Robert Buxbaum is a life-long engineer, a product of New York's Brooklyn Technical High School, New York's Cooper Union to Science and Art, and Princeton University where he got a PhD in Chemical Engineering. From 1981 to 1991 he was a professor of Chemical Engineering at Michigan State, and now runs an engineering shop in Oak Park, outside of Detroit, Michigan. REB Research manufactures and sells hydrogen generation and purification equipment. He's married with 3 wonderful children who, he's told, would prefer to not be mentioned except by way of complete, unadulterated compliments. As of 2016, he's running to be the drain commissioner/ water resources commissioner of Oakland county.
A review of some studies on the difficulty of sitting in one’s own thoughts.
There is a joke: what is the opposite of speaking?
It’s waiting to speak.
Most people find it uncomfortable to sit still and be quiet. Even listening is a pain. People sit brewing in their thoughts of what they are going to say. Silence is uncomfortable enough that solitary confinement for a few days is torture.
But what about a few minutes. Almost everyone can sit still and listen for 15 minutes as their friend drones on, especially if they are paid for it. Still, it’s uncomfortable, and a study set out to understand how uncomfortable. It turns out that a majority of men, 67% would rather give themselves electric shocks than sit and think or listen. Women, too find it unpleasant; some 25% of women preferred to give themselves electric shocks rather than sit and think. You’ll find a brief review of this and similar work copied above, or you can read the full study: Wilson et al 2014, “The challenge of the disengaged mind“.
The effect of the COVID-19 lockdowns was to remove virtually every bit of agreeableness, extroversion, conscientiousness, and openness, while fueling neuroticism. Data for 2020.
The effect of the COVID-19 lockdowns has been massive. Those involved in government discussions don’t seem to realize how massive, perhaps because they’re in constant contact with people, speaking and being spoken too. Most of us were not so lucky. We experienced partial isolation. A recent study suggests that almost every measure of happiness disappeared during the summer months of 2020: US agreeableness, extroversion, conscientiousness, and openness all declined dramatically, see data above. Decisiveness too; a lingering effect is an inability to make decisions. My hope is that government officials can resist the temptation for more lockdowns and mandates; mental health is health too.
If lockdowns do come, or if you are depressed for any other reason, you might consider exercise, or lithium, or counseling. At least decide to wake up at a fixed time every morning. Under COVID watch conditions, depression is the new normal. Here’s a joke on marriage counseling.
Platinum catalysts can be very effective at removing hydrogen from air. Platinum promotes the irreversible reaction of hydrogen with oxygen to make water: H2 + 1/2 O2 –> H2O, a reaction that can take off, at great rates, even at temperatures well below freezing. In the 1800s, when platinum was cheap, platinum powder was used to light town-gas, gas street lamps. In those days, street lamps were not fueled by methane, ‘natural gas’, but by ‘town gas’, a mix of hydrogen and carbon monoxide and many impurities like H2S. It was made by reacting coal and steam in a gas plant, and it is a testament to the catalytic power of Pt that it could light this town gas. These impurities are catalytic poisons. When exposed to any catalyst, including platinum, the catalyst looses it’s power to. This is especially true at low temperatures where product water condenses, and this too poisons the catalytic surface.
Nowadays, platinum is expensive and platinum catalysts are no longer made of Pt powder, but rather by coating a thin layer of Pt metal on a high surface area substrate like alumina, ceria, or activated carbon. At higher temperatures, this distribution of Pt improves the reaction rate per gram Pt. Unfortunately, at low temperatures, the substrate seems to be part of the poisoning problem. I think I’ve found a partial way around it though.
My company, REB Research, sells Pt catalysts for hydrogen removal use down to about 0°C, 32°F. For those needing lower temperature hydrogen removal, we offer a palladium-hydrocarbon getter that continues to work down to -30°C and works both in air and in the absence of air. It’s pretty good, but poisons more readily than Pt does when exposed to H2S. For years, I had wanted to develop a version of the platinum catalyst that works well down to -30°C or so, and ideally that worked both in air and without air. I got to do some of this development work during the COVID downtime year.
