Showing posts with label inventions. Show all posts
Showing posts with label inventions. Show all posts

Friday, August 14, 2015

A Profitable Proto Arcology

Sustainable Photovoltaic Solar Array Operations on Lake Mead


Concept:

Instead of spending billions to get more water, the SNWA should be earning money to get more water. And instead of being the Watergrab super-villain, the SNWA could be the water conservation super-hero.

Here is an opportunity to absorb the energy that would have gone into evaporating water off of Lake Mead – and instead converting it into electricity. Here's an idea that's way better than California's shade balls.

Presently, Southern Nevada gets 300,000 acre feet per year from the Colorado River. And an estimated 900,000 acre feet a year of water evaporate off of Lake Mead! Yes, that's three times what Southern Nevada uses that just drifts away on the winds. If the SNWA could prevent just 1 percent of that evaporation, Southern Nevada could get an extra 9,000 acre feet more per year from the Colorado River – and with return flow credits, that would amount to about 14,000 acre feet per year more. That's about 3 percent more water for Southern Nevada. Not a huge amount of water, but definitely significant.

...What would be huge however; is that the SNWA could do it at no cost (in the long term) to ratepayers. In fact, with solar power arrays, there is money to be earned. Imagine that; more water and lower water bills. Moreover, solar power generation on Lake Mead means that pristine desert valleys don't have to be bulldozed to install solar power. Win – win – win.

Lake Mead covers an area of about 250 square miles. A solar array big enough to cover 1 percent of Lake Mead would be about 2.5 square miles. That's big enough to generate up to 700 MW.

2.5 square miles X 2.788 x 107 square feet/square mile X 10 watts/square foot = 697 MW

And it wouldn't be much more expensive to do. The floating platforms to mount the solar arrays to can be cheaply and sustainably made, with a foam bottom and a solid top for the floor of the platform. Each modular platform array can be tied to its neighbor platform to form a scalable reconfigurable platform network. 

 
And since Lake water will be directly in contact with the platform bottom surfaces, there will be no water/air interface, which means essentially no evaporation under the platforms.

For protection from storms, it would be wise to build wave break platforms surrounding the solar power network. These wave breaks should be capable of eventually generating wave power to help pay for themselves. Moreover, the wave break facilities would shade some more of Lake Mead, thus further reducing evaporative losses.

The wave break platforms could also be made inexpensive, portable, and modular – about the size of a semi trailer. Which means the overall shape and size of the wave brake facility would be determined by spacers between the wave break platforms. Again, scalable and reconfigurable.


Of course; Lake Mead is a National Recreation Area, and the Federal Government might initially be hesitant to build solar facilities on the water. But since every acre of water with solar arrays on it would mean an acre of (usually) Federal land that won't have to be bulldozed for solar arrays, it seems very likely they will come around. Lake Mead is a man-made reservoir. So, floating platforms do not have the environmental impact of land-based solar arrays on natural desert ecosystems. And since this facility's water conservation could result in reduced water transfers from Federal lands (such as the SNWA Watergrab of Central Nevada), solar arrays on lakes could lead to much better environmental results overall.

Phase 1: Photovoltaic Solar Arrays on Lake Mead – Technical Information

The facility would consist of modular platform units that could form a scalable and configurable network of Photovoltaic (PV) solar array platforms, surrounded by modular units of a scalable wave break / wave power generation network. From the air it would look like a distorted checkerboard of platforms and water, inside a circular wall (with an entrance that consists of an opening with an offset wall).



The bottoms of the platforms should be just slightly convex to completely sink into the water at the interface. Since the water will be directly in contact with the platform bottom surface, there will be no water/air interface, and therefore essentially no evaporation under the platform. Consequently, there is a multi-use incentive to make the bottom of the platforms wider than the area where the solar panels are mounted; to reduce evaporation and make the platform more stable. Moreover, since the solar arrays would be installed at an angle near 36 degrees (latitude), some shade from the panels will shade an area larger than the solar array footprint – further reducing evaporative losses.

The platforms would be tied both to the floor of the lake bed and to each other. And because of the encircling wave break, the solar platform network won't have to be as robust.

The wave break barrier could be made modular also. From the top, the wave break modules would appear rectangular. The overall shape of the wave brake facility would be determined by spacers between the wave break platforms. The wave break facility could be perfectly circular, or meander about – like a coastline.

