cannabineer
Ursus marijanus
I’m curious about that furnace’s purpose and operating temperature.
Climate in the 21st Century
- Thread starter Jimdamick
- Start date
printer
Well-Known Member
Heat treating aluminum, has a range from 700 - 1200F. The upper temperature was not used for aluminum but to temper steel parts although we never used it at that temperature, normally around 920 - 1000 F. We had other atmosphere furnaces that did steel parts up to 2200 F, vacuum furnaces that did up to 2200F. Branded myself on a few ovens that go up to 500 F that were used for tempering aluminum. Some ovens used for baking composite parts, a few autoclaves to do the same.
Last edited:
cannabineer
Ursus marijanus
Electric, or fueled?
printer
Well-Known Member
Electric, the steel atmosphere furnaces had a nitrogen atmosphere with a little natural gas that decomposed resulting in carbon being availible to help the part from losing carbon on the surface.
DIY-HP-LED
Well-Known Member
DIY-HP-LED
Well-Known Member
They don't believe in climate change in Alberta!
Banning the tarsands in Alberta, will be like banning guns in America even though it is the leading cause of death among youth. The forests can burn down, and the desert move north, but it will make no difference.
Banning the tarsands in Alberta, will be like banning guns in America even though it is the leading cause of death among youth. The forests can burn down, and the desert move north, but it will make no difference.
DIY-HP-LED
Well-Known Member
Solar panels last for 25 to 30 years as will batteries, so these things will accumulate. People will continue to invest in and use fossil fuels until demand for them drops, and when demand drops, so too will the price until it is not profitable because of price, tax and regulation. I expect demand for gasoline to be the first victim of this process with people converting to EVs and North America is lagging behind most other places on that. Utilities should be the next in line for conversion with wind, solar and grid scale storage. I do think a distributed generation and storage plan will work here to supplement the regular grid for solar generation and storage by home and business owners. The model of fast charging has physical problems especially with large vehicles and people should be charging from home for practical and economic reasons. There will be fast chargers, but a lot of people either won't use them or will use them on road trips.
We are going to have to make some major adjustments to our lifestyles and purchasing decisions, how an EV will be charged will be a factor in them. I won't be around for much of it or the consequences of delay myself, but I expect to see big changes in the next decade nonetheless because we are ramping up for it now.
As for the trillion in fossil fuel investments
Sunk cost - Wikipedia
en.wikipedia.org
printer
Well-Known Member
Where do you get that solar panels and batteries will last 25-30 years?Solar panels last for 25 to 30 years as will batteries, so these things will accumulate. People will continue to invest in and use fossil fuels until demand for them drops, and when demand drops, so too will the price until it is not profitable because of price, tax and regulation. I expect demand for gasoline to be the first victim of this process with people converting to EVs and North America is lagging behind most other places on that. Utilities should be the next in line for conversion with wind, solar and grid scale storage. I do think a distributed generation and storage plan will work here to supplement the regular grid for solar generation and storage by home and business owners. The model of fast charging has physical problems especially with large vehicles and people should be charging from home for practical and economic reasons. There will be fast chargers, but a lot of people either won't use them or will use them on road trips.
We are going to have to make some major adjustments to our lifestyles and purchasing decisions, how an EV will be charged will be a factor in them. I won't be around for much of it or the consequences of delay myself, but I expect to see big changes in the next decade nonetheless because we are ramping up for it now.
As for the trillion in fossil fuel investments
Sunk cost - Wikipedia
DIY-HP-LED
Well-Known Member
From the posts of articles and videos I made in this thread, silicon based solar panels have a lifetime of about 25 years currently and several grid storage batteries are under development that will last that long. Sodium based batteries are expected to last thousands of cycles too and they should dominate home solar storage, there are also posts related to that in this thread. There are other chemistries that promise long life for EV and home power storage, and I believe several different types will be used depending on the circumstances, redux flow batteries appear to be what will be used for largescale grid storage and there are several options in that category too.
Have a look through the thread, most of the posts about batteries are about things entering production or soon will be. The references are too many to list and have been in this thread already. I try to keep things about climate change solutions orientated.
DIY-HP-LED
Well-Known Member
25 to 30 years
When you're doing your research for this sustainable energy source, it's important to factor in how long solar panels typically last. The industry standard for most solar panels' lifespans is 25 to 30 years. Most reputable manufacturers offer production warranties for 25 years or more.Apr 12, 2023
How Long Do Solar Panels Last? - Forbes
cannabineer
Ursus marijanus
How long do rooftop residential solar panels last?
Multiple factors affect the productive lifespan of a residential solar panel. In the first part of this series, we look at the solar panels themselves.
In its annual Module Score Card study, PVEL analyzed 36 operational solar projects in India, and found significant impacts from heat degradation. The average annual degradation of the projects landed at 1.47%, but arrays located in colder, mountainous regions degraded at nearly half that rate, at 0.7%.
