Heat Pumps: the Future of Home Heating

  • Zverejnené Pred mesiacom

    Technology Connections

    trvanie: 35:15

    It's so cold that it's hot.
    Part 2: svheat.info/the/video/bLLW3l6Xk9itjqk
    I referenced a lot of old videos in this one. Here they are, in clickity linkity form!
    Chest Freezers; What they tell us about designing for X
    svheat.info/the/video/eH-lzoiczLDNgX8
    Old-fashioned rice cookers are extremely clever
    svheat.info/the/video/h4u4tJmrpazDkn8
    Reusable handwarmers that get hot by freezing
    svheat.info/the/video/hKKU1p2szsSvhqk
    I also made passing references to
    Forced-air Furnaces: The What, Why, and How
    svheat.info/the/video/oXq63J95x7yTkaU
    and
    Portable Air Conditioners - Why you shouldn't like them
    svheat.info/the/video/lGXRqJaOpJesgJk

    Technology Connextras (the second channel that stuff goes on sometimes):
    svheat.info/start/lRwC5Vc8HrB6vGx6Ti-lhA
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    www.reddit.com/r/technologyconnections
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Technology Connections
Technology Connections

Hello! Here's a comment with some extra info on efficiency and the metering devices used in heat pumps. First: my wording on the efficiency drop in the cold was sloppy, and it sounds like I'm suggesting the need for defrosting is the only reason it loses efficiency. It is _a_ reason, but not the biggest one - that's simply that as the outdoor temperature gets colder, it's harder for the refrigerant to absorb heat because the temperature difference between it and the air gets smaller. In fact, in the clip when it was -10°, it wasn't building much frost at all because it was very dry. But that was so cold that the refrigerant could barely capture any energy, which is why its output was tepid. And to be clear, its rating down to 5° doesn't mean it operates at full efficiency at that temperature. That's just the lowest temperature that it can sustain its rated heating output. Re: metering devices. I still somewhat suspect that the mini-split has a capillary tube and largely because of its cost. It was surprisingly inexpensive (this unit was about $1000, but the smallest units from this same manufacture only cost $750 and are fully capable heat pumps). If you use a thermal expansion valve or similar, you need one for each direction which adds to the system's complexity somewhat. I'd still argue that it hardly does - it is, after all, one or two small components of a large system. But simply reversing the refrigerant flow doesn't work on its own in systems that use these more complex metering devices. They'd need some additional piping and valve work (some such valves were visible in the demo rig) to accommodate two metering devices for each direction of flow.

Pred mesiacom
Jason Dolph
Jason Dolph

I was super surprised when I first moved to Japan and EVERY air conditioner was also a heater.

Pred 16 dňami
LTVA
LTVA

@melskunk central heating is a big system where water is heated by power plant or similar building that is built specifically for it. Then this water travels via pipes to houses and goes through radiators, cooling down and heating up rooms.

Pred 19 dňami
melskunk
melskunk

@LTVA wait what is the difference between a furnace and central heating? We call our home furnace our central heating

Pred 19 dňami
Ethan Nichols
Ethan Nichols

Could you turn a window AC to be outside and heat your house or room technically?

Pred 19 dňami
汪波
汪波

Our company It is a scientific and technological enterprise specializing in the R & D, production, sales and service of solar energy, air source heat pump hot water, heating and refrigeration engineering systems. It is the development and cooperation unit of Zhejiang Energy Research Institute - new energy source. The company won the title of Hangzhou high-tech enterprise in 2010 and ultra-low in 2011 The warm air source heat pump unit project won the national science and technology small and medium-sized enterprise innovation fund project award, and won the new industrial product award of Zhejiang Province. Also we want to find some partners or agents,If you are interested, we can communicate this matter。my e-mail: fexur@foxmail.com

Pred 20 dňami
Wallace Grommet
Wallace Grommet

Is trans critical C02 technology available on domestic heat pumps?

