The Future of Heat Pumps is Underground (and other places, too!)

1 apr 2021
379 726 visningar

If you thought you were pumped earlier, wait until you get a load of this! Policymakers, pay attention!
Heat Pumps Part 1
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  • Hey everyone, it’s pinned comment time! And there are some *corrections and clarifications* here. Exciting! First, heat pumps part 1: Second, refrigerants! Sloppy script-writing me didn’t catch that I implied CO2 as a refrigerant was the _only_ other option, but it’s not! There have been many climate-friendly refrigerants in use in lots of applications such as isobutane and propane, but the main trouble with these is they go boom sometimes. In larger systems the quantities needed can be dangerous which is why R-1234yf and CO2 as refrigerants are important! Third, heat pump dryers! My explanation into them is, um, well not right. It’s better to think of them as giant dehumidifiers that recirculate air through the drum. Heat slowly builds up, but it’s not really being taken from the room. Instead it’s just the heat created by the compressor being continually recaptured, and a sort of thermal feedback loop forms. The cold surface of the evaporator also pulls the moisture out to be collected. Here’s a video from This Old House that has a great diagram (though the refrigeration cycle’s magicalness of latent heat is pretty much skipped) Fourth, I regret saying it's a "myth" that tankless heaters provide instant hot water. More fairly I think it's a misconception. Fifth, I dunno! I’ll add stuff here as we go along. Aren’t pinned comments neat? I love being able to put information right up at the very top for you so you don’t have to waste your time commenting!

    Technology ConnectionsTechnology Connections22 dagar sedan
    • @moonra Yeah! The poor shareholders! They got the vaccine research completely subsidized, and can't make billions off the back of a catastrophe! Whatever will they do? Get a real job?

      K VK V3 dagar sedan
    • @K V But won't someone think of the shareholders!?

      moonramoonra3 dagar sedan
    • @Hifi Teen nah the jacket Is just 80s Ireland

      0972q80972q83 dagar sedan
    • New Irish houses have put the ac on the ground using heat pump

      0972q80972q83 dagar sedan
    • Two questions and a comment -- One, if you can answer it ;) my mother has a Goodman heat pump; it's an odd duck of a unit, it's an all-in-one outdoor module (i.e., one big metal box where all that's inside the house is the ductwork) rather than a split unit but it's used in a residential home. It was put in in the early 2000s... we are *extremely* low income (both on SSDI) and she could *really* benefit from either a refit of some sort to the unit (better refrigerant) or a replacement unit. Which would be better both cost-wise and for effectiveness? We live literally in the middle of NC. Two, I've long heard that refrigerators from the 1950s, the ones *before* the early auto-defrost models that you just unplugged for half a day once a year or so, that those are more efficient (if you can buy one in working condition!) than any modern refrigerator on the market. Is that something you have a video on... or can do some sleuthing about? I'd be interested to know more about that. Comment -- love your channel, and especially the outtakes every video. (Dirty little secret, yours are the only videos where I watch the credits / Patreon crap sequence / etc, and it's specifically because those outtakes make me giggle so much.) Oh, and bonus comment for the fridge video (?), sulfur dioxide was real popular as a refrigerant in the 1930s ;) it's in the old monitor-top fridges from that era (or so I hear). Also highly toxic (or so I hear), but at least you'll smell a leak LONG before toxicity is an issue (or so I hear!)...!

      laserhawk64laserhawk643 dagar sedan
  • IMO homes should be built with central condenser gas and evaporator liquid systems hooked up to one big central heat pump. That way everything that needs to be heated and cooled can be done in one big efficient system instead of a bunch of small compressors running, and needing to use your house's air to shuffle heat around.

    Michael DebbinsMichael Debbins3 timmar sedan
    • Bonus points if the central system is an absorption heat pump, and gets its energy from solar heating

      Michael DebbinsMichael Debbins3 timmar sedan
  • 👍

    Gacheru MburuGacheru Mburu12 timmar sedan
  • desuperheater ... heats water from the heat pump as it heats and cools your home.

