what stops geo energy?digg a few km underground and you got yourself heat enough to steam water for an infinite loop?should there not be a rush towards this? what exactly is the downsides?
>>16478696I don't know shit about shit but I think it only works well if there's a large delta between underground and the surface. So cold as fuck places use geothermal. Don't know about really hot places, maybe not.
>>16478696it only works for places with particularly thin crust>>16478702they usually build their homes underground or use fancy tricks like evaporative cooling.
>>16478696expert here, germany.well Im not digging holes myself but anything else I fits.>what stops geo energy?its an high invest, has uncertanties and a lot of regulations for good reasons.our water reserves are also stored down there and heat extraction can also lead to problems.depending on where you live this is not available or a very good decision.but you shoulnt think there is a 100% probability for a predicted T(h) just because you live at a good spot.you have roughly 3 kinds of using geothermal energy, while its all grey zone in between.you can stay right at the surface, use a big area (or a well if there is one where you live) and a heat pump.your temperatures are something like 10°C, the rest is the job of the heat pump.this heat source is better than air and im combo with floor heating allows a good COP so low power consumption.this is only reasonable for modern houses, and you need a big area, below streets and such isnt working.you can go do to something like 1000m and get temperatures between 25-60°C.typically you use a separated system for that, so you dont use ground water and the pump can remain at the surface.this can be used without heat pump sometimes.and then there is deep geothermal energy, typically 3500m and you use the underground water.at some rare spots this can allows ~175°C and in a few locations you can produce power and use the heat.but don think this is a good efficiency.heat to power requires higher temperatures (300°C+) for a good efficiency, its just a little power.Idont know what temperatures the icelanders have available, there surely is more possible.
>>16478844Couldn't you just use different fluid to water?Like you extract heat from water, with something boiling at 130˚C and compress that so temperature will be enough, then transfer heat to water for turbine?
It cost few thousands and this is more than typical middle class household is willing to pay. Then they curse energy prices. Rich people buy this and it will pay its value back in few years. Then they have become richer.I fucking hate stupid poor people.
>>16478852this is not necessary and also disadvantageous.of course you could do that, but the amount of energy that can be transported with water is the highest, so water is always used as the medium.compare heat capacities of different fluids and also look at thermal conductivity.we have no replacement for waterbut what you are decribing is already in use.the heat from the water then is transfered to some other liquid.https://en.wikipedia.org/wiki/Organic_Rankine_cyclemeans even more invest.the efficiency is then of course higher, but this a question of what you planned since you might want both, power and heat.>and compress thatthis is also a thing, its called MVR - mechanical vapor recompression and sometimes can make sense.in principle this is also a heat pump. increase temperature of your heat source by using power.with downstream ORC you can also increase power efficiency of any standard power plant.but it makes the system way more expensive and its takes more time for starting up and slowing down.so far nobody really uses this since the renewables ask for more flexibility in operation.
>>16478871>then transfer heat to water for turbine?sounds possible, of course, but the conservation of energy is playing tricks on you here.while you then have your temperature level, you are limited in the amount of energy by the transport of the other substance.the amount of water that you can then heat to the high temperature is lower in relation to the two heat capacities (working fluid heat cap/ water heat cap).and then its just to much invest and maintenance to have a real adavantage I guess.
>>16478696enjoy your breaking foundationinb4 source
>>16478696The inside of the Earth is just as fabricated as "space" is.
>>16478858Poor people can't afford it and if they borrow for it they'll bleed away any gains on interest rates.For many of these meme technologies you might earn more by simply investing the money it would cost and pay the bills with dividends.
You still need to pay a utility company to drill, and unless they offer it at around market price... you might live in a region where only commercial large sites do it for a large premium.You also have>>16478844Which isn't willing to just drill 50m for the correct soil type.
>>16478844>expert here, germany.>regulations for good reasons.
>>16478696>digg a few kmCan't do it, Ungern will come and fuck you up for disturbing Agartha, USSR ceased to exist after it dug Kola Superdeep Borehole.