Pred 2 hodinami
Martijn van Paassen
Martijn van Paassen

Nice video, good explanation! Just FYI, there is another, newer source for the heatpump with even higher SCOP's. It's called PVT, which is an solar pv panel with an thermal part for generating heat as well as electricity. The thermal part is a big heat exchanger which no fans or moving parts, so no noise. The thermal part acts as a source for a brine heatpump, like an ground source. In Europe, its pretty expansive to dig into the ground, so ground heatpump work really well but the investment is too high. Therefore we've developed what we call the Qpanel. A pv panel which generates electricity as well as heat. Addiotional bonus: higher electrical effenciency due to the cooling of the PV panel. Curious? Google Qsilence PVT and view our live system.

Pred 22 hodinami
LinkinPark4Ever1996
LinkinPark4Ever1996

Shut up and take my money

Pred 2 dňami
Rust Is NOT a Crime
Rust Is NOT a Crime

Just something else we will have to pay more for that won't work as well .

Pred 2 dňami
Wes T
Wes T

Thermodynamics you so crazy. Always flowin' and shit.

Pred 2 dňami
craigmcfly
craigmcfly

I watched this one after https://www.youtube.com/watch?v=ZArBfxaPzD8 so now I get the latent heat and the refrigeration cycle that I was denied!

Pred 2 dňami
DanCanRV2
DanCanRV2

Good job !!!

Pred 2 dňami
Bjarne McDonald
Bjarne McDonald

You shoud do an "air to water" heatpump episode. We have a outside unit like yours and it makes warm water for floor heating. Absolutly the most comforble heating in cold climates.

Pred 2 dňami
Wayne's World
Wayne's World

I've been thinking for years, that a centralised heating/cooling system for all devices in a building could be very efficient. ie. Fridge/Freezer, Hot water, Oven, AC etc. Where one device needs heat, another needs cooling, so the energy is moved around rather than wasted to the outside. Of course a sufficiently sized unit outside to make up the slack. This means gas fittings everywhere though.

Pred 3 dňami
j
j

I cant believe that people in the US don't know about these things 🤯

Pred 3 dňami
László Lichtenstein
László Lichtenstein

What about portable air conditioners as heat pumps?

Pred 3 dňami
Kyle
Kyle

I simply can not wrap my head around how the the refrigeration cycle works.

Pred 4 dňami
Ryan Srichai
Ryan Srichai

I feel you. My dad is a refrigeration engineer and he's tried to explain the refrigeration cycle to me multiple times and I still don't get it

Pred 13 hodinami
Jonathan Averill
Jonathan Averill

So you’re saying I just turn my window A/C units backwards

Pred 4 dňami
notfiveo
notfiveo

What you will notice is that in a high humidity environment, the indoor blower fan will accumulate a lot of mold which affects the balance of the indoor fan wheel. When that happens you have to remove the squirrel cage fan and clean it which is a huge PITA. So I also run a dehumidifier which keeps the mold down.

Pred 4 dňami
Rad Matic
Rad Matic

Gas heating makes more sense. We have plenty of gas. The climate cult is crap.

Pred 4 dňami
achicheezay
achicheezay

very good video but it was just like bla bla bla as my brain was being fried im going to have to watch it a few times to make snese of it :)

Pred 5 dňami
repeatman
repeatman

Well, since this video.i found out my garbage picked portable a/c works Fantastic as a heat pump! All i did was reverse the exhaust hose to the output of the evaporator.

Pred 5 dňami
Waylon Levins
Waylon Levins

Great video as always. You understand the refrigeration process better than most HVAC technicians. First a slight correction on the metering device in your mini split, it is most likely a Capillary tube actually but it is located in the outdoor unit. This is why that in the summer the small refrigerant line will be cool to the touch in cooling mode, not like a traditional liquid line on your AC condensed unit. That’s also why both refrigerant lines are insulated to prevent condensation damage. It sounds like the system you want is what we call a dual fuel set up. Expensive, but provides the best heating solution.

