Type
LTDH
Short description
LTDH utilizing existing DH for heating of passive houses
Location
Hertings farm in Falkenberg
Country
Sweden
End users
Four multi-family passive houses
Heat source
Existing DH/Solar
Description
Existing DH (based on woodchips, pellets, bio oil, natural gas, fossil oil) that supplies HEX at consumer substation for SH and DHW (SH provided with air heating)
Cooling
Missing info
Heat source-network connection
MTDH network is connected directly to low energy buildings
Booster HP or no for SH
No (water from DH is used to heat (preheated by solar energy) air which brings heat to consumer; also floor heating implemented)
Booster HP, IHEU or DHSU for DHW
No (network temperatures high enough)
Category
N/A
Costs/Price [€] (Investment; Operation; Cost for the consumer)
Distribution investment cost: 206 €/m; Annual distribution cost 4.5 €/GJ
Tsupply,min [°C] (network)
73
Tsupply,max [°C] (network)
85
Treturn [°C] (network)
43.5
Installed capacity [MW]
0.712
Produced heating energy [MWh/year]
381.667
Heating demand [MWh/year]
348
Building heat demand kWh/m2/year
34.167
Network length [km] (if not specified-pipes, trench specified)
0.342 (trench)
Project area [km2]
0.014
Plot ratio=(building area)/(land area)
0.73
Heat loss [%]
9
Heat density=(delivered heat)/(covered area) [MWh/m2]
0.025
LHD (linear heat density)=(total heat demand)/(length of network) [kWh/m/year]
1027.778
LHPDD (linear heating power demand density)=(installed thermal power capacity)/(network length(pipes)) [kW/m]
1.02
Reference 1
https://www.iea-dhc.org/fileadmin/documents/Annex_X/IEA_Annex_X_Final_Report_2014_-_Toward_4th_Generation_District_Heating.pdf
