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Coriza
lemmy.world
coriza@lemmy.world Joined: 2023-11-10 |
No, it just means there is at least some going into heat in thermodynamic processes. Inevitable with atoms jostling in macroscopic systems.
And in case of a heater, some energy is going to be converted into light and sound and probably other stuff that I don't know. |
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MashedTech
lemmy.world
MashedTech@lemmy.worldJoined: 2023-08-12 |
100% efficient!!! You're using all the energy to do meaningful work! |
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rumba
lemmy.zip
rumba@lemmy.zip Joined: 2024-09-24 |
Electronics teachers generally clarify "other than resistive heaters" |
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tigeruppercut
lemmy.zip
tigeruppercut@lemmy.zipJoined: 2023-08-20 |
A brushless motor only converts ~5% of its input to heat. That's low enough that you can reasonably call it a side effect. Now, a computer, that's a heater that happens to produce math as a side effect. 100% of its input ends up as heat.
That's a funny way of spelling porn |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
Perhaps this is a dumb question, but perhaps it is not: If you just had, in say a studio apartment, or a single bedroom, basically just a large container of water, where the container is made of something fairly to considerably thermally conductive... Would or could this act as something like a thermal regulator for the room, to a potentially useful degree, such that it could ease the overall power usage of an AC/Heating system? The water doesn't do anything, in like a designed machine sense; its not part of plumbing or heating, its just a big ole tank of water, sitting there. The idea I am going with is something like how large static bodies of water act as regulators for nearby climate zones, through a day night cycle ... they tend to keep temperatures in the surrounding area a bit more stable, though of course humidity and the water cycle have other effects in a more open weather system. I also realize there are a lot of potentially confusing or confounding variables at play here. But my thinking is that maybe, at some scale, in some conditions, this could basically normalize your day-night temperature cycle, at least somewhat. Obviously in real world, just a simple tank of water would potentially freeze in winter, or boil in summer, in more extreme environments, that you'd at bare minimum have to have some mechanical system to prevent problems... but uh, ... yeah. |
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SCmSTR
lemmy.blahaj.zone
SCmSTR@lemmy.blahaj.zone Joined: 2023-07-24 |
It all becomes heat eventually in the end though. Sometimes it's just a multi step complex process outside the physical bounds of the heater. Wait a sec, is the universe just God's space heater?
Depends on the god. |
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SCmSTR
lemmy.blahaj.zone
SCmSTR@lemmy.blahaj.zone Joined: 2023-07-24 |
A heat pump will drop to 100% efficiency in cold enough weather.
Can heat pumps drop below 100%? |
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BeardededSquidward
lemmy.blahaj.zone
BeardededSquidward@lemmy.blahaj.zone Joined: 2025-12-04 |
GAH! Unless you personally disinfected them and wiped them clean of disinfectant, GAH! Know how many people play footsie with those? |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
A completely valid pannini press, imo. Like this is literally the 'modern problems require modern solutions' meme. I've used older PC battlestations of mine as 'bonus' spaceheaters more than once, lol, sorta like those 'pocket warmer' apps for phones that would just run some absurd computation that would redline the cpu, hahah! |
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cass27
lemmy.zip
cass27@lemmy.zip Joined: 2025-09-13 |
Noise would be a small but non-zero form of heat loss that shouldn't contribute to temperature increase |
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BeMoreCareful
lemmy.world
BeMoreCareful@lemmy.world Joined: 2023-06-12 |
Perhaps this is a dumb question, but perhaps it is not: If you just had, in say a studio apartment, or a single bedroom, basically just a large container of water, where the container is made of something fairly to considerably thermally conductive... Would or could this act as something like a thermal regulator for the room, to a potentially useful degree, such that it could ease the overall p...
Sounds like adobe sorta. Lots of places in the desert with big walls. |
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Dippy
beehaw.org
Dippy@beehaw.orgJoined: 2024-02-21 |
Perhaps this is a dumb question, but perhaps it is not: If you just had, in say a studio apartment, or a single bedroom, basically just a large container of water, where the container is made of something fairly to considerably thermally conductive... Would or could this act as something like a thermal regulator for the room, to a potentially useful degree, such that it could ease the overall p...
