Microturbine - Page 1
Forum section: electronics / general

author: Serg2000
author_rank: Contributor
timestamp: March 11, 2024, 04:24:04 am
content: Hi ALL.We would like to open a campaign to develop a microturbine for charging mobile phonesLike this oneWhat do we need to get started?

author: Smokey
author_rank: Super Contributor
timestamp: March 11, 2024, 04:50:50 am
content: Skills?

author: Serg2000
author_rank: Contributor
timestamp: March 11, 2024, 05:22:28 am
content: Electronics engineers, electricians engineers.But it's not that.We have the know-how.We can order anyone to make a plastic structure and put it our know-how there.

author: abeyer
author_rank: Frequent Contributor
timestamp: March 11, 2024, 05:24:38 am
content: Quote from: Serg2000 on March 11, 2024, 05:22:28 amThen why are you here asking what you need?

author: Serg2000
author_rank: Contributor
timestamp: March 11, 2024, 05:36:27 am
content: Quote from: abeyer on March 11, 2024, 05:24:38 amI didn't ask what was needed for this.I askedwhat it would take to start a campaign.Does anyone here have experience?

author: Smokey
author_rank: Super Contributor
timestamp: March 11, 2024, 05:54:22 am
content: Quote from: Serg2000 on March 11, 2024, 05:36:27 amI actually bet this would be a decent place to find a DM for your D&D CampaignGood luck!

author: beanflying
author_rank: Super Contributor
timestamp: March 11, 2024, 06:47:52 am
content: So many fantastic ways to market it like strap it to your e-bike but first make sure it has a flashing LED like this oneExtra useful when you are carrying 10+kg of batteries too.....Given the variability of 'wind' and in particular smooth stable wind from one direction without a decent length pole the idea while possible is impractical. There seems to be a 'new' idea to charge a widget every month that will be awesome, just remember if it kind of is someone was there first and will likely do it cheaper.

author: Serg2000
author_rank: Contributor
timestamp: March 11, 2024, 12:17:36 pm
content: So we are the first with our know-how and it will be cheaper with us.Just tell me where and what button to press to start the campaign.Do u know that ?

author: langwadt
author_rank: Super Contributor
timestamp: March 11, 2024, 12:21:10 pm
content: Quote from: Serg2000 on March 11, 2024, 12:17:36 pmyou are joking, right?

author: Serg2000
author_rank: Contributor
timestamp: March 11, 2024, 12:31:17 pm
content: No.We never messed with this.We don’t know where to start and wanted to hear the experience of someone who did it. How to do this better?This is not the only project we have and we want to launch several.Is this possible?

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 07:18:59 am
content: Yeah, it seems we to have figured out how to start.The boss asked me to create a start page on Indiegogo for one of our projects.Has anyone used this platform?Can you give any useful advice?

author: beanflying
author_rank: Super Contributor
timestamp: March 12, 2024, 07:27:16 am
content: Quote from: Serg2000 on March 12, 2024, 07:18:59 am1: Indiegogo is responsible for so many scams and unfulfilled 'products' over time with 'backers' (not customers because that is not guaranteed or even a requirement) left out of pocket.2: The fact you are here in public asking how to go about it shows you are secondly fundamentally unqualified to execute 'the boss's request' and put your name to it.Suggestion is find a job you are better qualified and have the skills to do.

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 07:40:56 am
content: Quote from: beanflying on March 12, 2024, 07:27:16 amThanks for the answer.1. Everyone is responsible. Including the governments of the countries that spend your money.2. I’m not asking how to do this, I’m asking for advice from those who have worked with this.In the absence of advice, I’ll figure it out myself, faster than you.

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 12, 2024, 08:22:46 am
content: Could you describle the energy flows of your solution with some few simple maths please ?