Of course, the wave break barriers would have to be strong enough to absorb the energy of the waves hitting it. Which means the wave break platforms would be more massive than the solar platforms. At water level from the outside, this wave break barrier wall might look imposing (at about 10 feet high) – but it could also serve as a barrier to vandals (and zombie terrorists). To reduce the imposing feel, the wave break facility could be painted white to look more like Lake Mead shoreline from a distance. To give the wave break a recreational function; it could also function as a bicycle, foot, and skate path around the solar facility. At the facility entry, the path could lead radially inward around the opening in the wave break. Inside the wave break, the path could be used as a marina walkway – with slips for boats along the water inside of the path. The path wouldn't drop that 10 feet however. Which means the path would double as a shade for pedestrians on the walkway beneath.

To further the wave break's friendly impression, water slides and dive boards could be installed around the outside edge. Also, charging stations could be located around the perimeter of the wave break facility – available to charge all electric boats with power generated at the facility for free.

Wave power generation could be achieved at the wave breaks either by having floats that move up and down on guide rods like a bead on a string (or floats on arms) right at the break. When the water hits the break, it would slam the floats much farther up the wall of the break than the height of the wave. And the trough of the wave would drop the float even lower too.

The wave power generation equipment doesn't necessarily have to be installed immediately. But the wave break barriers should be designed so that they can be easily installed later.

And as far as the solar power is concerned; Micro Inverters that function independently for each solar panel would be ideal for the PV solar network. Modularity within modularity means everything is scalable. And bonus; most of this should be off the shelf hardware.


Phase 2: The Next Step - an Island

Once the platform network reaches a certain size, a small crew of people would be needed to stay at the facility to construct, monitor, and maintain things. The crew will need water treatment for both their drinking water and sewage. Drinking water shouldn't be too much of an issue. But sewage treatment on the lake might be. Especially if the goal is to get the sewage to the point that it could be used as fish food. Multiple steps would be necessary. But it shouldn't be impossible, because all we're really trying to do is speed up nature's recycling process. (By the way; it's my opinion that speeding up nature's recycling process is the key to feeding our growing population.)

A conventional sewage treatment facility surrounded by concentric rings of man-made wetlands ought to do most of the work.

A company called Floating Island International has developed what they call BioHaven Floating Islands – which “biomimic natural floating islands to create a “concentrated” wetlands effect.” In other words, they've figured out how to further clean sewage treatment effluent to the point it might end up cleaner than the water in Lake Mead. Think about that; in lined ponds, treated sewage could be turned into microscopic life that could be eaten by larger forms of life, that could eventually feed bait fish, that could be set free near the Island to feed game fish. And the byproduct is Lake Mead water gets cleaned. 


The Island's sewage treatment plant could be located towards the center of the solar platform network – away from sensitive noses. Of course, it would be enclosed. But out there, people wouldn't even see it. They would just appreciate it – in their clean water, productive soil, and fish food.

That “fish food” could be used to entice game fish to hang around the platform network. The edges of the platforms could even be designed to provide fish habitat. Which means the crew could supplement their diets with protein from their own poo-fed fish. This may sound disgusting. But done right; it would be superbly efficient. Eventually, the inhabitants might even want to install a net below the wave break facility with a weave large enough to let small fish in but small enough to hold in fish large enough to catch.

...And that productive soil would be great for greenhouse garden platforms (which would also be useful for shading the Lake). Yes, some of that recycled poo could be used as fertilizer for a garden. Again, this may sound filthy, but it is pretty much identical to what happens in the Environment now – only with a minimized number of steps.

On Lake Mead; one could grow food all year in a greenhouse. It doesn't get that cold in the Winter. Greenhouses could radically limit evaporative losses. And high temperatures in the Summer could be dealt with by pumping cool water from the deep into heat exchangers below the greenhouses.

Water could be pumped up from the deep to cool the floors and air of the floating platforms. This water would pass though heat exchangers – and never come in contact with air, so there would be no evaporation losses. Unless of course, the Islanders choose to release that deep water near the surface to cool the surface water near the Island – thus further reducing evaporation losses on the surface of the lake. (Plus, by being able to regulate the water surface temperatures near the Island, there are more options for controlling algae blooms.)

With a little intelligent valving control, water could be used to both heat and cool living areas. Water could be pumped into the floors, roofs, and walls of the buildings. In the Winter, the water in the roof would be heated by the day sun, and circulated to water storage areas in the walls and floors. And in the Summer, cool water from the deep can be circulated in the floors, walls, and the roofs. This, combined with passive solar heating, would leave little need for heaters or air conditioners – with no evaporation.

