jcussen
-
Posts
680 -
Joined
-
Last visited
Posts posted by jcussen
-
-
Just now, durangodon said:
Wow. Did that make you think about running a small heating duct to the battery compartment? Or, can you do something like that with lithium batteries?
You could, on my Foretravel. the batteries are in a insulated compartment and you would need prolonged sub zero temps to bring those batteries down below 32F.
On my Sprinter, the batteries just hang down below the entry steps in the open, so no real good way to insulate or heat them, they are the ones that would not take a charge until they warmed up. But normally don't drive it unless temps are moderate.
-
During the Texas freeze, temps got down to 8 F and the battleborn's still provided power to my furnace and 12 volt loads, however, they would not take a charge till about 30 F.
-
2 hours ago, GlennWest said:
Actually I will. Have the batteries and dc/dc converter now. All I need to do is add inverter. Work coming around so that should not be long away now. I don't have any evs but believe most of us will in near future. Interesting.
I was replying to the OP's original post, and he may or may not have any 48+ voltage equipment already. Do not know voltage of the Sondors motorcycle, but the Zero electric motorcycle battery runs at 100 volts. He will have to have to change whatever those batteries put out, to utilize them.
-
Believe most e bikes and e motorcycles will have a 48+ volt battery pack. Not so easy to mate to your 12 volt coach, unless you have dedicated inverters, dc chargers etc to handle that higher voltage.
-
I believe batteries that are rated in watts, kilowatts or megawatts are what they can supply for 1 hour, or in a batteries case kw/h. My 21 kw battery will supply 21 kw for 1 hour so is actually a 21 kw/h battery. The 1000 MW South Australian Tesla battery is fed from a 330 megawatt solar array. So once the original cost of the solar panels and installation are meet, it will be free power.
-
Looks like a the 100 megawatt battery is actually 100 megawatt hours. So will empty in one hour at that rate, but for lesser draws, could last long enough to get some other power sources online. eg 250 megawatt hours for 4 hours. And if it has its own solar panel farm feed, even longer. Appears to be well worth it.
https://www.cnet.com/news/worlds-biggest-solar-and-battery-storage-farm-coming-to-south-australia/
-
43 minutes ago, 2gypsies said:
We both worked at a pharmaceutical company (which folks are now getting vaccines from). We worked with studies. This Danish study would never fly. It was poorly done and doesn't prove a thing.
DENMARK: 211,000 cases vs. U.S. 29,300,000 cases
DENMARK: 2300 deaths vs. U.S. 527,000 deaths
DENMARK: 5 million population vs. U.S. 331 million population
From the above link:
The Times also cited pushback against the study, namely over the low rate of infection in Denmark at the time of the trial and the participants self-reporting, meaning their mask-wearing was not independently verified:
Other experts were unconvinced. The incidence of infections in Denmark was lower than it is today in many places, meaning the effectiveness of masks for wearers may have been harder to detect, they noted.
Participants reported their own test results; mask use was not independently verified, and users may not have worn them correctly.
Just posted the link, have no idea if it is true or not, just like many things you find on the internet or read in the paper, but people believe them anyway.
-
-
51 minutes ago, GlennWest said:
I know your bms are different from mine. Is yours smooth surface where tape goes?
Mine are stacked horizontally, not vertically, so tapped to flat side of cells. If your leads reach, would mount on top or sides of the battery pack.
-
When I changed out one BMS on a battery pack, just used double sided VHB tape.
-
2 hours ago, Barbaraok said:
OK, who said anything about it happening tomorrow? Only thing I have seen in this whole thread is about it can’t happen because we don’t have everything already in place !
Maybe I am reading it differently than you are. Most posters are saying it is inevitable, and are just relating the obstacles that must be overcome before we reach that point. Great to set high expectations,, but the reality for most, is how are you going to put food on the table. Personally I would like to see a carbon free world , but realize I am going have to fill up my truck with fossil fuel for a while before that can happen. I can also sympathize with the workers who will have to sacrifice a good paycheck in the name of progress. And I disagree that everything doesn't have to in place. It will be a transition, but you cannot ban diesel semi's before you develop an electric truck that will fulfil the same duties.
