Comments by "Alan hat" (@alanhat5252) on "Engineering with Rosie" channel.

  1. Do MOV suppressors take the loading of a nearby strike? They look quite flimsy. I've never had to deal with lightning & I'm definitely no expert but as you saw with your water pipes very high Voltages will jump gaps if not insulated so deliberately removing insulation from incoming cables where they're close to heavy-duty earths might be helpful. There's probably 2 busbars in your fuse box, one for each supply wire, an earthed bar beside each would give a point for high-Voltage flashover to occur, or perhaps an earthed box with the supply cable running through & uninsulated in the middle. Obviously very clearly labelled & probably closed with security screws.
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  2.  @EngineeringwithRosie  any audience is a mix of people who like what they see so stay & people who are just passing through, they'll watch one or 2 videos & move on. So the question is, do you like the audience you've got? If you like your audience the way it is just keep the mindset & formulas you're currently using. There's around 4 billion internet users so a few thousand will always follow you but is it the particular few thousand you want? I like what I see so I'm staying. :-) You're showing me more about things I want to know more about & you deliver it with a pleasant voice & demeanor. Thank you for being you.
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  3.  @mikegofton1  this is what Rosie does for her day-job, she knows what she's talking about, she's also backed up by every textbook from high-school level to university level.
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  4.  @aleksandrsnaumovs4277  you answered your own question – "it's in it's infancy".
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  5.  @WeatherGuardLightningTech  have many survived the lack of protection?
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  6. I don't see that much needs to be invested, all the research was done decades ago. Electricity was first commercially generated from geothermal in 1904 in Italy, the fracked wells in the video have been in use since the 1960s. The most recent development is the microwave drilling but even that is decades old. It's all stable, mature, established & well understood technology, it just needs someone to build more.
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  7.  @gregorymalchuk272  UK has the most expensive energy on Earth, not Germany.
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  8. I don't believe you.
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  9. Which country?
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  10. in general this is absolutely true but where the soil is white chalk the specific frequency of heat reflected goes straight out to space with no atmospheric heating.
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  11.  @BatMan-oe2gh  it still beats 363km² to hold 2.2 million people though (soon to be half the area though with a few 100,000 dead).
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  12.  @glenryan6692  are you Sunovate?
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  13. 9:17 & 11:20 this reminds me of Electric Mountain (Dinorwig) in Wales.
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  14. 3:46 sorry to question your artistic choices but this camera angle feels like an intrusion, it's distracting & I don't like it. Sorry.
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  15. There's nothing about it on your channel?
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  16.  @DavidOfWhitehills  I don't have the skills, please explain.
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  17. what happens if the wind isn't horizontal? Clifftops, near obstructions etc
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  18. If slowing the turbines reduces deaths why is it not done by default?
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  19. they're still bringing up centuries-old items from the sea bed, it looks to be less harsh than the air. The surface where the waves are is indeed truly harsh but that's not necessarily the environment being discussed.
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  20.  @svetlicam  apparently they do but it seems it's still not good enough
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  21. (6th or 7th largest economy -- a combination of Conservative government & Brexit knocked the country down several rungs)
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  22. That was Mrs Thatcher's great transformation 😢
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  23.  @EngineeringwithRosie  there is a place in South America where a feature of the geography means there is near-continuous lightning "Catatumbo lightning (Spanish: Relámpago del Catatumbo)[1] is an atmospheric phenomenon that occurs over the mouth of the Catatumbo River where it empties into Lake Maracaibo in Venezuela. Catatumbo means "House of Thunder" in the language of the Bari people.[2] It originates from a mass of storm clouds at an altitude of more than 1 km (0.6 mi), and occurs for 140 to 160 nights a year, nine hours per day, and with lightning flashes from 16 to 40 times per minute.[3] It occurs over and around Lake Maracaibo, typically over a bog area formed where the Catatumbo River flows into the lake.[4] The phenomenon sees the highest density of lightning in the world, at 250 per km2.[5]" – Wikipedia Harvesting it would probably be an ecological disaster but the principle could surely be engineered elsewhere? (At least for fun with jumping gauges even if not for much practical benefit). There are several predictable named winds around the world, Chinook & Mistral spring instantly to mind, but it seems the wind has to be wet.
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  24. Redflow batteries, makers of an excellent zinc-bromine flow battery, have just (August) run into the next real-world problem, after 20 years they couldn't get the capital to keep finding suppliers of components 😢 The article I've just read cited the example of one component -- their entire year's supply of the component took the supplier one day to make but they had to shut their factory for a week to reconfigure & they decided that was uneconomic so they weren't going to do it any more. Redflow has gone bust owing $millions & the IP is stuck in the receivership process so nobody else can make it either 😢
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  25. ​ @PinataOblongata no, that's not legal in the West, a product has to be completely fit for sale before it goes on the market. The nearest workaround is that you can get beta testers to pay for their item but you can't get them to pay full price & a low production volume item like the OP's would saturate the market before being ready to market a saleable item 😢
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  26. If you're using the app on your phone you can adjust playback speed
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  27. ​​ @andrealeong8714 it can but it's extremely expensive, there need to be many whole power stations that only run at peak times, perhaps 2 separate half-hours per day, but the power station still has to be staffed, lit, maintained & boiler pressure kept up for the whole day in case there's a random extra peak. In places where load shedding operates those peak-only power stations can be scrapped, bringing the price down enormously.
