Type
NTDH
Short description
NTDH utilizing river heat and solar for house heating
Location
Ohrberg
Country
Germany
End users
69 planned single-family houses (low energy)
Heat source
River/Solar
Description
2 central HPs (185 kW each) for preheating brine water which goes to HPs at consumer substation for SH and DHW (5 to 20 kW); Solar thermal used for DHW
Cooling
Missing info
Heat source-network connection
HP (river); Solar collectors
Booster HP or no for SH
HP
Booster HP, IHEU or DHSU for DHW
HP and solar collectors
TES
Tank TES (400 l)
Centralized/ Decentralized TES
Centralised
Category
1.11.1.1.1.
Tsource [°C]
3.7
Tsupply,min [°C] (network)
10
Tsupply,max [°C] (network)
12
Tsupply,min [°C] (at consumer substation)
45
Tsupply,max [°C] (at consumer substation)
55
Treturn [°C] (network)
6; 35 (consumer)
Installed capacity [MW]
0.37 (each house has its own heat pump outputs from 5 to 20 kW)
Project area [km2]
0.08
Reference 1
https://wpuq.de/solarsiedlung/
Reference 2
https://www.fvee.de/fileadmin/publikationen/Themenhefte/th1997/th1997_02_03.pdf
Reference 3
https://www.diekaelte.de/sites/default/files/ulmer/file_172029.pdf
Reference 4
https://doi.org/10.1016/j.rser.2018.12.059
