Home » Posts tagged 'renewable energy'
Tag Archives: renewable energy
Although this blog was begun to publicise my own fiction, there are so many interesting things to write about that the fiction element has been displaced by other kinds of stories; stories about geopolitics, concerns about global change (of which not least, climate change), and new developments in science and technology.
It currently seems to me, as an informed layperson, that the answer to the planet’s global warming crisis lies primarily not so much in technological advances as in social engineering for change. For example, livestock farming produces 18% of global greenhouse gas emissions. Halving the consumption of meat, to take only one measure, would have enormous health benefits for individuals and at a stroke, reduce greenhouse gas emissions. That’s the equivalent of removing the 2015 contributions of the two most populous countries, India and China! According to a 2006 FAO report, Livestock’s Long Shadow (416 pp.), cattle alone are responsible for more global warming than all forms of transportation put together.
Another quick fix would be to reduce national defence budgets and invest the money in women’s health and education, easier said than done, considering the political madness that one sees in countries around the world. This too can be changed if enough people around the world set their minds to it and realise that we, the people, are the drivers of political change. Politicians are servants. They are merely people responding to our collective angsts and biases.
As global temperatures rise, people try to cope by installing air-conditioning units. This compounds the problem, since electricity consumption multiplies and heat dissipates to the outside world, creating urban heat islands and causing yet more global warming. It’s like polluting an ocean. Imperceptible when only one person does it, but massive when done by millions. Here’s an exciting technological fix in the works that might help to solve the air-conditioning problem: thermoacoustic cooling.
The principle was apparently observed by glassblowers more than two centuries ago. They noticed a sound was created when blowing a hot glass bubble at the end of a cold, long tube. 19th century scientists figured the sound was produced by the thermal gradient, and resonance was giving extra energy to the air in the tube. Apparently the first modern application to capture this energy for cooling was used in NASA’s Space Shuttle Discovery in 1992. Today, there seem to be two companies, in the Netherlands and in France, who offer solutions based on this principle for pollution free cooling. Here’s a link to the websites of Dutch company, SoundEnergy and France-based Equium. The sooner such companies are commercially successful, the better for the planet. Here’s a simple demonstration of the principle showing the working of a thermoacoustic engine.
There’s a new car sharing company in town called Caroo mobility (caroo.at). Their selling point: e-cars only, offering a choice of makes and models that are fun to drive and easy to manoeuvre in town. They offered initial longer term rentals to volunteer alpha testers, so I took a BMW i3 for 2 days. The test package included 200 free kilometers per day, so I was looking forward to several test drives around the city and surrounding countryside. Recharging at the local energy utility’s (Wien Energie) 22kW installations was a breeze and took around two hours for a full charge (180 km in winter). The company supplied two different charging cards for the car. A smart phone app, quickly downloaded from a wide range of choices on the app store, showed several hundred charging points in and around the city. I should have remembered Murphy’s Law at this point!
We travelled outside the city on the second day, planning to visit two different towns south and east of Vienna, travelling around 220 km in all. Fully charged, the dashboard showed 180 km range left so we thought, armed with two charging cards, no problem. We’ll charge somewhere along the way. The two phone apps of charging stations, hastily downloaded in the morning, chosen at random from more than a dozen, showed scores of charging stations around the two towns and along the highway. We set off, the car fully charged and showing 180 km of range left on a cold, clear winter morning. By the time we reached the first town, 50 km distant, the screen showed we had 115 km of range left, not bad at all, considering the heating was set to 20C and we drove at modest highway speeds. After our visit in the first town, we had plenty of juice left for the next town, 70 km away. Our apps showed several charging stations at the next town, but we decided to play it safe and top up the charge before heading off. Our real EV learning experience began here.