My current approach is to add a small amount of teflon and other hydrophobic materials. My theory is that normal Pt catalysts form water so readily that the water coats the catalytic surface and substrate pores, choking the catalyst from contact with oxygen or hydrogen. My thought of why our Pd-organic works better than Pt is that it’s part because Pd is a slower water former, and in part because the organic compounds prevent water condensation. If so, teflon + Pt should be more active than uncoated Pt catalyst. And it is so.
where is molar volume. The substance-specific constants and can be understood as an attraction force between molecules and a molecular volume respectively. Alternately, they can be calculated from the critical temperature and pressure as
Now, I’m going to assume that the effect of a hydrophobic surface near the Pt is to reduce the effective value of a. This is to say that water molecules still attract as before, but there are fewer water molecules around. I’ll assume that b remains the same. Thus the ratio of Tc and Pc remains the same but the values drop by a factor of related to the decrease in water density. If we imagine the use of enough teflon to decrease he number of water molecules by 60%, that would be enough to reduce the critical temperature by 60%. That is, from 647 K (374 °C) to 359 K, or -14°C. This might be enough to allow Pt catalysts to be used for H2 removal from the gas within a nuclear wast casket. I’m into nuclear, both because of its clean power density and its space density. As for nuclear waste, you need these caskets.
I’ve begun to test of my theory by making hydrogen removal catalyst that use both platinum and palladium along with unsaturated hydrocarbons. I find it works far better than the palladium-hydrocarbon getter, at least at room temperature. I find it works well even when the catalyst is completely soaked in water, but the real experiments are yet to come — how does this work in the cold. Originally I planned to use a freezer for these tests, but I now have a better method: wait for winter and use God’s giant freezer.
I may be paranoid, but that doesn’t mean I’m crazy. COVID-19 shows a remarkably low death rate in Asia, particularly Eastern Asia, compared to the US or Europe or South America. As of this month, there have been 734,600 US deaths from COVID-19, representing 0.22% of all Americans. Another way of stating this is 2.2 deaths per thousand population. In one year, COVID has lowered the life expectancy of US men by 2.1 years; with the decline worst among hispanic men. The COVID death rate is very similar in Europe, and higher in South America (in Peru 0.62%), but hardly any deaths in East Asia. In China only 4,636 people, 0.003% of the population. That’s 1/700th the rate in the US, and almost all of these deaths are in western China. They no longer bother with social distancing.
The low death rate in East Asia. was noted by the BBC over a year ago. Based on today’s data from Worldometer, here, the low death rates continue throughout East Asia, as graphed at right. In Hong-Kong the death rate is 0.03 per thousand, or 1/70th the US rate. In Taiwan, 0.04 per thousand; in Singapore, 0.01 per thousand; in S. Korea 0.04 per thousand; Cambodia and Japan, 0.1 per thousand. The highest of these countries shows 1/20 the death rate of the US. This disease kills far fewer East Asians than Westerners. This difference shows up, for example in a drop in the lifespan of male Americans by 2.16 years. The lifespan of male Hispanics dropped more, by 4.58 years. In China, Japan, and Korea the lifespans have continued to increase.
Life expectancy for US males has dropped by 2.16 years. It’s dropped more for Hispanic and Black Americans. Data for women is similar but not as dramatic.
My suspicion is that this was a racially targeted bio-weapon. But perhaps the targeting of westerners reflects a cultural lifestyle difference. Mask use has been suggested, but I don’t think so. In many high mask countries the death rate is high, while in low mask Taiwan and Korea it’s low, only 0.04 COVID deaths per thousand. Even Sweden, with no masks reports only 1.4 per thousand deaths; that’s 2/3 the death rate of the US. Masks do not seem to explain the difference.
