Guoxuan ‘Gotion’ has agreed to supply a major American EV maker [Tesla] with 200 GWh from 2023 to 2028.
He said Gotion has demonstrated an LFP cell that has 210 W per kg. That’s amazing. Currently, BYD LFP cells are at 155 W/kg and CATL is at 140 W/kg.
He said that Elon Musk has tweeted, “LFP batteries are the chemistry of the future.”
LFP batteries use no cobalt, no nickel. They use lithium, iron and phosphate. Lower cost, easier materials to obtain and safer, less prone to catch fire.
The coffee may become more expensive and more difficult to obtain. But everyone will have to eat less meat, especially beef, and less dairy products. We will have to switch to chicken, which takes less resources to grow. Or just give up meat and eat a plant based diet.
Please read these words and enjoy the thoughts because someday the coffee, the chocolate and the wine may only be affordable by the rich, just like private jets.
https://sustainablesong.medium.com/private-jets-and-coffee-68081cd1d406
A string of LED xmas lights had been fritzing on and off, then it finally failed. I had to pull out 4 lights before I found two that were dead. I had to file off the ridge around the base to get them to fit properly into the base. So it’s back working again.
It so happened that both bad ones were blue, which led me to believe that since blue has the highest forward voltage, they get the warmest and go bad first. Or instead, is it that the LED string has to handle the peak reverse voltage of the AC line, which is 180 volts? The LEDs flicker at 60 Hz so there is no filter capacitor. I don’t think there is a capacitive dropper hidden in the plug.
I was thinking about how to prevent the series string of LEDs from all going dark when any one LED goes open. I have thousands of 1N4731 4.3 volt Zener diodes that I could probably put across each LED so that if it goes open, the current would flow through the zener instead and keep the string running. But I would have to butcher the wiring to hide them where they’re not a shock and safety hazard.
One other thing that puzzles me is why there are 2 wires from the plug to the first LED then 3 wires between the rest of the LEDs. Maybe I’ll do some searching online for a wiring diagram.
To help trace down the presence of AC on the wires, I made the circuit commonly found on the web that has three transistors connected so the emitter of the first feeds the base of the second and the emitter of the second feeds the base of the third. This gives a compounded current gain of about 200 times 200 times 200 or about 8 million. So the AC electrostatic field of a ‘hot’ wire near the 4 inch antenna lights up the red LED. The 3V coin cell is a bit underpowered – it would be brighter with a 6 volt battery.
https://cleantechnica.com/2022/01/21/unpacking-the-electric-cars-arent-as-green-as-you-think-claims/
Quote:
<< Final Thoughts
All this talk about carbon emissions overlooks one important point. In addition to the carbon dioxide that pours out of the tailpipes of conventional cars, they also spew a cloud of fine particulate matter into the atmosphere. Whether its coal, oil, gasoline, or diesel, fossil fuels create FPM pollution when they are burned. Fine particulates are so small they pass directly into the bloodstream in the lungs and travel to every part of our bodies, from our brains to our livers to our toes. They are found in breast milk and human placentas. They impair cognitive function, make us ill, and make us die sooner than we should. And for this the fossil fuel advocates want to bash electric cars? What is wrong with you people? >>
They say the problem with battery energy storage is that they say it’s not long-term; for renewables we need long-term energy storage. Pumped hydro has been used for a hundred years. Nothing high tech or no scalability issues. Just dig two lakes, one above the other, with pumps and generators between them. The costs may be high but those are paid back by savings in zero fossil fuel renewable energy.
Quote:
<< The water can cycle between upper and lower reservoirs for a hundred years or more. Evaporation suppressors — small objects floating on the water to trap humid air — can help reduce water evaporation. In all, the amount of water needed to support a 100% renewable electricity system is about 3 liters per person per day, equivalent to 20 seconds of a morning shower. This is one-tenth of the water evaporated per person per day in the cooling systems of U.S. fossil fuel power stations. >>
<< Australia is installing solar and wind three times faster per capita than the U.S. and is already facing the need for mass storage. It has two systems under construction that are designed to have more energy storage than all the utility batteries in the world put together; another dozen are under serious consideration. None involve new dams on rivers. The annual operating cost is low, and the working fluid is water rather than battery chemicals. >>
A new pumped hydro storage system wil be installed in the Kidston gold mine in Australia, by 2024.
https://cleantechnica.com/2022/01/25/theres-a-new-kind-of-gold-in-them-there-pits/
It says there are other states that have public owned electric power. What needs to be done is speed up the changeover to renewables and stop burning fossil fuels and, most importantly, stop the utilities from dragging their feet when it comes to the changeover.
There will be a huge demand for batteries in the future according to CATL. They are bringing a huge factory online but the demand will be greater over the next few years. The demand is growing.
This opinion article exposes the bad business practices that utilities are guilty of.
The electric utilities abuse the ratepayers by passing on their disinformation and bad decisions in the form of increased electricity costs.