On that note, agree with NamMed, much ado about nothing, it will happen when it happens, last comment from me.
-
3 minutes ago, Barbaraok said:
Did anyone say it will happen all at once?
How does everyone jump from aspirational goals that we works towards to cries about it can't be done tomorrow? Glad JFK didn't listen to the naysayers that said we couldn't put men on the moon because our rockets always blew up. We got better at it! And the benefits of doing that effect EVERY SINGLE ASPECT of our lives today.
Aspirational goals are fine, and we can work toward a true fossil fuel free world, but we must face today's reality. It took time and a lot of blown up rockets before we were successful in going to the moon. It will take time to reach the desired goals, but until we get there, we also need to handle today's problems. No magic bullets here, will take time. No matter how much you want it, it can't be done tomorrow.
-
We import 3.7 million barrels of oil a day from Canada. Of course it will drop in the new all electric America, but we now heat over 60% of our homes with oil or natural gas. Something electricity will not be able to replace for quite a while. Pipelines are over 4.5 times safer than transporting by rail and trucks. The all solar and wind turbine goal is fine, but we will be reliant on natural gas and oil for a long time, Piping in oil from Canada is lot cheaper than importing it in from other oil producing areas.
https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MCRIMUSCA2&f=M
-
31 minutes ago, GlennWest said:
Welders are not needed for solar.
Yup, you will have to trade in your stinger and torch, and buy a couple of 3/8" wrenches to bolt the panels together, and of course, cut your income in half.😅😅
-
6 minutes ago, Barbaraok said:
And who said we weren't going to do that? Where did everyone get the idea that everything was going to change overnight? Coal is being phased out now, and other changes will come along as research progresses. Upgrading the infrastructure is what is being discussed now because it has been put off for decades and is literally falling apart.
Think you missed the point, why not use the revenue supplied by selling and taxing fossil fuel now, to build the infrastructure. Can't see cancelling the pipeline and stopping new fracking on public lands helps. Where does all the money come from to build this new infrastructure, and build and install solar panels come from? Fine to get rid of Fossil fuels and pollution, but why don't we use it to fund the $2T bill to get to the point where we don't need fossil fuel anymore.
-
Glen, there will be millions of high paying union jobs installing solar panels.🙄🙄
And if you believe that, I have a bridge I can sell you cheap.
-
How about instead of jumping off the ship and hoping we can swim to shore, we take the fossil fuels and income from them now, and invest in the infrastructure that will make the transition to green and all electric seamless? You can still make the deadline 2035, but we would be better prepared for it. Just saying we are going "green" and quashing the energy we have now, is not going to make it happen.
-
44 minutes ago, RandyA said:
No, I wasn't born yet when the Wright brothers were at Kitty Hawk. I also wasn't around when Henry Ford made the Model T. But, I did grow up in Oak Ridge, TN in the shadow of the US Atomic Energy Commission, K-25, Y-12 and X-10 where many good ideas for future nuclear power generation were conceived. My father was an engineer for "The Manhattan Project" - a top secret seemingly impossible goal. But we had a plan and money not to mention a dire need to develop nuclear capabilities.
