Comments by "" (@Green__one) on "Technology Connections"
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I need to disagree with a fair amount of this speaking as a Tesla driver:
I live somewhere where almost every workplace has "level 1 charging" because we get real winter, so most workplaces have block heater outlets in the parking lot. Nobody will use them because it's too inconvenient to lug your cable around instead of just leaving it in your garage, and because it's significantly less efficient than Level 2, and because it adds so little range it's not worth bothering. Additionally, because EVs actively heat or cool their batteries before charging, that conditioning can use up all of the level 1 current available, leaving none for charging when it's really cold or really hot out.
There is no point to any business installing level 1. Nobody will use it. It's not even worth plugging in unless I plan to be there at least 24 hours, probably more, and the weather is decent.
Level 2 charging is appropriate for homes. If you've spent tens of thousands of dollars on a car (or over a hundred thousand!) you can spend a couple hundred to get an outlet in your garage. You'll be thankful you did. Level 2 charging is also appropriate for hotels as you'll be there overnight to charge. Nobody else should waste their time installing level 2. It's useless at a restaurant, or theatre, or grocery store. I'm not at those places long enough for a level 2 charger to give me enough range to matter, and most of the time I'm not far from home anyway, so it's not worth the hassle.
Level 3 charging. Here I'm in complete agreement. I'm surprised no national chain restaurant has announced plans to equip all their highway locations with Level 3 charging. Even if they require payment for charging, it would still be a great draw for EV drivers.
Overall infrastructure: We DO need more infrastructure, but we don't need more Level 1 and 2, we are way over saturated on those (except in apartment buildings where these are legitimate concerns) What we need is Level 3. Talking about the "average" commute is pointless, that's covered from your garage at home. But we can't ignore roadtrips. It may only be a few times a year, but dismissing the need does a real disservice to EV adoption. Level 3 chargers are the only ones that enable long distance driving. Those need to be more common, and so far, they just aren't. Sure Tesla has tried, but their network has a lot of very noticeable holes in it yet, and nobody else is even making an effort.
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As part of a local government program, I had the energy efficiency of my home audited. According to that audit, the design heating load for my home is 11.25 kilowatts, according to the same audit, the output of my existing heating system is 12.5 kW, I'll consider that close enough!
A note about smart thermostats, I'm glad yours provides useful statistics, mine does not. In theory I have the same data you do, however I have found way too many times when the thermostat shows as heating while the furnace is off, or times when the furnace is running, but the thermostat does not show heating. I don't know why mine is so inaccurate, but it is a little frustrating!
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@mmmhorsesteaks The drivers are definitely the weak spot. Wiring has been inspected and certified several times, main entrance cable and panel has been upgraded. Power in my area is known for reliability as generation is close to the end user on a stable grid. The philips bulbs as pictured at the start of this video were really bad and have almost all failed at this point, I also have ceiling fixtures that have non-replacable LED panels, several LED light tubes (replace flourescent tubes) and many other LED bulbs, I have tried ones from pretty much every major brand. I replace a bulb, tube, or integrated fixture a few times a year. The only filament bulb I have left is the one in the oven, and after 12 years I finally had to replace that one this past month. I wish I could get that kind of life from an LED! As it stands, with the cost of LED bulbs, and the ridiculously short lifespans, they are both a financial, and environmental, disaster.
That said, the sucker in me keeps buying them because they're "Supposed" to last so much longer that I should be saving on both purchase price and electricity use. I just wish it were actually true.
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I would like to add one more data point. I just looked at my spare parts bin, and I found 4 different outlets from 4 different brands. in every single case, the writing stamped into the metal tabs at top and bottom of the receptacles, and the writing moulded into the plastic on the rear of the receptacle, all appear right-side up only in a ground down orientation. Writing on the front that would be visible when the outlet is installed is all duplicated in both directions. (i.e. TR at each end of the face-plate, one in each orientation, or GFCI test/reset lettering as shown in the video)
Based on this, I can't see any reason to conclude that the manufacturers believe that the outlets should be installed ground up, in fact the reverse appears to be true.
Contrast this with light switches, and every one of them has "top" stamped into the upper metal tab to indicate orientation.
EDIT: It appears that I was wrong in that the 4 different outlets are actually all from the same brand, Leviton. I also found 3 more models from them as well, all labelled similarly. So maybe it's less universal than I thought. It seems I don't have anything non-Leviton to compare to though.
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This is the first I'd heard of heat pump clothes dryers, neat! A couple points about water heaters though. You state that if you have natural gas heating you'd "indirectly" be heating your water with natural gas. I can't imagine why you'd have natural gas heating, without already having natural gas heating your water. Also, tankless systems are "instant" the same way the water tanks are. That's what they mean, not that they're faster. The efficiency gains come from not storing the hot water, so I'm not convinced that you'd end up more efficient with the hybrid system you talk about being that you're still heating the water the "traditional" way first, and then just using the heat pump to maintain temperature vs just not storing the hot water in the first place.
Really, if you want to look at heat pumps for water heating, most ground source home heating systems I see include both water, and space heating. That's the way to go.
I really love the idea of a heat pump, but the economics are brutal. In my climate I don't need an air conditioner at all, and most of the winter is below where an air source heat pump makes sense. The end result is that the cost of an air source heat pump is hard to offset by the use in the shoulder seasons. As for ground source, that would be great, but until they come up with cheaper installation, that too is a non-starter.
It's a technology I'm watching closely, and I hope to soon be able to go that way, but we're just not there yet economically.
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In terms of revolving doors, they are on their way out. The problems with wheelchairs, walkers, strollers, etc cause enough trouble, and there are more modern solutions to the problem. I've seen a lot of them recently replaced with air curtains on sliding doors. You also mentioned that you hadn't seen airlocks that forced you to wait for one door to close before the other would open. I actually have, at the zoo here, the penguin exhibit used to have revolving doors on each end to keep the cold air inside the exhibit. They have since replaced both revolving doors with proper airlocks where you have to wait for one door to close before the other will open. They hold about 20 people if you stand close together, and there are prominent emergency exit override buttons inside them.
You also said you couldn't think of a reason to have the swing speed faster than the watch speed, I absolutely can. I can foresee lots of reasons why you would want the door to be closed as quick as possible, but also want as soft to touch as possible for noise mitigation. Your hotel is actually a perfect example where you want to close the door quickly for privacy, but you want to avoid slamming the door. So assuming the latch works smoothly, you can have the door move quickly through most of its swing but only slow down at the last moment to avoid the slam at the end.
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My only computer is a Pixelbook. I often use it with my USB-C dock with 2 external monitors, a normal keyboard, mouse, etc. Now I don't do video editing, or similarly intensive stuff. but for coding, watching youtube, general office type tasks, etc, I've never felt lacking. But there's something magical about pulling it off the dock, going and lying on the couch, and still having all the same applications, files, configuration, etc still there, even if on a smaller screen.
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This is what frustrates me so much about north american lights, the original thing was so manufacturers could save a few pennies on an extra wire, bulb, lens, and reflector (Not a good reason in the first place, but at least it was A reason!), but then you see cars like you describe above where they aren't even doing that, so don't have any excuse at all to make their signals dangerous! Worse yet, many of these vehicles are actually sold in overseas markets with different lenses to comply with those laws, but the manufacturer actually makes life harder for themselves by having different parts for the 2 markets, just to intentionally make their north american vehicles more dangerous!
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