Lotta people don’t figure in heat-cycle degradation. Out here in the Mojave you can lose 20+% in fifteen years. Add to that that panels typically lose 0.35% output for every degree C above reference 25 (panel temp, not air) and that on a decent summer day a panel
can hit 70°C easy, it only gets worse.
printer
Well-Known Member
And then there is the batteries. Li batteries degrade even if you do not use them.How long do rooftop residential solar panels last?
Multiple factors affect the productive lifespan of a residential solar panel. In the first part of this series, we look at the solar panels themselves.pv-magazine-usa.com
In its annual Module Score Card study, PVEL analyzed 36 operational solar projects in India, and found significant impacts from heat degradation. The average annual degradation of the projects landed at 1.47%, but arrays located in colder, mountainous regions degraded at nearly half that rate, at 0.7%.
Lotta people don’t figure in heat-cycle degradation. Out here in the Mojave you can lose 20+% in fifteen years. Add to that that panels typically lose 0.35% output for every degree C above reference 25 (panel temp, not air) and that on a decent summer day a panel
can hit 70°C easy, it only gets worse.
You have some magic batteries?
cannabineer
Ursus marijanus
(bracing for barrage of wildly speculative tech vids)
printer
Well-Known Member
Never a shortage.
DIY-HP-LED
Well-Known Member
Batteries are on the way and several different chemistries are being offered. It is not what is avail right now that will make the biggest difference, but what will be over the next 5 or ten years and current lithium chemistries won't be around forever, they will be supplanted by others. I post articles with links to the papers they are based on too and videos for general consumption that are not really that speculative as I try to stick to things we might see in 5 or 10 years. This thread is more about information to base policy on, the science is often linked to for those who can digest it.
Right now, a limited number of lithium chemistries are in wide use, and these have issues with safety and longevity, but practical advances and improvement to even these are made regularly. I hope you don't consider MIT to be too speculative?
What’s next for batteries
Expect new battery chemistries for electric vehicles and a manufacturing boost thanks to government funding this year.
Sativied
Well-Known Member
From the land with most fast chargers per square mile, almost 40% of EV owners use them (over 22kW AC up to 350kW DC) “regularly”, 6% almost always. It’s not suitable for some smaller models but CCS is supported by nearly 20 brands ranging from small to large vehicles. One of the main problems holding back EU is the lack of fast chargers. Sure, definitely applies to road trips too, but at least as common is fast charging at MacDonalds (nearly every location here has them). What does play a role in those numbers is high energy rates here atm (so charging at home isn't that much cheaper) and the high gas rates, to which most EV drivers still compare the cost. The little extra saving doesn't weigh up to charging to 80% in 30 min or less. Completely removes charge and range phobia, always a fast charger near and barely takes more time than filling up with gasoline at a busy gas station. Fast charging is actually the more practical way, not everyone owns a car port or garage, in fact, most here don't even own there own parking space so it requires a cable to the public street. Especially tricky when you're not on bottom floor.
How long batteries last isn't the key issue, the cost per month/year is. But the lack of affordable battery now and lack of sunlight in dark hours is no excuse to not use solar now. What helps is a government that forces energy companies to pay for any excess people put onto the grid, although that deal is slowly being phased out with the expectation of more affordable batteries becoming available in a few years.
DIY-HP-LED
Well-Known Member
I was looking at the news of the new battery I posted in the thread above that charges very fast and the physical limitations of how much energy you can safely transfer to the battery in 3 minutes or even 10 minutes. With a smaller EV there are not too many issues with either fast or home charging, but with the North American kilowatt guzzlers like SUVs and half tons it will be an issue, dumping that much energy into a massive battery in a vehicle that gets three or four km per kWh. In North America cities are surrounded by suburbs of single-family dwellings with many homeowners and industrial parks.
In Europe there are not so many single-family houses and cars tend to be smaller, here many people require 3 tons of steel to drive to the corner store for a jug of milk or go to work, for many size matters, the bigger the better. GM just stopped production of the small energy efficient bolt EV in favor of the more profitable huge electric half tons.
DIY-HP-LED
Well-Known Member
I was referring to this battery technology that can charge to full in 3 minutes, comparable to gassing up the traditional way. The problem is getting all that power into the battery in a short period of time and the problem is compounded the larger and heavier the EV is. I imagine most people don't want to stop for a half hour charge in the morning or after work and on the road trips, unless they are having a meal while charging.
The charging limitation with this battery is the charging system.
Prieto Introduces Battery That Charges In 3 Minutes - CleanTechnica
Prieto, based in Fort Collins, Colorado, says an independent lab has verified its fast charging and low temperature claims.
cleantechnica.com