It appears to me that you did not fully understand what was in my post, or the underlying implications. The old saying "a chain is only as strong as its weakest link" rings true in this all-electric car plan. BTW, I did point out that technology would have to change tremendously to meet this lofty goal - along with public opinion against the systems needed to deliver the required power. I only brought out some of the barriers that would need to be overcome to make it work - there are many more than I cited. Not an insurmountable goal, but one that will take more than what is on the surface. Not to toot my horn, but electricity, electronics, power generation and distribution were the focus of my lifelong career. Vision has always been one of my more appreciated strong points. My doing the seemingly impossible was commonplace knowledge among my peers. I was (and remain) a strong advocate of strategic and realistic planning. I finished up my career as a respected professor that taught Electrical Engineering at the University Level. While I probably won't be alive to see this transition to zero carbon emission come to fruition, for the sake of my grandchildren and the damaging atmospheric changes to our planet from carbon emissions, I pray it will be fulfilled. As far as the problems with our power grid, which still depend upon inefficient inductive transformers, sub-stations and mechanical (analog) switching networks that are susceptible to solar flares and terrorist intervention, it will take many trillions of dollars to bring it up to par for this new generation of electric vehicles - a band-aid approach will only work in the short term. A total rebuild of the grid will become necessary. We need to do the same to our highways, bridges, dams, waste water systems as well as other infrastructure systems at the same time. We can add to this the concept that the Green New Deal advocates upgrading the energy efficiency of every home and building in the US to make them more energy efficient - a noble goal, but how and who pays for it and where is the workable plan? I'm not against electric cars and near zero carbon elimination, I only question how to fulfill the plans for how to implement them. It seems to me that the media has convinced a short sighted public that we can have a bucket of KFC before we even have the egg. Too many people see it as simply plug and play within our existing infrastructure. The prevailing mindset is to put a solar panel on your roof or a wind generator on a pole and bingo - you are there. A plan of implementation with the needed funding has yet to be developed. This is what leaves me scratching my head every time I hear or read about "the all electric car" scenario. Electric cars may be attractively economical now with tax credits and avoidance of soaring fuel taxes, new battery and electric motor technology, along with moving the source of carbon pollution to a more distant location (out of our cities) - but that simply cannot last as the numbers rise. GM is a profit motivated corporation. They could care less about jobs. If the public and government want electric cars they will not be left behind as stocks and profitability rise for other manufacturers of electric vehicles. "Maybe" doesn't make it happen. Its "damn the torpedoes, full speed ahead" - that is until you hit a torpedo.
Well said, Randy
-
NIO can do a swappable battery pack because all their cars are basically the same design. If you look at all the other EV's around, you will find sedans, SUV's, pickups, etc.This will make a one size fits all battery, difficult to design. As far as I know, Tesla has the only proprietary charging system in the US. All other EV charging systems can be used by any EV, including Tesla with the proper adapter. More and more level 3 [fast charging] stations are being added every year. There are almost 80000 charging outlets is the US now.
https://afdc.energy.gov/fuels/electricity_locations.html#/find/nearest?fuel=ELEC is a .
-
37 minutes ago, GlennWest said:
I don't believe many of us will be around long enough to care.
Had my Tesla for 2 years, hope to drive it for at least another 10 years anyway.
-
41 minutes ago, GlennWest said:
Waiting on charging I don't believe will be accepted widespread. I could be wrong. We live in a very fast paced world. A car could be designed for simple battery removal. Most equipment is this way now. Only logical we will continue in this way
Tesla V3 superchargers will recharge 400 miles in 1/2 hour, enough time to get a coffee and take a little break. Every electric car has a different sized and designed battery pack, so standard battery swapping out is not practical at this time.
https://www.teslarati.com/tesla-model-s-refresh-supercharger-v3-speed/
-
Tesla produced its first full production car in 2012, the Model S. The same year, they started their supercharger, fast charging network. Today there are over 20000 stations worldwide.
https://www.finder.com/tesla-superchargers-map
Level 3 [ DC fast charge] stations for all other EV's in the US now are less than 200. Fast charging will allow other EV's to be travel long distances and charge in less than an hour. The dc fast charging network will have to be built up before non Tesla EV's become completely practical.
-
3 hours ago, GlennWest said:
But doesn't natural gas come from oil? I helped build several natural gas power plants. Two just in Virginia.
Actually most comes from fracking and horizontal drilling. We produce all we need, but this could change in the near future.
https://www.eia.gov/energyexplained/natural-gas/where-our-natural-gas-comes-from.php
-
27 minutes ago, pjstough said:
That is unfortunate, mail should never be left on the porch. If the mailbox is full, the carrier should take all the mail back to the post office and handle in the appropriate manner.
One would think so. I have since removed the mailbox, and cut and installed a mail slot in my front door, so it won't pile up on the porch when they forget about my hold request.
solar panel voc
in Technical Tips and Tricks
Posted · Edited by jcussen
I am running 2 strings of six 90 cell panels [45 volt] in series at 270 VMP, through two 250 volt solar controllers. Have seen controllers shut down a couple of times in the morning when voltage was 250+ volts, but they started charging again when voltage went below 250 volts. I run 8 gauge from each string.