    Steve SpenceSteve Spence13 timmar sedan
  • I certainly see the points of heat pumps much better now and a friend has a heat pump/heating element hybrid water heater that has convinced me that's good especially since he doesn't have natural gas. I learn a lot from you but I'm hoping you actually go deep enough to stop believing and pushing the lefty climate agenda. You've demonstrated that you want to convey and teach accurate and correct information even correcting yourself when needed and are willing to do so especially when it breaks from conventional wisdom. Just hoping you get there eventually.

    JackWebb128JackWebb12821 timme sedan
  • There’s not a chance in hell “next gen refrigerants we really need” are ever developed if you take away the profit incentive of patents unless you replace it with something like direct subsidies like we’ve been doing with electric cars.

    RadicalxEdwardRadicalxEdward22 timmar sedan
  • I’d be SERIOUSLY against making more things “unpatentable” just because some body says it’s too important. That would be ripe for abuse. _EVERYTHING_ is tied to climate change these days for political benefit. What we do need is patent _reform_ where they simply can’t last for hundreds of years, be extended, etc just because a company owns them rather than an individual.

    RadicalxEdwardRadicalxEdward22 timmar sedan
  • I want to like this video 100 times.

    The Bass is LoadedThe Bass is Loaded23 timmar sedan
  • I don't like heat pumps when it gets cold...even with a nicer thermostat I found while it kept comfortable it did so at enormous cost... ended up tuning the aux heat lockout temp to make it more like the "dumb" systems so it blows colder but doesn't run up $500+ bills. Gas heat is so much more consistent and also WAY cheaper in colder friends with gas heat pay about half the cost (combined gas and electric) as we do for electric heat pump only.

    Matthew MillerMatthew MillerDag sedan
  • This whole topic is a total rabbit hole. I started looking into the heat pump water heaters, dryers, etc. and stumbled upon heat pump spa heaters. After scanning over the available technology, I came across a series of heat exchangers that are designed to work with your ac. One heat exchanger is used to heat your home water. There is still an outside unit, I suppose for the excess heat. There is another heat exchanger that is used as a pre cooler before the evaporator and it is used to supplement pool or hot tub heat. When you boil it down, all of these efficient systems revolve around using the heat in your air to warm your water in some way. Either way, both systems claim to increase your ac cooling efficiency by around 15%, and give you free hot water in the process. I feel like this topic needs as much scrutiny as the CED. We are talking free energy here. There is no reason you should be paying to heat the outside in the middle of summer and still pay for hot water. Also I wonder what the economics would be as far as using swimming pools in conjunction with solar and heat pumps as sorts of energy batteries. btw. I live in South Mississippi.

    kentofmississippikentofmississippiDag sedan
  • I think it isn't enough said by your audience, since most porbably the majority of them are in US. BUT THANK YOU A LOT for converting all the temperatures in Celcius, it helps A LOT for me and all people who watch you outside from US! TNX!

    EzerArthiomEzerArthiomDag sedan
  • it seems that packaging and efficiency seems to be an issue with ev heatpumps ...well atleast thats how toyota made it sound with the incorporation of gas injection tech in the Prius prime's heatpump

    James MikeJames MikeDag sedan
  • Won't indiscriminate drilling have the possibility to screw with the ground if some unknown stuff happened under it? this happened to Staufen im Breisgau in 2007: while the town hall was drilling for what i assume is a geothermal heat pump, they penetrated an anhydrite layer, which allowed groundwater to seep in, causing the anhydrite to expand. now the entire town is slowly cracking as the ground expands unevenly beneath their feet. sure, this is a "but sometimes" argument, and this could be avoided by...proper surveys, i don't know the actual term, but can you trust every public authority to properly perform that due diligence? it's on the same sort of scale, albeit of a lesser order of magnitude, to a possible return of nuclear power: both the benefits and possible consequences are immense.

    leo the idiotleo the idiotDag sedan
  • Here I thought he was an intelligent person, and then he has to stick his political and economic opinions.... I'm pulling my patreon.

