A typical low flow toilet flushes about 1.6 to 1.8gal these days. Normal shower heads flow at about 2gpm.
1.6/2 = 0.8min, * 60sec/min = 48 seconds
Assuming that you are not effectively washing yourself while ijln the middle of waffle stomping. As long as you can waffle stomp in less than 48 seconds, it is a net gain for water usage.
Yeah… they call it that cuz the same principle applies to vehicle engine cooling.
Air cooling is not as effective as water cooling, but just take a look at beetle engines made more than half a century ago, they’re all air cooled and still up and running. It’s all in the design, if it’s good and overengineered, it will pracatically run forever.
Too bad nothing nowadays is meant to run more than 5 years.
Too bad nothing nowadays is meant to run more than 5 years.
Where do people keep getting this from? Cars today tend to last far longer anywhere where winter is a thing.
As for air cooled vs water cooled engines, the power output (and vehicle mass) has to be part of that conversation. Yes air cooling works on on a 25 HP motor, but it doesn’t work so well on modern engines making an order of magnitude more power.
Honestly people give old vehicles (or old anything) way too much credit. It’s survivor bias, only the good stuff lasted this long. The shitty products have all been recycled multiple times by now. I mean think about it, 100,000 miles used to be an old-ass car back in the day, but for anything post 1990 or so that’s just getting started. Don’t get me wrong, I admire the simplicity and repairability of old vehicles
Air cooling is a lot less complex than water cooling, so there are fewer points of failure. If both can do the job, I’ll pick reliability over efficiency every time.
Similarly it’s actually easier to fuck up the design of a water cooler than an air cooling system. Notably motherboard warp can happen from an improperly set up water cooling.
Cars built today will outlast most of the old Beetles. There is a big survivorship bias at work. A percentage of them were built to slightly tighter tolerances and quality than all the others off the same line. A percentage of those will end up in the hands of owners that are meticulous about maintenance, never get in a major accident, and keep it going for decades. The handful you see left are the ones that went through several rounds of small percentage chances. There were a bajillion of those old Beetles made, so a few were bound to get through.
What cars have problems with today are things that rarely have to do with making the wheels go. They get into accidents. Their auto-dimming back windows no longer work. The GPS doesn’t get updates and thinks you’re three counties away. The engine and transmission, however, will probably go to the junkyard in perfect working order, even with shitty maintenance on the part of the owner.
Two problems with the drivelines of modern cars: sensors, which can cause some pretty spectacular mechanical failures; and cost-cutting engineering. Trimming parts to use less material and that kind of thing, but also less investment in QC (looking at you, Kia engine recalls).
There’s truly more to go wrong in modern cars, and the electronics can fail and cause mechanical failures, too, especially in the combustion cycle.
The fact remains that most cars today will go to the junkyard with perfectly good engines and transmissions. Those sensors tend to kill themselves before killing other parts of the car, and then you just replace them.
I beg to differ, I was an owner of a Renault Megane which had a screwed up onboard computer that somehow managed to mangle 3 timing belts and a cylinder head. I spent more reparing it than the ammount I spent to buy the car… all because of a screwed up onboard computer.
And not one mechanic listened to me, I told them the computer was acting up, throwing errors left and right, then silence for a month, then errors again, they said it’s the sensors 😤… I mean, come on, all of the sensors acting up at the same time, then they go in deep sleep for a month, then the same shit again… excuse me, but you’re either dumb or just wanna squeeze money out of me.
If you genuinely think that those old engines are still running on original parts. Then I don’t know what to say, because you wouldn’t understand any of it.
they had a tendency to overheat in hot conditions, and when stuck in traffic. this is because they need a certain amount of air flowing in order to cool properly.
they also weren't very good for heat in the winter.
air cooling is a simpler system, and as such has less to go wrong with it. that doesn't make it better or worse. there are pros and cons to both systems.
VW and Porsche engines area really oil cooled. They have oil cooling radiators inside fan shrouds with thermal expansion baffles that open when it gets hot and close to prevent overcooling in winter.
They didn’t really overheat very often of all the shroud and engine compartment seals were in place and the baffles were in good working order.
The reason you can often go start up an ancient air cooled engine is mainly that they don’t have any water pumps (and water) to sit in them and rust up. That any that there’s no crazy fuel injectors or fancy electrical systems to fail. Just a Carb and distributor to clean/adjust.
It’s not that simple because air cooling in pcs today means a heatpipe. A heatpipe uses fluid (such as water under a vacuum) that boils at a low temperature. The phase transition of liquid to vapor transfers hundreds of more times heat than simple conduction of cold water running over the CPU.