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 08:46:18 am
content: Quote from: Coordonnée_chromatique on March 12, 2024, 08:22:46 amI don't specialize in this, but it seems to me that everything is quite simple here1. propeller with a diameter of 0.15 m and an area of 0.018 m^22. water speed 3 m/s3. power 80 watts4. for 10 hours 1 kWherror 15%enough ?

author: Ian.M
author_rank: Super Contributor
timestamp: March 12, 2024, 09:05:41 am
content: Quote from: Serg2000 on March 12, 2024, 08:46:18 amWhoops, we didn't know you were making a water turbine. To efficiently extract energy from an unconstrained axial turbine in an incompressible fluid like water you need blades shaped like a boat propeller rather than an aeroplane propeller, and a lot more blade area relative to the swept area.Also, immersed generators are problematic. Maintaining a watertight seal on a rotating shaft long-term, that will stand up to the abrasion of possibly silty water is *difficult*. To avoid significant loss of energy, smooth flow over the generator body is desirable so it must be well streamlined.Lastly 3m/s is nearly 11 km/h, a flow velocity that can typically only be found in mountain streams, rapids, and fast flowing floodwaters, and it will typically be impractical or dangerous to camp close beside them while your USB device charges, and certainly not good for your phone to attempt to charge it in the splash zone!

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 09:19:37 am
content: They asked for math, I gave it.3 m/s is much?let's take 2.power 24 wattthese are two 12 W LED bulbsunlimited lighting for your campsite + smartphone charging during the day

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 10:13:31 am
content: Here is one of the projects of our team.This is a Pre-Launch-PageJust click on the pix

author: langwadt
author_rank: Super Contributor
timestamp: March 12, 2024, 02:44:21 pm
content: Quote from: Serg2000 on March 12, 2024, 10:13:31 amHydro is that you again?

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 12, 2024, 03:40:49 pm
content: Quote from: Serg2000 on March 12, 2024, 09:19:37 amHello, a Pleton impeller would give a better efficiency even without injectors... but the real problem is the resistive torque of your generator, have you calculate it ?

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 04:16:38 pm
content: Quote from: Coordonnée_chromatique on March 12, 2024, 03:40:49 pmwhy do you think so ? this is wrong.but even if this is so, then what prevents us from using thisPletonPelton impeller?Quoteresistive torque depends on the power supplied by the generator. we know it, we don’t need anything else.why do you need resistive torque? where do you want to use it?do you understand well what you are talking about?

author: Serg2000
author_rank: Contributor
timestamp: March 12, 2024, 04:21:06 pm
content: Quote from: langwadt on March 12, 2024, 02:44:21 pmpardon ?yes, we develop microturbine.hydromicro turbine

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 12, 2024, 04:37:23 pm
content: Quote from: Serg2000 on March 12, 2024, 04:16:38 pmNo, i don't have this ability.

author: Smokey
author_rank: Super Contributor
timestamp: March 12, 2024, 09:37:57 pm
content: Quote from: Ian.M on March 12, 2024, 09:05:41 amWTF? Why are you going into technical details? He said:Quote from: Serg2000 on March 11, 2024, 05:22:28 amIt's almost like you don't trust him!? Just set up his Indigogo already!

author: beanflying
author_rank: Super Contributor
timestamp: March 12, 2024, 11:22:30 pm
content: Quote from: Smokey on March 12, 2024, 09:37:57 pmIt was already setup the day before this thread was created.Technically the owner has the background to make this work in the hydrological sense. But with as far as I can see zero background in volume manufacturingThe real question is why should this forum get used to assist in or promote an Indiegogo campaign given the terrible history of fail on that platform?

author: Smokey
author_rank: Super Contributor
timestamp: March 12, 2024, 11:54:11 pm
content: Quote from: beanflying on March 12, 2024, 11:22:30 pm....https://www.eevblog.com/forum/chat/why-dont-we-make-use-of-water-wheels/?all...Coincidence.....?

author: beanflying
author_rank: Super Contributor
timestamp: March 13, 2024, 12:00:06 am
content: Serg has a legal non technical background while the other is a 'Technical' Nutter

author: langwadt
author_rank: Super Contributor
timestamp: March 13, 2024, 12:05:20 am
content: Quote from: Smokey on March 12, 2024, 11:54:11 pmmore like ,https://www.eevblog.com/forum/chat/unusual-design-of-a-free-flow-hydropower-station/

author: Serg2000
author_rank: Contributor
timestamp: March 14, 2024, 02:26:06 pm
content: UpdatedQuote from: Serg2000 on March 12, 2024, 10:13:31 am

author: ebastler
author_rank: Super Contributor
timestamp: March 14, 2024, 04:18:28 pm
content: Hey Sergey, interesting to see you back.I am not sure whether it is acceptable on this forum to re-join under a different account name after you have been banned. You might want to seek approval from the admins, explaining why you consider this appropriate.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 03:08:58 am
content: Quote from: ebastler on March 14, 2024, 04:18:28 pmWho you are ? Do we know each other ?

