Type
LTDH
Short description
LTDH Houses connected to existing DH with low temperature heating usage
Location
Lystrup
Country
Denmark
End users
40 terraced low energy houses
Heat source
Existing DH
Description
Connected to existing DH, supply water of MTDH is mixed with return water of LTDH n order to achieve low supply temperatures of LTDH
Cooling
Missing info
Heat source-network connection
Shunt (MTDH supply mixed with LTDH return)
Booster HP or no for SH
No
Booster HP, IHEU or DHSU for DHW
IHEU (24.3 kW) or DHSU (4.7 kW) (Slightly lower return temperatures for IHEU)
TES
Tank TES (120 l)
Centralized/ Decentralized TES
Decentralized
Category
3.1.2.1.1./3.1.2.1.2.
Costs/Price [€] (Investment; Operation; Cost for the consumer)
Reference 3 provide detail expenses of every aspect of this DH network-total investment 346900 €; Distribution investment cost: 115 €/m; Annual distribution cost 8.9 €/GJ
Tsource [°C]
70
Tsupply,min [°C] (network)
52.1
Tsupply,max [°C] (network)
52.7
Tsupply,max [°C] (at consumer substation)
50
Treturn [°C] (network)
33.9
Installed capacity [MW]
0.0323
Produced heating energy [MWh/year]
287211
Heating demand [MWh/year]
232070
Building heat demand kWh/m2/year
53.333
Network length [km] (if not specified-pipes, trench specified)
0.723; 0.767 (trench)
Project area [km2]
0.017
Plot ratio=(building area)/(land area)
0.24
Heat loss [%]
17
Heat density=(delivered heat)/(covered area) [MWh/m2]
0.013
LHD (linear heat density)=(total heat demand)/(length of network) [kWh/m/year]
277.778
LHPDD (linear heating power demand density)=(installed thermal power capacity)/(network length(pipes)) [kW/m]
0.04
Reference 1
https://www.danskfjernvarme.dk/-/media/danskfjernvarme/gronenergi/projekter/eudp-lavtemperatur-fjv/guidelines-for-LTDH inal_rev1.pdf
Reference 2
http://celsiuscity.eu/wp-content/uploads/2019/11/Aarhus-Lystrup.pdf
Reference 3
https://www.iea-dhc.org/fileadmin/documents/Annex_X/IEA_Annex_X_Final_Report_2014_-_Toward_4th_Generation_District_Heating.pdf
Reference 4
https://doi.org/10.1016/j.egypro.2017.05.052