It’s how refrigerator compressors work to cool things so effectively. The genius of a heat pipe is it works without an electric compressor ( this limits it’s cooling ability but it’s still genius).
So a heatpipe CPU air cooler with a 120mm radiator will outperform a water-cooler with a 120mm radiator in almost every situation. The advantage of water-cooling is you can make that radiator huge (280mm is typical today), and place it on one of the side/top panels of the case where air is cool instead of deep inside where the air is hot.
I actually believe that this is one thing that Trump/Republicans saved us from. In the very first week of lockdowns I remember a few news stories of police really overstepping by pulling people over and demanding to know that they were doing outside. It didn't last long because the economy obviously comes first over lives. It could have really devolved into extreme facism.
The cops are fascists because they’re also mostly Republicans. Trump is a fascist. You’re saying the fascists saved us from extreme fascism? I’m confused lol
I’m on lemmy for a while now and this is the most American centric comment I have seen so far. There are authoritarian governments that used the pandemic to do shit but all stopped sooner or later. And many governments, left or right or what ever, overreacted at the start.
grasping the implication here is an extreme challenge. what are you suggesting? that individual cops were trying to go full-fascist and control the population by using the guise of a global pandemic to illegally stop and question citizens? if it wasn’t the government currently in power, then who was trying to go full-fascist? what entity between the government and police was it? and why was this only an american symptom when the pandemic was global?
all that to say - this take is complete nonsense and clearly lacks the application of the most basic of critical thought.
I’m excited for the day when a generation is born whom is domed to fail at continuing the survival of the human race.
The last generation of humans, all because the majority kept either foisting it’s problems onto future generations that will never come, or thought exactly like this.
Nothing was done, and humanity ended. Not with a bang, but more like a sigh.
Gg everyone. We both won and lost. We defeated ourselves.
I can’t turn on the sound while I’m at work so maybe it explains it…but doesn’t the idea of adding water to the towel to expand it defeat the purpose of a towel? Like if I’m wiping up a spill, a soaking wet rag isn’t going to be super helpful. I guess it depends what you want to use it for. Maybe I’m just caught up on the world “towel” when it’s really more like an expandable wet wipe. Idk.
I think the key is to use a few drops of water or use the water you’re soaking up to activate it. Like if you took a solar shower while backpacking and wanted to dry off it would activate when you started wiping yourself dry with it which would make it easier to towel with which would increase the rate at which it activates in a positive feedback loop.
If you only consider the context of the demonstration it sucks but if you consider you might have a pot/pan that has some water on it still that you’d like to dry off before putting it into your pack it would activate from that water too right? If anything the fact that they’re so thoroughly dehydrated probably means they can pick up more water than another towel of similar size and weight.
I’m just talking here but wouldn’t you take in and take out everything when you go camping? What do you do with these towels now that they’re big after being used? If you carry them back then wouldn’t it just defeat the purpose of having a pill towel when you could just carry a regular small one?
Usually you’d have a bag for garbage that you can put it in. It mainly saves space to start with in your pack. You have other supplies like food and water which will be used up over the course of the hike, providing more space on the way back that wouldn’t be there at the start, so the towels expanding after use isn’t as much of a problem.
Less weight and saves space. Note how in the post image it mentions they’re good for hiking, weight and space are a big thing when packing for hiking. They expand after use yeah, but you might not use all of them. So you have them just in case but still generally save space.
Is it really less weight though? If you have to carry in the towels and carry in the water, then combine them, isn’t that the same as carrying them already combined? Same thing with space. You’re compressing the towel but you still have to carry in the water.
You already have to take water anyways even if you take regular wet wipes, and you should already be taking some extra water just in case. You don’t need as much water for these towels as wet wipes use, and in a lot of cases you can use water from the environment (like a river/stream/lake/rain/etc) so long as you’re not ingesting it or putting it on wounds, say if you’re using it to keep cool or clean yourself. You can also use excess water from what you already use for other stuff like if you’re washing dishes or washing your hands and so on. So you don’t really have to take more water than you would have anyway. Some hiking trails provide occasional stations with potable water as well, at least where I live, particularly if they’re near/around a campground.
If there’s water available you don’t have to carry it in. Treatment tablets and filters are lighter than water, and let you make potable water as you need it.
If you used it to wipe up a spill you wouldn’t have to wet it first, just throw it on the spill and it’ll soak up the liquid, then when it starts expanding from that you can use it to wipe more thoroughly.
I bring these around during travel because sometimes restrooms don’t have towels and I don’t want to touch the wet handle to get out. Pretty niche and I only go through a few a year but it’s better than wet public restroom door handles
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