    SteveVi0lenceSteveVi0lenceDag sedan
  • Please reincarnate me as a heat pump 🙏

    Nicholas NelsonNicholas NelsonDag sedan
  • I swear by by both of these tech's. Both our HWS systems have CO2 as a refrigerant. R744. Super efficient. The brands are Sanden & Reclaim Energy. One for the house & the other smaller on the Airbnb. (Much cheaper than gas HWS.) They both operate on timers, only in the daytime to utilise our rooftop solar electricity. Because we have 2 Airbnb's, we need a dryer. We chose an Electrolux heat pump dryer & it's also fantastic. We only use that if it isn't fine weather, as we hang the sheets & clothes up in the backward on the direct solar drying clothesline.

    guringaiguringaiDag sedan
  • make him president

    Allison Burtenshaw-deVriesAllison Burtenshaw-deVries2 dagar sedan
  • I do get the need for earth friendly solutions, but patents are there to help developers recoup their R&D costs. Then they expire... eventually lol. Brought to you by "Capitalism"! Otherwise, I love your videos, keep the knowledge rolling! Thanks!

    SkaggthebassmanSkaggthebassman2 dagar sedan
  • Ammonia is still used all the time in large scale industrial refrigeration operations.

    Stephen BennerStephen Benner2 dagar sedan
  • I watch your show because you digress. I hate to see a sharp knife dulled, especially for the whimsy of the dumb dumbs

    Thomas LancasterThomas Lancaster2 dagar sedan
  • In my country, we use thermal solar collectors to heat water during winter days (it's like sonar panels on the roof, but no electricity inside, they are just water tubes inside a flat transparent box and some concentrating mirrors). It works pretty well for having a boiling shower and cooking things. And if you have a good water tank, you can keep it warm for the whole night. And it's even possible to build them by yourself, if you like tinkering =)

    Friday CaliforniaaFriday Californiaa2 dagar sedan
  • Latent Heat; shouldn't that be called Implausible Heat?

    Robin RhyneRobin Rhyne2 dagar sedan
  • What about natural gas powered compressors?

    Het SmiechtHet Smiecht2 dagar sedan
  • to be fair, and with no excuse as to why it took them so long, Tesla now has heat pumps standard on the 3 and Y as of 6 months ago i think... pisses me off because my resistive eats like 35% of the battery and i see NO reason for it not to have been included from the start - those engineers were certainly smart enough to do it and it doesn’t add a TON of complexity either...

    NightRogueNightRogue2 dagar sedan
  • i just realized: i get a HUGE Andy Rooney vibe off this dude. awesome 🤘🙏👍

    NightRogueNightRogue2 dagar sedan
  • 1234yf has its own downside- it's explosive.

    Jacob BurnetteJacob Burnette2 dagar sedan
  • When I lived in the Florida Panhandle, the watertable was high enough that people watered their lawns with wells. Some houses had air conditioners which interfaced with the sprinkler systems. Usually, sprinklers would run all day, spraying warm water. Some people had heat pumps. One winter we had a cold snap below freezing. The houses with heat pumps had fantastic ice formations in their lawns

    Ron MorrellRon Morrell3 dagar sedan
  • Please do a review of heat-pump clothes dryer before recommending the thing. And smell the clothes when taking it out too!

    Simon OlesenSimon Olesen3 dagar sedan
  • The Tesla Model Y uses a heat pump for AC and heating. I think Elon watched your video. 🤔

    Kato ExoKato Exo3 dagar sedan
  • Have you thought about looking into solar thermal systems?

    slyratpeonslyratpeon3 dagar sedan
  • kind of a myth that modern tumble dryers use a lot of energy... have you actually monitored it? My wife does 3-4 loads a week in electricity cost for washer and Dryer(cant separate them as on same circuit) it has cost about $4/month... since we wash with cold water this is almost our entire cost. obviously the dryer needs to be combined with a modern washer... the clothes are practically dry out of the washer. also our washer dryer is in its own room so even in the winter we open the window to give it an air source.... iv made sure that door is well sealed/insulated.

    dr3d3ddr3d3d3 dagar sedan
  • 18:54 gas is sus

    BeesAndSunshineBeesAndSunshine3 dagar sedan
  • Oh my. I disagree with you for the first time! I do hate heat pumps. Or to clarify, I hate modern heat pumps. They're overly complicated, prone to expensive breakdowns, and generally annoying to those of us unlucky enough to have to service them. Oil heat for the win!