In addition, thermal mass aquariums could provide multiple assets. Water could be pumped into aquariums to provide fresh water for bait fish hatcheries. The aquariums could be placed near the passive solar windows to provide thermal mass for living spaces. In the Summer, the aquariums would be in the shade. But as temperatures drop, so does the angle of the sun. In the Winter, the low angle sun would shine directly on the aquariums. Since water has the highest heat capacity of all common solids and liquids, it can take the place of thick earthen walls seen in sustainable earthbound buildings (such as Earthships). And if the water gets too hot for the bait fish, their water can be pumped away to heat the rest of the building – and cool lake water pumped in.


Phase 3: Transformation to a Resort

Once the infrastructure of power, water, sewage, and food production is in place; the Island can be made to feel like an Island Resort.

It is important to consider aesthetics. Many people might see the Solar Island as an eyesore on a National Recreation Area. These people have to be convinced that there is something in it for them. How about an on-water emergency response post? How about a Solar Powered Island Marina? How about techno-fantasy island resort?

People tend to favor places they can go. And with the right image, this Island could become a tourist attraction – kind of like the SNWA's Springs Preserve – only cool.

While it is true that most people would be willing to put up with a huge solar array on Lake Mead – if it meant more water. Why just put up with it? Why not make the place desirable? Why not make it look at little like an actual island? In fact, why not make it a destination – a resort even? But not just any resort. This resort would be for people willing to enjoy what low-impact, sustainable, post-modern livability looks like. Or then again, maybe they'll just want to play volley ball on the beach at the Water Park.

I envision a hidden resort, like some secret island in a James Bond movie. Once you enter through the passage, there is a marina with a boardwalk that leads to a row of buildings that appear to be a combination of Santorini Greece and a fish tank. White! But with lots of passive solar windows – facing South, towards the Marina – which would be on the South side of the Island for that very reason. Businesses located here would be plainly visible to people just coming “ashore.” Through the windows; one could see a restaurant though one window, a convenience store in another, an on-water Ranger Station in another, and a seminar being held in yet another. There may be two or three floors, but each floor is set back, so that every floor can have a patio. And the top roofs are all patios with shades above them (that roll up in the Winter).

A company called Dutch Docklands has already been working on this. They already build homes on the water, and are poised to build islands – complete with sandy beaches and golf courses. Obviously, the golf course in this project would be using artificial turf, but the course would also be covering a section of the Lake to minimize evaporation. So imagine that; a golf course that not only doesn't use water, but actually saves water. 


Fishing could be promoted. And, of course, visitors sewage could be collected for recycling into fish food. But rather than hiding this information, it could be promoted as something to be experienced to inspire hope for the future.

Moreover, the charging stations placed around the perimeter of the Island would remove some of the perceived impediments to electric boats on Lake Mead – thus further cleaning up Lake Mead water.

If the Island population grows, staff facilities (homes) and guest facilities (rooms) could also be installed on the North end of the Island. Another opening in the wave break could be added to accommodate another Marina on the Northwest end of the Island. The passive solar windows facing South on this side of the Island would face a golf course, tennis courts, or other forms of recreational mini-islands – such as a skate park, soccer field, basketball courts, or even another beach. And to the North side of the homes could be another set of greenhouses.

I don't envision this Island to house more than a few dozen residents and guests. Too many people and the sewage treatment facilities would be overwhelmed. But a community the size of small village ought to be able to live somewhat self-sufficiently here – and provide power even if Lake Mead goes dead pool.


From Power Plant to Proto-Arcology

An arcology is Paolo Soleri's concept of cities which embody the fusion of architecture with ecology. As previously mentioned, this Island would not be a city. And this “arcology” concept is not like the closed arcologies mentioned in Paolo Bacigalupi's novel “The Water Knife.” This system is not designed so that its inhabitants can hide away from the rest of the world – like some kind of Elysium. This arcology concept exists help all people, to not harm the environment, to help the local ecosystem, and to sustainably support its inhabitants. Ideally, this could become a good neighbor arcology.

But why?

We've only got one planet, and it's in serious trouble. We are beginning to face the shock and awe of the overwhelming consequences to our Environment from humanity's collective careless actions. We are beginning to realize that we are overdue for the biggest attitude adjustment in human history. We have to learn how to live differently. Many of us have foreseen it. We all need to prepare.