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  28. ​ @andrealeong8714 in most countries the grid can supply normal demand, it's only USA & a few 3rd-world countries that regularly fail.
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  29. It seems some electricity suppliers are resisting installing bi-directional meters. 😢
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  30. ​ @TheCablebill Napoleon (& presumably others) famously taxed it as the crystals used to make gunpowder form on it!
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  31. The supply of sunlight is only limited in that it's predicted to dim in about 3 billion years, I suspect fossil fuels may run out a little sooner.
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  32. I don't know about tomorrow's needs but the entire world's current electricity needs can be met by covering 50% of the world's roofs with solar panels (with storage) & no other generation capacity. Obviously we do have other generating capacity already & there's more being built at an increasing rate.
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  33.  @adam872  which battery technologies did you look at? I expect all the vendors are pushing LiFePO₄ but lead-acid, flow & NiFe are also readily available. Lead-acid is cheap but 20 years is an unusually: long lifespan, they'll need automatic watering & discharge switched off really early to last that long. The next oldest is NiFe, they have a totally safe electrolyte (potash), they're rugged, reliable, almost indestructible (there's 90 year old packs around) & repairable if you can find a technician, but they're as big as lead-acid & they don't absorb all the supplied energy. Flow batteries are getting cheaper & they seem to be repairable so might last forever. You may have found others?
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  34.  @Stroporez  Ocean Thermal Energy Conversion ( OTEC)
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  35. You may be looking for "Project CHIP (Connected Home over IP)", now known as "Matter", it's been around since 2022.
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  36.  @WeatherGuardLightningTech  thanks, I'll look now
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  37. aspiring or inspiring?
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  38. That's a whole new topic I knew nothing about, thank you.
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  39. Thatcher & Reagan's Neoliberalism seems to have been first implemented by Chile's dictator General Pinochet which says it all for me.
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  40. In the UK "Economy 7" was introduced in October 1978, it offered 7 hours at 20% reduced price overnight & slightly more expensive during the day but it depended on a clock inside the meter which was tied to the 50Hz supply so had to be reset at the quarter-year meter reading and after every power cut by an official meter reader. The tariff is still available but with a more reliable clock. The Wikipedia page lists several alternatives. The UK also has pumped-storage hydro to compensate the nuclear not varying output. (Electricity is a by-product of the manufacture of weapons-grade fissile materials in the reactor core, the cores are shut down at intervals to harvest the material, I believe on a 3-month cycle, so they're not designed for the second-by-second control required to match demand & cannot achieve it now that the demand for fissile materials is reduced).
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  41. Crude oil is compost. Compost that's been compressed, heated & stored for millions of years, none of which are necessary to use it as feedstock for oil refineries. I don't know if 80 million barrels per day of compost is available though, especially as the raw vegetable matter is stored for a few weeks while it turns into compost (though that stage may be unnecessary too).
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  42. 3:26 why blow it with air? You have CO2 available, this would delete a contamination source.
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  43. they've recently completed exactly that in Denmark
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  44.  b43xoit  I've only seen number of individuals stated but I'm not actively hunting for bad stats.
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  45. there's new interconnectors every time you look around Europe.
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  46. Gas is slowly converting to biogas which does dump CO₂ into the air but it's recycled CO₂ not new CO₂ To my mind domestic cooking with biogas isn't a major issue.
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  47. but it's still fossil carbon 😢
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  48. The fastest way to that end is to use fresh compost rather than fossilized compost as the raw material, Crude Oil is after all just well-rotted compost.
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  49. ​ @dianapennepacker6854 Yamaha have probably done it to prove it's unworkable, dealerships will be looking at it & thinking "how can I sell a product at that price & with so few fuel stations?", then they'll take another look & think "how can I get my mechanics certified to work on that safely & what will it cost?"... In the early days petrol came from chemists & the owner did all the maintenance & repairs as a hobby, neither of these work now, you're unlikely to find a chemist willing to sell you hydrogen & nobody is willing to get their hands dirty any more.
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  50. ​​​​ @PinataOblongata Musk bought existing designs & hired experienced engineers to improve them, it's all engineering (the Chinese made the proof-of-concept & early production items thousands of years ago, way before Christ). What Rosie is talking about as prototyping is entirely new tech, the Space Elevator is an equivalent example in SpaceX's field. Arthur C Clarke first popularised the idea (in Fountains of Paradise & the concept has sound physics) back in 1979 but nobody has yet made one despite thousands of attempts & an ever-increasing X Prize waiting for the first one.
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