberation need to come from that society transformed through its work, education, and civility."  Or, to put it another way, if I get out of bed and go into the bathroom to brush my teeth and I find a wolf there, it is 100 percent the wolf's fault if I get eaten by the wolf, since most reasonable people would never have any reason to expect a wolf in their houses.  (That nasty wolf must have sneaked in!)  But if I live in a place where wolves are commonplace and are very vicious, and I know this to be true, and yet I take no precautions when I leave my house, it is still 100 percent the wolf's fault if I get eaten, because the wolf is an evil, predatory beast whose evil nature moved him to start chewing on me.  But in this case, it is also 100 percent my fault, because I knew that there were wolves near my house, and I knew what sort of creatures wolves are, and yet I did nothing to protect myself.  Chew on that for a while.

Note that this list is not exhaustive.  In particular, I ran out of time to discuss the emergence of potential pandemic threats and the threats to public health which have resulted from the spread of disinformation and denialism by the Global Far Right.  Nor did I discuss the geopolitical threat posed by national revanchism, although this naturally follows from a consideration of threats to human rights and social justice.  While Russia is a blatant example of a revanchist threat, it is by no means the only example.  And there is the question of how the emergence of artificial machine intelligence will evolve and how much of an impact it will make on our daily lives.   But I must leave these considerations for another day.

Friday, November 4, 2011

Renewables for Rich People - A Geothermal Hole

(This week, I'd like to give a big welcome to LindaM. She writes the blog hello it's me.)

As part of my present job, I am getting to mingle with people who have relatively deep backgrounds in the various facets of what is commonly called “renewable energy” in the United States nowadays. I am always eager to have my horizons expanded and my thinking challenged, so from time to time I talk with some of these people about their work.

A couple of Fridays ago I got to have coffee (for me it was actually herbal tea) with a geothermal engineer who holds advanced degrees. I was curious about geothermal energy, and was wondering as well about whether pursuing a post-baccalaureate education would actually be worth my time and effort. I learned a number of interesting things about geothermal energy.

First, the word “geothermal” has two common uses in the field of energy engineering. The first use, which more accurately reflects the classical definition, has to do with the energy, generated within the earth via radioactive decay, which is accessible via voids and discontinuities in the earth's crust that allow high-temperature matter to reach the earth's surface. Typically the high-temperature matter consists of steam, hot water, and high-temperature rock. The second use of the word has to do with the use of ground-source heat pumps to exchange heat between the earth (at shallow depths, typically less than 100') and a building which has spaces that must be conditioned (heated or cooled). (My geothermal engineer friend considers the reference of the word “geothermal” to ground-source heat exchange to be somewhat inaccurate.)

High-temperature geothermal energy resources are used for electricity generation and to supply heat for direct heating of spaces and for some industrial processes. My friend told me that in the United States, there is a strong bias toward using geothermal energy for electricity generation, and not nearly as much interest in using geothermal energy for direct heating applications, although there is a growing interest here in direct heat applications. I mentioned an article by Kris de Decker that I had recently read in Low Tech Magazine, in which Mr. de Decker stated that “Most of the talk about renewable energy is aimed at electricity production. However, most of the energy we need is heat...”

We discussed the bias toward electricity generation in the renewable industry in the U.S. and concluded that it must be due to the prejudices of the big economic players here who have sunk large amounts of capital in electric power plants and centralized schemes of electricity distribution. These players are only interested in a renewable source of energy to the extent that it can help them maintain and increase their profits via their current infrastructure and business model. Using a renewable resource for primary delivery of energy in a form other than electricity would undercut previous investments in electricity generation and distribution. (As an aside, my friend pointed out to me that non-electric uses of geothermal energy are very popular in Europe and elsewhere. China, for instance, has no geothermal electric plants, but has many applications of direct geothermal heating.)

