btes for tomorrows district heating systems ......fredrik martinsson...
TRANSCRIPT
BTES for tomorrows district heating systems (Borrhålslager för morgondagens fjärrvärme)
Joint seminar btw the projects Termiska Energilager and RockStore, Stockholm, KTH, 20 September 2019 Fredrik Martinsson, Energiforsk, Swedish Energy Research Centre
What do we do?
• R&D initiation– Early feasibility studies– Program development
• R&D coordination– Research program - often in collaboration
with authorities– Swedish industry in international projects
• Specialist services and international cooperation– Qualified investigative and analytical services– Arrangement of conferences and seminars– Contract education– Graduate Schools
• Representatives of international agencies
Why focus on thermal storage integrated in district heating systems?
• Mismatch between the variable renewable production and the variable demand will become an increasing cost for the energy system – Flexibility is needed.
• The future is electrified but the coupling electricity and heating & cooling sectors is key to achieve electrification
• Thermal energy storage, such as BTES, can potentially increase efficiency, avoid future investments, handle bottlenecks, free valuable space in cities, district heating & cooling systems.
Flexibility, including thermal storage, can reduce future peak power capacity with 50 % in the NordicsA transition with and without flexibility è Less dispatchable & expensive capacity and more variable wind can cost effectively be integrated
Source: International Energy Agency / Nordic Energy Research (2016), Nordic Energy Technology Perspectives 2016
0
2
4
6
8
10
12
14
16
Base Flex2050
GW
Nordic countries (2050)
Natural gas Natural gas with CCS
0
10
20
30
40
50
60
70
Base Flex2050
GW
Nordic countries (2050)
Wind
Seasonal storage a game changer for flexibility in both district heating and electricity systems? …but not cost efficient today
Source: Diagram from: Roman Geyer, Ralf Roman Schmidt, AIT: Infrastructualchallenges in District Heating and Solar Solar District Heating:Joined Workshop IEA DHC Annez TS2 IEA SHC Task 55, 10th opf April Graz
CHP heatHeat pumpHeat from electric coolingElectric boilers
El price
Novel concepts for integration of thermal storage in district heating systems
CHP
Heat only boilersWaste heatFlue gas condenserLarge scale heat pumps
0) Store’steam’
> 225 °C
A) Centralized
ca 90-120°C
B) Bottlenecks/flaskhalsen
ca 75 °C
C) Near buildings
45-65 °C
D) Within the building-customer/end user
21-65 °C
Source: Oskar Räftegård, RISE, work in progress from the project ”Techno-economical comparison of TS-technologies that can be used in DHC”
What is needed to realize the thermal storage potential?• Technical barriers, a few examples:
– The investment cost and performance of seasonal storage need to improve
– Very few real world examples – high risk investment
– Not adopted to todays operating temperatures levels
– Additional peak capacity may be needed
Thermal energy storage – R&D-program 2018-2020
• Overall aim: – Decrease the risk in investment in new
thermal storage technologies– Greater knowledge of how, where and
when thermal storage can be designed and used, and what benefits they can provide.
• Duration: April 2018 – December 2020
• Budget: 1.3 M€ (0.78 M€ funded by Swedish Energy Agency)
• Supported by 11 DHC-utilities, 5 technical consultant firms.
• Seven different R&D-projects initiated… so far
Fredrik Martinsson [email protected]
Thermal storage: 3 R&D areas 6 projects
Fredrik Martinsson [email protected]
R&D areas Project title Organisation-Project leader Budget, €
Tech
nolo
gies
and
sy
stem
des
ign Techno-economical comparison of TS-
technologies that can be used in DHC RISE - Jenny Holgersson 70 000
The value of seasonal storage in district heating systems Profu – Håkan Sköldberg 120 000
Distributed cooling storages in district cooling networks KTH - Viktoria Martin 356 250
Geoenergy CHP interaction with borehole-storage - model developments KTH - José Acuna
240 000
Pilo
t pro
ject
s Pressurised borehole storage for high temperatures
Bengt Dahlgren - José Acuna 205 000
Hybrid solution for borehole-storage < 100 CLKAB Wassara - Stefan Swartling 105 500
Thermochemical energy storage with multifunction, EnerStore LowTemp
SaltX Technology/Alfa Laval – Christofér Rehn 160 000
More information can be found here: http://www.energiforsk.se/program/termiska-energilager/
Agenda for today – before lunch09:00 Welcome words and Introduction to research programs
Fredrik Martinsson, program manger Thermal energy storage, EnergiforskKirsti Midtömme, project leader RockStore, CMR NORCE
Block 1. Design tools and simulations
09:40 Project 1 (Sweden): Development of a tool for design and operationMax Hesselbrandt, Willem Mazzotti, Mohammad Abuasbeh, José Acuna, KTH
10:00 Project 2 (Norway): Simulation of High Temperature Borehole Thermal Energy StorageHanne Kauko & Karoline Kvalsvik , SINTEF
10:20 Coffee
Block 2. Pilot projects
10:40 Pressurized boreholes for high temperature bore fieldsTony Jernström and José Acuña , Bengt Dahlgren
11:00 Deep boreholesThor Erik Musæus, Rock Energy
11:20 New Hybrid design of HT-BTESStefan Swartling, LKAB Wassara
11:40 HT-BTES project in Helsinborg, Southern SwedenClaes Regander, Sweco and Mutaz Alkiswani, Öresundskraft
12:00 Lunch with short introduction to the Technical Tours
Agenda - after lunch13:00 Internal workshop Termiska Energilager and Rockstore
(Only for active project participants)Fredrik Martinsson in room M235
13:00 Tour 1: Aquifer Thermal Energy Storage. Bus departs outside Brinellvägen 68 at 12:45. Returns to KTH at about 14:45
14:45 Tour 2: Borehole Thermal Energy Storage. Bus departs outside Brinellvägen68 at 15:00 and returns to KTH at 16:45
14:45 Tour 3: KTH Live-in-lab (The tour starts with a short walk departingBrinellvägen 68 at 15:00)
17:30 Dinner: The buss departs from Brinellvägen 68 at 17:30. Comes back from the Wenngarn Castle at 23:30 and arrives at KTHs subway station at aboutmidnight
Tomorrow
Program DAY 4: Drillers day. EXPO and Seminarswww.brunnsborrardagen.com