District Heating of the Future
Jutland, Denmark
PROJECT TEAM & PARTNERS
- Ramboll
- PlanEnergi
- ArCon solvarme
- Danfoss
- Advansor heat-pumps
- Teknologisk Institut
- Nordjysk Elhandel
CONTRACT VALUE
€ 3.107.000
FUNDING
The Danish Energy Authority, EUDP
(€ 0.7mill.) and from Central Denmark Region's
Development Forum (€ 0.2 mill.)
TIMESCALE
1st August 2008 - 31st December 2011 (2 years)
DESCRIPTION OF THE PROJECT
The project is about developing a set of criteria, design and demonstrate that district and block heating are a cost efficient way of reducing energy consumption and CO2 emissions in new and existing buildings.
The Danish district heating system has the potential to continue its role as the spine of the Danish energy system. District heating is the most cost-effective way of fitting in surplus heat from waste incineration, CHP and industry and different types of renewable energy technologies into the energy system of the future, giving in that way the possibility of including more electricity from wind and other renewable sources. District heating creates the possibility for flexible energy usage, can act as storage for the fluctuating energy production, and fulfil the need for heat and cooling in buildings.
The objective of this project is to reduce the fuel consumption and CO2 emissions related to the heating of buildings by improving the operation of heat production plants and heat distribution systems. This can be achieved by means of cost efficient and intelligent use of district heating and individual block heating together with renewable energy sources.
PROJECT TARGETS
Target 1: More than 75% of heat for the new residential area must be derived by renewable sources, on an annual basis.
Result - Heat for the new residential area was calculated for 10 different alternatives. The renewable energy ratio is above 0.75 in all alternatives.
Target 2: The heat loss in the district heating system for the new residential area must not exceed 15%, on an annual basis.
Result - With the marked decentralized production in the area and the effective distribution network will not exceed 15%.
CHALLENGES FACED
To reach this objective the project had to develop fair criteria for low resource district heating (in relation to the Danish Building Regulations), followed by developing and demonstrating an optimal use of district heating, produced by renewable energy resources (partly by full scale demonstration with 100 buildings in Ring Søpark, Brædstrup in Jutland partly by simulations in relation to EnergyFlexHouse). The findings will be published in a "Best Practice" catalogue.
The project consists of four phases:
Phase 1: Development of a method that will include renewable energy and CHP (Combined Heat and Power) from common heating solutions (e.g. district heating and block heating) in the calculation of energy demand in buildings (Danish Building Regulations 2008).
Phase 2: Demonstration and evaluation of the benefits and interaction when a building producing renewable energy is connected to a district heating system.
Phase 3: Development and demonstration of a highly efficient and low CO2 emission decentralised district heating system utilising the flexible and intelligent energy system.
Phase 4: Publishing of "Best practice" (supply catalogue): Guidelines for highly efficient and low CO2 emission decentralised district heating systems, including examples with calculations.
INNOVATIVE PRACTICE
It was found that the combination of ground-based solar heating systems, individual roof integrated solar heating systems and highly efficient pipe systems results in considerable reduction of losses in district heating systems.
LEGISLATIVE REQUIREMENTS
The requirements to reduce future energy consumption in buildings led to new ideas regarding the future of district heating.
LESSONS LEARNT
One of the aims of the project is to prove that this concept can be used worldwide even though there is still room for further development.
CONTACT DETAILS
Per Kristensen, Manager Braedstrup Fjernvarme.
Tel: + 45 75.75.33.00
E-mail address: pk@braedstrup-fjernvarme.dk
Jesper Moeller Larsen, M.Sc. Civ. Eng. Ramboll
Tel: +45 9935 7522
E-mail address: jeml@ramboll.dk
