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Comment Re:DC power? (Score 1) 191 191

All the HVAC techs I've ever talked to have told me that it's better to have the compressor run continuously than it is to short cycle it.

I had new AC put in about 10 years ago and if cleaning the A coil is something that's supposed to get done, they sure don't do the sheet metal like its something that's supposed to be done.

My A coil failed (I think they used a non-R134a coil) after two years and the guy had to do a lot of sheet metal surgery to get the new coil in.

Comment someone trying to unload lackluster tesla stocks? (Score 1) 460 460

Ridiculous. Yet another "world changing vision" brought to you by an entitled, elitist cadre of the Bay Area who fail to understand that the rest of the world doesn't live like they do.

The opening premise "well, a lot of people adopted smartphones rapidly, so they'll adopt this too" already smells like snake oil: people adopted smartphones because they were BETTER in almost every conceivable way to the previous generation of phones.*
*would they have done so, if one had to charge the phone for 12 minutes for every 1 you talked? I doubt it.

Let me debunk the list of putative "improvements" individually: (I apologize to /. users for the stupid format characters, but /. still doesn't understand pasted quotes/apostrophes.)

"It's more fun to drive, with smooth, transmission-less acceleration. For most of us it is the fastest car we have ever owned."
- Maybe it's more fun to drive. A vanishingly tiny % of people in this world buy cars primarily based on their "fun". Nobody gives a flying hoot about 'transmissionless' acceleration, nor does 'fastest' really matter in a world with speed limits.

"Itâ(TM)s quieter at all times and nearly silent at low speeds."
- I've never once heard someone buying a new car based on how quiet it is. Never. (OK, I *have* heard of motorheads not buying a car because it's not loud enough.) Considering some of the instant off/on tech in the newest cars, they're exactly as quiet as the Magical Tesla while idling, ie silent/off. And aside from older cars which will naturally phase out of the system, the bulk of noise from a highway is tires, not engines.

"It is always âoefullâ every morning one drives it and you never need to go to a gas station."
- Simply, completely, thoroughly wrong. Well, unless you sleep 3 days at a stretch.Further, I don't know about you, but I drive more than once just in the morning.
According to (https://www.cars.com/articles/2013/11/how-quickly-does-the-tesla-model-s-battery-charge/) the nominal charge for a non-special installation (ie a normal outlet) is FIVE MILES PER HOUR OF CHARGE. That's ridiculous - 60 hours to "fill the tank" to the full range, or (roughly) needing to charge 5x the driving duration.
The average commute in the US is 25 minutes. Assuming highway speeds, that's 25 miles. That means to stay 'level' in terms of range, the car will need to charge 5 hours for each leg of the commute. Go to visit a friend in a city 250 miles away? Sorry, we can't go to a movie, my car needs to charge *four hours* for us to get to the cinema and back.

"It has a user interface - including, notably, its navigation system - as superior to that of other cars as the iPhone was to earlier phones."
- I can't really refute iphone-zealotry, that's religion, not fact. It probably does have a better UI than most other firms, as they really made the most of the newest touch-screens and systems (and had no aesthetic legacy to maintain), but this is likely to be adopted relatively soon by other automakers. Nothing particularly special here, except indeed being a little ahead of the likely curve.

"It is connected to the Internet."
Christ. You know that you should really be paying attention to the road, right? 4g works well enough for map updates, which is really all the driver should care about. And personally I find the modern paradigm of everyone sitting in the car watching their own movies, playing their own games, reading their own narcissistic social media addiction reprehensible. We already suffer from an atomized society generally, you're saying it's laudable to encourage this? I have an alternative entertainment that is perfect for trips in the car with your kids or friends: "conversation".

"It continuously gets better with automatic updates and software improvements."
The Tesla is comparable to a fixed-hardware console. Ever bricked your Xbox360? In any case, electronic systems in petro-cars also get better with updates and software. Nothing new there at all.

"Itâ(TM)s more roomy and has a trunk in the front (the âoefrunkâ) AND a spacious back."
Now you're just trying to be silly. Who gives a crap where the trunk is? It has ample storage space, indeed. But then again, so does a minivan. By that logic, minivan sales should be skyrocketing?