Another lifestyle difference is obesity; Americans are fat. Then again, Peru was hit far worse than we were, and Peruvians are thin. Meanwhile, in Hong Kong, folks are fat, but the death rate is small. Another cultural difference is medicine, but I don’t believe Sweden, Germany, and France have worse healthcare than Taiwan or Cambodia. Cambodia saw 1/20 the US COVID death rate.
My suspicion is that this disease targets by race because it was designed that way. If it isn’t a bio weapon, it certainly behaves like one. I may be paranoid here, but that’s the way it seems.
As a side issue, perhaps related, I note that China keeps pushing for the to close its manufacturing in the interest of CO2 abatement, while they keep building coal burning power plants to fill the manufacturing need that we abandon. I also notice that they hit us with tariffs while protesting our tariffs, that they steal our intellectual property, and that they are building islands in the sea between China and Japan. There is war-tension between our countries, and Western-targetting virus appears right outside of China’s top-security virus lab — their only level 4 lab — I’m guessing it’s not a total coincidence.
With the sun setting earlier, and the threat of new COVID lockdowns, there is a real threat of a depression, seasonal and isolation. A partial remedy is exercise; it helps fight depression whether you take other measures not. An article published last month in the Journal of Affective Disorders reviewed 22 studies of the efficacy of exercise, particularly as an add-on to drugs and therapy. Almost every study showed that exercise helped, and in some studies it helped a lot. See table below. All of the authors are from the University of British Columbia. You can read the article here.
From “Efficacy of exercise combined with standard treatment for depression compared to standard treatment alone: A systematic review and meta-analysis of randomized controlled trials.” by JacquelineLee1 et al.In virtually every study, exercise helps fight depression.
For those who are willing to exercise, there are benefits aside from mental health. Even a daily walk around the block helps with bone strength, weight control, heart disease, plus the above mentioned improvement in mood. More exercise does more. If you bicycle without a helmet, you’re likely to live longer than if you drive.
For those who can’t stand exercise, or if exercise isn’t quite enough to send away the blues, you can try therapy, medication, and/or diet. There is some evidence that food that are high in lithium help fight depression. These food include nuts, beans, tomatoes, some mineral waters, e.g. from Lithia springs, GA. The does is about 1/100 the dose given as a bipolar treatment, but there is evidence that even such small doses help. Lithium was one of the seven ingredients in seven up — it was the one that was supposed to cheer you up. See some research here.
Most people have heard of Moor’s law, the law that computing power keeps doubling every two years, with the price remaining the same, but the same law is observed with other tech products, notably lithium ion batteries and solar cells.
By my calculation the price of lithium ion batteries has fallen 98% so far, at a rate of 12.5% per year. That’s a remarkable drop given that the chemistry has hardly changed. The size has dropped too; it’s nowhere near as much as the price but enough to make batteries a reasonable choice for powering automobiles, scooters, and power tools. Batteries still lack the range and fast charging for some applications, but even there the low cost means that hybrids become attractive, combining for cars and truck, the long range of gas with a reduced cost per mile. The rate of decrease suggests that prices will be below $100 per kWh by 2025. That’s an $8000 cost for a battery powered car with 300 miles of range.
As for where the electricity comes from, the price of electricity is going up and becoming less reliable. In part that’s because of regulations on coal and nuclear power and the inherent problems with large-scale wind and solar. But decentralized solar may turn out to be a winner. Solar prices have fallen 99.6% since 1976. Even though the rate of decrease is slower, about an 8% drop in price per year, there is a sense that solar power has entered the mainstream. Combined with cheap, home batteries, it may soon make sense to power your home and car by solar cells on the house; there isn’t enough area on a car to quite power it.
My last post included a rather gruesome bit of poetry by Rudyard Kipling where he describes the Afghani women coming to kill the wounded British soldiers in the first Afghan war. It’s sexist, or anti-sexist, if you like. Since it reverses a stereotype of the non-violent, female home-body. Then again the Afghanis had wiped out an entire British army, killing virtually everyone including civilians.