Yes, this is called thermal mass, or more scientificly, heat retention. The more stuff you in have a space, the more resilient to change it'll temperature it is. Insulation, is basically putting a bunch of high retention materials in perimeter of a building so that it stays more consistent |
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M137
lemmy.today
M137@lemmy.todayJoined: 2026-04-17 |
It's the burden of knowledge
Having been on long term sick leave for 15 years means you have to do something with your time and I spend a lot of it learning new things to various depths. |
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billwashere
lemmy.world
billwashere@lemmy.world Joined: 2023-06-12 |
Perhaps this is a dumb question, but perhaps it is not: If you just had, in say a studio apartment, or a single bedroom, basically just a large container of water, where the container is made of something fairly to considerably thermally conductive... Would or could this act as something like a thermal regulator for the room, to a potentially useful degree, such that it could ease the overall p...
I don’t think it’s a dumb question at all. I’m not a physics person but I think what you’re describing is a thermal battery. It’s the reason people put tiles in their ovens for smoothing out hot and cold spots and moderating temperature swings from the oven cutting on and off or opening the door. |
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billwashere
lemmy.world
billwashere@lemmy.world Joined: 2023-06-12 |
Or light. |
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Omgpwnies
lemmy.world
Omgpwnies@lemmy.world Joined: 2023-07-17 |
Sounds like adobe sorta. Lots of places in the desert with big walls.
Large brick/stone fireplace+chimneys do similar in colder climates, holds heat in the winter and stays cooler in the summer. |
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YiddishMcSquidish
lemmy.today
YiddishMcSquidish@lemmy.today Joined: 2025-03-10 |
Aren't computers damn near 100 percent efficient heaters? |
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YiddishMcSquidish
lemmy.today
YiddishMcSquidish@lemmy.today Joined: 2025-03-10 |
Perhaps this is a dumb question, but perhaps it is not: If you just had, in say a studio apartment, or a single bedroom, basically just a large container of water, where the container is made of something fairly to considerably thermally conductive... Would or could this act as something like a thermal regulator for the room, to a potentially useful degree, such that it could ease the overall p...
Useful? No, mainly because you need circulation of the air to feel it. |
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dz2
sopuli.xyz
dz2@sopuli.xyz Joined: 2025-06-30 |
Noise would be a small but non-zero form of heat loss that shouldn't contribute to temperature increase
Noise would turn in to heat as it’s absorbed, so it’s just heat with extra steps. Same deal with lights |
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BeMoreCareful
lemmy.world
BeMoreCareful@lemmy.world Joined: 2023-06-12 |
Large brick/stone fireplace+chimneys do similar in colder climates, holds heat in the winter and stays cooler in the summer.
Oh, I hadn't even thought of that. I always thought stoves were just way more efficient, but a giant old school hearth-thing actually makes a lot more sense now. |
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kkj
lemmy.dbzer0.com
kkj@lemmy.dbzer0.com Joined: 2025-03-08 |
Can heat pumps drop below 100%?
They can drop all the way to 0 if the temperature difference is high enough. You can't heat your house with a heat pump if it's 0K outside. |
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Pipster
lemmy.blahaj.zone
Pipster@lemmy.blahaj.zone Joined: 2024-10-29 |
Perhaps this is a dumb question, but perhaps it is not: If you just had, in say a studio apartment, or a single bedroom, basically just a large container of water, where the container is made of something fairly to considerably thermally conductive... Would or could this act as something like a thermal regulator for the room, to a potentially useful degree, such that it could ease the overall p...
You see this with normal heating systems. My house has hot air heating with a big burner and vents in the rooms. It is great for instant heat but once it turns off you lose the heat just as fast. And if you dont have a vent in the room it can be pretty cold. But the house I grew up in had water filled radiators in every room. Took ages to warm up the house but it would transfer an awful lot of heat into the brick walls so it would stay warm for a really long time after the heating shut off. So in the old house in winter you really didnt notice the heating turning on and off but in my new one it is painfully obvious. I really want to rip it out and get a better system. |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
Useful? No, mainly because you need circulation of the air to feel it.
I didn't downvote you, but: Ok, then... have a ceiling fan above it? A very slow one, that uses little energy? |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
Yes, this is called thermal mass, or more scientificly, heat retention. The more stuff you in have a space, the more resilient to change it'll temperature it is. Insulation, is basically putting a bunch of high retention materials in perimeter of a building so that it stays more consistent
Hrm. What about: Radiant Barrier. Basically, as I understand it, this stuff is extremely good at reflecting heat... not... absorbing and containing it. And it is relatively stupidly cheap, for how effective it is. Like, its so effective that the industry that makes traditional US home insulation batting... basically did everything they could to make it so as few people know this stuff exists as possible. |
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SorryQuick
lemmy.ca
SorryQuick@lemmy.ca Joined: 2023-11-20 |
Every electric device is a heater. Some just do other things too.