"It comes with an app that allows you to manage the car from your phone.
It allows you to drive in the carpool lane and to sign up for a cheaper energy usage plan at home (obviously these incentives wonâ(TM)t last, but they will help get us to the tipping point described below)."
I tend to prefer sitting IN my car when 'managing' it, so the convenience of a smartphone app is moot (how secure is that, by the way?).

Setting all that aside, the Model S is $70,000. The current US new vehicle average purchase price (and let's remember that the US is pretty much the wealthiest country on the planet, ever) is $31k. As Car and Driver noted: "Logging 630 miles and conducting performance tests in this 70D required 14 plug connections versus three or four stops at the pump for the most fuel-thirsty luxury sedan driven the same distance. In exchange for the loss of convenience, you do reap substantial savings in operating costs. We spent less than $30 for the Teslaâ(TM)s electricity versus the $100 in premium gasoline a conventional luxury sedan would have consumed driving 630 miles."
FOURTEEN fill-up stops (they politely didn't mention how long those took) and an average upcharge of $40,000 ....to save $70? Woo.

Not to mention ongoing and - as far as I can see - unanswered concerns about performance, longevity, and resale PARTICULARLY in climates less benign than Palo Alto...ie everywhere. (I LOL'd at Tesla blogs talking about the bitter cold of below-freezing temps. I live in MN where winters routinely hit -40F. Ever try to turn on a flashlight left outside at that temp? Further, Car & Driver noted some troubling cooldown-demand in relatively mild warm conditions while driving aggressively as well.)

The Teslas service such a tiny, boutique market (you know, the 1%), it's hard to understand these bigger-picture items that will come to the fore when the market for them scales up to real numbers. (Tesla's monthly sales are in the 3k units range; real car sales are in the 600k (and light trucks/suvs, etc are around 800k). Tesla might as well be hand-building them for as fast as they're selling.

To suggest from this Pollyanna view that somehow electric cars are going to suddenly take off? Nah, it smells more like someone bought some Tesla stock recently and is hoping to generate enough buzz to unload it without taking a bath.

On it's own merits? It's a decent car, certainly, if you live in a benign climate and idle enough that you can live 'around' its charging-time demands. But no, I don't see consumers DEMANDING this at all.

Comment Re:CPR dates back to the 1700s. (Score 2) 22 22

I'd love to hear how people performed CPR in the 1700s. Did they have a clue what they were doing or were they just beating the Devil out of the man?

Jude was a member of a team of people who worked out compression frequency and breathing and then demonstrated that it worked on humans as an alternative to cutting them open and massaging their heart by hand.

Prior to that, people just blew air into you, then pushed on your chest to push the air out or moved your arms and chest around to get air in and out of your lungs. They didn't even think about trying to get your heart to beat for you, except maybe by accident.

Comment Re:Doubtful (Score 1) 460 460

I'm generally on your side in this argument, but a manual or multi-geared transmission in an ICE is likely to fall short of the performance of a properly tuned electric drive train and control system in a wheel-spin condition. The control feedback will always be more responsive in a situation like this than an average human driver, just as a properly tuned anti-lock breaking system will always beat an average human driver in breaking performance.

Also, any type of fuel you can create for use in a compact, internal combustion engine can be burned with significantly higher efficiency in a multi-stage, regenerative fixed industrial power plant. The efficiency will more than compensate for line and battery/charging losses.

Comment Re:In the US. (Score 1) 460 460

When I went on vacations with my extended family (7 of us), we didn't have a car that would fit all of us and luggage. So we rented a van. Cost me $350 for the week. I saved more than that in gasoline alone by driving a smaller car regularly. I also lived for years without a pickup truck. I borrowed or rented one if I really needed it. It's not that hard here; it might be a different story in Europe.

Comment Re:Electric is Evolution. Driverless is Revolution (Score 2) 460 460

The difference is that a gallon of gasoline really isn't getting you much further these days than, say, 40 years ago at the efficient end of the scale whereas batteries have seen quite a large increase in energy density and overall vehicular efficiency in the same time frame and have a good deal of room left to grow.

