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How A Brick & Rock Battery Is Changing Energy Storage

spawnflagger says...

yeah, since efficiency is usually a measure of how much energy is lost to heat, should be 0% vs 100%... but, marketing.

I also doubt they are using aerogel or cryostats insulation to surround hot bricks. (or maybe that's why 1 container costs $9M?)

Matt (and team) from Undecided almost never approach their videos with a critical eye. Many startups' claims can be debunked with high school physics, but they just present everything as-is and with good production value. I consider their channel more entertainment than education, but still interesting to see some of the ideas out there.

newtboy said:

Ok. I like the concept….thermal mass as short term heat storage/release is a well established science.

Sadly calling bullshit when they claim converting electricity to heat is 100% efficient. Nothing is 100% efficient.
They also claim 98% efficiency “pulling the heat back out”…unbelievably high.
Noticeably missing were heat loss rates, both for capture and storage over time…both expected to be extremely high at temperatures of 1500C.

The second system boasting 80% efficiency (but why burning wood?) is more realistic, but the only 3% heat loss per day at 500C temperatures claim is not. No insulation I’ve ever heard of is that efficient.

Recycling industrial manufacturing heat seems smart, but I think they need to be honest up front about the real world expectations and uses. If it could cut the energy needed to bake limestone or melt steel in half, that’s great…please don’t imply it could cut it by anything approaching 97%. That makes me not trust it at all.

bobknight33 (Member Profile)

newtboy says...

Ruh-roe. Hope you didn’t go all in on the “anti-woke” bank Nick Ayres and Loughler started….because despite having no location, no employees, and no expenses, they’ve blown through their millions of startup money and have extremely few account holders….account holders who are probably losing their deposits.
Another Righty fraud designed to steal your money. Odd how you seem to love those who constantly rip you off so much.

Job training failure at Alaskan Salmon Cannery

spawnflagger says...

There's a few startups in South Korea working on this now, with promising results. Apparently the regulations in the US make it very difficult to do that kind of startup.

makach said:

I'll be first in line the moment we figure out how to grow proteins and carbs in laboratories.

Why GM Says Its Ultium Batteries Will Lead To EV Dominance

spawnflagger says...

I think Tesla does some innovative stuff - like using the worlds largest metallic moulds (built by some Italian company if I recall, which make those exclusively for Tesla). But ultimately Elon is a "hype man", and most of his promises have fallen flat (check out Thunderf00t's youtube channel - he debunks many scammy startups as well as Elon's claims, using high school chemistry and physics).

I do applaud Tesla for opening additional factories in Germany and China so quickly, but exponential growth (for any EV maker) is impossible - there's simply not enough easy-to-mine lithium in the world. (Maybe Elon is planning to mine some asteroids instead of going to Mars? who knows)

The GM battery tech isn't exciting or sexy, but it is a means to building a more affordable EV. Ford is already shipping F-150 Lightning (assuming its not affected by the same contactor recall as the Mach-E). Rivian has been (slowly) shipping trucks.
Where's the CyberTruck? I bet even the electric Silverado will start shipping before the CyberTruck.

White supremacist Kenosha County Sheriff david beth

BSR says...

Well, let me just say I hope the offer for your startup pans out for you at some point. Sounds exciting.

But, as it seems you might be stuck here, maybe you can still add your voice to help clean this "shithole" up. After all, Trump is only helping the cancer grow and in this country there are tons of good people that can stop this corruption in it's tracks and I think you are one of them. I don't know what your status is or if you can vote here but, for the most part I think you would enjoy being a part of bringing this creeping cancer of corruption down even if you're only one voice in the choir. One day you will be able to say you helped clean up America. Don't let defeat be an option.

Again, good luck with your startup.

StukaFox said:

Naw, previous to the fucking idiot at 1600 completely botching the Covid response and turning America into the laughingstock of the world, a US passport would have gotten me to Lyon, France, where I had a job waiting. Thank fuck Estonia wants my start-up in their country, which at least offers me a way into the EU and away from this unspeakable shithole.

Michelin Introduce Puncture Proof Airless Tire

bremnet says...

Yes, yes and no so much anymore. The delamination / damage from bumps and potholes have been pretty much resolved in the Michelin and Bridgestone designs (according to Michelin and Bridgestone - ahem...) Haven't seen any reports on whether running temps are worse lately, but hard to make the comparison (the #1 root cause of tire failure today is under-inflation so tires running hotter than design). Now with 10 or more of the big boys in the hunt for the best airless design, will be an interesting ride. The concept out of SciTech Industries in Florida is neato, but they are a (relatively) smaller startup, so might get lost in the scramble, though producing a lighter tire with less heat build (quite a different concept compared to Michelin). cheers

SFOGuy said:

Nice. I think, from what I recall, the engineering challenges are heat build up, weight (more than a regular tire), and bump absorption.

Vicious Dog Pack Attack

Boyfriend makes car commercial for his girlfriends 96 Civic

Review Shut Down an Entire Company - KANOA Review

Tabs v(ersu)s Spaces from Silicon Valley S3E6

MilkmanDan says...

I understand where you're coming from, but I stand by my previous posts.

Full disclosure, I never got professionally employed as a programmer / coder / software engineer. However, my Bachelors Degree was in CS, and I have many friends working in the field.