Pred 6 dňami
Alejandro Barajas
Alejandro Barajas

Isn't the problem of extreme temperature effects in houses in the US a result of most houses being built out of wood and drywall...? Wouldn't it be better to build your houses out of brick and concrete...?

Pred 6 dňami
Anna Dutton
Anna Dutton

Dude it’s summer time 👎🏻

Pred 7 dňami
MrOnosa
MrOnosa

I just had a friend ask me if he had a heat pump. He's selling his home and filling out a questionnaire. Oh man did he come to the right person for such a specific question...

Pred 7 dňami
Patrick Pat
Patrick Pat

I love my now one year old heat pump. But I know its not going to be trouble free for more than a decade like my gas furnace and window/in wall air conditioners have been. Not looking forward to replacing the compressor and evacuating and recharging it. Hope it lasts at least 5 years.

Pred 7 dňami
SmilesAreDaggers
SmilesAreDaggers

YES! so much good well explained science in this!

Pred 8 dňami
Nova
Nova

Heatpumps are being build here in the new homes, now I know how they work. Which is cool to know :D

Pred 8 dňami
Natural Healing
Natural Healing

But heat pumps use electricity which is much more expensive per unit than natural gas, so even though they use less energy, they cost more to use for heat.

Pred 9 dňami
Robert R
Robert R

My only confusion on this video is his emphasis that heat pumps aren't well known in the US. I live in Ohio, and most people I know have a heat pump. Is this really something most Americans don't know about? Other than that, excellent video!

Pred 9 dňami
Andrew F Tutor
Andrew F Tutor

Oh my science!

Pred 9 dňami
Heather Jennifer
Heather Jennifer

Heat pumps have been around for a while they just suck a lot of power. One of my favorite devices, happens to be a camper fridge, the ones that run on propane or electric, ac, or dc. Basically there's no compressor, I think the freon is ammonia based, but all you have to do is just heat up this canister in the back of it. As you heat the canister in the back, it creates cold inside the fridge. That means you could literally light a wood fire behind this thing, and it'd get cold. That's how they get away with making it run on propane, the propane will heat the tank, they have a water heater type element around it, that will heat it with 120 volt AC, and they have a 12 volt element, that will also heat it with 12 volt.

Pred 9 dňami
Egastap
Egastap

Hmmm....I used to have one. Granted it was a few years ago though. If it got below 2 degrees C the heat was useless. Living in Canada we had 4 months of cold and the pump was a waste of energy. Unless they've changed the efficiency of newer models I would never bother with one.

Pred 9 dňami
wolfos atar
wolfos atar

You have no idea how much joy your videos bring me.

Pred 10 dňami
Kamlin Kilgroe
Kamlin Kilgroe

very nicely done video. however, as the current technolgy goes, an air to air heat pump only makes sense in a mild climate. THEY CANNOT HANDLE BITTER COLD. FORGET IT. ground source heat pumps are a good optiion in the far north, i bet. i hope. MOTHER NATURE ALWAYS SAYS "NO". things may improve, as technology advances. SLOWLY. lets be really careful not to be idealidtic. WE HAVE NOT YET ESCAPED THE NEED FOR FOSSILE FUELS IN COLD CLIMATES. be real. be honest. thx this video is a wonderful science lesson and im grateful. cheers!

Pred 10 dňami
Joy
Joy

---!!! it's like how plant roots absorb nutrients---!!!!!!

Pred 10 dňami
Rev_dude
Rev_dude

So its an LED traffic light?

Pred 10 dňami
Past'uh
Past'uh

heat pumps really suck, Especially those mini splits. they dont do either heat or cool to well, they just exist. as a service tech I run into customers who have nothing good to say about heat pumps everytime.

Pred 10 dňami
BigBad John
BigBad John

Hum, well why don't you run the back up strip heat in defrost and there won't be any cold air coming out after defrost.