At the first charging station, run by a different utility, our cards were compatible, but the car did not charge. I called the hot line of the utility and was assured, if the pillar light was green, the charge should work. Green lights all around, no charge! The helpful hotline lady said, sometimes these things are finicky. Try disconnecting and reconnect again. Tried this several times, no luck. So we drove around the outskirts of the first town for an hour, looking for other charging stations. Found another one. The chargers were not Type 2, the ones we needed. By this time our range had come down to 90 km, still enough to make it to the next town. Unsure of what would happen there, we decided to head back to Vienna on the highway, where there are a few charging stations. All of the charge stations were badly marked, so we missed the exits to two. Finally pulled into a giant service station where we found a bank of 6 high speed chargers, labelled 150 kW, 175 kW. The plugs were incompatible with our car. I assumed they were CCS, to allow high power DC fast charging, and was afraid they would fry our batteries even if I could connect. There was one 44kW pillar, where the BMW’s plugs were compatible, but our two charging cards were not valid here. So we ended up driving an extra hour back to Vienna to fully charge the car at one of the city’s charging stations.
So my short summary here. The BMW i3 is beautiful to drive with many well thought out details, some design quirks that don’t really work for me on first use (like the back doors opening backwards), beyond my budget, with the bare bones version starting at around €40,000. So when I buy an electric car later this year, it’s going to be a used Renault Zoe at 25% of the price of an i3, with a monthly rental fee for the battery. A word about the rental fee that begins at around €60 per month; it might sound like an additional financial burden, but remember that battery rental will keep your insurance costs low, since the most expensive component of the car does not have to be insured. Worth keeping in mind when you decide on a purchase plan. And the last word. Before I (or you) buy an EV, download a good app of local charge points and make sure you study the specs, not only of the car, but of charging port requirements with their corresponding charge cards or apps.
The world is full of stuff and many parts of the world are drowning in it. Except for those parts of the world where people don’t have any stuff at all. Nothing to speak of.
Within our family, we stopped giving stuff as gifts quite some time ago. Nowadays, we mark occasions such as birthdays, anniversaries and significant celebrations with the gift of time.
The planet has plenty of time to spare, even though humanity does not. In a few hundred years, or a thousand years, even if mankind has pursued its current illusion of prosperity to oblivion, the planet will sedately roll on, and prosper without us. Just as it prospered long after the last dinosaur ceased to exist.
When Isaac Watts wrote his hymn, based on the 90th Psalm, he was not thinking of humanity’s self-induced annihilation as he composed the following lines.
Time like an ever rolling stream, bears all its sons away
They fly forgotten as a dream, dies at the opening day.
For those ‘successful’ busy people who have no time at all to spare, here’s a suggestion for a gift of stuff that’s actually a gift to the planet and buys us time. This gift has the added benefit of helping people who don’t have much stuff at all. Here’s a link to an Impact Calculator from Solar Aid. With enough gifts like these, perhaps one day we can sit down with Gaia and have the last laugh together.
Consider me. Or consider yourself. Presumably an average human being of average weight. These averages vary considerably in different parts of the world, from 60 kilos or less, to 90 kilos or more. Looking back at the various means of transport that I have commonly used in the past five decades, I made a list of their approximate weights for comparison. My own weight has changed (increased!) by 5 kilos during this period, from 75 to 80 kg.
Bicycle: Throughout my schooldays, I used a single speed bicycle to take myself (40 to 65 kg.) to school and back. I assume bicycles weighed around 25 kg. in those days. In any case, the means of transportation was around a third of my own body weight. I loved the song of the open road. Most days I arrived at school in a lather of sweat, but no one really bothered about that.
My first job was as a travelling salesman and the most efficient way to do this at the time was with a motorbike or scooter. Traffic congestion was not yet a problem in the 1970s to 90s. I loved the song of the open road. Most days I arrived at work or at a customer feeling dapper and cool, even though a bit windblown. The weight of the motor-scooter or motorbike I owned or rode at various times in this period varied from 130 to 150 kg. My own weight at this time was a svelte 75 kg.
