How to decarbonise district heating The RELaTED experience Roberto - - PowerPoint PPT Presentation

The RELaTED experience

How to decarbonise district heating

Roberto GARAY MARTINEZ RELaTED Project Coordinator Building Technologies Div, TECNALIA roberto.garay@tecnalia.com

• Energy efficient heating system with proven reliability
• Supplies heating and cooling to millions of households in Europe
• Large systems operated by professional crews
• Infrastructure costs are shared

District Heating

• Most DHs are based on fossil fuels
• Boilerplants/CHP

systems should be substituted y biogas, biomass, waste incineration systems.

• Renewable energy systems such as Geothermal Heat Pumps, Large Scale

integration of Solar Thermal Systems, etc.

• Integration of Industrial Waste Heat into Open DH concepts

Need for updates/upgrades

• Distribution temperatures (70-100ºC) need to be lowered
• Reduce distribution loss
• Improve integration of RES
• Allow for extension to areas with lower urban/heat load densities

Need for updates/upgrades

• EPBD
• Building renovation will reduce its heating load by ~2%/year
• New buildings will be constructed to meet NZEB
• Stability of DH network
• Non-continuous production facilities (Solar Thermal, etc.), and dynamic energy

costs (Heat Pumps)

• Security of supply of Fossil Fuels (long-term price scenario)

Challenges

• Improvement of performance
• Reduced Distribution Temperature.
• Short term: network loss reduction
• Long term: Reduction of heat production temperature
• Continuous commissioning of substations.
• Short term: Early repair of failures
• Long term: Substitution of lower performing substations
• Long term: Facilitation of further Temperature reduction

Routemap

• Reduced Carbon Intensity
• Industrial waste heat purchase (>0,5MW)
• Integration of Large Solar Thermal plants
• Connection of Building Integrated Solar Thermal systems into the DH
• Conversion of cooling systems (supermarket, space cooling) into dual function

systems

Routemap

• DH stability
• Reduced carbon intensity -> Reduced import dependency
• Thermal storage -> Higher fraction of RES (@ lower electricity costs)
• Long term assessment of energy transitions to ensure profitability of the system

Routemap

• Improvements @ Building Level for an improvement @ DH scale
• Building Integrated, DH-connected Low Temperature Solar Thermal Systems
• Standardized concept of ST system with direct connection to DH.
• Twice as much heat produced
• DH-connected, Reversible Heat Pumps
• Triple Function Substations

RELaTED Technologies

• Improvements @ Building Level for an improvement @ DH scale
• Building Integrated, DH-connected Low Temperature Solar Thermal Systems
• DH-connected, Reversible Heat Pumps
• Connection of high-temperature diffusion systems to low-T DH
• Dual function heat pump when in cooling mode
• Triple Function Substations

RELaTED Technologies

• Improvements @ Building Level for an improvement @ DH scale
• Building Integrated, DH-connected Low Temperature Solar Thermal Systems
• DH-connected, Reversible Heat Pumps
• Triple Function Substations
• Allow the connection of solar systems and heat pump to the DH
• Bidirectional heat supply
• Functions: Heating, Cooling & Injection of ST heat.

RELaTED Technologies

RELaTED DH Networks

Vinge, DK Iurreta Belgrade ES SR Tartu, EE

• 19/20 heating season
• Reduction of operational temperatures in TARTU and BELGRADE
• Integration of industrial waste heat from 2 producers.
• 20/21 heating season
• Integration of RELaTED technologies in VINGE, BELGRADE and IURRETA
• Additional waste heat producers integrated in TARTU

Next milestones

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 768567 This presentation reflects only the author’s views and the Agency and the Commission is not responsible for any use that may be made of the information contained therein

Thank You

www.relatedproject.eu roberto.garay@tecnalia.com