Type
NTDH
Short description
NTDH utilizing ground water for community heating
Location
Dollnstein
Country
Germany
End users
300 person community (2 commercial units, 7 municipal units, 31 residential units)
Heat source
Ground water/Solar/Gas
Description
Ground water HP and solar collectors heat fluid that is stored in storages; Gas CHP additionally raises temperature of fluid for SH and DHW; Gas boiler used as back-up
Cooling
Missing info
Heat source-network connection
HP (ground water); Solar collectors
Booster HP or no for SH
HP
Booster HP, IHEU or DHSU for DHW
HP
TES
Buffer tank 27000 l (80 °C); Low temperature tank 15000 l (25 °C)
Centralized/ Decentralized TES
Centralized
Category
1.4.1.1.1.
Costs/Price [€] (Investment; Operation; Cost for the consumer)
Investment: 1.3 mil. €; Price: 11 ct/kWh
Tsupply,min [°C] (network)
25
Tsupply,max [°C] (at consumer substation)
80?
Installed capacity [MW]
0.44 (water HP); 0.25 (CHP); 0.3 (gas boiler)
Heating demand [MWh/year]
100000
Network length [km] (if not specified-pipes, trench specified)
1.8
Reference 1
https://www.waermepumpe.de/uploads/tx_bcpageflip/Broschuere_Siedlungen_Novelle_2018_web.pdf
Reference 2
https://blog.paradigma.de/kaltes-netz-energie-dollnstein/