    Jason GreekJason Greek4 dagar sedan
  • Many EVs sold in UK and Norway have heat pumps as standard equipment, but the same EVs are often sold in the US with heat pumps being an option only available on the top trim, or worse yet not available at all. The only US market EVs I know of that have heat pumps as standard equipment on all trims are Tesla Model 3 and Y. Most EV heat pumps are air source heat pumps, and some also extract heat from the power electronics, but Tesla Model 3 and Y can also use their heat pumps to heat up the battery pack for DC fast charging and then extract that heat once back on the road to cool off the battery and heat the cabin. This is accomplished with something called "octovalve". I don't know of any other EV that can use a heat pump to transfer heat in both directions between battery pack and cabin. I'd really like to see other EV manufacturers go all in on heat pumps. They're great.

    Peter EpsteinPeter Epstein4 dagar sedan
  • Can you make a vid about why central AC units freeze over? I have lived in 3 different places and it has happened at every single one!

    IdontwantyourcookieIdontwantyourcookie5 dagar sedan
  • I think climatemaster do a geothermal pump with heating, cooling *&* hot water all in one, very nice.

    Steven Robert GillSteven Robert Gill5 dagar sedan
  • My middle school uses geothermal heat

    BaconFootballBaconFootball5 dagar sedan
  • Brilliant video! But as geologist, and a pedant, only in a very small number of places could you ever hit magma if drilling down. The temperature does rise the deeper you get, but because pressure does as well you only get melting of the hot solid rock (and even the mantle below the crust is pretty much entirely solid) if there is either a significant temperature deviation, or a decrease in pressure while temperature remains constant. Hence why more 'direct' geothermal energy, not using heat pumps, is only really possible in places like Iceland, where a big plume of hotter mantle material is rising underneath the island all the way from core-mantle boundary.

    Christopher MatthewsChristopher Matthews5 dagar sedan
  • Heat pumps should be the future and should work in colder places.

    Alex PisockyAlex Pisocky5 dagar sedan
  • One thing you did not cover and perhaps should have is equipment wear. Last Tuesday I replaced the scroll compressor on a ground source heat pump that was only ten years old. Unfortunately we see major components like evaporator/condenser coils, compressors and reversing valves go out on these units after 8-12 years. This is due in part because they are used more than twice as much as your typical air conditioning system since they are also handling heat loads. Definitely neat systems, but we have found them to be prohibitively expensive to run in SW MN simply because the equipment gets worn out too quickly. My Dad's heating system is a dual ground source heat pump and the equipment has been replaced twice since he installed it in 2004.

    Reuben SahlstromReuben Sahlstrom5 dagar sedan
  • The moltent magma comment reminds me of the Geocore placements from Railroad Tycoon 2

    Tanner NicholsonTanner Nicholson5 dagar sedan
  • have you done a video on hempcreet?

    achicheezayachicheezay5 dagar sedan
  • God I love these captions so much.

    Chase GrahamChase Graham5 dagar sedan
  • I. Love. This. Channel.

    Will WWill W5 dagar sedan
  • Thermal mass refrigeration systems. I work on these everyday. We don't run out glycol underground though we're in Texas lol

    Maxwell SabinMaxwell Sabin5 dagar sedan
  • Great video but that 2.5 COP number is off. Natural gas combined cycle power plants are typically a bit over 50% efficient, topping out at 62%, while high efficiency furnaces and boilers are typically around 90%. Even ignoring renewable and nuclear energy, gas power only needs to be utilized at a COP of around 1.7-2.0 to break even on CO2 emissions. A COP of 2.5 or higher would burn significantly less gas than burning it locally.

    Alexander WoodAlexander Wood5 dagar sedan
  • Have you heard about what London is proposing? The subways get super hot due to how the trains move the air and the insulating properties of the ground, so they are attempting to use the subway tunnels as a heat source for pumps in the winter. This could be an idea for other cities as well.

    QuintusAntoniousQuintusAntonious6 dagar sedan
  • Methane systems are notoriously leaky LOL. Taco Bell or White Castle any one 🔥! The hybrid water heaters have been a bust around here one manufacture had most all fail in short order it was a bit of a embarrassment for our REMC that offered a rebate on them . The geothermal has went well with a big rebate in the form of credits on out electric bills ! They said R134 was going to be the solution ? Bet the patent is running out as it was with R12. .