Pred 10 dňami
Apollo
Apollo

Great video brother! Quick note on 14:59 - The metering device on a MS is usually a capillary tube unless it’s more efficient and then you would have a thermal expansion valve of some kind or electronic expansion valve. However they are not located in the indoor unit they are actually located outside on most occasions.

Pred 11 dňami
O!Technology
O!Technology

As far as I know the metering device in minisplits are in the outdoor unit.

Pred 11 dňami
lostc0z
lostc0z

Would you be willing to expirement using a generator for the power source and use a heat pump window unit vs a quartz infrared space heater and show us the results?

Pred 12 dňami
Nicholas Jones
Nicholas Jones

Haha dope B roll hahaha

Pred 12 dňami
lostc0z
lostc0z

It sounds like you're saying that a heat pump produces a over-unity for heating. Are you saying that the power plant miles away burning natural gas is more efficient than heating with a fireplace or natural gas furnace on site. Isn't their loss in powerlines and conversion losses from burning gas to boil water to turn a turbine heck they have to pump the water to boil how much energy was used for that? A gas furnace is using a blower motor for it's electric needs but a heat pump is using that plus a compressor several sensors and electronics. Let me tell you what savings you'll have with a heat pump water heater. None. Upfront cost - High, Plumber - High, + now you need a HVAC Tech - High, It affects your homes heating system costing you more, needs a drain for condensation. It falls into regular resistance heating with heavy usage or everytime it needs service and Techs are so expensive no one gets it serviced so shame on owners for not maintaining it. It works on paper not in reality. High Maintenance costs are the problem with technology and only the rich enjoy these impractical clown engineered devices. Most improvements in vehicle fuel efficiency came from weight reduction and turbochargers. A drop of fuel will always contain the same amount of power as it did 50 years ago and probably 50 years from now.

Pred 12 dňami
B00rish
B00rish

147 degrees C out of an air con unit inside the house'? could fry food on that o.O lived and worked in Greece for 5 years previously, all air con out there (UK origin, no aircon), pretty sure around 30 was normal on the units?

Pred 13 dňami
SmoothMechanic
SmoothMechanic

I’ll just grab some uranium for heat.

Pred 13 dňami
DAN8137
DAN8137

I have 2 indoor units and 1 outdoor. What happens when I set one of my indoor to heating and one to cooling?

Pred 14 dňami
Freddo Flintstono
Freddo Flintstono

Heck, I had reversible ones in Malta. That gets never below zero as a result of a very large moat (it's an island), but when it's 10ºC outside you're very happy they cam reverse their summertime job (where it can go from 23ºC night time to > 35ºC as soon as the sun goes up).. Nice article, and sensible logic. Thanks for this.

Pred 14 dňami
Kenneth Kossan
Kenneth Kossan

Wehad one in Minnesota in the seventies already..

Pred 14 dňami
Sergeant
Sergeant

A CoP of 2.9 in ideal, test conditions? So a CoP of 1.0 at home if you're lucky.

Pred 14 dňami
Artur H
Artur H

In the book of Isaac Asimov foundation, the planet Trentor was heated like that. He wrote it in the Nineteen fifties.

Pred 14 dňami
frank rizzo
frank rizzo

Just an FYI about GSHP in urban areas. St. Patrick's Cathedral in NYC has installed a huge Ground Source Heat Pump System to provide ALL heating and cooling . The Abbey in Bath, England has also installed a Ground Source Heat Pump plant. Your information about Ground Source Heat Pump installs are not accurate!

Pred 15 dňami
NightChime
NightChime

"Not rated for under 5 degrees." So, perfect for me here, in California, but this is still news to me!

