Type
NTDH
Short description
NTDH utilizing ground heat for campus heating
Location
ETH Campus Hönggerberg in Zürich
Country
Switzerland
End users
University campus
Heat source
Ground/Excess heat
Description
Heat is extracted from ground to fluid. then it is transported to cluster HPs for SH, DHW is prepared with HEX; Excess heat from cooling
Cooling
Yes
Heat source-network connection
HEX? (ground and excess heat-Missing info)
Booster HP or no for SH
HP (per cluster)
Booster HP, IHEU or DHSU for DHW
electric boiler (per building)
TES
3 Vertical ground HEXs (431 boreholes 200 m depth)
Centralized/ Decentralized TES
Centralized
Category
2.4.1.1.2.*
Costs/Price [€] (Investment; Operation; Cost for the consumer)
Investment: 35 mil. €
Tsource [°C]
16 (ground)
Tsupply,min [°C] (network)
8
Tsupply,max [°C] (network)
24
Tsupply,min [°C] (at consumer substation)
30
Tsupply,max [°C] (at consumer substation)
35
Treturn [°C] (network)
12
SCOP=(reference annual heating demand)/(seasonal electricity consumption for heating) [-]
5.8
SEER=(reference annual cooling demand)/(annual electricity consumption for cooling) [-]
6.9
Installed capacity [MW]
5.5
Heating demand [MWh/year]
28450
Network length [km] (if not specified-pipes, trench specified)
1.5
Project area [km2]
0.475
LHD (linear heat density)=(total heat demand)/(length of network) [kWh/m/year]
18966.667 (calculated from data)
LHPDD (linear heating power demand density)=(installed thermal power capacity)/(network length(pipes)) [kW/m]
3.7
Reference 1
https://pubdb.bfe.admin.ch/de/publication/download/8836
Reference 2
https://ethz.ch/content/dam/ethz/main/eth-zurich/nachhaltigkeit/infomaterial/Anergienetz_A4_6s_Einzel_RZ.pdf
Reference 3
https://doi.org/10.1016/j.rser.2018.12.059