author: Halcyon
author_rank: Unknown
timestamp: March 15, 2024, 03:36:36 am
content: Quote from: Serg2000 on March 12, 2024, 04:21:06 pmHe asked a very reasonable question. Considering you're the same human behind both accounts, do you want to look silly in front of everyone and pretend you're someone else, or are you going to admit that you created another account after you were banned? Decide carefully because my tolerance for games is low today.

author: EEVblog
author_rank: Unknown
timestamp: March 15, 2024, 03:46:22 am
content: Quote from: Halcyon on March 15, 2024, 03:36:36 am

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 06:07:06 am
content: Quote from: Serg2000 on March 15, 2024, 03:08:58 amJust penpals from your earlier visit here as "Hydro"...It's a step in the right direction that you now disclose your affiliation with ERG, rather than trying to act as an undercover claqueur. Like Halcyon, I would encourage you to be open about your background and intent.In that spirit, could you clarify your location? You claim to be US-based, both in your forum profile and on Indiegogo -- but actually seem to be based in Uzbekistan?

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 08:18:22 am
content: Quote from: ebastler on March 15, 2024, 06:07:06 amI don't know you. I don’t know your last name or first name.If you corresponded with someone from our team, then obviously not with me.And your statements look strange. If a Microsoft employee writes to you, will you be sure that Bill Gates is writing to you?I am a resident of Uzbekistan (and another country), but I don’t always live in Uzbekistan and travel a lot.On the forum, I wrote the country of location, because crowdfunding companies accept applications only from applicants from certain countries who have accounts in banks in these countries. Uzbekistan is not included in this list.We have a US registered company from which the application is being submitted. That's why I put this flag up so that visitors won't have any questions about the legitimacy of submitting an application to kickstarter.Have I answered your questions?

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 09:20:36 am
content: Quote from: Serg2000 on March 15, 2024, 08:18:22 amI don't think you need to know my name. In contrast to you, I am not running a crowdfunding campaign and pitching it here.Since ERG is a tad smaller than Microsoft, I do indeed assume that "Serg" from ERG is Sergey Shevtsow, their "Chief Product Officer". If I am mistaken, feel free to correct me. And no, you and I have not corresponded via email or such; just discussed here on the forum when you were registered as Hydro. (Which you were, right? You have not commented on that yet.)Thanks for the clarification regarding your location. I'll take your word for the US entity, and would hope that Indiegogo verifies such things. I never understood why those seeking funding on that platform don't have to disclose their company details to the audience of potential backers; but apparently that's how they work.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 10:05:16 am
content: Quote from: ebastler on March 15, 2024, 09:20:36 amIf you want to correspond with me, then in any case, I need to know your name. If not, then we will not correspond.ERGroup is much smaller than Microsoft, but has employees and volunteers. Don't you think that I myself translated the subtitles into Arabic, voiced the text of the video and did the accounting?Yes, my name is Serg, but my last name is different, SergeyShevtsowShevtsov - CPO, I am a programmer, web designerI don't know what you mean by Hydro. Has anyone registered under this nickname? Please clarify.I don't care whether you take my word for it or not. I don't have to answer to you for this. Especially without knowing who is hiding behind this strange, meaningless nickname.We do not seek funding on this platform.We are looking for funding on the Kickstarter platform.This platform is used for public opinion research, information and feedback. As far as I understand, this is what it is intended for.In conclusion, I will say a proverb in our language. I don't know if the translation will be accurate, but try it yourself."Пул топилган квартиранинг калитини беришим керакми ?"

author: tggzzz
author_rank: Super Contributor
timestamp: March 15, 2024, 10:14:17 am
content: Quote from: Serg2000 on March 15, 2024, 10:05:16 amebastler makes sensible points. YTA.If you want people to invest their money in your company, it is necessary for you to be open an honest - about the technology, its performance, its state of development, the company, the country, etc etc.Adding an untranslateable/ambiuguous proverb in a language that gurgle (mis)identifies as Kyrgyz is not a good ending point.