What follows is The Betrothed, one of Kipling’s first published poems, appearing in “the civil and military gazette”, Lahor, India (near Afghanistan), November, 1888. Kipling was an assistant editor). It has a more traditional view of women, or of British women who do not go out murdering, but who do wish to control/ stop a British man’s cigar smoking. In a sense, such stoppage is murder. The inspiration was a breach of ‘Promise of Marriage’ case in Glasgow, August 1888, where a young woman, Maggie Watson, sued her fiancee because he continued to smoke cigars after she insisted he stop. Kipling explores the psychology of the choice between smoking and marriage. I think Freud would approve.
The Betrothed.
OPEN the old cigar-box, get me a Cuba stout, For things are running crossways, and Maggie and I are out.
We quarrelled about Havanas—we fought o’er a good cheroot, And I knew she is exacting, and she says I am a brute.
Open the old cigar-box—let me consider a space; In the soft blue veil of the vapour musing on Maggie’s face.
Maggie is pretty to look at—Maggie’s a loving lass, But the prettiest cheeks must wrinkle, the truest of loves must pass.
There’s peace in a Larranaga, there’s calm in a Henry Clay; But the best cigar in an hour is finished and thrown away—
Thrown away for another as perfect and ripe and brown— But I could not throw away Maggie for fear o’ the talk o’ the town!
Maggie, my wife at fifty—grey and dour and old— With never another Maggie to purchase for love or gold!
And the light of Days that have Been the dark of the Days that Are, And Love’s torch stinking and stale, like the butt of a dead cigar—
The butt of a dead cigar you are bound to keep in your pocket— With never a new one to light tho’ it’s charred and black to the socket!
Open the old cigar-box—let me consider a while. Here is a mild Manila—there is a wifely smile.
Which is the better portion—bondage bought with a ring, Or a harem of dusky beauties, fifty tied in a string?
Counsellors cunning and silent—comforters true and tried, And never a one of the fifty to sneer at a rival bride?
Thought in the early morning, solace in time of woes, Peace in the hush of the twilight, balm ere my eyelids close,
This will the fifty give me, asking nought in return, With only a Suttee’s passion—to do their duty and burn.
This will the fifty give me. When they are spent and dead, Five times other fifties shall be my servants instead.
The furrows of far-off Java, the isles of the Spanish Main, When they hear my harem is empty will send me my brides again.
I will take no heed to their raiment, nor food for their mouths withal, So long as the gulls are nesting, so long as the showers fall.
I will scent ’em with best vanilla, with tea will I temper their hides, And the Moor and the Mormon shall envy who read of the tale of my brides.
For Maggie has written a letter to give me my choice between. The wee little whimpering Love and the great god Nick o’ Teen.
And I have been servant of Love for barely a twelvemonth clear, But I have been Priest of Cabanas a matter of seven year;
And the gloom of my bachelor days is flecked with the cheery light Of stumps that I burned to Friendship and Pleasure and Work and Fight.
And I turn my eyes to the future that Maggie and I must prove, But the only light on the marshes is the Will-o’-the-Wisp of Love.
Will it see me safe through my journey or leave me bogged in the mire? Since a puff of tobacco can cloud it, shall I follow the fitful fire?
Open the old cigar-box—let me consider anew— Old friends, and who is Maggie that I should abandon you?
A million surplus Maggies are willing to bear the yoke; And a woman is only a woman, but a good Cigar is a Smoke.
Light me another Cuba—I hold to my first-sworn vows. If Maggie will have no rival, I’ll have no Maggie for Spouse!
Sigmund Freud with his cigar. The whole attraction of cigars, is a strange one, as Freud knew better than most. Cigars are deadly, but casual, often with a good flavor, and a sucking comfort. The death-risk of one is small and distant. Cigars thus represent risky fun they are thus life, in a temporary, risky way. Marriage is permanence and safe, and binding. The binding permanence is a sort of death, but children are good, and that’s life. Freud’s choice was to smoke himself to death. Kipling got married and eventually gave up smoking.
