Type
LTDH
Short description
LTDH utilizing biomass boiler, ground and air heat pumps and solar collectors for house heating
Location
Greenwatt Way, Slough
Country
England
End users
10 dwellings and information center
Heat source
Ground/Air/Solar
Description
Biomass boiler, ground and air HPs and solar collectors used as a heat source of network. Main network directly connected with SH
Cooling
Missing info
Heat source-network connection
HP? (ground and air-Missing info); Solar collectors
Booster HP or no for SH
No
Booster HP, IHEU or DHSU for DHW
IHEU
TES
Tank TES 8000 l
Centralized/ Decentralized TES
Centralized
Category
1.3.2.1.1.*
Costs/Price [€] (Investment; Operation; Cost for the consumer)
Distribution investment cost: 133 €/m; Annual distribution cost 13.7 €/GJ
Tsupply,min [°C] (network)
50.5
Tsupply,max [°C] (network)
51.7
Tsupply,min [°C] (at consumer substation)
50.5
Tsupply,max [°C] (at consumer substation)
51.7
Treturn [°C] (network)
34.9 (network); 35 consumer substation)
SCOP=(reference annual heating demand)/(seasonal electricity consumption for heating) [-]
air HP 2.1; ground HP 2.9
Installed capacity [MW]
2x17 kW (ground HP); 2x20 kW (air HP); 30 kW (biomass boiler)
Produced heating energy [MWh/year]
49.444
Heating demand [MWh/year]
35.7
Building heat demand kWh/m2/year
42.222
Network length [km] (if not specified-pipes, trench specified)
0.165 (trench)
Project area [km2]
0.0018
Plot ratio=(building area)/(land area)
0.47
Heat loss [%]
28
Heat density=(delivered heat)/(covered area) [MWh/m2]
0.019
LHD (linear heat density)=(total heat demand)/(length of network) [kWh/m/year]
222.222
LHPDD (linear heating power demand density)=(installed thermal power capacity)/(network length(pipes)) [kW/m]
0.6303 (calculated from data-trench length)
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/Slough.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://backend.orbit.dtu.dk/ws/portalfiles/portal/142226895/Untitled.pdf