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 10:19:39 am
content: Quote from: Halcyon on March 15, 2024, 03:36:36 amQuote from: Serg2000 on March 15, 2024, 10:05:16 amHmm... looks like youdowant to play games?I advise against it. Halcyon holds much better cards than you.

author: shapirus
author_rank: Super Contributor
timestamp: March 15, 2024, 10:29:07 am
content: You want money, you show a working prototype and demonstrate real world measurements. You post renders and buzzwords, you go fund yourself.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 10:36:27 am
content: Quote from: tggzzz on March 15, 2024, 10:14:17 amI think that this is not the end point, but the starting point.Instead of discussing the technology and asking questions about the technology (but you were given a Pre-Launch-Page and a video) you launched into some kind of personal showdown that I’m having a hard time understanding.The details you are talking about are filled out in the complete kickstarter application. If you need to give a draft of it for feedback, then I will ask the boss if it is possible to post it on the forum.If you have questions, ask.I will answer those that I can answer, and I will send others to our specialists.If you need to calculate the area of microturbine blades and its power, then I can do it.Quote from: tggzzz on March 15, 2024, 10:14:17 amTry Uzbek

author: Simon
author_rank: Unknown
timestamp: March 15, 2024, 10:52:08 am
content: You need to understand that Indigogo is notoriously used by people looking to defraud people of their money in a way that is legally not considered fraud. There have been many ridicolous projects on there that have turned out to be nothing in the end. The "company" uses the money to pay it's "employees" but their project is either never going to work or was never going to work. Often the products are a rehash of an existing technology and nothing new but claiming some secret ingredient that makes them an innovation.Legally this sort of "investment" does not have to give the investor anything back and if the "company" fails then the money is certainly lost. There is no legal come back on the "company" taking the money. This makes crowdfunding an easy target for fraudsters as the whole premise that this is a risky investment covers them when they take the money and run. Usually they do not literally do that as that may have legal implications so instead they spend the money that is effectively donated to "the company" to pay it's "employees": themselves to make a show of doing R&D etc but in the end this can fail, the "employees" got paid for some years to mess about on a non project and the money is all "spent" and the "company" abandons it's efforts. That is of course if they do not do more "funding" rounds possibly for "new ideas" and so it goes on.That is the background with which anyone here will approach your "company". Extraordinary claims require extraordinary evidence, where is yours?

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 11:15:17 am
content: It's clear. Thanks for the detailed explanations.They require a detailed answer.I won't have time today. And I need some advice.Can you give me until tomorrow?In the meantime, you can watch the Pre-Launch-Pagehttps://www.eevblog.com/forum/crowd-funded-projects/microturbine/msg5387063/#msg5387063and videohttps://www.eevblog.com/forum/crowd-funded-projects/microturbine/msg5392496/#msg5392496There are already answers to a lot of things.

author: tggzzz
author_rank: Super Contributor
timestamp: March 15, 2024, 12:13:29 pm
content: Quote from: Serg2000 on March 15, 2024, 11:15:17 amNot in that video there aren't.It is stock footage of windmills (etc), "hooray" advertising slogans, cartoons, and zero technical claims with any substance. Classic example "80% more efficient than existing similar devices". That statement could be satisfied if your device generates 2µW rather than 1µW.Don't forget that we are engineers, and that means astandard part of our everyday jobis to assess whatisn'tbeing said, and to weed out advertising bullshit. That's why lawyers (allegedly) don't like selecting engineers for juriesCan I suggest that in the near future you add your device and campaign tothis thread.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 12:37:27 pm
content: Quote from: tggzzz on March 15, 2024, 12:13:29 pmThere are answers to some questions there, you just don't see them.You see neither questions nor answers.Perhaps precisely because you are engineers.In addition to engineering issues, there are also social, environmental, political, etc. issues.There really are no answers to engineering questions there. And no video is intended for this.This is called a "promotional video."We will definitely return to engineering issues.I didn't quite understand this phrase.QuoteWhat does "add your device" mean? Should I bring a device weighing 3 tons or post all the drawings here?What does "add campaign" mean? The campaign has not yet been launched, but is just getting ready. If you need a draft, I'll check with the boss, as I said.

author: shapirus
author_rank: Super Contributor
timestamp: March 15, 2024, 12:41:44 pm
content: Talk is cheap. Show us the numbers. Every project like this is considered BS until numbers are presented. Demonstration of a working prototype is also a requirement.

