General > General Technical Chat
The Hydrogen fuel economy will not be viable.
tom66:
--- Quote from: Bud on January 16, 2023, 10:09:07 pm ---Because a central heat generating plant is a single point of failure. I would say the same. My personal boiler I am responsible for it. If i do it well, my home is warm.
--- End quote ---
Not really, a central plant could be just as reliable, could include multiple heat generators, backup oil/gas furnace etc. There's no reason to believe a home heating system is more reliable.
Besides, there was no mention of reliability, just general "preference". I'll try to dig the clip out.
nctnico:
--- Quote from: Marco on January 16, 2023, 03:35:41 pm ---
--- Quote from: nctnico on January 15, 2023, 09:26:58 pm ---Edit: I don't see the 3 loop thing happening. Just having one loop with hot water is expensive enough already.
--- End quote ---
With a distributed setup the pipes are much cheaper. 10k homes need a slightly bigger pipe than 100 homes, also propylene glycol ain't really toxic.
--- End quote ---
I beg to differ. Remember I'm on district heating and a single connection is very expensive already. These systems don't consist of single loops. Blocks of homes are connected through sub-stations which distribute the hot water from the main loop into sub-loops. In a setup with 3 pipes, you'd need the sub-stations 3 times as well. The economy of scale is limited.
--- Quote from: Bud on January 16, 2023, 10:09:07 pm ---Because a central heat generating plant is a single point of failure. I would say the same. My personal boiler I am responsible for it. If i do it well, my house is warm.
--- End quote ---
No. I have been in the cold longer due to a boiler failing compared to district heating. Especially modern boilers are prone to failures due to the electronics. The fact is that the district heating systems are well maintained (preventive maintenance) and with crews on standby to fix problems. Spare parts readily available because the installation is highly standarised. Try to find a plumber to fix your boiler in the middle of the winter... Over here many won't help you if you don't have a service contract.
In addition: larger district heating networks have multiple heat sources and are setup using rings so there is redundancy.
Marco:
--- Quote from: nctnico on January 16, 2023, 10:23:42 pm ---In a setup with 3 pipes, you'd need the sub-stations 3 times as well.
--- End quote ---
I'm suggesting making the heatpump a station for on the order of a 100 homes, a distributed system which could be installed under the sidewalk rather than needing roadwork for the trunk distribution network. Drilling for a centralized system which could heat an entire city would be hard any way, you'd be looking at those 20 km deep boreholes they want to use for power stations.
It only needs pipes of sufficient diameter to feed the homes on it's local loop. Not the massive 20 km one with enough flow to warm an entire city.
MadScientist:
District hearing as a new install is dead no one is considering it outside some weird legacy projects
james_s:
If it was a new development I suppose it could be feasible but how do you meter it? I've never encountered district heating before, I don't whether it's ever been done in the US, maybe in some older cities.
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