    John SidersJohn Siders6 dagar sedan
  • Maybe patents shouldn't be totally invalidated, when it comes to human necessary inventions, but they should be limited to equal prices of existing less developed systems. For example, the refrigerant you spoke about, R1234YF, should be sold at the same price as the older brother of R134a This way, you do not block inventions, but you do block excessive greed. If the inventor sells it for the same price as the old refrigerant, he will sell so much more, that he will probably make the same money, but without being too greedy. Lemogan

    Joe NavoJoe Navo6 dagar sedan
    • Excessive greed is just another word for self-interest-driven capitalism, which is not something I believe should be demonized. Since we're pitching ideas, why not offer government rebates for the superior refrigerant while the patent is in effect? It's in the government's interest to reduce emissions, it's in the patent owner's interest to sell more product, and it's in the consumer's interest to buy better alternatives at affordable prices. That could be the middle ground that satisfies everyone's needs. Right?

      Chase GrahamChase Graham5 dagar sedan
  • Dig down around here you'll find permafrost.

    Richard AndersonRichard Anderson6 dagar sedan
  • Too opinionated

    Pontus BrambergPontus Bramberg6 dagar sedan
  • You've put a whole lot of emphasis on heat pumps as if this is something you want. My experience with them isn't as cost effective as one might think. I'd love to discuss my experience with them, however, I have not found any good contact info for you for a private discussion. There are nuances that you don't know about and manufacturers/installers don't talk about. I've had all kinds of heating systems from oil to natural gas to heat pumps, and based on cost, I prefer natural gas. Both heat pump systems I've used (one currently in use) use reversible compressors. Both have been terrible on efficiency. I found it cheaper to move the thermostat from heat to "Emergency" or "Auxiliary". As both of these units were older systems, not a whole lot of technology in them. To reverse a compressor, is just a change in value of a phase capacitor. My preference in cost, is natural gas. Both systems have crummy thermostats of which will engage both the compressor and auxiliary/emergency heat if the thermostat senses a need to heat more than a few degrees. Seemingly pointless and costly if heating more than 20 degrees in comparison to outside temperature. I've been told by many heating and air techs over the last 20 years, that if an A/C unit is cooling by 10 degrees, it is working. I found the same to be true for heat pumps.

    organekdorganekd6 dagar sedan
  • I was anticipating another "!!! TOO DEEP !!!" klaxon at around 25:30 😅

    OlivyayOlivyay6 dagar sedan
  • I'd also consider that when heating near the break even point in outdoor temperature, you're abusing a $2,000 compressor unit in order to preserve a cheap heat strip. No sense using the coils of a compressor as a resistive heat source. Ok it never gets that bad but you get my point. If you run a heat pump for all it's worth, an appreciable % of it's wear will come near that break even point. So I'd give it some temperature margin for longevity.

    jburdman7jburdman76 dagar sedan
  • Mmmmmm, earthy warmth!

    HotlogHotlog7 dagar sedan
  • I would love to see some legislation requiring that all AC units are reversible. As you mentioned, the cost to make them reversible is nominal, and their efficiency is amazing on mild days. (Unrelated) I own a Model Y, and the heat pump is amazing. But during those super cold days we had in Chicago this winter I experienced what happens when the cycle can't run any more. It has to send power to the motors out of phase, generating about 3.5kw of waste heat per motor. It's quite loud, and makes the car vibrate a bit. Thankfully that only happens on super cold days! It sure did eat my range though.

    Colin StalterColin Stalter7 dagar sedan
  • Passive house technology is really cool. We covered some of it in my heat transfer class and the professor showed us some of the buildings they built as test cases. EDIT1: My university also ran a district heating system on its campus to provide all hot water for heating. IIRC they used a central natural gas heater or boiler of some sort. This was pretty nice because it also made the power grid rather rugged. Even if power was lost, you generally had heat. For their newer structures (A big gym with a ton of grass field space, hmmmmm) they started installing geothermal. EDIT2: Invalidating patents is often a terrible idea and will do more to stifle inventions. The presence of a patent on a new technology that is "revolutionary" spurs on other companies to develop their own version without utilizing the patents of the original, creating more technological advancement. There is a precedent which was set during WWII where the US Government required patent-holding companies to allow other companies to make use of their patents with a royalty agreed upon by the US Government. This had stipulations though that the produced goods had to be something purchased by the Government.