We moved on to discuss how geothermal “resources” are discovered and exploited. I was interested in knowing whether the same methodology used for identifying potential oil and gas resources is used for identifying geothermal resources. My friend told me that historically geologists have used somewhat different methods for identifying geothermal resources, and that the oil and gas methodology is not altogether a good fit for identifying geothermal resources, due to the dynamic nature of heat flows within the earth's crust. A good (as in ethical, honest, accurate) geothermal geologist is therefore likely to include a much larger margin of error in his or her assessment of a potential geothermal resource than a petroleum geologist is in assessing a potential petroleum resource.

This puts a geothermal engineer in a bit of a bind, because the only true way to assess a potential geothermal resource is to drill a well, and wells require a lot of money up front. Therefore, venture capitalists and other lenders often demand that a geologist provide an unreasonable degree of certainty in identifying a resource prior to drilling. Of course, any geologist who identifies a resource with such certainty prior to drilling makes himself or herself professionally and financially liable if such an identification proves false. Typically, it is a petroleum industry service firm that drills a geothermal well, since such wells must be deep (at least 300 feet, and typically thousands of feet deep), and such firms normally collect hefty profits.

Although readily accessible geothermal resources in the U.S. are limited in availability, there are some good examples here of geothermal energy use. My friend told me of villages and towns in Alaska that are supplied with geothermal district heating. Also, there is the city of Klamath Falls in Oregon, which provides geothermal district heating to its populace, along with a geothermal heat and electricity plant at a state university campus in Klamath Falls.

One “take-away” point from our conversation is that geothermal energy is expensive due to high up-front capital and infrastructure costs. In a shrinking economy, this means a shrinking likelihood of expanding geothermal energy use. The American bias toward viewing renewable resources solely in terms of electricity generation is likely to have unpleasant consequences because of the age and increasing disrepair of our grid, along with the very high costs of an extensive grid overhaul and the rapidly appearing shortages of capital caused by our economic collapse.

What about ground-source heat exchange, then? We both agreed that it is a useful way to save energy. But here again, the up-front capital and infrastructure costs are high. Landlords and owners of large buildings would be far more likely to be able to afford the micro-tunneling needed to install a large heat exchanger in the ground next to a new building whose interior spaces were to be conditioned via ground-source heat pumps. Small landlords and homeowners would find the installation of ground source heat exchange to be quite “spendy,” to use an Oregonian term. Retrofitting an existing home – especially a home with a conventional joist floor – would be really spendy. (Think $30,000 or thereabouts.) This would be due to having to replace the floor with a concrete slab containing embedded heat exchanger pipes.

My conclusion at the end of our conversation was that exploiting geothermal energy or ground-source heat exchange is probably out of the reach of the vast majority of people in this country because of the high cost involved, and geothermal energy will therefore probably not be part of the toolkit of people looking to create resilient neighborhoods in this present time of energy and economic decline. Most of us will have to adopt low-tech strategies for getting our energy needs met. Geothermal energy has its place, but that place is limited.

And as far as me going back to school? I'll tell you all about that some other time...;)

P.S. Although I am an engineer, I am not a geologist. If any geologists read this, feel free to chip in your educated two cents...

Monday, March 15, 2010

A Slightly Late Post, March 2010

To those who are just now joining this blog, I want to say a big “Thank you.” The Well Run Dry is a blog that deals with declines in the energy available to modern industrial society, the environmental destruction caused by this society, and its resulting economic contraction. It is partly a discussion of problems caused by energy decline, environmental degradation and economic collapse. It is also partly a calling-out of some of the rich and powerful people responsible for making our predicament worse than it need be. And it is partly a diary – how one man (me) wakes up to our situation and searches for strategies for coping with all of it. Hopefully in thinking of strategies I can come up with things that help all of you.

Normally, I try to post each weekend (Saturdays preferably, though sometimes I get a post in on a Friday night and sometimes I am delayed until Sunday afternoons). There are also times when I am able to publish two posts per week. This weekend I participated in a tree-planting organized by Friends of Trees, a Portland environmental nonprofit organization. Having recently purchased a very cool “hybrid” camera (one that records both high quality still images and high quality videos), I shot some videos of the tree planting, as well as short interviews with some of the staff. This weekend's post would have featured those videos, as well as a brief explanation of Friends of Trees and the impact of their efforts on building resilient neighborhoods.

