Large solar thermal systems - Celsius Initiative...Solar thermal concept • 10.000 m2 solar thermal...
Transcript of Large solar thermal systems - Celsius Initiative...Solar thermal concept • 10.000 m2 solar thermal...
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Large solar thermal systems (> 1 MW)
• Project development
• Design & engineering
• Construction
• Operation & maintenance
• Research & development
SOLID Portfolio
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
OBJECTIVE:
To demonstrate a highly replicable, cost-effective and high
energy efficiency large scale energy generation system, that
will allow sustainable urban planning of very low energy city
districts
PITAGORAS Main Objective
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
“Sustainable urban Planning with Innovative and low energy
Thermal And power Generation frOm Residual And renewable
Sources”
pitagorasproject.eu
EC / FP7 funded Smart City Project
Duration: 4 years (Nov 2013 – Oct 2017)
PITAGORAS project focuses on the efficient integration
of city districts with industrial parks through smart thermal grids
Technologies and concepts for low and medium temperature
waste heat recovery and heat supply to cities will be developed
and demonstrated
PITAGORAS – SCOPE
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Implementation Objectives:
Implementation of 2 demonstration plants to test and validate
the developed systems and concepts in real conditions
Demonstration 1:
Brescia (Italy): medium/high temperature waste heat recovery
(600ºC) from a steel foundry and ORC unit (2,1 MWe) for heat and
power generation including heat storage. District heating to a city
district nearby
Demonstration 2:
Kremsmünster (Austria): ESCo project (Energy service – selled heat)
Large solar thermal plant (5 GWth/a ≈10.000m2 collector area)
feeds in seasonal thermal energy storage, connected to industry for
waste heat recovery. District heating to a city district nearby
PITAGORAS Demonstration
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
DH grid of Kremsmünster
• 30 year old DH grid
Design Temperatures 80/60 and 80/65 °C
• 65% of the heat consumed in the city covered by DH
(20 GWh/year)
• Sources of the DH:
- CHP plant of RAG 75%
- Gas boiler for peaks 17,5%
- Biomass heating plant + waste
heat from a glass manufacturer 7,5%
Kremsmünster
Kremsmünster – Pilot plant description
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Company RAG= Raw oil
prospecting and processing
company
• Oil production
• CHP plant currently
supplies electricity for RAG
and feeds in heat for DH
grid + additional gas boilers
• CHP heats 4 x 60.000m³ oil
tanks designed for 55/20
or 46/10°C
• Each storage 1.500kW
nominal thermal capacity
Kremsmünster – Pilot plant description
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Solar thermal concept
• 10.000 m2 solar thermal system
with flat plate collectors
• 300 m³ buffer storage
• 3 different integration points:
a. Feeding in DH
b. Pre-heating of raw oil
c. Heating of 4 x 60.000m3 oil
tanks up to approx. 30°-
40°C STES “Seasonal
Thermal Energy Storage”
SOLAR
Kremsmünster – Pilot plant description
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Oil tanks as “seasonal storage”
• Currently heated by CHP – waste
heat to keep oil at 23°C, in winter
time gas boiler is also needed
• Using temperature up to ~ 35°C
for seasonal concept
• Buffering surplus heat from solar
thermal system at low temperature
(= high efficiency of solar collectors)
from summer to winter; gas savings
in winter time!!
Kremsmünster – Pilot plant description
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Kremsmünster – Pilot plant description
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Kremsmünster – Hydraulic Scheme
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Kremsmünster – Existing Oil Tank
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Conversion of Oil Tank into STES
• Check of detailed construction and statics of the existing tank fits to
a usage as a STES (Seasonal Thermal Energy Storage)
• Inventory survey of the conditions of the construction of the STES
itself and the envelope (e.g. use of existing heat exchanger)
• Simulations to derive necessary refurbishment of the envelope and
charging and discharging devices (TRNSYS)
• Development of a variant of conceptual designs for the conversion of
the existing tanks into a STES
• Economic analyses of different variants to find the most economic
one - Result: most economic conceptual design for the conversion
of the existing tank into a STES
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Kremsmünster – Chosen Concept STES
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
•Saving of 3,5 to 5 GWh of fossil fuels
•Substitution of Gas BoilerEnergetic
•Reduction of Greenhoouse gas: appr. 1500 tons/yearEnvironmental
•Efficiency increase of CHP plant
•Economic savingsIndustry
•Peak loads covered
•Significant share (25%) of RESCity / DH net
•High replicable system withmultiplication factorPITAGORAS
Kremsmünster Plant – Calculated
Impact
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Austrian Demo failed
• Barrier low oil price: RAG has been heavily hit by the decline of oil and
gas price
• All service contracts to RAG have been cancelled including heat
delivery contract between RAG and solar.nahwaerme
• Oil exploration projects had been stopped
• RAG cut down their business in 2015 tremendously (situation in 2016
is not known by today)
• RAG General Director actually was in favor of the solar/storage
project and is willing to vitalize the project in future, but no realization
within PITAGORAS frame is possible due to missing funding
• RAG did not allocate costs for the project development to PITAGORAS
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Non-technological Barriers
General non-technological barriers for implementation of a demo like
Kremsmuenster:
• Low awareness on the demand side takes much time to convince
clients not only of the technology, also of the energy and cost savings
• Problems in implementing ESCO projects in public sector are higher
than in industry
• Financial institutions are not willing to finance ESCo projects or
provide bad lending practices
• Lack of standardized documents and procedures
• Low energy (gas/oil related to PITAGORAS) prices
• Lack of energy consumption data in many cases
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
How to overcome the Barriers
What is needed?
• More awareness raising activities workshops, preparation and
dissemination of promotional materials, presentation of projects
results at conferences etc. for industry and DH Utilities
• Description and analysis of successful projects
• Heat delivery contract templates for projects that will facilitate
implementation of projects for potential clients and potential ESCo
companies that are interested in realization of ESCo projects involving
solar energy, seasonal storages and DH integration etc.
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
PITAGORAS as Door Opener for BIG
SOLAR in Graz – Concept developed
This project has received funding from the European Union’s Seventh
Programme for research, technological development and demonstration
under grant agreement No 314596
Thank you very much for yourattention
Thank YOU for your attention!