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 12:58:31 pm
content: Quote from: Serg2000 on March 15, 2024, 10:36:27 amLet me try to help you understand... This topic has a history here. You (or, for the sake of the argument, let's say "someone") registered as "Hydro" a couple of months ago, presented the same technology, and also looked for "feedback". Hydro took the unusual approach of hiding a lot of facts he wanted feedback on, and generously dishing out insults along the way. While it was amusing on some level, it also caused a lot of aggravation.We would like to know why we can expect better this time. Is this new incarnation of ERG going to be civil, sincere and open?You are not off to a great start with this "who the heck is Hydro?" approach. We can all recognize writing styles; moderators can also compare IP addresses and presumably other user fingerprints. Halcyon, who is a moderator here, has already confirmed that you seem to be the same person as Hydro.If you level with us now, you may still be able to turn this around.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 12:59:04 pm
content: Quote from: shapirus on March 15, 2024, 12:41:44 pmSo we don’t take money from anyone here and they don’t demand it from us.This is a forum.Numbers are not an indicator either. The numbers for a thermonuclear reactor are huge, and 70 years are just numbers. Where is the result?Have you filled out an application for Kickstarter? Have you filled out applications at all? For some grants.Do you know what the criteria are?When I send the application here, there are numbers, calculations, and scientific justification.Be patient.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 01:08:27 pm
content: Quote from: ebastler on March 15, 2024, 12:58:31 pmI can also send you my DNA and blood type.Or will we talk about the substance of the topic?I said just as the boss will approve posting a draft of the Kickstarter application on the forums, ask questions.Well, or you can now, based on the information you have.I will answer as best as I can.I can’t, I’ll send it to specialists.QuoteWhere is it ? May I see it ?

author: shapirus
author_rank: Super Contributor
timestamp: March 15, 2024, 01:13:39 pm
content: All right, so nothing but BS so far.

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 01:28:30 pm
content: Quote from: Serg2000 on March 15, 2024, 01:08:27 pmOh, now you have convinced me that it's not you and you have never seen that thread before.https://www.eevblog.com/forum/chat/unusual-design-of-a-free-flow-hydropower-station/There was another one in the Crowd Funding section, but I think that got deleted entirely.

author: Bud
author_rank: Super Contributor
timestamp: March 15, 2024, 01:47:02 pm
content: A water turbine to charge cell phones? Really?

author: tggzzz
author_rank: Super Contributor
timestamp: March 15, 2024, 02:07:37 pm
content: Quote from: ebastler on March 15, 2024, 12:58:31 pmBased on his current responses, he won't be able to turn it around.Badstartingcontinuing points: bluster, not answering questions, and trying to deflect conversations away from those questions.

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 02:33:11 pm
content: Quote from: tggzzz on March 15, 2024, 02:07:37 pmLet's see what Halcyon thinks once he checks back in. It seems that he has looked into these two user accounts, and had specifically discouraged the behaviour we see now.

author: Serg2000
author_rank: Contributor
timestamp: March 15, 2024, 02:46:13 pm
content: Quote from: ebastler on March 15, 2024, 01:28:30 pmi quickly looked at your link TL;DR - som kind of nonsense. Some kind of incomprehenible design that has nothing to do with ours.i havn’t loked further yet, I don’t have time yet.here is a link to tje draft aplication.https://www.indiegogo.com/project/preview/157eeca6#/faqthere are links to articles somewere in the texts. you probably need to read them too.if you have any questions, writ e them here, and when i’m free, ill come in and pick it up.

author: Simon
author_rank: Unknown
timestamp: March 15, 2024, 03:22:42 pm
content: Quotesounds like you are quoting fan laws there, or the laws that apply to actual turbines, sure they apply to these paddles too?QuoteSo you have not studied existing turbines like say the ones used in dams, they also do not harm fish, so why is yours special.Quotebe careful. Lots of dodgy products like to claim their 24 hour output for bigger numbers. the standard is kW, stick to established engineering standards, it looks less like you are running some scam then. Chinese wind turbines off amazon anyone?shall I go on?

author: abeyer
author_rank: Frequent Contributor
timestamp: March 15, 2024, 05:35:37 pm
content: Quote from: Serg2000 on March 15, 2024, 02:46:13 pmSo you're saying the fact thatthis sitewhich isalsocalled ERG, and whichalsoused many of the same graphics as you do, andalsodoes the same work, and was used by Hydro to post files here is all purely coincidence and his posts were nonsense but yours aren't?