Unfortunately, when I tried to upload the videos to Youtube, my computer kept disconnecting from the Web (and the upload process seemed to take forever), so I never completed this weekend's post. I am now looking into other video hosting sites like Vimeo or the Internet Archive. Hopefully, sometime before my next birthday I'll have those videos up on the Web. ;) I've also got to learn how to turn my videos into a more polished production... Meanwhile, if you want to see some other videos I recently shot, look up the “Portland Fix-It Fair” on Youtube. The Fix-It Fair is an annual series of workshops hosted by the City of Portland to promote resilient, sustainable neighborhoods.

I also have more interviews for you all to enjoy. One interview I did last week dealt with urban farming; I'll try to have the transcript up shortly. And I'll be writing a “diary” entry about coping with slow times at my company, and thoughts on appropriate strategies for people dealing with continued underemployment. Stay tuned...

Sunday, November 29, 2009

Small-Scale Manufacturing and Digital Fabbers - The Question of Electronics

One of the consequences of the decline of available fossil-fuel energy is the contraction of our large-scale, global industrial economy. The decline in supplies of fossil fuels will make globalism prohibitively expensive as time goes on, due to the ever-increasing energy cost of shipping bulk-manufactured goods thousands of miles from their point of manufacture to their point of final sale. Many elements of modern society will therefore only survive via the revival of local, small-scale manufacture of goods.

The creation of small-scale, do-it-yourself digital fabricators (referred to from here on as “fabbers”), has been promoted as a key to the revival of modern-day small-scale manufacturing. According to many fabber proponents and enthusiasts, the rise of fabbers promises to do for manufacturing what inexpensive consumer entertainment electronics did for the creation of media. Whereas cheap consumer electronics enabled everyone to be a potential creator of art, education or entertainment, fabbers might enable everyone to be a potential creator of useful manufactured goods.

But for fabbers to serve as a true long-term solution to the breakdown of centralized industrial production, they must be able to create everything needed for sustainable localized economies – including parts to make more fabbers. To the extent that the making of fabbers requires parts or components that can only be made by large-scale plants in today's economy, to that extent fabbers are not really sustainable. One item of concern is thus the microelectronic components used to control fabbers, as these microelectronic controllers are now made in large, energy-intensive semiconductor chip plants. There are many issues of concern for those who want to try making microprocessors on a small scale, such as the very demanding and exacting conditions required for manufacture (vacuum chambers, ultrapure materials and clean rooms), and the energy required to achieve these conditions.

These conditions apply to all semiconductor-based microelectronics, though their impact varies depending on whether we are considering organic or inorganic semiconductor materials. Today's post will consider manufacture of inorganic semiconductor microelectronics. In this post, I do not promise to come to definite conclusions, but rather to raise important questions. It seems to me that these questions are too often not addressed by those who enthusiastically promote a “fabber revolution” as a solution to economic collapse. My posts on this topic are designed to provoke a conversation on this subject. There are four questions which I'd like to see addressed:

The Question of Energy

Almost all semiconductors in use at present are inorganic. (Liquid-crystal displays, some flat-panel screens and some RFID tags are notable exceptions.) Most inorganic semiconductor electronics are silicon-based.

In its natural form, silicon is literally dirt-cheap. However, the silicon found in sand and dirt is not nearly pure enough for use in high-speed electronics. The process of purification is not nearly as cheap. Metallurgical grade silicon (98 percent pure and above) is created by the reaction of high purity silica with other materials in an electric arc furnace heated to over 1900 degrees C. A method also exists for extracting pure silicon (purity greater than 99 percent) from silica by molten salt electrolysis. But this process also requires high temperatures (around 900 degrees C).

Electronic-grade silicon must be millions of times purer than 99 percent pure. The processes of this purification start with the aforementioned metallurgical grade silicon as a feedstock. They are all very energy-intensive, with the Siemens process (Chemical Vapor Deposition) having the highest energy requirement. Getting from beach sand to electronic-grade silicon is not cheap!