Pred 15 dňami
Jami Blankenship
Jami Blankenship

I can say with all honesty, if you are in a part of the state that does sometimes, even rarely, get a cold snap have a backup heat source available. My family had mini-splits in our apartment in south-central Pennsylvania. Not an area of this state known for the type of cold and snow you see along Lake Erie or towards Pittsburgh or State College. But for those few days in the winter when the temperature would start hanging out perpetually in the 20's the units did almost nothing. If the temperature got below 15 they stopped working completely. We ended up supplementing the heat with an electric fireplace that doubled as an entertainment center.

Pred 12 dňami
Brad Ryan
Brad Ryan

Future? I’ve had a heat pump since 1986

Pred 15 dňami
Ergzay
Ergzay

-8C is kind of too warm for most environments in the US. It gets much colder than that in winter.

Pred 15 dňami
WASH WOMEN 777
WASH WOMEN 777

Let me tell you something the new world order for a 100 years now have been making people believe they need sticks and bricks, know you need dirt you need the dirt to keep you warm you need the dirt to keep you cool , look up Michael Reynolds look up earthships, look up straw bale homes it look up. The truth green is the earth.

Pred 15 dňami
William Richard James Nicholson
William Richard James Nicholson

You're a bit behind the curve on this since heat pumps have only been used for about 50 years now ! ! To present this as if it is recent development is ridiculous. Only a dolt would believe this is a notable subject. What next , are you going to tell us the new development of blending color of exterior machine unit to building color by using spray paint on their cabinets ? ? I have unit hidden by blending green spray painted exterior unit to match the green of the hedge that surrounds the perimeter. Entire house looks better this way . Is that also an item to make another useless video about ? Lose some weight , go get outside & do something useful without the need to bother anyone else .

Pred 15 dňami
Car Parking Multiplayer
Car Parking Multiplayer

This would be amazing in the uk! Why is nobody talking about this? This would be a big hit with newly built homes, since here it’s rarely freezing but heating is almost always required!

Pred 15 dňami
Vykintas
Vykintas

Somehow the UK is always very late to adopt new building technologies- it seems that double glazing is still a new thing there! When I lived in Scotland, a local architect, who lived in Germany for a while in the 90s, was furious while telling me how British architects and builders are still building traditional looking houses with single glazing and hardly any heat insulation, and thus the occupants of these houses then have to turn up their gas heating high to stay warm. It's a good thing gas is cheap in the UK, but it won't be like that forever :/

Pred 14 dňami
WantEpicMusic
WantEpicMusic

My dad is an electrician and refrigeration mechanic here in Australia, so I knew about reverse-cycle air conditioning from a broad overlook perspective, but this video went into a bunch of detail that I love! Thanks for being my favourite tech nerd youtuber!

Pred 15 dňami
Mahmoud Ezz
Mahmoud Ezz

I absolutely love how educational your videos are and your angle on things but please work on making the videos shorter or a bit more energetic as it's not easy watching the entire video despite my interest in the topic May you always have more success

Pred 15 dňami
Michael Naso
Michael Naso

boy he loves refrigeration

Pred 15 dňami
Marcin Kościelny
Marcin Kościelny

Here in EU heat pumps are popular, especially with solar heat and electricity, as they allow you to scale down photovoltaic installation. You get quicker return on investment if you combine these three. Not to mention the reduction of emissions, which will be huge even if you rely on coal power. During the coldest days just run your cryptominer to keep you warm ;)

Pred 16 dňami
Davit prtterson
Davit prtterson

The plucky cub partially carve because zone successively interest apropos a tricky mice. unable, anxious glockenspiel

Pred 16 dňami
Quixote
Quixote

"Reverse the polarity of the refrigerant flow!"

Pred 16 dňami
Munk Puppy
Munk Puppy

my parents live in southern Canada, and they also have a heat pump that works quite well. They are really efficient!

Pred 16 dňami
James Jin
James Jin

stronger pipes & valves with better coolants would allow this to work more efficiently in extreme weather conditions

Pred 16 dňami
-
-

He's right, every winter I turn my window A/C unit around so the cold blows outside and the hot side is in my apartment.