From the late 70s to the 1990s my preferred mode of transport was a private car. I loved the song of the open road, although traffic was constantly increasing. Loved to drive long distances on holiday. Car weights varied from 840 kg (1976 first generation VW Golf) to 1400 kg (same model 25 years later) to 1700 kg (minivan). In spite of long distance holiday travel with family, 90% of the annual miles were clocked commuting to work and back. i.e. 1000s of kilometers with just one occupant. i.e. using 1400-1700 kg to transport 80 kg of human being. Forget the song of the open road! Most daily commutes were exercises in creeping through congested streets and highways, impatiently waiting to get to work or home.
From the early 2000s onwards, my thinking about the daily commute evolved (?) as follows. Car (1700 kg, 40 minutes), bus (kg irrelevant, 80 minutes), bicycle (16 kg., 70 minutes). The bicycle was definitely a step forward in efficiency and economy. It cost practically nothing, and also gave added health benefits, although I arrived in a lather at work, as I did in my school days, and had to repair to a toilet for a cat-wash and a change of clothes.
Around 2005, I began to yearn for pedal assist on my bicycle and began to look around for electric models. There were none available as far as I could see. Sometime in 2006, I found a German website on the internet that advertised an electric bicycle with a 1 year guarantee, a 7 kilo NiCad battery pack, and no range specifications. I was tired of a steep hill on my daily commute (36 km per day), so I ordered the bike sight unseen and two weeks later, took delivery of a giant cardboard carton with MADE IN CHINA printed on the sides. It weighed 32 kg with battery, had seven gears and was a real pain to carry up and down to the cellar where I stored it overnight.
But it did the job nicely. The hill was a problem no more. And the range was around 30 km. Unfortunately, NiCad batteries suffer from a memory effect, and I could not charge it in the office for the ride home, so I got minimal assistance on the dreaded hill with a fading battery.
Ah, the perfect solution! Sometime around 2008, I saw a beautiful 24-speed KTM with the cutest little Li-ion battery that was good for 60 kms of pedal-assist riding. By this time, I had moved homes and my daily commute had increased to 50 km. Here was the answer to my commuting problems. The KTM bicycle weighed 22 kg, I weighed 80 kg., and the electricity cost me around €0.30 for 100 km (30 cents). My friends considered the electric bike expensive. It was expensive, in bike terms, but in reality cost about as much as the annual service of the average 1700 kg. monster. Maybe that’s comparing apples and oranges, you say. But such comparisons are ok when you’re riding an apple, and have gotten rid of the orange. Needless to say, I sold the 1700 kg. monster and have lived happily ever after.
Nowadays people tell me, you can’t ride around on a bicycle at your age! It’s too dangerous to ride a bicycle in this murderous city traffic. True. But I wear a helmet and try to ride cautiously. I’m happy carrying my current 79 kg. on two wheels weighing 22 kg., and wouldn’t dream of carrying it in 1700 kg. as I used to do. The difference in weight (ca.1,678 kg) I like to think of as the weight of fear. That’s quite a lot of fear to carry around in one’s life. Best to get rid of it!
See this author’s page at Amazon.com to read more of his work
The Climate Action Tracker posts regular progress reports on how well various countries are doing to adhere to the Paris Agreements. It tracks emissions from 32 selected countries and the list of the good, the bad, and the ugly is quite surprising even to this seasoned watcher.
Only two countries are on track to fulfil the Paris goal, of limiting emissions to keep global temperatures from rising above 1.5 degrees C; Gambia and Morocco.
The second best choice made in Paris was, if not 1.5 degrees, then at the least 2 degrees C. Just 5 of 32 countries meet this target. Bhutan, Costa Rica, Ethiopia, India and Philippines. All of the remaining 25 countries fall into the category of emitters that will lead to a world of 3 degrees warming or more. See the original list here.
Of course this predicator of doom and gloom relies only on official government policies. The reality on the ground may be a bit different in many of the countries on the list. For example, despite their governments, a few cities, power companies and private individuals already find it cheaper to produce unsubsidised renewable energy, a trend that will speed up, just a cell phone sales did in developing country markets worldwide.