Once the silicon is at the right purity, it must be doped with trace elements in order to produce the desired semiconducting properties. This process is also energy and equipment-intensive, and requires a vacuum chamber containing pure silicon rods heated to 1000 degrees C. Many of the dopant chemicals are extremely poisonous, and some are also explosive.

Once the properly doped silicon has been created, it is cut into wafers which are etched and deposited with other dopants and contact metals in vacuum chambers in order to make the final microelectronic chips used in almost all modern digital devices. The processes of this manufacture are all quite expensive, both in labor, capital (machinery required) and energy. Modern digital devices are as cheap as they are simply because not much semiconductor material is needed anymore in order to make chips of great computational power. Yet energy is generally becoming more expensive as time passes, and shortages of dopant materials are also beginning to appear.

The Question of Dopants (And Other Exotic Materials)

The dopants used to alter the conducting properties of silicon and other semiconductors are themselves hard to find, hard to mine and relatively scarce in many cases. Antimony is one such dopant, used for both silicon and germanium semiconductors, and it has found extensive use in newly developed rewritable memory for digital devices. Most of the remaining antimony in the world is produced by China, and there is no U.S. domestic antimony production. Gallium is another material whose manufacturing users experienced a recent shortage, as was the case with indium also. Thallium is yet another metal whose supply has become constrained at nearly the same time that demand for the metal has increased. Many dopants and other industrial metals have witnessed Hubbert production peaks and are now in decline.

It may be that the electronics industry will experience a dead end in the use of certain elements within the next few decades, as the available supplies of these elements run out. This will mean a stop to the making of microelectronics that depend on these elements for doping. If continued advances in electronics are to continue, the industry will have to find alternatives to expensively produced inorganic semiconductors doped with scarce materials.

Hope On The Horizon? (The Promise of Exotic Materials)

Within the last few years, there have been exciting announcements of the discovery of exotic forms of common materials, forms whose properties hold the possibility of creating wonder microelectronics which don't need exotic dopants. One such development is the creation of silicon nanotubes, which have recently been fabricated into dopant-free nanotransistors by crossing the nanowires over each other and adding tiny metal contacts known as “Schottky contacts.”

However, the creation of these exotic nanowires requires a correspondingly exotic process. The first step is the production of silane from metallurgical grade silicon at a temperature exceeding 300 degrees C. The resulting silane is pyrophoric and explosive, and must be carefully handled. Then the silane is passed over a metal catalyst in a special chamber heated to at least 400 degrees C. This step is what produces the silicon nanowires. While the process can yield nano-transistors and other nano-components that do not require dopants, the process itself is still quite energy-intensive. One publication states that the silicon nanowire breakthrough may lead to “printable electronics” that can be produced by an inkjet printer. I myself am a bit skeptical. If someone could kindly explain to me how this would work, I would happily listen.

Concluding Questions:

The promoters of one particular fabber project state that their concept is the key to “wealth without money,” and that a society supplied by fabbers can “create wealth with a minimal need for industrial manufacturing.” They even talk of a society that is able to provide its own stocks of raw materials by turning crops into polymer feedstocks for fabrication by their fabbers, so that a cycle of wealth could be perpetuated (while reducing greenhouse gas emissions at the same time – a neat bargain!).

I remain unconvinced (but not dogmatically so). I think that, at least as far as energy and the resource-intensive microelectronics needed to run these fabbers, their promoters have overlooked the effects of looming scarcity, and the difficulties posed by the breakdown of our present industrial society. Has anyone made a do-it-yourself garage fabber that can make silicon nanowires? How about a DIY garage fabber that can even make metallic silicon? Are there fabbers that can make high-quality vacuum deposition chambers? Are there fabbers that can dope pure silicon without the risk of toxic gases leaking out and poisoning a few households in a neighborhood? Has anyone rigorously addressed the problem of obtaining large supplies of metallic silicon in an energy-constrained future? (This is the BIG question.) Most importantly, how much energy will all of this take? How long will we retain access to that kind of energy? The future I envision for electronics looks rather different from that of the optimists, but I would welcome further discussion and enlightenment on this subject, including some more rigorous numerical analyses.

The next time I address this topic, we will consider organic (polymeric) electronics. Stay tuned...

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