>>16478696If you keep removing heat from the Earth it'll freeze...That means no more food.Fucking obvious
>>16478960No surprise. Krauts have been buckbroken and spineless for a while
>>16478980>for a whileEver since the unification of Germany it was authoritarian uberbureaucratic shithole under any regime it had. It's clearly a failed experiment and we should go back to holy roman empire style decentralization.
>>16478874>>16478871I don't care about your made up rules, supercritical CO2 transfers more power than water, you are just memeber of race that fails engeneering whereever it sees a challange, often claiming that that's the way you do it.
>>16479094you just failed hard at engineering.nobody can afford your systems.not to mention what happens if you have to service them.
>>16478960>rules badyou are welcome to poison the groundwater in your shithole.meanwhile I worship I can drink from any tap at any time.
>>16479166That's because I would sell systems but kWh .. Also that thing is called Economy, and it's not engineering, it's not engineers job to make stuff affordable. It's up to economy to collect more money for initial investment in energy, because my system in 10years, is still cheaper on greenfield, than removal of your system and installing mine.
>>16479172>it's not engineers job to make stuff affordablewelcome to the real world.
Nah, it's just engineering that water doesn't even boil at temperature at which you can already have supercritical coolant at more than 10 bar of pressure difference.Morons.
>>16478696Doesn't it become less efficient over time? Like if you put in more heat than you take out, then eventually are not going to get cool temperatures any more. I vaguely remember something similar happening to the London Tube, the oldest underground railway in the world, it started off being so cold they needed heaters in the cars, now the tunnels need cooling systems because its so warm and the surrounding rock can't absorb any more heat.
>>16479172>it's not engineers job to make stuff affordableThat is quite literally the job of an engineer a product that can't be bought is fucking worthlessnobody will employ an engineer that makes stuff more expensive than they have to be to get the job done.
>>16479463it depends.OPs picture is already a regeneration.surface near systems collecting to a depth of about 5m face no real issues, temperature of soil typically is driven by seasons and sun here.at around 10 m and deeper the temperature is constant the whole year, so adding or subtracting heat here could have an effect at all.if you use an underground well, it depends on the flow whether you have to regenerate it.regeneration is taken into account in the design, but different types of stone have different conductivities and so it can happen that the temperature deviates to much from the plan.you cant check all uncertaties down there, so overdimensioning should therefore be never too small.deep geothermal energy in particular, where the temperature level for electricity generation during the amortization period plays a role, is the greatest risk here.imagine you built a power plant and then its not properly working and you also cant sell enough power.a lot of money that is lost.a system that works with a heat pump is less sensitive in this respect. the proportion of electricity for heat generation will be a little higher if that happens, that is all.
>>16478696would be also good for desaltination if you use seawater and want to build huge castles out of salt.
Alot of the comments were tldr...It's mostly becuz they can't justify charging for the perpetual, especially if it's a known thing for the common folks. Which is another reason they just hope and pray ppl don't try to learn computers or electronics or Teslas technology. It keeps the power and money in the masons hands lol it's crazy how they printed their own money for us to use and they ended up with most of it and it's worthless lol take that to the bank
>>16478696Geothermal steam plants only work in locations where you have volcanic activity relatively close to the surface.Like hydroelectric dams, they're a great option for clean energy, but they are limited to select locations.Ground-source heat pumps for individual buildings work very well year round and only need to be a couple feet deep. However, dropping in an air-source heat pump in is a lot faster and cheaper than digging up your whole yard to bury coils of copper refrigerant line.Air-source heat pumps do become ineffective when the air is below freezing temp, which makes them a poor choice for colder climate regions, but in those colder regions it's still very expensive to install ground-source heat pumps compared to just burning wood/oil/gas for heat. Heat pumps (both air and ground source) also require electricity to operate, meaning you will always need wood/coal/oil/gas as a backup heat source in the event of an electrical outage. If you require a backup system that is both cheaper and more reliable than the primary system, why even spend money on the primary system as all?Additionally, even ground-source heat pumps fail when you go far enough north/south that you encounter permafrost.
>>16481960t. Government trained donkey sent to suppress intellectual growth the right way
