Now the more you optimize, the closer you get to the boundaries of what the materials can handle. You squeeze out all the buffers, all the extra's. And quite likely, all these buffers made the device last longer but at the cost of running inefficient. So the fridge that the OP talks about - the one running for 50 years - will have used much more electricity than the ones you could have replaced it with. Likely, the lower energy consumption of the device will have paid back the investment in 7 years.
This will be an Issue that will be highlighted very soon. We'll see a huge devaluation in secondhand Tesla cars, since replacing the battery will be more expensive than replacing an engine in a car (I believe), plus it'll have to be done every ten years - while a car can keep the same engine for decades, especially when some of the wearables like timing belts and seals and such are replaced.
I hope Tesla will recognise this too and do something about it - battery replacement programs, preferably where they can replace batteries with higher-capacity ones as time goes by.
I don't see how owning a car in full can work for electric cars, not when the battery needs to be replaced every ten years. I don't know what the lifespan of the drive unit is either.
Is that bad?
I'm particularly concerned about the potential environmental impact of dumping a bunch of batteries into landfills. Is there a battery reburishment/recycling program for these vehicles?
[1] https://electrek.co/2016/06/06/tesla-model-s-battery-pack-da...
AFAICT in "practical" mechanical engineering tribology:
https://en.wikipedia.org/wiki/Tribology
is one of the fields that made the most progresses in the 90's, thanks also to the introduction on the market of totally or partially sinthetic oil, that literally changed the game when it comes to car engines duration.
The (huge) difference in spark plug life depends more on electronic ignition, of course and that also became mainstream in late 80's and 90's.
When it comes to water pumps, allow me to disagree, however, once upon a time if a water pump leaked you just changed gaskets and maybe the ball bearings, since around the same time you are often forced to buy a new "whole" pump as they are not any more serviceable.
As far as water pumps go, I've noticed that they often have alloy impellers now, and used to have stamped steel ones. I've heard of people rebuilding water pumps themselves (as opposed to buying a remanufactured unit), but never seen that done except in special cases (large stationary engine, rare obsolete engine).
However, it is also clear that e.g. control electronics is simply not made to last. E.g. they use the cheapest of electrolytic capacitors, which will leak and break in 5-10 years. Using proper ones might cost 1-2 cents more per device.
This also means that old dead TVs and stuff may often be repaired quite inexpensively - buy a 0.20$ capacitor and solder it in place - but it is still a frustrating thing that it breaks in the first place.
With cars I'd still say that despite the added complexity, the endurance of vehicles is simply amazing. We deplore that when the engine control unit fails, we have to replace the entire unit. But overall, you need much less maintenance on modern cars than you needed 30-40 years ago. Oil change intervals have gone from 5 000 - 10 000 km to 15 000 - 25 000 km. And 30 years ago, a car that had 200 000 km on the clock was really really worn out. Nowadays, it may work like it were almost new.
And then I remember my dad telling me that if you bought a new car in the 70s, if it wasn't a Merc, the best thing you could possibly do was to take it into a garage and get all hoses checked, bearings greased, nuts tightened, and then maybe you would have a trouble-free car for a year or two.
1. More parts to break--sooner end of life. I agree. Finding that bad capacitor is not easy. First it's hard to find a bad cap to begin with. The repair shops, if your electronic device is under warranty; just replaces the entire control board. It's usually never in stock, and it always seems to take a month or two comming from China.
For the DIY'ers, there's no schematics to be found, and even then it's still very hard to find that faulty capacitor on one of the boards.
End result--the electronic item is thrown out.
I don't know how this is tolerated--on a lot of levels. It's bad for the environment, and just wasteful. T.V sets used to be repairable. It dose bother me. Hell--we used to get a few channels over the air for free. Sometimes--I feel gone backwards?
"With cars I'd still say that despite the added complexity, the endurance of vehicles is simply amazing. We deplore that when the engine control unit fails, we have to replace the entire unit. But overall, you need much less maintenance on modern cars than you needed 30-40 years ago. Oil change intervals have gone from 5 000 - 10 000 km to 15 000 - 25 000 km. And 30 years ago, a car that had 200 000 km on the clock was really really worn out. Nowadays, it may work like it were almost new."
1. Agree. A vechicle with 125,000 miles is not much. (I think my conversion is right?). Rebuilding that modern engine is a lot more difficult than rebuilding a Chevy 350 though. I know Toyota dealership mechanics who can't repair the Prius gas assist engine. They usually just pull a used engine from the scrap yard. I will give Toyota credit on a well designed engine, but working on it is another story.
2. Oil changes--yea I'll give you that one, but honestly, I always felt certain industries pulled those oils change numbers out of the air. I've always changed my own fluids, so that was never an expense.
3. The problem with modern vechicles is that automatic transmission--still. At around 135,000 those sensors, those plates, that OD unit just start to wear out. If it's just a pressures sensor, that's fine, but when it's the Over Drive unit, or the transmission needs a rebuild; that's where the anger sets in. A modern automatic transmission rebuild is not an easy task.
4. The plethora of sensors. I get it. They are needed for emmissions, and performance. And I get a computer. I don't get three computers, and systems so complicated dealership mechanics are learning of the customers dime. I just gave up on an older Dodge that would run at idle. I checked everything. It was a '98 so it wasen't nearly as complicated as todays vechicles. I had to bring it to the dealership, and reflashed reflashed the computer three times for a grand total of $1200. Let me rephrase that, they replaced a bunch of "suspected lazy sensors" before the three reflashes. No it wasen't my vechicle, but a family members who wanted her old truck. I don't usually ever bring a vechicle to a dealership.
4. I do forsee a generation of vechicles that will be scrapped because it makes no sence to fix them. That saddens me. Every time I see a new car commercial, and I see nothing but a electronic light show on the dash, heated seats, automatic cup holders, automatic everything, and I haven't even got to driver assist electronics; I get sad. They all look great, until something malfunctions. I guess this is what the consumer wants in a vehicle. I don't. As my deceased father used to say, "The day I can't roll down my window, put me out. And it's just something else that might break down. I want simplicity."
5. Just thinking about my Bosch washing machine that rings, but doesn't clean the clothes is making my headache worse. Just thinking about the two Mielde vaccume cleaners that are sitting in my garage with perfect motors, but bad blue tooth boards is making me thirsty, but I have no alcohol.
Why would they ever decide to replace a simple switch, and put in a blue tooth board in the handle? Good night people. I need to set up a small distillery in my room.
I don't think OD units are a thing on modern cars anymore. That higher top gear is just going to be another gear inside the transmission. Indeed, on FWD cars with a transaxle, there's really no alternative because it's all a single unit.
This is why people sometimes describe hard drives as "spinning rust".
I agree with you on the first paragraph.
I would be willing to bet, however, that net the energy cost of assembling, shipping, running, and ultimately discarding 3 or 4 "energy efficient" appliances is greater than the energy cost of owning one the more reliable older "less energy efficient" models over the same time frame.
No. It's designed to fail as the article shows. Many components are like this by implication where they're designed for everything but quality and longevity. Things that reduce those two. There could be some extra effect on the two traits due to energy efficiency. The overall problem is there by design. It's also very profitable. ;)
