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Subtasks
Subtasks
- Subtask A - Process heat collector development and process heat
collector testing
- Subtask B - Process
integration and Process Intensification combined with
solar process heat
- Subtask C - Design
Guidelines, Case Studies and Dissemination
Subtask A - Process heat collector
development and process heat collector testing
Lead Country:
Switzerland (Dr. Elimar Frank - SPF)
In this Subtask, the further development, improvement and
optimisation of collectors, components and the collector loop is
investigated. All types of solar thermal collectors for an operating
temperature level up to 400°C are addressed: Uncovered collectors,
flat-plate collectors, improved flat-plate collectors (for example
hermetically sealed collectors with inert gas fillings or vacuum) with
and without reflectors, evacuated tubular collectors with and without
reflectors, CPC collectors, parabolic trough collectors, Fresnel
collectors, air collectors etc. It should also prepare the bases to
identify and select the most suitable collector technology for a given
application. It is assumed that for all activities of this subtask the
temperature range will have to be separated in several segments. For
instance, up to around 200°C water and steam can be used as heat
carriers with acceptable pressure. With higher temperatures and with
choosing another heat carrier (e.g. oil) the boundary conditions change
substantially. A simple up-scaling of the results from the
investigations and recommendations for the temperature range up to 200°C
or 250°C will not be possible. This is true both for the investigations
aiming at improvements of the solar loop as well as for recommendations
with regards to test rigs, testing procedures and standardization.
Based on existing approaches, methods and parameters for the assessment
of the collector and solar loop performance as well as of the impact of
the properties of materials and components will be developed and
identified. Appropriate durability tests will be applied to specific
materials / components to allow the deep understanding of the collector
and solar loop behaviour for all possible operation conditions and the
prediction of service life time.
Based on the investigation of the dynamic behaviour of solar process
heat collectors and loops (both experimentally and theoretically),
recommendations for process heat collector testing procedures will be
worked out.
Subtask A has three main objectives:
- Improving solar process heat collectors and loop
components
- Providing a basis for the comparison of collectors
with respect to technical and economical conditions
- Giving comprehensive recommendations for
standardized testing procedures
The participants will achieve the objectives by
- updating the IEA SHC Task 33 state of the art survey
of process heat collectors
- increasing the knowledge of general requirements and
relevant parameters for process heat collectors and
their improvement
- determining parameters for
- modelling collectors in simulation programs to
reflect the realistic performance of medium temperature
collectors in process heat systems and
- comparable measurement data evaluation also from
dynamic data for different locations, applications etc.
- developing and/or improving collectors, components
and solar loops for process heat applications in
co-operation with the involved industry. The main
aspects are performance, reliability and cost
effectiveness. Both new or improved collector or
component/solar loop concepts and design details will be
addressed
- investigating the collector behaviour by collector
testing at high temperatures and by the evaluation of
measurement data from existing plants
- investigating material aspects for collectors with
up to 400°C operating temperature and system components
- investigating the overheating behaviour of large
medium temperature collector fields
- measurements on the thermal performance of other
components and solar loops of solar thermal systems
operating at high temperatures
- elaboration of recommendations for collector testing
standards for the medium temperature level
Special effort will be made to involve the solar industry in the
analysis of all working fields, e.g. through industry-dedicated
workshops (compare Subtask C).
Proposed activities in this subtask are the following:
A1. Improvement of solar process heat collectors and loop
components
(SPF, CIEMAT, ITW Uni
Stuttgart)
In order to support the development and improvement of cost effective
and at the same time well-performing and reliable process heat
collectors, the appropriate requirements are investigated. It shall be
described and evaluated which parameters have to be taken into account
for the development and improvement, which ones are more important than
others and which kind of measurements can enhance the
development/improvement. Also material topics and the accuracy that is
necessary will be discussed and described.
Characteristic parameters will be determined for both modeling
collectors in simulation programs to reflect the realistic performance
of medium temperature collectors in process heat systems and comparable
measurement data evaluation for different locations, applications etc.
Beside dynamic operating conditions of collectors (especially for high
temperatures) also the dynamic behavior of large collector fields will
be investigated.
Regarding the high temperature behavior of process heat collectors
and solar loop components, the overheating of collectors and large
fields will be investigated. For the integration of solar heat into
industrial processes it is very important that the systems operate
totally reliable in all the operation modes that may occur. In this
respect, special emphasis has to be put on the aim that the solar
thermal systems can handle stagnation or overheating situations without
any danger of failure and without the need for additional maintenance
works. Whereas for collectors with stagnation temperatures lower than
e.g.250°C stagnation has to be regarded as a normal operation mode of
solar thermal systems, this has to be investigated and analyzed for
collector concepts leading to higher temperatures when there is no sink
for the solar heat (e.g. times without industrial production because of
weekends or vacation times, but also technical faults like the breakdown
of a pump etc.). In this context, also the terminology “stagnation” will
have to be discussed and adapted with respect to process heat collectors
as for collectors aiming at high usual operation conditions overheating
will lead to severe material problems. The influences and consequences
of stagnation/overheating on the collector loop fluids and components
will also be addressed and solutions (avoidance of
overheating/stagnation by conceptual approaches, coolers, …) will be
developed. The aim is to develop techniques to handle stagnation
situations in large medium temperature collector fields.
