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| Hydrogen battery for the home |
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| wraper:
And specs say nothing about efficiency. I wonder why... |
| wraper:
--- Quote ---Unlike other lithium batteries, it can also constantly recharge itself rather than waiting until it has been fully discharged. --- End quote --- :palm:, Also I doubt fuel cell will last anywhere close to match 20k "Hydride Cycles" claimed. IMHO they decided to stay silent about uncomfortable things. |
| nctnico:
--- Quote from: NiHaoMike on January 21, 2021, 12:59:34 pm ---LTO batteries can already do 20k cycles. --- End quote --- Still... what is the cost per stored kWh (Levelized Cost of Storage / LCOS )? In the end that is all what matters. --- Quote ---Then there's thermal storage which would only cover HVAC and hot water but at a way lower cost than any other known storage technology and no inherent limit on the number of cycles. --- End quote --- But then you only have hot water. |
| Red Squirrel:
Heat is what uses the most energy in a home so heat storage could be interesting if turned into an utility. I wonder, how viable would it be to have "heat service" as an utility. Instead of gas line coming to the home you have two pipes with heated water, an in and an out. These connect to the larger lines that would be going to every other home. You get charged based on the delta T of the in/out so basically the more heat you extract the more you get charged. Ideally this would need to be cheaper per BTU than natural gas to be viable though. This network could also go to factories and other key areas that may have waste heat, to add to the system. Heck even homes could have the option to add heat to the system if they want to. For example if you have a wood stove you could decide to add heat to the system and it would make the meter go backwards as the delta T would now be positive. This would only make sense if green energy is used to generate the heat though. If it just goes to a big natural gas plant then it probably makes no sense vs running gas to each home. |
| nctnico:
--- Quote from: Red Squirrel on January 21, 2021, 11:19:17 pm ---Heat is what uses the most energy in a home so heat storage could be interesting if turned into an utility. I wonder, how viable would it be to have "heat service" as an utility. Instead of gas line coming to the home you have two pipes with heated water, an in and an out. These connect to the larger lines that would be going to every other home. You get charged based on the delta T of the in/out so basically the more heat you extract the more you get charged. Ideally this would need to be cheaper per BTU than natural gas to be viable though. This network could also go to factories and other key areas that may have waste heat, to add to the system. Heck even homes could have the option to add heat to the system if they want to. For example if you have a wood stove you could decide to add heat to the system and it would make the meter go backwards as the delta T would now be positive. This would only make sense if green energy is used to generate the heat though. If it just goes to a big natural gas plant then it probably makes no sense vs running gas to each home. --- End quote --- I have been living in a house which has exactly that for the past 20 years. It works pretty good (the hot water tap runs just as fast as the cold one) and is reliable. However laws had to be put in place to make sure it is not more expensive compared to having a natural gas boiler. It isn't exactly cheap to build. With natural gas being phased out in the Netherlands a lot of new 'city heating' systems are being rolled out at the moment. The heat comes from electricity power plants; the common claim is that it saves about 30% of CO2 emissions compared to having a boiler yourself. IIRC I pay about 38 euro per GJ. |
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