See this author’s page on Amazon.com to read more of his work
Most media outlets seem to operate under the principle that bad news is good news or alternatively, good news is not news. They may be right, in terms of profitability. But they are definitely wrong, in terms of the collective well-being of humanity. This blog is not dependent on readership or advertising revenues, so it can afford to print good news without fear of losing its readership. So here for a start is good news from the energy front.
All of the electricity used by two of the world’s largest corporations, Apple and Google, were from renewable sources by the end of 2017. This is a remarkable achievement, considering that each of these companies uses more electricity than many small nations, not least to power immense data centers scattered around the world. So now, if you have worries about the amount of personal data Facebook & Co. are collecting about you because of their opaque terms of usage, rest assured that they’re not polluting the planet in the bargain.
But seriously, there’s lots of impressive news in the energy area alone. Here’s a chart, courtesy of National Resources Development Center, showing how prices have come down for major clean energy technologies.
Since clean energy is one of the basic requirements for human development, there’s not much stopping world-wide implementation, is there? Capital for investment? It’s increasingly concentrated in the hands of a few–rich corporations and rich individuals. So are we ordinary mortals totally helpless? No, not at all. But we have to make smart choices as customers. We can enrich our lives, and the planet in the process, by getting off the mindless consumption lifestyle that the glossies would have us aspire to.
In one hour, the earth receives more solar energy than the world uses in one year. Now that’s good news and worth repeating, even if its not new. So why are companies producing more dirty diesel cars and building more fossil fuel power plants? Because switching technologies means moving out of comfortable niches of expertise that would otherwise become useless; it would mean new investments, experimenting with new technologies, and why should they take all these risks when customers are flocking to buy new models anyway? As engine size and horse power of new automotive offerings increase, so do their profits, and they see even less reason to invest in new technologies. It’s only we, the customers, who can break this vicious cycle.
English speaking news readers tend to digest information from an overwhelmingly anglocentric or eurocentric point of view. Hence I was not surprised recently to hear a friend accuse the Chinese of polluting the planet when actually, despite (or perhaps because of) a totalitarian regime, they are doing more to clean up the earth than any other nation. For example, the southern Chinese city of Shenzen alone runs a fleet of 16,000 (yes, thousand) electric buses; more than the rest of world combined. So while air quality in Beijing might be abysmal, this past winter, particulate pollution was 50% less than in the previous year. This from no less a source than the US Embassy in Beijing! One reason for the lower levels of pollution might be that China installed more than 53 GW of solar power in 2017.
The above facts don’t make me an apologist for an autocratic government where power is increasingly concentrated at the top. This is undoubtedly a very worrying tendency, one that is being seen in several other large countries like India, Russia, Turkey, China and the United States. In the US case, its robustly democratic political system has been hijacked by corporate lobbies. Nevertheless there is good news coming from each of these countries, and I will try to highlight these bright spots in future posts.
See this author’s page at Amazon.com to read more of his work.
Ever wanted to go on an ocean liner? Cruise ship advertisements idealise the high life to be had on the high seas. What they never say is how much ships pollute. The average ship runs on low grade oil, which can be likened to a sludge that emits more particulate matter than a million cars; more sulfur than seven million cars. And that’s just one cruise liner!
Several Scandinavian ferries now run on hybrid diesel-electric systems but, as in most advances in electric propulsion these days, China is taking the lead, as a cargo ship with a 2.4 MWh battery pack launches in Guangdong. Ironically, the ship will be used to transport dirty coal!
Car makers have a problem. They don’t admit it yet. Or maybe they do admit it to themselves, although not in public. Why should they, when enough people are buying bigger cars? Global car sales in 2017 were close to 90 million vehicles in all categories, including SUVs and light trucks. That’s roughly 1 car for every 77 people. Less than 1% of these were electric. How many more cars do we need? Car companies are powerful entities that are in the business of selling dreams; dreams of freedom, of the joy of the open road, dreams of independence. The irony is that as we buy into the dream, we destroy the very foundation on which our dreams are based.
See this author’s page at Amazon.com to read more of his work.