Robert E. Buxbaum, September 17, 2021. Kipling has a great sense of words, and an attractive sense of the subjects, great and small. For years he was the voice of his generation in Britain, but by the end of his life, his views were unacceptable. sexist. On the other hand, he remained staunchly anti-Nazi, anti eugenics, and anti Soviet. By comparison, George Bernard Shaw was a vocal fan of Stalin, of Hitler, and of the eugenic removal of Jews and other undesirables. Shaw’s words remain fashionable, while Kipling’s do not. Such is the nature of fame.
As bad as our exit from Afghanistan has been, the slow British exit in the 1840s to 1920 was worse. While we lost a lot of stuff and left hundreds of Americans and contractors behind, the British, in their first try at leaving, lost a whole army including thousands of civilians. Then they returned and left repeatedly for 80 years, having to fight against their own weapons and people that they had trained. We did many of the same things the Brits did, like trusting our security to folks we’d been trying to kill, but we have not lost anywhere near as many people (yet) and we have not returned (yet). What follows is a look at the British exit, based mostly on Wikipedia articles: “The First Afghan War“, and the retreat from Kabul, 1842, and the biographies of Shah Shujah and Akbar Khan, pictures below.
Akbar Khan. The British tried to kill him, then negotiated with him. Sketch by Vincent Eyre
Britain’s Puppet King, Shah Shujah, Sketch by Vincent Eyre.
The British went into Afghanistan, as we did, to create a more stable and western-friendly government. Their first act was to remove the king, Mohammed Khan, and install a more pliant leader, Sultan Shujah. Mohammed was part of the Khanate, that is the Moguls (Mongols), a deadly violent group who the British were fighting in India. We did the same when we entered Afghanistan. We removed the elected president, Burhanuddin Rabbani, a “radical Moslem” associated with the Taliban leader, Mohammed Omar, an even more radical moslem. Omar was associated Osama bin Laden who’d attacked the US on 9-11. We replaced these, long-bearded Moslems with Hamid Karzai, a moderate Moslem: short beard, reasonably popular, US-friendly, elected in Bonn, Germany. The problem with Shah Shujah and Hamid Karzai is neither one had legitimacy in the eyes of the people, nor respect from the army, either. In part that’s because we put them in power and kept them there, in part that’s because we never let them lead in war or diplomacy. Our follow-on leader, Ashraf Ghani, had no beard, and even less legitimacy and respect. The Afghan army left Ghani as soon as we started leaving; they’d done the same to Shah Shujah when the British left in 1842.
William Macnaughten, the British Envoy, prison sketch by Vincent Eyre, the same fellow who sketched Akbar and Shujah above.
Shah Shujah had a habit of mutilating those who worked for him whenever he got upset. All of Shujah’s servants were missing ears or noses or testicles. Strangely, this seems to have given him more legitimacy than Ghani had. Perhaps if we allowed our leaders to lead, or at least mutilate, the army would have stayed loyal. Then again, maybe nothing would have prevented the puppet from collapsing when the puppet-master left. Both we and the Brits relied on our own troops to keep the peace, along with payoffs and occasional assassinations (we call those airstrikes). It worked for a time, but did not build loyalty or love.
Among those the British paid off and occasionally tried to kill was Akbar Khan, the son of imprisoned Mohammed Khan. Eventually, the British felt they needed Akbar’s help to protect their exit, as he controlled the hills around Kabul including the old Silk Road that the British hoped to travel. Similarly, in the end, we found we needed Taliban help to clear the road to the airport. We didn’t quite get the help, nor did the Brits.
On December 23, 1841, the British envoy, William Macnaughten, visited Akbar Khan and proposed that he would hand over Shah Shujah and make him king in return for safe passage for 16,500 people under General Keith Elphinstone on a journey from Kabul to fort Jalalabad: 93 miles due east. Akbar agreed, but had Macnoughton arrested and later killed. His body was hung in the bazaar. Akbar seems to have figured that anyone willing to betray his old friend would be likely to betray him as well.