For most drivers, and electric car in 10 years will be ideal - though there will still be outliers. Saying that electric cars are bad for most people is like saying that wireless cell coverage is bad in most of the US. That may be technically true (even the best network has far less than 50% of the landmass covered), but in a practical sense most of the population has coverage. Similarly most of the miles driven may still be ICE, but the majority of people will be fine with an electric car.

Comment Re:A much more efficient air conditioner, too? (Score 1) 191 191

It'd be interesting to know what Sharp plans for the power input. I would suspect the market starts to shrink dramatically for input voltages over 48V because pretty much all battery arrays are 48V or lower and AFAIK (which isn't very far) only the newest solar installs run at high DC voltages.

I'd guess that this would be a 24-48V system (highest common DC voltage in battery arrays) and lets say you have 6 hours runtime after dark (pure battery load), you're burning 4000 watt hours of power or 80+ amps @ 48V and 160+ amps at 24v.

The daily use PowerWall is only 7kw and I'd guess a summer of that kind of use would put a serious dent in its lifespan.

The only thing I can think of is that the Sharp DC A/C is designed for sucking direct from larger solar panel installs during the sunny days and really isn't practical to use for night cooling without some kind of other prime energy source (generator, grid, etc).

Comment Re:We're much more progressive in the states (Score 1) 148 148

... shutting off education in Wisconsin.

I'd say that this would show up as a noticeable reduction in the dumbing down of Americans but, let's face it, the bar is pretty close to zero already so there's not much down-side movement left to go.

Comment Judge, Jury, Executioner (Score 1) 1114 1114

In the redneck form of government, you take the law into your own hands for even the most petty of offenses. There's no need for lawyers, cops, judges or any of the like. See two men holding hands? Beat the fuck out of them. That will let them know that gay marriage isn't allowed - if you see them together again, you kill one of them and the marriage problem is solved. Don't like black people? Burn a cross on their front lawn as a warning sign if you're one of those "soft" rednecks, but the proper punishment for having dark skin is hanging. Neighbors dog is barking in the middle of the night. A couple of rounds from your .30-06 will shut that mutherfucker up and let you get a good night's sleep.

It's so much easier and safer when we all have guns and are willing to use them to solve any dispute. Just ask the NRA - they'll concur.

Comment Re:Stay in school, don't do dope (Score 1) 1114 1114

Your peeping Tom might be violating a law, it depends on the state.

You may be the subject of a civil suit if Tom wasn't breaking the law, and you'll probably lose on the merits. (you did willfully damage someone else's property).

Now, if you were to fire a weapon containing ball bearings and the area downrange of your weapon was not known to be free of all persons; or if your municipality specifically forbids firing a weapon* within the municipal limits, then you are violating the law.

*self-defense in the presence of a bodily threat does not make it legal, but it is a valid and positive defense to such an action.

Note: in a civil society with laws when your rights are violated and except in the case of an emergency related to bodily harm or death you are required to report the violation and a court determines the responsible and/or injured party. In an uncivil society, you simply kill / maim /destroy those things which you don't like to don't approve of. This is not Lord of the Flies nor are you the judge, jury and executioner in all disputes with your neighbors.

Comment Re:A much more efficient air conditioner, too? (Score 1) 191 191

The good news is that, potentially, this would be tied to a large PV battery bank. He who shall not be named's battery packs are Li-ion at 400V which, if run directly, would be just over an amp and a half (about 25% of the basic battery pack's continuous delivery capacity). I agree it's not going to make a whole house system work, though. I don't do the hardcore side of ME, so I don't know what separates the typical residential 2.5-3.0 CoP of a whole house unit from the mini-splits that seem to get closer to 4.0 and can suck heat out of colder sinks. The mitsubishi in my home office is a beast, pumping out hot air even when it's 10-15F outside and the main system is hitting the resistance coil backup heat.

FWIW, AC systems for cars are actually pretty demanding - a typical system for a full sized sedan is ~20kBTU. Then again, you have mechanical compressor power to spare.

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