It's time to stop ignoring the externalities. Everything we do needs to be considerate of the fact that we need to be better prepared at being sustainable – so that we can be more sustainable planet-wide – and keep life on Earth healthy. Everything we design needs to be more thoroughly thought out. Every building needs to be a kind of Earthship. Every structure needs to contribute to Life on Earth in as many ways as possible. That means power plants too.

Of course, only one Solar Island means only 9,000 acre feet of water per year gets conserved. It would take as many as 15 Solar Islands to conserve as much water as SNWA pipe dreams of getting from Central Nevada's deserts (during a drought). This Solar Island concept could end up becoming many big projects. But so what! If these Islands are earning money and are a decent place to visit, somebody will want to build more.

I would think that Pahrump (or even Phoenix) would be very interested in a project like this. And if not, there are likely other States – or even private companies who would willingly invest in water and solar power.

And the reason I don't see much resistance is because everyone can benefit. Done right, this could be a way to keep lake elevations up. If participants banked some of the conserved water in the Lake to prepare for droughts, that would mean more water for the Lake. And if there's more water in the lake, there's more shoreline. Everyone wants that. Solar Islands could even be installed to keep Lake Mead levels up high enough for water to run the electric turbines in Hoover Dam.

This development could all happen very fast – much sooner than the expected growth of solar power generation – because the value of the water conserved can be factored into the cost/benefit equation.

I predict a solar-powered arcology rush on lakes on the Colorado River.


The ideas I have published here are all open source. But they're not all my ideas. Check out Seasteading.

Thursday, March 21, 2013

My Presentation to Utah's Gov. Herbert


Utah's Governor Herbert came to the West Desert to hear public input about the two state agreement between Utah and Nevada (or actually Utah and SNWA). The agreement essentially divides remaining water in Snake Valley between Utah and Southern Nevada. Apparently Governor Herbert has been pressured to sign the agreement within the next few weeks (by whom, he never told us, but most likely SNWA). In addition to information I will be publishing on this blog soon, this was my presentation: 

I would like to state that I am against signing this Interstate Agreement now. But not for the usual reasons.

I am convinced that Utah would be forfeiting an opportunity to get more water. And I'm not talking about drilling or piping more water you already have. I'm talking about Utah literally getting more water!

New technology sometimes has a way of opening up new opportunities. And new desalination technology is a game changer. As recently as five years ago, desalination looked prohibitively expensive. But more recently, a number of far less expensive new desalination processes have been invented, and one is already on the market. Moreover; offshore desalination promises to bypass almost all of the environmental concerns – and make desalination much more reliable.

A new company called Oasys is already desalinating water far cheaper than traditional reverse osmosis in Gibraltar and Oman. Their process is called forward osmosis – and they are reporting 90% savings in energy costs. There are also a number of other good designs coming out of labs – including a reverse osmosis membrane that is 100 times more permeable than present designs and a nano-material that could be used to desalinate water with sunlight (not concentrated sunlight – just sunlight).

Presently, reverse osmosis desalination costs about $2,000 an acre/foot. I've heard an estimate that this watergrab water will cost about $4,000 an acre/foot. Desalination is already cheaper. And with new less expensive desalination processes, desalination should be even cheaper – even if it is done offshore with solar, wind or wave energy.

So, why hasn't SNWA jumped on the idea? Because politically it would be very embarrassing. They have already spent hundreds of millions of dollars on this watergrab. And even though nobody knew the price of desalination would drop this precipitously, SNWA management would look like idiots if they admitted they made such an expensive mistake. Apparently, they would rather waste billions of dollars on a bad idea than face the consequences of admitting they wasted hundreds of millions.

I have an idea instead.

Las Vegas could build offshore desalination plants on barges 15 to 20 miles off the coast of California. And they could provide this desalinated water to communities on the coast – in exchange for more water from the Colorado River... and so can Utah.

Hopefully, somewhere in the near future, water agreements (on every American river that runs to the ocean) could be renegotiated.

Presently, due to lack of organization; the only desalination option realistically considered in America is for communities on the coast to build desalination plants that only benefit themselves. However, Dana Point, a community on the California coast, has already approached Nevada with the desire to arrange a trade. The incentive is obvious; more water. If California communities can get more water, of course they'd be willing to give up some of the allocation to the Colorado River.