Pred 16 dňami
JetpackDino
JetpackDino

This reminds me of a really cold day from school. I live in Australia, so we only used the ac to cool a room. So in this scenario, no one even thought to turn the ac on. A few teachers started bringing heaters in before someone said something lol.

Pred 16 dňami
Rob Schofield
Rob Schofield

That's about the clearest explanation of this subject I've heard. A very good video indeed!

Pred 17 dňami
Caleb Reetz
Caleb Reetz

Hey! I know exactly were that is! Went to school at FRCC!

Pred 17 dňami
Simon Munch
Simon Munch

how much did Pepsi give Pioneer to include there logo ;)

Pred 17 dňami
Sophie Robinson
Sophie Robinson

Mini-splits.

Pred 17 dňami
Lolan
Lolan

Rip the average winter day for me is -26c. Warm days are -17c cold days are -50c

Pred 17 dňami
MediaMatters IsMyCockHolster
MediaMatters IsMyCockHolster

The Texas Big Freeze of 2020: I know of a large company that replaced their Propane based HVAC system with a heat pump system that was all electric, and guess which one failed, because Heat Pumps lose efficiency as the temperature drops? Sure, you can get add on electric elements for heat in the system, which works great, right up until either A) the power bill gets jacked up thousands of dollars, or B) the power goes out or into rolling blackouts, and regardless, you are still a slave to an electrical utility, and with the likely potential of higher bills even when working within 'normal' temps, or a blackout whenever they need it. With propane or natural gas, it's easier to run minimal systems with a backup generator of some sort. One of the owners who approved purchasing this technological trainwreck stated that they had researched it first.. on Youtube.

Pred 17 dňami
Stormspark
Stormspark

I'm getting a Tesla Model 3 soon-ish (month to a month and a half or so). And...guess what it has! The AC in the car is a reversible heat pump.

Pred 17 dňami
Ian Benavides
Ian Benavides

This connection of videos makes all of this science make more sense!

Pred 17 dňami
Marcin Dżamroga
Marcin Dżamroga

Teletext video?

Pred 17 dňami
lollopingnoob
lollopingnoob

My family recently built a house - as in in the last year - and we got an air source heat pump. Shits crazy

Pred 17 dňami
Ed Aten
Ed Aten

Why don’t carbonated beverages cool themselves as they decarbonate?

Pred 18 dňami
Rolph Finkin
Rolph Finkin

Your audio is decent, but please run it through the "de-esser" in audacity to kill some of that sharpness in your "s" sounds. When I turn volume up, there are major volume spikes on your s's and it's almost painful when the rest of the vocals are just nice and audible, not 'too' loud.

Pred 18 dňami
Axe 001
Axe 001

"What if I were to tell you that all of the energy you need to heat your home on a cold winter day could be found.. outside?" Me:Bullsh*t.

Pred 18 dňami
George Loyie
George Loyie

As a payer of ridiculously high heating bills in Canada, this really caught my eye! So I googled it a bit... Here's what I got: For climates with moderate heating and cooling needs, heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Like your refrigerator, heat pumps use electricity to move heat from a cool space to a warm space, making the cool space cooler and the warm space warmer. (As cold as it gets here, well it gets just as hot in the summer, not very moderate) Drawbacks of air-to-air heat pumps are: regular maintenance is required (cleaning the filter on the indoor unit) and a service check every 2–3 years. loss of efficiency as temperature decreases below 6–7ºC (but some models can still provide heating in temperatures down to -15ºC) (So in Canada, where winter temps get as low as -40C, this will require either another unit, or wood heat to take up the slack.) How much will my electric bill go up with a heat pump? $50 to $100 per month. (So I guess I won't be buying one, shucks!) Heat Pumps will raise your electricity bill – but lower your costs for other heating fuels. Each single unit (often referred to as a one-to-one) heat pump that is used daily will increase your electricity bill by $50 to $100 per month.