    LoneGhostOneLoneGhostOne7 dagar sedan
    • This situation would be a good compromise as the original inventor gets to not only still make-up their original cost, they also get to do it faster, and potentially without even making said product themselves. This would free up the ability for more companies to then innovate on top of the patent to improve upon the designs.

      LoneGhostOneLoneGhostOne7 dagar sedan
  • Damn, this makes me wish I could ever afford to buy a home. I'd love to have all this stuff!

    Vistico93Vistico937 dagar sedan
  • My father-in-law put in Geo Thermal in the house he built 18 years ago and always raves about it to me.

    Zenkai76Zenkai767 dagar sedan
  • Highlights: 8:21 ᵘˢᵘᵃˡˡʸ 21:46 25:53

    Mr. VitalisMr. Vitalis7 dagar sedan
  • Was that an Ellen's Energy Adventure callback I heard in there?

    photogineerphotogineer7 dagar sedan
  • "Engineers are smart!" -TC Guy, 2020

    Maniac3020Maniac30207 dagar sedan
  • I'm definitely the kind of person who loves laughing out loud at videos about the complicated inner workings of heat pumps

    RhythmicityRhythmicity8 dagar sedan
  • we really need more investment into electric generation of LPG and gasoline. Then we can go full renewable on the front end, and retain existing use modes. Because heat pumps failing when cold means we need LPG....

    flow inflow in8 dagar sedan
  • You were bringing up patents and how you think that patents that would benefit us in slowing and reversing climate change should be invalidated. Fun fact: the current worldwide patent classification system has a whole category for those technologies: Class Y02. So, that ain't going anywhere unfortunately.

    David CincirukDavid Cinciruk8 dagar sedan
  • patents = horse shit..... Worst thing ever... Glad they're not international and our friends the Chinese can ignore them

    Hugh FraterHugh Frater8 dagar sedan
  • R1234yf seems to only be in use in automobiles, does @technologyconnections know when it will be available for home cooling?

    Michael FMichael F8 dagar sedan
  • 11:21 No man, this is not possible. A heat pump powered by gas cannot transfer more energy against its gradient than is contained in the gas. If it was then you could hook up the output of a heat pump to the input of a heat engine and use that to drive a generator for infinite power. Electricity is generated when energy moves down it's gradient (Think water in a dam driving a turbine as the water falls to a river down below. ). You cannot use that energy to then create a greater gradient else where. This would be like using the energy from our dam to pump more water into a different dam at the same height.... You could just make a loop of dams and generators for infinite energy.

    Cinch MCCinch MC8 dagar sedan
    • @Elin Unfortunately it is more complicated than that. We are not simply moving energy from one spot to another, we are moving it against the direction it wants to go. We are taking heat energy from a cold place and pumping it to a hot place. We are creating a difference in the concentration of thermal energy between the inside of the house and the outside. This is the reverse of the process used to create the electricity at the power plant. There they create hot, high pressure gas by burning natural gas and allow the heat and pressure to move to an area that is cold and low pressure. In the process they extract energy for making electricity. It is not possible to use one energy gradient to create a larger energy gradient some place else as he seems to be implying.

      Cinch MCCinch MC8 dagar sedan
    • Isnt that the whole point of a heat pump? You take energy from somewhere and put it somewhere else, and the process of moving said energy takes less energy than you moved. You're not creating free energy, you're just taking it from somewhere else right? So yes you could heat up a home more than the raw chemical energy contained in the gas, since you're not actually using that energy to heat up anything, you're just stealing that heat from somewhere else using that energy.

      ElinElin8 dagar sedan
  • I've just been binge watching yours videos, I just want to say thank you for making this content, I've got a smaller SEworld channel & I now understand how annoying it is to be stuck to a video schedual. You are awesome cool dude! I wish you a long life filled with joy!