Desalination provides abundance. Done right, it means more water for everyone. SNWA needs to realize the obvious; this watergrab is in no way creating long-term abundance for Nevada or Utah. Trying to take water from the desert is just fighting over the scraps.

There now is an opportunity for Utah that would be lost by signing this agreement. If SNWA commits 15 to 20 billion dollars to this watergrab pipeline, it may be decades before they can afford to commit to desalination. Whatever influence Utah has on Nevada to change their mind and make the right decision would be lost on signing this agreement.

Southern Nevada has the opportunity to pioneer a new way of thinking about water that could change the whole outlook for the West. Utah still has the opportunity to influence Nevada's decision. Signing this agreement now reduces Utah's influence on Nevada to pursue a process that would ultimately lead to more water for Utah.

Wednesday, December 26, 2012

What The Oligarchy Fears Most


What is it that the rich and powerful fear the most?
They fear the loss of the tenuous hold they have on their wealth and power. 
...They fear the loss of thier income stream.  

Many among the super-rich think they're better than us. But the flip side of all that perceived intellectual superiority is the realization that there are people out there with better ideas. They know it. And it keeps them awake at night. 
 


Meet Nick Woodman, CEO and founder of GoPro – a company that sells a camera. Of course, not just any camera. This is a tiny digital video camera that has been ruggedized and designed to mount just about anywhere. Nick Woodman started his company from scratch in 2002 with a few thousand dollars. Nick Woodman is now a billionaire. He's sold that many cameras. 

Now consider Kodak – the most successful film company for decades. Now bankrupt – no longer in the photo business at all... Kodak had to see the digital camera age coming. They did. They sold digital cameras. But these were digital cameras just like everybody else's. With all of Kodak's money, people, and business degrees; they couldn't develop the next best thing. This is common. In fact, there are reasons for it.

With all the money Kodak was raking in selling film, nothing else looked profitable.
With all the employees Kodak had, no one thought of it, because they were all busy doing their assigned jobs.
With all the success Kodak had over the years, their management lost the will to take risks (even though, with all their education, they might have known better).
In other words; Kodak got fat and out of touch – and lost their edge.

Either way, Nick Woodman is a billionaire and Kodak is out of the photography business. And every big company knows they could be next. The truth is; many of them should be.

When any company ceases to provide it's customers with the most desirable goods or services, the market is justified in seeking another provider.

But that's not the capitalism we have.
We don't have a free market economy.
We don't have well regulated open markets.
That means we have the freedom to choose from what the monopolies have to offer – and it usually is just barely good enough – but that's OK, because it's expensive.

We have allowed the oligarchs to play whack-a-mole with better ideas.
They do this:

Competition is fundamentally necessary in capitalism. Without it, the market cannot adapt. Of course, that's exactly what oligarchs want. American capitalism rewards monopoly control. Monopolies maximize their profits by selling us federally subsidized - overpriced (and often dangerous) junk. And when our tools from them don't work, everything goes to pieces. But for a while, the oligarchs keep their income stream.

If nothing else, this is what we have to stop. The fate of all life on the planet is at stake.

I'm not exaggerating.

Think about it. Humanity's genetic advantage is that we are capable of instant change. We can adapt by changing our minds. We can learn. This is extraordinarily important. Humans can adapt without having to change our genetics.

Being human means being able to determine, and change, our own destiny.

But if we can't, for numerous underhanded reasons, change our minds; we can't utilize our genetic advantage. If we can't utilize our genetic advantages, we move to the front of the line for extinction. And it's likely we'll take a lot of other life forms with us. 


Oh... by the way, the Arctic Ice Cap just melted to its smallest size in recorded history this year. Nobody seems to be really shocked any more. We know what needs to be done. We know it can be done. We just haven't been able to get around to it yet.

Some people have. The Occupy Movement has peacefully tried to make a difference. And they got the expected mistreatmenttimes ten. This is a sign. This is a sign that the oligarchy is much more powerful than most of us ever imagined. And this is also a sign that they are very afraid...

Hey, it's our money they're taking. And if we ever found out... well, we might buy our stuff from some other monopolistic supplier

The oligarchy has used every trick in the book to keep us under their control. They have realized that all they have to do is control some of us – cast doubt in the minds of most of us – and ostracize the rest of us.

