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Large-scale ‘sand battery’ goes online in Finland

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Re: Large-scale ‘sand battery’ goes online in Finland

#261

Post by freemint »

KennyBlanken wrote: post #141
com2kid wrote: post #53

Earlier quoted context omitted.

> Lastly, installing a leak detectors are trivial and common. I've told about a dozen people in my life that leak detectors were a thing, and they were all shocked at the info. From what I gather, their existence is not common knowledge. > Still, water heaters get a drain pan to catch leaks. Initial leaks yes, but eventually hot water heats fail in a dramatic fashion and spew water everywhere. > Your condo may have b…

Tanks don't fail unless the anode gets depleted. You seriously need to tell your condo association to get their maintenance people to flush the water heaters regularly (seasonally or annually) and check/change the anodes. If they're gas-fired heaters, the burner and air intakes should be getting cleaned. If this isn't being done, it's probably because your maintenance is being done by plumbers, who have convinced eve…

How does an anode help against a thermal expansion crack in the wall?

Re: Large-scale ‘sand battery’ goes online in Finland

#262

Post by dubswithus »

leoedin wrote: post #140
dubswithus wrote: post #52

Earlier quoted context omitted.

Cool water? What about freezing water in the winter?

Assuming your pipes are between the tap and the water heater, and the pipes run indoors, the water temperature will be close to room temperature - nowhere near freezing.

Which was a problem in NL because the bathroom of the airbnb was not well insulated. And there wasn't a hot water option because... NL.

Re: Large-scale ‘sand battery’ goes online in Finland

#263

Post by thedougd »

dwighttk wrote: post #105
jefftk wrote: post #103

Earlier quoted context omitted.

Why was the cold water line hot?

It was next to the hot water line and not insulated (enough) and it had pretty much just been sitting there all night.

It's possible there's a faulty faucet mixing valve somewhere in the building causing hot water to mix into the cold line.

Re: Large-scale ‘sand battery’ goes online in Finland

#264

Post by bawana »

How about putting a thermoelectric device in orbit- you know one of those things that generate electricity from a temperature differential- the sun facing side is hundreds of degrees above zero,the shadow side is hundreds of degrees below zero. Beam the energy to earth with a maser

Re: Large-scale ‘sand battery’ goes online in Finland

#265

Post by thedougd »

throwaway742 wrote: post #72
ethagknight wrote: post #51

Earlier quoted context omitted.

This comment is wrong on many levels. Hot water heaters should last a lot longer, and when they fail it’s probably a faulty thermostat or short. Still, water heaters get a drain pan to catch leaks. Lastly, installing a leak detectors are trivial and common. Your condo may have been a bad install or not installed to code. America moves hot water just fine. EDIT: yes water heaters can fail. Usually due to bad install,…

One problem is that people never replace their sacrificial anode. Most people don't even know it exists.

I commonly find it's blocked by the installation. My last house it was blocked by the vent stack and one of the water lines.

Re: Large-scale ‘sand battery’ goes online in Finland

#266

Post by s1artibartfast »

bawana wrote: post #264

How about putting a thermoelectric device in orbit- you know one of those things that generate electricity from a temperature differential- the sun facing side is hundreds of degrees above zero,the shadow side is hundreds of degrees below zero. Beam the energy to earth with a maser

It is hard to radiate heat in space and maintain the low temperature side. Also, thermoelectric materials are notoriously dense and heavy

Re: Large-scale ‘sand battery’ goes online in Finland

#267

Post by icambron »

krageon wrote: post #208
mcosta wrote: post #180

Earlier quoted context omitted.

More people live in New York than in the whole of Finland.

You can sort of tell from the other responses, but really the core of this argument is not the one you think it is: You think this means it is less appropriate for New York because of this fact. It is the opposite. Your population density is higher, so these types of solutions are easier and more cost-effective. This makes the fact that you don't already have it seem even more incompetent, which is the opposite of wh…

I believe the parent was responding to “seems small” in regards to NYC’s steam heating system, which is the largest in the world.

Re: Large-scale ‘sand battery’ goes online in Finland

#268

Post by mschuster91 »

freemint wrote: post #260
mschuster91 wrote: post #193

Earlier quoted context omitted.

> It never makes economic sense to tear down a house if you're paying for it (above the land value). The land value is the key. Often, houses in the 50s-80s were built in what was suburbs or actual small villages back then, with enormous land surrounding them because land was cheap. Nowadays, the urban areas have grown and grown, and with them the desire for space for people to live on - even here in Europe, in Munic…

20x in Munich? That is new to me.

It depends on the area, yes, but some areas like the Kaufingerstraße went up from 7721€/m² in 1980 to 80.000€ in 2012 [1]. In 2019, not even seven years later, the same area was worth 160.000€/m², and other areas also doubled in value over four years [2].

Munich is fucking expensive, I'm actually looking towards moving away entirely and save up to buy something when prices ever become reasonable. Forget about saving anything while living here - Munich drives away those who have been born here all the time.

[1] https://www.sueddeutsche.de/muenchen/muenchner-milliardenspi...

[2] https://www.sueddeutsche.de/muenchen/muenchen-grundstueckspr...

Re: Large-scale ‘sand battery’ goes online in Finland

#269

Post by 1123581321 »

throwaway742 wrote: post #125
1123581321 wrote: post #96

Earlier quoted context omitted.

They last as long as the expected tank life these days. Tanks with longer life rating use powered rods.

>They last as long as the expected tank life these days. Kinda seems like a self-fulfilling prophecy or one could even say planned obsolescence.

It does. Unfortunately, homeowners have no interest in paying for premium units or investing in maintenance. So manufacturing precision goes into exceeding the 8-10 year warranty and little more. My hope is that the current and upcoming electric and natural gas pricing increases will lead to more awareness of heat pump water heaters, which last quite a bit longer.

Re: Large-scale ‘sand battery’ goes online in Finland

#270

Post by mperdemata »

PoignardAzur wrote: post #256
mperdemata wrote: post #245

Earlier quoted context omitted.

There is nothing unilateral in two imperialist powers fighting. Just like there was nothing unilateral in WW1 or WW2.

Sure, the start of World War 2 was very multilateral: Poland wanted not to get invaded, Nazi Germany and the USSR both disagreed. The parallels with the current situation are left up to the reader.

What about https://en.wikipedia.org/wiki/Munich_Agreement

Do you really think that WW2 happened over whether Poland would be invaded? I think you are confusing cause and effect.

Same as thinking that WWI happened due to the assassination of Archduke Franz Ferdinand.

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