Indeed we’ve plugged in a bitcoin miner to our central heating and now heating is “free”. I’m not sure how profitable it is when you’re not using the heat though. |
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kkj
lemmy.dbzer0.com
kkj@lemmy.dbzer0.com Joined: 2025-03-08 |
math as a side effect That's a funny way of spelling porn
Fun fact! Your porn machine can also be used to shitpost. |
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starman2112
sh.itjust.works
starman2112@sh.itjust.worksJoined: 2023-08-10 |
They can drop all the way to 0 if the temperature difference is high enough. You can't heat your house with a heat pump if it's 0K outside.
Heat pumps generally come with an electrical resistive backup in case it's too cold outside, so even at arbitrarily low temperatures a heat pump can only drop to 100% |
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Sylvartas
lemmy.dbzer0.com
Sylvartas@lemmy.dbzer0.com Joined: 2024-12-11 |
A completely valid pannini press, imo. Like this is literally the 'modern problems require modern solutions' meme. I've used older PC battlestations of mine as 'bonus' spaceheaters more than once, lol, sorta like those 'pocket warmer' apps for phones that would just run some absurd computation that would redline the cpu, hahah!
I have a little "tradition" of doing a playthrough of very hardware-demanding stuff in winter. Tarkov is one of my favs for this since it's unoptimized as hell and the post soviet aesthetics really fit the season |
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Sylvartas
lemmy.dbzer0.com
Sylvartas@lemmy.dbzer0.com Joined: 2024-12-11 |
Aren't computers damn near 100 percent efficient heaters?
No, they're damn near as power-efficient as electric space heaters though if I'm not mistaken, but these are not 100% efficient. |
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kkj
lemmy.dbzer0.com
kkj@lemmy.dbzer0.com Joined: 2025-03-08 |
Heat pumps generally come with an electrical resistive backup in case it's too cold outside, so even at arbitrarily low temperatures a heat pump can only drop to 100%
At that point, the heat pump is off and you're using a resistive heater. You can't just glue an LED to an incandescent lightbulb and call it a 50% efficient incandescent lightbulb. |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
I have a little "tradition" of doing a playthrough of very hardware-demanding stuff in winter. Tarkov is one of my favs for this since it's unoptimized as hell and the post soviet aesthetics really fit the season
I may get flack for this but mine was the Cinematic Mod version of HL2. Not because I wanted ... the terrible 'cinematic' music, or ludicrous XXX character model 'upgrades'... I genuienly liked the revamped maps, greater texture detail. |
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YiddishMcSquidish
lemmy.today
YiddishMcSquidish@lemmy.today Joined: 2025-03-10 |
No, they're damn near as power-efficient as electric space heaters though if I'm not mistaken, but these are not 100% efficient.
Forgive me for being argumentative, not my intention to be combative but now that I'm thinking more about it, isn't everything a 100% efficient heater? Like sound hits an object, and is turned into heat. Light hits an object and is turned into heat. Electricity travels down a wire and is turned into heat(usually). |
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YiddishMcSquidish
lemmy.today
YiddishMcSquidish@lemmy.today Joined: 2025-03-10 |
I didn't downvote you, but: Ok, then... have a ceiling fan above it? A very slow one, that uses little energy?
No need to apologize for someone else. But I appreciate the thought. And you are absolutely right. A ceiling fan, plus a thermal mass would work. |
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YiddishMcSquidish
lemmy.today
YiddishMcSquidish@lemmy.today Joined: 2025-03-10 |
I didn't downvote you, but: Ok, then... have a ceiling fan above it? A very slow one, that uses little energy?
Secondary thought! What if you attached a bunch of processor heat sink type fins to the mass? Might not be good for long term regulation, but it would smooth out temperature curves daily. |
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Dippy
beehaw.org
Dippy@beehaw.orgJoined: 2024-02-21 |
Hrm. What about: Radiant Barrier. https://www.greenenergyofsanantonio.com/post/the-evolution-of-radiant-barrier-insulation-from-nasa-to-home-efficiency Basically, as I understand it, this stuff is extremely good at reflecting heat... not... absorbing and containing it. And it is relatively stupidly cheap, for how effective it is. Like, its so effective that the industry that makes traditional U...