Kipling was stationed in India, near the Afghan border. His view of the locals is rather gruesome.
General Elphinstone left Kabulon January 5, 1842 with 4,500 armed soldiers, several cannon, and 12,000+ unarmed civilians. The going was slow and supplies didn’t arrive. Five days later, January 10, allies of Akbar attacked in the hills and killed or captured most of the group. Akbar invited Elphinstone to tea the next day and announced that the group was now his prisoner. He offered safe passage for the women and children, but demanded payment. The alternative was that they freeze in the hills. Elphinstone, at first refused, then ransomed himself and others, in all nine people. The rest of the group were shot, stabbed, taken by the Afghanis to be wives, or stripped of clothing and left to freeze. Younger children were raised as Afghanis, only identified as British sixty or more years later– the British liked to pretend they had not left them. Of the rest, only two survived. One soldier, William Brydon made it to Jalalabad, January 13, 1842. Elphinstone died in captivity in Kabul, April, 1842. According to Kipling’s poem, the Afghanis mutilated British bodies. More likely it was animals.
Hamid Karzai, American supported President, now under house arrest.
The British re-invaded Kabul several times after that, each time hoping to free captives and show who’s boss. There followed a second Anglo Afghan war (1878-80) and third (1919-20), and arguably a fourth (2001-21). Our exit isn’t as bad, at least not yet. We’ve left behind 200-300 Americans plus hundreds of helicopters, trucks, and high-tech weapons. The Taliban are now in charge, folks we’d tried to kill, all of them were associated with Omar, and several with Osama bin Laden, too. Our security forces have been shot, the embassy translator is scheduled to be beheaded, the new government includes several senior members who had been detained at Guantánamo Bay, released to Qatar in a prisoner swap for Bowe Bergdahl in 2014. Hamid Karzai is in captivity, and we’ve taken 100,000 Afghanis who may not integrate well into US society. But at lest there is no sign we’re going back, not for Karzai, or the Americans, or for anyone else. It’s very bad, but it could be worse. Biden calls it a success. Compared to the British exit, it is so far.
It’s been a while since I did an assessment of hydrogen and batteries for automobile propulsion, and while some basics have not changed, the price and durability of batteries has improved, the price of gasoline has doubled, and the first commercial fuel cell cars have appeared in the USA. The net result (see details below) is that I find the cost of ownership for a gasoline and a battery car is now about the same, depending on usage and location, and that hydrogen, while still more pricey, is close to being a practical option.
EV Chargers. They look so much cooler than gasoline hoses, and the price per mile is about the same.
Lithium battery costs are now about $150/kwh. That’s $10,000 for a 70 kWh battery. That’s about 1/5 the price of a Tesla Model 3. The reliability that Tesla claims is 200,000 miles or more, but that’s with slow charging. For mostly fast charging, Car and Driver’s expectation is 120,000 miles. That’s just about the average life-span of a car these days.
The cost of the battery and possible replacement adds to the cost of the vehicle, but electricity is far cheaper than gasoline, per mile. The price of gasoline has doubled to, currently, $3.50 per gallon. A typical car will get about 24 mpg, and that means a current operation cost of 14.6¢/mile. That’s about $1,460/year for someone who drives 10,000 miles per year. I’ll add about $150 for oil and filter changes, and figure that operating a gas-powered car engine costs about $1,610 per year.
If you charge at home, your electricity costs, on average, 14¢/kWh. This is a bargain compared to gasoline since electricity is made from coal and nuclear, mostly, and is subsidized while gasoline is taxed. At level 2 charging stations, where most people charge, electricity costs about 50¢/kWh. This is three times the cost of home electricity, but it still translates to only about $32 for a fill-up that take 3 hours. According to “Inside EVs”, in moderate temperatures, a Tesla Model 3 uses 14.59 kWh/100 km with range-efficient driving. This translates to 11.7¢ per mile, or $1170/year, assuming 10,000 miles of moderate temperature driving. If you live in moderate climates: Californian, Texas or Florida, an electric car is cheaper to operate than a gasoline car. In cold weather gasoline power still makes sense since a battery-electric car uses battery power for heat, while a gasoline powered car uses waste heat from the engine.