    Level UpLevel Up8 dagar sedan
  • Firewood is the answer. A tree scrubs the atmosphere to a higher degree while alive, than the carbon emitted while it rots or is converted to another form of energy.

    CotronixcoCotronixco8 dagar sedan
  • Same principle could be used to cool homes in Summers in temperate regions

    Ashutosh PandeyAshutosh Pandey8 dagar sedan
  • I have a heat pump clothes dryer!

    Nick NNick N8 dagar sedan
  • Here in Florida its pretty much standard to have a/c units with heat pump capability. I just had a new system installed, a/c plus heat pump, plus heater strips. Great system, $3300 installed for compressor and air handler (410a)..

    radzewiczradzewicz8 dagar sedan
  • Ductless AC's will do heating and they are *great*. I have had them for many years. They weren't allowed for economic protectionist reasons until recently...

    エビGrilled FlatfishエビGrilled Flatfish8 dagar sedan
  • Slightly unrelated rant at YT: I just realized I haven't been getting your videos in my recommendeds. I came to check on your channel today because it's been a little bit since I saw you in my feed, only to find out you've uploaded 3 times since the last video I saw and I had no idea. I hate the way YT's algorithm works because as an avid YT watcher, there are many channels I interact with, but unless I fervently interact with all of them as much as humanly possible, I don't really get a well curated sampling of what I like to watch. Usually it will cull down the recommendations to only those few channels that I happen to have interacted with in the last week, removing the existence of literally anything else from my feed. For example, I binge-watched some videos from a popular artist YTer a couple days ago, and now every other video on my recommended feed is one of his. I like his content, obviously, but that's a little much. I'd like to see some of the other channels I enjoy popping up in there too. I have a long history of watching said other channels that goes far beyond the last week, after all. Just because I haven't seen their stuff in the most recent past doesn't mean they're dead to me in terms of my interest! In any case, just dinged that little bell so that I'll know when you upload from now on, but what I wouldn't give for YT to improve it's algorithm altogether.

    Ceres AzaliaCeres Azalia8 dagar sedan
  • There were so many excellent points in this video, I'm gonna have to watch it multiple times. The concept of invalidating patents is the kind of attitude we need. "All hands on deck", use whatever we can ASAP.

    Ruben QuackRuben Quack9 dagar sedan
  • Back when I had a Mac laptop, on cold days, I'd just do stuff on my laptop and the laptop would get SO HOT that I could use it to warm me up. Also I've turned on and held incandescent light bulbs to warm my hands, and nowadays a gaming console does the trick if it's nearby. The heat that comes out of those things is how I imagine a hair dryer feels on its lowest setting. Sitting in the car is also very effective (It works like a solar oven). Somebody once had the idea that we could be using computers as heaters while they just crunched numbers for scientific projects that required tons of calculating. I feel like that's the real solution because it's for a good cause and the heat would otherwise be treated like waste when we actually need it.

    John SmithJohn Smith9 dagar sedan
  • I'm brazilian and I find it amusing that american ACs aren't reversible. I'm in my 20's and every single unit here I have ever seen is revesible. Also most homes here use electric shower heads instead of having a heated water tank. Say what you want about them but modern ones are f***ing amanzing.

    whatthereqwhatthereq9 dagar sedan
  • You should do a video about o3waterworks!

    Mitchell RuscinMitchell Ruscin9 dagar sedan
  • Oh wow, nowdays we use the ,,zippy zappy'' way of power transmission so extensively.

    Jakab GergőJakab Gergő9 dagar sedan
  • Just got my new $1500 Whirlpool heat pump dryer thanks to this video. With 12 KW of solar, electric car, and other energy saving appliances We are inching closer to being a carbon neutral family.

    Alex CourtneyAlex Courtney9 dagar sedan
  • so, My air con remote has died. Its been bodged so many times, and I only use it on the odd really hot day (> 35c, I work in a tin shed, im ok with being hot). I wonder if i can hack the AC to ground source... i mean, if i need to rewire it anyway....

    arjovenziaarjovenzia9 dagar sedan
  • I would vote for you if you ran for office.