In the show Silicon Valley, Richard Hendriks is working for a large corporate entity but has an idea / personal project that he ends up spinning into a new company. He is trained as a software engineer (CS), NOT with any business or management background (MIS), yet he becomes sort of the de-facto boss / CEO (at least early in the show). He hires a small team to help him develop his product.

Given that scenario, I think the show portrays things very accurately or at least completely plausibly. He's a coder, not a manager. Programmers may understand the importance of formatting and style standards, but at least tend to not have the correct personality type to be comfortable with formally dictating those standards to a team (an activity which would generally be more in line with an MIS background).

Also, his company is small -- just a few other programmers. They are all specializing on different components of the product. So they generally aren't working on each other's code. Standards for function arguments / helper functions / etc. would have to be agreed upon to get their individual components to interact, but that is a separate issue from tabs vs spaces. It would be wise to set a style and naming convention standard and have everyone conform to it, I agree completely. But Richard isn't built for the manager / CEO position, so he either fails to recognize that or doesn't feel comfortable dictating standards to his team.

One more thing to consider is that he (Richard) essentially is the product. He's the keystone piece, the central figure. He's John Carmack, Linus Torvalds, or Steve Wozniak. Even in a very large team / corporate environment, I'd wager that more often than not the style standards that end up getting set tend to fall in line with whatever those key guys want them to be. Don't touch an id Software graphics engine without conforming to Carmack's way, or the Linux kernel without conforming to Torvald's standards. Especially if they are building something new from scratch -- which is again true in the Silicon Valley show scenario.

The show isn't a documentary on how to properly run a startup company in the real Silicon Valley, but it is generally accurate enough that it has a lot of nuances that people with a programming background can pick up on and be entertained by (even people that don't actually work professionally in the field like me). And more important, the general feel of the show can be entertaining even for people that know absolutely nothing about programming.

Buttle said:

I have to disagree with this. If you're working with even a team of two, you have to edit someone else's source code, and tabs v spaces has to be agreed upon. There are a lot of other, more entertaining questions of formatting that have to be settled upon, not to mention how to name things: CamelCase versus under_scores.

Any halfway competent programmer figures out the local standards by observation and follows them. Anything else is an indication that she just doesn't give a shit about getting along with co-developers.

Terry Crews explains why he decided to build his own PC

LukinStone says...

That's the worst time, the inevitable second act dilemma, of PC building.

You can budget in the expectation of how long it takes to do the housekeeping stuff. Loading the OS, essential programs, personal preferences - the games themselves...but there's often that one random thing.

I built a nice medium-range game PC with someone else recently, my building partner was so excited. It's amazing how much of a bond that creates between people, or how it can strengthen a relationship. Not just for building PC's specifically, but for sharing something and having that moment of realization of how cool that thing shared really is.

I felt more pissed off than anything for a brief moment during the boot up, when the display seemed to shutdown startup before anything really happened. Luckily, I'd paid attention enough when researching the GPU and eventually remembered someone mentioning there was a button on the card itself that controls the LED lights on it, pressing it seemed to clear whatever was blocking the startup processes for the card.

There was definitely a soul-crushing few hours of doubt and agony before I remembered that detail. During that time, I stared at the clean interior of the fully assembled build, having had a hard enough time getting the cords to fit and wondering if something minor and imperceptible had wiggled loose, wondering if I would go mad.

Having someone else depending on the solution was another intense emotion heightening element. I'd done my best to prime for this likelihood. I'd shared stories of problems I'd had on previous builds, the random thing that went wrong. I stressed the fact that the computer had always, eventually, got built.

It's a good, stinging bit of humility for me. Even when I try to minimize problems and anticipate potential issues, I'll still miss something as obvious as a big button right in front of my face.

Phreezdryd said:

I can't help but wonder about how much fun was had in the unmentioned time between pressing the power button, and actually being able to play games.

Mordhaus (Member Profile)

Hi Stranger

Freevalve Camless Engine

eric3579 (Member Profile)

radx says...

Have I mentioned how much I like reading pieces by Thomas Frank?

He had a piece in the Guardian two days ago about the Podesta emails and it's just brilliant. Excerpt:

This genre of Podesta email, in which people try to arrange jobs for themselves or their kids, points us toward the most fundamental thing we know about the people at the top of this class: their loyalty to one another and the way it overrides everything else. Of course Hillary Clinton staffed her state department with investment bankers and then did speaking engagements for investment banks as soon as she was done at the state department. Of course she appears to think that any kind of bank reform should “come from the industry itself”. And of course no elite bankers were ever prosecuted by the Obama administration. Read these emails and you understand, with a start, that the people at the top tier of American life all know each other. They are all engaged in promoting one another’s careers, constantly.

Everything blurs into everything else in this world. The state department, the banks, Silicon Valley, the nonprofits, the “Global CEO Advisory Firm” that appears to have solicited donations for the Clinton Foundation. Executives here go from foundation to government to thinktank to startup. There are honors. Venture capital. Foundation grants. Endowed chairs. Advanced degrees. For them the door revolves. The friends all succeed. They break every boundary.

But the One Big Boundary remains. Yes, it’s all supposed to be a meritocracy. But if you aren’t part of this happy, prosperous in-group – if you don’t have John Podesta’s email address – you’re out.

Yap, as George Carlin used to say: it's a big club, and you ain't in it.



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