Not only stagnation, but also the (dynamic) behavior of the
collectors and the collector loop is of interest. Investigating the
collector behavior will be done by collector testing at high
temperatures and by the evaluation of measurement data from existing
plants. Also, material problems for medium temperature collectors up to
400°C operating temperature and system components will be investigated,
such as heat carriers, insulation etc. If possible, these measurements
will be carried out in existing systems and in laboratory measurements
in order to be able to realistically model medium temperature systems
and to give proper recommendations for testing procedures.
With all the knowledge gained, even some of the collectors already
available on the market for up to around 100°C could be modified to be
used for higher temperatures. Furthermore, there is a considerable
potential for the improvement of existing process heat collectors in
many aspects. New collector developments and improvements will lead to a
better cost/performance ratio as is presently achieved for medium
temperature systems. The collectors to be investigated are for example,
double glazed flat plate collectors with anti-reflection coated glazing,
hermetically sealed collectors with inert gas fillings or vacuum (with
and without reflectors), CPC collectors, evacuated tubular collectors
with and without reflectors, parabolic trough collectors, Fresnel
collectors etc...). In these activities, investigations on materials
suitable for medium temperature collectors will play an important role.
Beside developing and/or improving collectors, also other components
and whole solar loops for process heat applications will be analysed and
further developed in co-operation with the involved industry. The main
aspects are performance, reliability and cost effectiveness. Both new or
improved collector or component/solar loop concepts and design details
will be addressed and improved peripheral devices are aimed at (e.g.
tracking with high accuracy, collector connections, …).
In order to achieve an improved performance / cost ratio for
collectors for industrial processes, the reliability of collectors and
their service life time is important. Moreover, in the development of
medium temperature collectors, new materials and components will be
used. This concerns the full width of collector technologies from
flat-plate collectors to vacuum tubular collectors and parabolic trough
collectors, e.g. reflectors (including their mechanical support),
tracking devices, glazing and absorbers addressed.
Representative and realistic test samples will be identified and
prepared. Relevant performance parameters will be defined and
characterisation procedures will be established. Existing durability
test procedures will be investigated and adapted where required.
Adequate accelerated ageing tests will be developed as a basis for
longevity assessments.
Summarizing, the overall aim of this activity is to achieve
improvements optimizing the combination of thermal performance,
collector costs and durability for process heat collectors.
A2. Comparison of collectors with respect to technical and
economical conditions
(SPF)
In this activity, the results of A1 are used and extended. Areas and
suitable boundary conditions and parameters will be identified where a
comparison of different collector types is possible. A matrix will be
developed as a help tool for a classification of process heat collectors
(e.g. temperature level, power, field size, fluids, climate,
application, …). It will be decided how process heat collectors should
be characterized to make them comparable. This all will help for further
system design decisions.
In order to carry out simulation calculations, those parameters need
to be identified which describe the performance of all system components
with the required accuracy. Measurements of the thermal performance of
all system components - besides the collector - (i.e. heat exchangers,
storage, pipes, etc) of solar thermal systems will be carried out and
the available information will be collected. If possible, these
measurements will be carried out on existing systems or in laboratory
measurements in order to be able to realistically model medium
temperature systems.
The aim is to elaborate suitable sets of parameters that allow
simulating complete medium temperature systems with the required
accuracy, in order not only to compare collectors but to help planners
to make design decisions for the whole solar loop and for further pilot
and commercial systems that have to be operated successfully.
A3. Comprehensive recommendations for standardized testing
procedures
(SPF, CIEMAT, ITW Uni Stuttgart)
There is a broad range of experience in collector testing for
operating temperatures below 100°C. Most of the testing laboratories
carry out the tests with water as the fluid and up to a maximum
temperature of less than 100°C. Therefore, only very few test results
are available for higher operating temperatures. In simulation programs,
an extrapolation of the collector performance determined at moderate
temperature levels (up to 100°C) is made to describe the collector
performance at higher temperatures. These extrapolations often have a
high uncertainty resulting in system design calculations with uncertain
component dimensioning results. The present situation is undoubtedly a
major obstacle in designing medium temperature process heat systems with
the needed accuracy for successful pilot systems.
Therefore the testing of suitable collectors at medium temperatures and
the exchange of experiences amongst different testing laboratories is
very important. The possibilities for round-robin tests on a medium
temperature collector with efficiency measurements at 160°C or higher
will be evaluated. Depending on the findings and the respective
financing, such tests will be carried out. The results will be discussed
with respect to improving the testing procedures in the ISO 9806 and
EN12975 standards. A comparison of outdoor and indoor measurements
(using solar simulators) will be carried out.