Battery cars are still somewhat of more expensive than the equivalent gasoline car, but not that much. In a sense you can add $400/year for the extra cost of the Tesla above, but that just raises the effective operating cost to about $1,570/year, about the same as for the gasoline car. On the other hand, many folks drive less than 50 miles per day and can charge at home each night. This saves most of the electric cost. In sum, I find that EVs have hit a tipping point, and Tesla lead the way.
Now to consider hydrogen. When most people think hydrogen, they think H2 fuel, and a PEM fuel cell car. The problem here is that hydrogen is expensive, and PEM FCs aren’t particularly efficient. Hydrogen costs about $10/kg at a typical fueling station and, with PEM, that 1 kg of hydrogen takes you only about 25 miles. The net result is that the combination hydrogen + PEM results in a driving cost of about 40¢/mile, or about three times the price of gasoline. But Toyota has proposed two better options. The fist is a PEM hybrid, the hydrogen Prius. It’s for the commuter who drives less than about 40 miles per day. It has a 10kWh battery, far cheaper than the Tesla above, but enough for the daily commute. He or she would use charge at home at night, and use hydrogen fuel only when going on longer trips. If there are few long trips, you come out way ahead.
Toyota 2021 Mirai, hydrogen powered vehicle
Toyota also claims to have a hydrogen powered Corolla or debut in 2023. This car will have a standard engine, and I would expect (hope) will drive also — preferably — on hythane, a mix of hydrogen and methane. Hythane is much cheaper per volume, and more energy dense, see my analysis. While Toyota has not said that their Corolla would run on hythane, it is supposed to have an internal combustion engine, and that suggests that hythane will work in it.
A more advanced option for Toyota or any other car/truck manufacturer would be to design to use solid oxide fuel cells, SOFCs, either with hydrogen or hythane. SOFCs are significantly more efficient than PEM, and they are capable of burning hythane, and to some extent natural gas too. Hythane is not particularly available, but it could be. Any station that currently sells natural gas could sell hythane. As for delivery to the station, natural gas lines already exist underground, and the station would just blend in hydrogen, produced at the station by electrolysis, or delivered. Hythane can also be made locally from sewer gas methane, and wind-power hydrogen. Yet another SOFC option is to start with natural gas and convert some of the natural gas to hydrogen on-board using left-over heat from the SOFC. I’ve a patent for this process.
Speaking of supply network, I should mention the brown outs we’ve been having in Detroit. Electric cars are part of the stress to the electric grid, but I believe that, with intelligent charging (and discharging) the concern is more than manageable. The driver who goes 10,000 miles per year only adds about 2,350 kWh/year of extra electric demand. This is a small fraction of the demand of a typical home, 12,154 kWh/year.It’s manageable. Then again, hythane adds no demand to the electric grid and the charge time is quicker — virtually instantaneous.
It is a fundamental of science that that the properties of every pure one-phase material is totally fixed properties at any given temperature and pressure. Thus for example, water at 0°C is accepted to always have a density of 0.998 gm/cc, a vapor pressure of 17.5 Torr, a viscosity of 1.002 centipoise (milliPascal seconds) and a speed of sound of 1481 m/s. Set the temperature and pressure of any other material and every other quality is set. But things go screwy near surfaces, and this is particularly true for water where the hydrogen bond — a quantum bond — predominates.