Radiant barrier is a different insulation mechanism and is also good. The nice thing about radiant barrier is it requires very little material to do its thing. The best solution is a combination of the 2, but most insulation is still opperating by thermal mass. |
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NιƙƙιDιɱҽʂ
lemmy.world
NikkiDimes@lemmy.world Joined: 2023-07-04 |
A completely valid pannini press, imo. Like this is literally the 'modern problems require modern solutions' meme. I've used older PC battlestations of mine as 'bonus' spaceheaters more than once, lol, sorta like those 'pocket warmer' apps for phones that would just run some absurd computation that would redline the cpu, hahah!
I had some frozen imitation crab legs that I wanted to eat, but didn't want to microwave proper. I put them on top of my PC's GPU radiator and ran a stress test while watching stuff so it would thaw faster without overheating. |
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edinbruh
feddit.it
edinbruh@feddit.itJoined: 2023-02-01 |
Isn't some energy still dissipated as light instead of heat? |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
Radiant barrier is a different insulation mechanism and is also good. The nice thing about radiant barrier is it requires very little material to do its thing. The best solution is a combination of the 2, but most insulation is still opperating by thermal mass.
That is in line with my understanding as well. |
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starman2112
sh.itjust.works
starman2112@sh.itjust.worksJoined: 2023-08-10 |
At that point, the heat pump is off and you're using a resistive heater. You can't just glue an LED to an incandescent lightbulb and call it a 50% efficient incandescent lightbulb.
True. You know, the moment I left that comment, I thought that was pedantic, I shouldn't have said it, but by that point if I had deleted it it would just sit there saying deleted forever and that would bother me even more |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
Secondary thought! What if you attached a bunch of processor heat sink type fins to the mass? Might not be good for long term regulation, but it would smooth out temperature curves daily.
Yes but then the downside is you have a giant porcupine that will draw blood, in the middle of the room, lol. You could buff that out a bit though? ...? |
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ඞmir
lemmy.ml
Amir@lemmy.mlJoined: 2023-06-01 |
A completely valid pannini press, imo. Like this is literally the 'modern problems require modern solutions' meme. I've used older PC battlestations of mine as 'bonus' spaceheaters more than once, lol, sorta like those 'pocket warmer' apps for phones that would just run some absurd computation that would redline the cpu, hahah!
That's sausage-bread though |
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Noved
lemmy.ca
Noved@lemmy.caJoined: 2023-06-09 |
Isn't some energy still dissipated as light instead of heat?
Which travels to a location, hits it and is eventually converted to heat. |
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Null User Object
lemmy.world
nulluser@lemmy.worldJoined: 2023-06-08 |
At that point, the heat pump is off and you're using a resistive heater. You can't just glue an LED to an incandescent lightbulb and call it a 50% efficient incandescent lightbulb.
Wait. Hold my beer. |
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YiddishMcSquidish
lemmy.today
YiddishMcSquidish@lemmy.today Joined: 2025-03-10 |
Yes but then the downside is you have a giant porcupine that will draw blood, in the middle of the room, lol. You could buff that out a bit though? ...?
Badges of honor are not so easily dismissed. |
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piccolo
sh.itjust.works
piccolo@sh.itjust.works Joined: 2024-09-15 |
Isn't some energy still dissipated as light instead of heat?
When light is absorbed by surface, the material temperature increases and remits light at a longer wave, ussually in the IR spectrum. So its safe to say all light is heat enegry. |
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LetThereBeNick
lemmy.zip
LetThereBeNick@lemmy.zip Joined: 2026-04-26 |
Name? Favorite link?
TechnologyConnections yt channel. I see his video on dishwashers mentioned a lot. |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
Badges of honor are not so easily dismissed.
Yes but there might be nonmasochists in the household, guests, children, pets, etc. Not everyone is defacto down with a blood sacrifice for the Omnissiah. |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
That's sausage-bread though
Oh. Sorry, I'm... actually unfamiliar with concept. Is that basically a sausage with a small loaf of bread baked around it? |
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sp3ctr4l
lemmy.dbzer0.com
sp3ctr4l@lemmy.dbzer0.comJoined: 2025-04-10 |
GAH! Unless you personally disinfected them and wiped them clean of disinfectant, GAH! Know how many people play footsie with those?
... Some people keep track of their power bricks and know where they've been. ... Never thought 'good cable management' would become a hygiene/sanitation issue, but, apparently it is. |
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merc
sh.itjust.works
merc@sh.itjust.worksJoined: 2023-06-09 |
I love firing up my PC and gaming on cold winter nights. A well placed fan or two and I can spread it through my entire apartment and the heat won't kick on all night. Ends up saving me money, my heater costs way more than my PC to run.
Sounds like your cold winter nights are not very cold. |
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