author: ebastler
author_rank: Super Contributor
timestamp: March 15, 2024, 06:53:23 pm
content: Quote from: abeyer on March 15, 2024, 05:35:37 pmAnd strangely, Hydro even shared his water-power videos using the same"ERG" Youtube channelwhich Sergey has now advertised. Hydro's old videos have been taken down, but the fact that he used that channel is stilldocumented in the old thread.Sergey, dear -- you had a chance to own up to the "Hydro" episode, but you have failed epically. How do you expect us to take you seriously and trust you now? Time to say goodbye and come back with a third account in a while...

author: Smokey
author_rank: Super Contributor
timestamp: March 15, 2024, 08:12:31 pm
content: Wouldn't it be funny if this guy was actually a completely different guy who is really genuinely SUPER EXCITED ABOUT MICROTURBINES!!!!!!!!!!!!, and it's a just a coincidence that he showed up here when he did?Should I ask for his help on my MARS ROVER for MARS!!!!

author: EEVblog
author_rank: Unknown
timestamp: March 15, 2024, 09:50:07 pm
content: Quote from: Smokey on March 15, 2024, 08:12:31 pmSerg2000 is Hydro. Banned for not admitting it.

author: EEVblog
author_rank: Unknown
timestamp: March 15, 2024, 09:52:06 pm
content: Quote from: Bud on March 15, 2024, 01:47:02 pmThat was a Kickstarter once:https://www.kickstarter.com/projects/hyerinster/estream-a-portable-water-power-generator-fits-into

author: schmitt trigger
author_rank: Super Contributor
timestamp: March 15, 2024, 11:05:39 pm
content: Funny; I am staying at a friend’s home, and on the YT channel TechZone, there were these ERSTREAM water micro-turbines casually being shown as I was reading this thread!They mentioned that the kickstart fundraiser was successful.Among the suggested applications were charging cell phones on the woods.

author: langwadt
author_rank: Super Contributor
timestamp: March 15, 2024, 11:42:12 pm
content: Quote from: EEVblog on March 15, 2024, 09:52:06 pm$147,863 what the F...

author: langwadt
author_rank: Super Contributor
timestamp: March 15, 2024, 11:44:03 pm
content: Quote from: EEVblog on March 15, 2024, 09:50:07 pmwith that kind of games I'm sure the project is completely honest and trustworthy

author: beanflying
author_rank: Super Contributor
timestamp: March 16, 2024, 12:35:12 am
content: The Principal does have some technical credibility on an ability to design this. BUT the overall premise was based on over inflated claims using unrealistic physical factors showing it was 'perfect' to release and market it on Indiegogo along with a false flag to compound the fake beginning.Technically this will work but the reality is the power output 'claimed' was based on a near flood water flow speed, the simple reality is water flow much above 1/3 of this you would want anything being powered 10+m away minimum. If you do some basic calcs then at the initial claimed power and flow rate given then the actual wattage from a 150mm impeller is well within range and a sensible efficiency. Power output at a reduced velocity falls off dramatically at these lower speeds.Practically the 'idea' is a flawed one as it only works in a very small subset of locations used by Campers and Water (kayak, canoe etc) users. This is going to be compounded in a stream situation with getting the turbine out into that stream and tethered in place and held above the bed without chopping down a forest or finding that miracle downed tree in just the right spot. Towing is behind you is just DUMB if you have ever done any flat water paddling the last thing to want is a Sea AnchorSo this thread should stay in part as a warning to ANYONE thinking of backing a microturbine project or anything put up by the Principal Treschchalov German or his companies including ERGroup.

author: Halcyon
author_rank: Unknown
timestamp: March 16, 2024, 12:39:31 am
content: Quote from: Serg2000 on March 15, 2024, 08:18:22 amGood. The way it should be.