its vapor pressure rises and it becomes less inclined to condense or freeze. I use this odd aspect of thermodynamics to keep my platinum-based hydrogen getter catalysis active at low temperatures where they would normally clog. Normal platinum catalysts are not suitable for hydrogen removal at normal temperatures, eg room temperature, because the water that forms from hydrogen oxidation chokes off the catalytic surface. Hydrophobic additions prevent this, and I’d like to show you why this works, and why other odd things happen, based on an approximation called the Van der Waals equation of state:
(1)
This equation described the molar volume of a pure material, , of any pure material based not the pressure, the absolute temperature (Kelvin) and two, substance-specific constants, and . These constants can be understood as an attraction force term, and a molecular volume respectively. It is common to calculate a and b from the critical temperature and pressure as follows, where Tc is absolute temperature:
, (2 a,b)
For water Tc = 647 K (374°C) and 220.5 bar. Plugging in these numbers, the Van der Waals gives reasonable values for the density of water both as a liquid and a gas, and thus gives a reasonable value for the boiling point.
Now consider the effect that an inert surface would have on the effective values of a and b near that surface. The volume of the molecules will not change, and thus b will not change, but the value of a will change, likely by about half. This is because, the number of molecules surrounding any other molecule is reduced by about half while the inert surface adds nothing to the attraction. Near a surface, surrounding molecules still attract each other the same as before, but there are about half as many molecules at any temperature and pressure.
To get a physical sense of what the surface does, consider using the new values of a and b to determine a new value for Tc and Pc, for materials near the surface. Since b does not change, we see that the presence of a surface does not affect the ratio of Tc and Pc, but it decreases the effective value of Tc — by about half. For water, that is a change from 647 K to 323.5K, 50.5°C, very close to room temperature. Pc changes to 110 bar, about 1600 psi. Since the new value of Tc is close to room temperature, the the density of water will be much lower near the surface, and the viscosity can be expected to drop. The net result is that water flows more readily through a teflon pipe than through an ordinary pipe, a difference that is particularly apparent at small diameters.
This decrease in effective Tc is useful for fire hoses, and for making sailing ships go faster (use teflon paint) and for making my hydrogen removal catalysts more active at low temperatures. Condensed water can block the pores to the catalyst; teflon can forestall this condensation. It’s a general trick of thermodynamics, reasonably useful. Now you know it, and now you know why it works.
The toll of COVID-19 has been terrible: 660,000 dead by my count, based on excess deaths, graph below, or 620,000 according to the CDC based on hospital records. Death rates appear to have returned to pre-pandemic levels, more or less*, but folks are still getting very sick and going to the hospital, mostly for “the delta variant.”
Weekly US death rates since October 2015.
As the following chart shows, severe symptoms of COVID are now almost entirely in the old, and unvaccinated. The risk to the young and middle aged is low, but even there, vaccination helps. According to the CDC, 72.2% of the adult US population is vaccinated with at least one shot. The vaccination, doesn’t prevent you from getting the delta variant nor from spreading it; it just protects from the most serious consequences of the disease. It seems a previous infection has the same effect, though less so.
Vaccination helps prevent hospitalization – at all ages (Israeli data)
If you’re over 60 and unvaccinated, I recommend getting vaccinated with at least one shot; the inconvenience and side-effects are few, and the benefit is large. The second shot seemswothshile too, and for all I know a third will too. Sooner or later there is a diminishing return. The benefit of masks seems is smaller, as I judge things. I notice that the disease is spreading at about the same rate in masked and unmasked states, and that the death numbers are as high, or higher in heavily masked, blue states as in red. New York and NJ are the top COVID death states, with Michigan not far behind. Masks seem to help, just not very much.
If you wish to check my analysis, go here to get the raw data: https://gis.cdc.gov/grasp/fluview/mortality.html. Then, to calculate the COVID effect, I subtracted the weekly death rates in 2020 and 2021 from the corresponding week rates in 2019, correcting the deaths by 1%/year for population growth and aging. *I find that there are about 500 excess deaths per week, and I assume those are among the unvaccinated. If you are vaccinated, I’d worry about something else besides COVID-delta: heart attack, cancer, suicide, or Afghanistan.
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