The oligarchy has realized that the more they squeeze the populous with absurd laws, the more the populous will call for smaller government. And the more pressure there is for freedom from restrictions, the more restrictions the oligarchy can avoid

Remember, when it comes right down to it; most of the time, those in power write the laws – for their own selfish benefit.

...But not always.

Their goal is to keep us making payments.
Our goal is to live a happy life.
There is bound to be conflict.
But ultimately, they can only dominate us if we let them.


Wednesday, December 19, 2012

"Barefoot" Running In The Snow!!!

My latest creation: A cleated minimalist sandal with waterproof sock – combination that can run on packed or shallow snow.



I just got back from the initial test run of my Winter Barefoot Running System. Yeah... I call it a system :) The acronym? WBRS – pronounced “wubbers.”

...I think I just realized I now like running better in the Winter than in the Summer. There aren't as many sharp rocks! In fact, running on packed snow on WBRS feels like running on the beach – barefoot!

So, how do my WBRS work, you ask. Quite well... I wore three layers of socks. My first layer was a pair of Injinji toe socks. I just like the way they feel. With them on, I'll never get a blister between my toes, and most important; they counter the pressure from the socks that go on over my toe socks. Admittedly, this isn't much pressure. They're only socks. But the outward pressure of the socks between my toes counters the inward pressure of the outer socks. This provides me with a neutral, barefoot, feeling. The second sock layer was a mid-hi REI wool hiking sock, kind of thick. And the outer sock was a calve-height SealSkinz waterproof sock.

My sandal design is similar to the distance running Tarahumara Indian huarache sandals, but these strap over the top of the foot. Since no company makes a waterproof sock with a slot for the tie to go next to the big toe, I had to make a sandal similar to the Unshoe Pah Tempe.



What I did different was to cut the sole slightly wider in places to accommodate screws that could function as cleats. I used 5/8” countersunk screws on a 10mm sole... They worked! I didn't slip much on packed snow (a freshly plowed dirt road).

Admittedly, I haven't tried them on ice yet. But if there are issues I can always use different length screws – or install more screws. Presently, I only feel the screws when I stand on something firm, like concrete. The screws must bend the sole a little. If this becomes a problem, I can always take the screws out. (The screws haven't come undone, so I haven't glued them in.)

I did one more thing different from the Unshoe design. I added protection for the 3/4” nylon straps on the sides and the bottom of the sandal. I used strips of bicycle inner tube, taped on, so that they can be easily replaced. Electrical tape works just fine – so far.

Overall, I'm very happy. Some snow does accumulate between the sandal and my foot, but I can always clear that with a brush of a finger. However, if I do leave the snow there, it doesn't seem to bother me any more than running over rocks in the Summer – and eventually it clears itself out.

So, not only can I now “barefoot” run in the Winter – I can use this system as an approach shoe when I go backcountry skiing. At lower elevations, where there isn't much snow, I can wear my sandals and socks and carry my telemark boots in my pack. Which means that with this “barefoot” system, I only have to carry one pair of heavy boots.

I already love my WBRS. I just have to remember to carry spare socks – especially waterproof socks – just in case the ones I'm wearing leak. This is only a minor inconvenience, especially when you consider two pairs of WBRS are still much lighter than one pair of snow boots.

There is some (sort of) bad news, however. I only intend to make these shoes for myself. So, you're on your own. But that's a good thing. If you make these shoes yourself, you can make them to fit your feet exactly.

You can get the sole at Luna Sandals. And you can get the strapping and the rest of the materials at most hardware stores. I used carpet thread.

...OK, OK; if you just don't have the time, I wouldn't be surprised if the people at Unshoe would custom make them for you. 

And one more thing; the cleats are an open source design.  

Update: 
Apparently there are a few people who run literally barefoot in the snow. I'm impressed. But I'm also a little concerned. Our ancestors evolved to run barefoot out on the savanas, not in the snow. There may be a serious risk of frostbite. Not necessarily while running. But if you have to stop... especially out in the backcountry (where there isn't anyone around to rescue your barefoot carcass), you could be in a world of hurt.

I wouldn't want to be in a predicament where I have to run, barefoot in the snow, no matter how badly I'm injured. If you just have to try literal (bare) barefoot running in the snow, start out with short runs and stay near places where you can flag down help or call for quick help. Or... you can carry a spare pair of insulated boots - but then you might as well wear them and take them off when you feet get sore - which is what most everyone does anyway