author: Smokey
author_rank: Super Contributor
timestamp: March 16, 2024, 02:29:07 am
content: Quote from: langwadt on March 15, 2024, 11:42:12 pm" Last updated October 13, 2017 "

author: Nominal Animal
author_rank: Super Contributor
timestamp: March 17, 2024, 06:07:24 am
content: Quote from: EEVblog on March 15, 2024, 09:50:07 pmThis is what Ireallylike about the moderation here. Nothing is ever perfect, and if one admits to an error, and promises to not repeat the problems in communication, they can get a second chance. But, if they do not and just repeat by creating a new account, they get banned. This is how it should be, because as humans, we make errors, but can also change how we interact with others. (Using a pseudonym helps with that, because it reminds one that others do not react to yourperson, but to youroutput. For some personality types like mine, this is very important.)There is obviously something fishy about the project this thread is about, because of the games with the poster identity. We cannot know whether it was intentional (as in trying to use EEVblog forums as a harebrained way to gain credibility for something the authors know is basically doomed to fail), or unintentional (someone so blinded by their own idea that they cannot communicate about it without sounding like a single-minded fraudster), but the whole scheme reeks of something rotten underneath.There are lots of projects for small-scale damless hydropower, from waterwheels to underwater stream turbines. The common factor in these is that only a tiny fraction of the energy in the water flow is harvested, so the stream/flow is minimally affected; plus the electricity output is very modest; overall, comparable to smallest wind turbines. There is nothing wrong in starting a yet another project like that, but you do need to 1) do your background work diligently, to find out about similar past projects and their wins and failures, and 2) be open about all that. None of this will be a huge commercial success, because the field –– hydropower in general –– iscenturies old by now. Everything easy or simple or obvious has been done again and again already; any successful product will have to combine the best features of both existing designs and existing manufacturing capabilities, to be successful. The project here did not do either.(I have done some online research on underwater flow turbines, but their major problem is that any debris or water plants tend to clog them up. My root idea was a hubless turbine with permanent magnets at the tips, and the coils in the enclosing double funnel tube. For something like charging your phone from a small stream for the night when camping/trekking it should work (with very limited electricity output!), as it ends up being cleaned daily, but for anything longer-term, they just are not suitable. My own conclusion was that a portable wind turbine would perform much better, especially if you could prepend a hand-cranked gearbox in front for emergency charging.)

author: abeyer
author_rank: Frequent Contributor
timestamp: March 18, 2024, 12:43:43 am
content: Quote from: Nominal Animal on March 17, 2024, 06:07:24 amHear, hear! I don't always agree 100%, but it's worth taking the chance to recognize the efforts of the mods. It's absolutely not an easy job, and their work is appreciated.Quote from: Nominal Animal on March 17, 2024, 06:07:24 amI'm of mixed feelings on this... I get that it's helpful to you, and many others, but there also seem to be plenty of people who just take the opportunity to treat it as a "disposable" identity where they can say things they shouldn't and wouldn't otherwise, because they don't fear any permanent/IRL repercussions.

author: Nominal Animal
author_rank: Super Contributor
timestamp: March 18, 2024, 07:17:29 am
content: Quote from: abeyer on March 18, 2024, 12:43:43 amTrue: that is the negative side.Similar issue exists in real life too, when people see others as part of a business or machinery instead of people, and/or rely on anonymity to shield them from repercussions, when they do stuff they'd never do to people they know. This shows up even statistically: in urban environments, certain types of crimes like theft increases superlinearly –– more thefts per person –– as the population size increases (source).In my own case, and most others who I believe use pseudonyms in a similar, shall we say 'positive' way, are heavily invested in them; they are definitely not disposable. Perhaps not as permanent as ones legal name, but definitely not disposable. For me, it is the identifier for my output I want to use long-term. For example, I've had my own matching.net domainfor over a decade, in the hopes that someday, I would be ready to put some of the stuff I've created there for others to use and learn from. As of mid-March 2024, after doing some quick web searches, all occurrences of 'Nominal Animal' as a username or pseudonym I could find, do all refer to myself. Or specifically my own output, rather.I bet this would be a very interesting research subject for someone interested in psychology/anthropology/history, because we can see the same in most creative industries across history, especially with performing artists. I suppose it is how 'brand names' originated, too.

author: Simon
author_rank: Unknown
timestamp: March 18, 2024, 08:00:03 am
content: There is a reason people like to live in the countryside or villages. The only reason most don't is the price or the inconvenience as services are more limited and it's more isolating. But it's that isolation (low numbers of people) that bring people together.We had no moderation at the start on here, or rather no official moderation. Some of us and I was one would wade into the rare arguments and try to get the two parties to be amicable as users. Yes it got harder as an official moderator as we stopped being that cozy community and were much bigger, the anonymity factor kicked in and the official establishment to hate come into being. I miss the days of it being a few hundred users and no moderators. We actively tried to get along as we all knew each other in the much smaller community that we were.