    Gabe BronsonGabe Bronson9 dagar sedan
  • Honestly kinda weird we aren't sticking the source tubes under roads whenever we build them. We're gonna dig deep into the ground for their foundation anyway, and imagine being able to make sure the road only freezes once and thaws once per year instead of like 20 of each each spring and autumn.

    junogutenjunoguten9 dagar sedan
  • So most towns and big cities are near some big river. If that was used as the heat pump source during winter to heat all those buildings, do you reckon they'd freeze it immediately, or would there be enough heat there?

    junogutenjunoguten9 dagar sedan
  • So when we're considering saving power from summer til winter, why are we making electricity with PV instead of concentrating the heat with those mirror and water pipe thingies and storing that away in some big tank somewhere coated in 10 meters of rockwool to be distributed to heatpumps near you in the winter?

    junogutenjunoguten9 dagar sedan
  • Heat pump clothes driers are many times also closed loop devices. We have one Siemens unit where the circulation is simple, cold coil -> hot coil -> drum -> cold coil etc.. Water condenses to cold coil and goes down to drain and hot coil heats the air again. Same air just circulates round and round. At the end there is slightly warm (100F or so) air that is reeeally dry circulating and drying happens quite fast. Only air circulation to room is simple fan that cools down the compressor unit but none of the actual dryer air is vented. Downside is that dust collects over time to cold coil as filters leak slightly, I had to pull the whole thing apart to be able to clean the cold coil fins. Of course the coils are below the drum on dryer base inside the air canal as it should have "automatic cleaning" which means that condensed water is poured over of the cold coil few times during drying cycle, but in first 9 years it actually blocked the cold coil airflow and drying time was getting extremely long. After cleaning the fins with compressed air to counterairflow direction the thing runs good as new. Compressor and rotation motor/fan has combined power of approx 900 Watts and one drum full of clothes takes about 1.5 hours to dry so drying the whole batch eats less than 1.5 kWh.

    KarjisKarjis9 dagar sedan
  • Actually big apartment block CAN get enough heat from one hole. That hole just need to be over half a mile deep. Not just research, in production already.

    KarjisKarjis9 dagar sedan
  • #TechnologyConnections4President

    Steven AlpertSteven Alpert9 dagar sedan
  • Me watching for the moment Alec just finally says "it's capitalism. the problem with all the things is capitalism": 👀

    LuciannaLucianna9 dagar sedan
  • Why can't you just dig a deep trench and put the spool of tubing in sideways in the bottom 3 feet or so of it, and backfill it? It would do the same job with far, FAR less excavating. The heat transfer would then be horizontal instead of vertical, but just about the same amount.

    Mike WarotMike Warot9 dagar sedan
  • Geothermal isn't a magic solution, you will eventually heat up the earth your looped is placed in and you will not get any more heat. The trouble is the earth/rock has poor heat conductivity.

    StinkPickle4000StinkPickle400010 dagar sedan
  • There are commercial buildings, in a downtown, utilizing borehole and heat pumps.

    StinkPickle4000StinkPickle400010 dagar sedan
  • Could a house that uses heated floors work with a heat pump though?

    My Username Is Also BortMy Username Is Also Bort10 dagar sedan
  • Heat pump clothes dryers suck compared to "normal" dryers, at least my European one does.

    isupossisuposs10 dagar sedan
  • My ground loop goes below freezing despite being 6ft or more below the surface, the combination of -20/-40F and lack of moisture in a semi arid climate meaning heat conductivity is limited, but methanol and other additives mean it still works fine.

    Steevo69Steevo6910 dagar sedan
  • [rude raspberry] The subtitles are fantastic!

    Rémi CardonaRémi Cardona10 dagar sedan
  • My condo uses a closed-loop water source heat pump... it uses a really terrible line voltage mechanical thermostat I'm getting replaced with a modern digital one.

    MattMatt10 dagar sedan
  • Our water heater is a hybrid one. We run it on heat pump most of the time. And because it's in the garage, it actually makes a great air conditioner for the garage in the summer. Especially since our garage door is insulated. I can actually just use my garage as if it's another part of the house. However, in the winter it gets hella cold in there.

    steevfsteevf10 dagar sedan
  • lifehack: if you put your house under ground you don't even have to pump the heat to the surface.

    holden⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻holden⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻10 dagar sedan