Pred 18 dňami
Withnail1969
Withnail1969

What a load of mumbo jumbo. It's against reason to think you could efficiently warm up your home with air that's a lot colder than the air indoors. Can't possibly work without using loads of electricity. It is most certainly not going to be more energy efficient than just burning gas onsite to fuel central heating.

Pred 18 dňami
betaneptune
betaneptune

Nice video. Less repetitive than others. But temperature is not the "concentration of energy." You can have boiling water, with the liquid and gas phases at 212 deg. F. Both are at the same temperature, but the concentration of energy is much higher in the liquid.

Pred 18 dňami
BlackSmokeDMax
BlackSmokeDMax

Any idea of the efficiency of that similar outside unit north of you? Next time i have to replace mine is certainly love to consider the option.

Pred 18 dňami
Ken Mason
Ken Mason

Okay I know you're all talking and stuff but I'm diggin' that sport jacket yes...yes, it's rather snazzy. A big huge gaudy yellow gold ring on your little finger . That's all that jacket needs. Come on. You know I'm right. A good CHUNK of gold, HEAVY. A ring that says stuff. Yes. A ring that makes people say "What the HELL man!?"

Pred 18 dňami
George H
George H

2:11 I love the dubbing. I have seen movies with worse dubbing. "'Yippee Ki-Yay, Mr. Falcon" (done for American TV censorship, but some dubbing in theatrical releases was bad too)

Pred 18 dňami
True River
True River

3:00 Welcome back to your chest freezer; star of an earlier video :)

Pred 18 dňami
hwd71
hwd71

So its like a portable air conditioner which blows the hot exhaust air inside instead of out the window?

Pred 19 dňami
Rodrigo Madera
Rodrigo Madera

Incredible content, as usual. It’s rare to find such production quality filled with solid engineering knowledge. Definitely one of my favorites on YT.

Pred 19 dňami
Tom Turnbull
Tom Turnbull

We have heat pumps in the UK. I used to work for a company that installed them underground.

Pred 19 dňami
OlTrailDog
OlTrailDog

In western MT I heat my 30x40 well insulated home with one of these heat pumps except for when it gets below around 5*F. I don't bother to use the air conditioning cycle in the summer as I just open the windows in the early morning and close up the home during the hot part of the day.

Pred 19 dňami
PauleraBR
PauleraBR

Incredible, you managed to make me understand this. Wow, that is quite an accomplishment, thank you.

Pred 19 dňami
Darius Varno
Darius Varno

meanwhile i'm watching this video with an axe near a pile of wood :))))

Pred 19 dňami
edgeeffect
edgeeffect

Why has no one made a refrigeration system and named it "Maxwell's Daemon" ???

Pred 19 dňami
Lucky 13
Lucky 13

"Air conditioning has been standard in American homes for over 50 years." You are showing your privilege, here, son. Make that 30 years, and you would be correct.

Pred 19 dňami
Ce1es
Ce1es

ok, so does this mean when Tesla announced they put a heat pump into their Model 3 that they just added that little reverse valve and piping thingie? Because the rest was already there being the A/C system that comes as standard in basically every modern car. [edit] that's exactly what you point out in the next one, nice :) [/edit] Also the fact that this system can have an energy efficiency above 100% blew my mind.

Pred 19 dňami
Matthew Byrd
Matthew Byrd

The “future of home heating”? Really? Heat pumps have been around for a long time.

Pred 19 dňami
adaptiveplexus
adaptiveplexus

I thought you lived in Orlando FL, I guess you moved up north

Pred 19 dňami
muten861
muten861

What you propose is in Europe standard. MURICA f###k yeah!!

Pred 19 dňami
IronLion219
IronLion219

This is an awful explanation of refrigeration.

Pred 19 dňami
Dunwell
Dunwell

I had no idea I was interested in this stuff. Maybe I should go into the HVAC trade.

Pred 19 dňami
Steve Larsen
Steve Larsen

What FLIR camera are you using?

Pred 19 dňami

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