@abclimate @citizensane1 @janrosenow @foresightdk @annagumbau @whatmatterspod
Just listened to a discussion on district heatin networks DHNs on foresightdk.com/wm-ep22/?utm_m…
Some takeaways from me:
* the #EU is woefully anware of the importance of the heating question in general and->
Just listened to a discussion on district heatin networks DHNs on foresightdk.com/wm-ep22/?utm_m…
Some takeaways from me:
* the #EU is woefully anware of the importance of the heating question in general and->
-> the importance of district heating networks in particular
* this is mirrored by the fact, that in the #repowereu scheme, 8.5 bio € are earmared for it while 210 bio € would be appropriate
* DHNs are much more efficient in primary energy use than every building burning ->
* this is mirrored by the fact, that in the #repowereu scheme, 8.5 bio € are earmared for it while 210 bio € would be appropriate
* DHNs are much more efficient in primary energy use than every building burning ->
-> the gas in its own heating: -30% gas use
* DHN is large projects which mean a framework is needed for organization, coordination, de-risking, business model
* this framework is lacking sorely.
* future heat source mix (very coarse): geothermal 10%, waste heat 20%, heat pumps->
* DHN is large projects which mean a framework is needed for organization, coordination, de-risking, business model
* this framework is lacking sorely.
* future heat source mix (very coarse): geothermal 10%, waste heat 20%, heat pumps->
-> 70%.
* Solar thermal is underrepresented. (i wonder though, whether PV + HPs is better, as it makes the system more flexible: can exchange power with the rest of the system according to an optimization strategy, while pure ST installations are islands.) ->
* Solar thermal is underrepresented. (i wonder though, whether PV + HPs is better, as it makes the system more flexible: can exchange power with the rest of the system according to an optimization strategy, while pure ST installations are islands.) ->
->
* heat storage done right does cost ~~ 1% of electricity storage per kWh. it is only logical to use it as much as possible to even out renewable intermittency.
* insulated buildings allow for lower DHN temperatures => higher efficiencies if heat is provided renwably =>
->
* heat storage done right does cost ~~ 1% of electricity storage per kWh. it is only logical to use it as much as possible to even out renewable intermittency.
* insulated buildings allow for lower DHN temperatures => higher efficiencies if heat is provided renwably =>
->
-> double win.
* structural problems here: the pesky landlord-tenant-dilemma and others.
some thoughts of my own:
* In USA there are indeed discussions and actions to lure the oil&gas industry into the GT business. Would be a win-win.
* The #euets2 and national systems will ->
* structural problems here: the pesky landlord-tenant-dilemma and others.
some thoughts of my own:
* In USA there are indeed discussions and actions to lure the oil&gas industry into the GT business. Would be a win-win.
* The #euets2 and national systems will ->
->
hopefully re-create a more level playing field between utilities (currently having higher energy costs through the #euets) and private boilers with very low taxes on fossil fuel, thus improving the business case for electric heat pumps and efficiency investments.
* The ->
hopefully re-create a more level playing field between utilities (currently having higher energy costs through the #euets) and private boilers with very low taxes on fossil fuel, thus improving the business case for electric heat pumps and efficiency investments.
* The ->
-> Canadian company @eavor is currently developing deep hot dry rock closed loop heat exchangers. A first installation is being drilled in Geretsried, Bavaria just now. They are advertizing GT dispatchable electricity, but it would o.c. also work for just heat. The ->
->
big advantage is, that hot dry rock can be found almost everywhere, so the area suitable for GT would be greatly increased. The big question is: can the drilling process made cheap enough to get to the depth required?
big advantage is, that hot dry rock can be found almost everywhere, so the area suitable for GT would be greatly increased. The big question is: can the drilling process made cheap enough to get to the depth required?
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