An important task for the wide spread commercial application of solar
collectors in industrial processes will be the development of test and
qualification standards allowing to assess such different technologies
as flat plate collectors (stationary, using global radiation) and
parabolic troughs (tracking, using direct radiation) with a view to
their respective suitability for a particular application (in terms of
the degree of compliance with specific requirements). During the last
years, the methods used for non- or low-concentrating collectors have
been partially extended to concentrating systems. Different progress can
be seen in different countries and for different aspects, but a
comprehensive test standard is not yet in sight that includes also
quality testing, tracking accuracy etc. Therefore, based on the
measurements described above and the further work described in this
Subtask, significant steps towards such a "unified" standard shall be
achieved. This would be a major added value for the co-operation between
IEA, SHC, and SolarPACES, helping potential customers and manufacturers
to plan and operate solar process heat plants with high performance,
reliability and safety. However, it has to be mentioned that this will
be a challenging task due to the inherent differences of the
technologies to be characterised. Also, specifications for suitable test
rigs are needed and decisions which tests can be carried out in labs
(indoor/outdoor) and/or field tests (e.g. mobile test rigs to be used
for instance at demonstration sites). The aim is that two of those test
environments shall be in operation during the time of this Task and
different collector types shall be tested. The development of
(recommendations for) testing procedures will be done in cooperation
with other IEA SHC Tasks that also have the aim to develop testing
standards (e.g. the follow-up Task of IEA SHC Task 38 (solar cooling)
and IEA SHC Task 43).
For the collector tests, not only the thermal performance but also
aspects such as safety (high temperatures and high pressure) and
environmental safety will be important (e.g. in case of using oils as
heat carriers).
Besides collector testing, also the testing of collector components
and solar loop components will be addressed. This comprises sub
components like mirrors, receivers etc. and also ageing behavior tests
and tests for the optical accuracy. For these tests, not only test
procedures but also specifications for suitable test rigs will be worked
out.
The overall aim of this activity is to elaborate recommendations for
collector testing standards for the medium temperature level and to
contribute to a unified standard for medium temperature collectors.
Deliverables
A1 Improvement of solar process heat
collectors and loop components:
- Definition of general requirements and relevant
parameters for process heat collectors and their
improvement [SPF, DLR, ISE, AIT, Industrial Solar]
- Report on overheating/stagnation issues including
the high temperature behavior of the investigated
components [AIT, SPF, all]
- Brochure on State of the Art of process heat
collectors and solar loop components
A2 Comparison of collectors with respect to technical and
economical conditions:
- A compendium to figure out the appropriate collector
for an application [ISE, UIB, SPF, collector
manufactures]
A3 Comprehensive recommendations for standardized testing
procedures:
- Different kind of test reports and procedures:
- Sub components (tracking, receiver,
mirrors, glasses, …) [DLR, ISE, SPF]
- Collector laboratory tests [SPF,
ISE, AIT]
- Collector field tests [DLR, ISE,
SPF]
- Service life time test procedures
for collector components of medium
temperature collectors.
A4 Subtask report.
Subtask B - Process integration and Process Intensification combined
with solar process heat
Lead country:
Austria (DI Bettina Muster - AEE INTEC)
The general methodology for the integration of solar thermal energy
into industrial processes was developed during the IEA SHC TASK 33/IV.
It was shown that the pinch analysis for the total production site and -
building upon it - the design of an optimized heat exchanger network for
the production system is one of the best approaches for an intelligent
integration. Due to the fact that in the identified industry sectors
with high potential for solar integration very often production
processes are running in batches, the developed pinch methodology can
only be a rough estimation of the real profile of heat sources/sinks.
Additionally it has been proven that the adaptation of existing heat
management strategies (operation of storages) can help to integrate
solar thermal plants more efficiently. In order to fulfil these needs of
further improvements to model the real heat management of a production
system it is necessary to further develop the existing methodology and
software tools. This advanced process integration will additional
consider time dependency of the production profile, the integration of
heat storages and the optimized design and management of all heat flows
within the production system. The aim is to reach further reduction of
the companies’ energy demand and an ideal condition for solar
integration.
Within the solar community there is still an open discussion whether
the ideal integration for solar heat under certain circumstances is the
integration on process temperature level over low temperature collectors
or whether the integration of high temperature collectors into the
distribution system is economically favourable. The technical and
economical feasibility of both integration types for certain
applications needs to be compared to serve as reference case studies.
Based on decision criteria and in close cooperation with solar yield
studies (subtask C), the decision on different integration strategies
shall be analysed.
Beside the system optimization by the pinch analysis a technology
optimization of the applied process technologies will also reduce the
energy demand and increase the potential for solar thermal integration.
Process intensification (PI) can be seen as a key word for emerging
technologies which achieve the framework conditions for effective, solar
(thermal and/or UV) driven production processes. Process intensification
can be described as any engineering development that leads to a
substantially smaller, cleaner, and more energy efficient technology. PI
may lead to higher process flexibility, smaller equipment size, improved
inherent safety and energy- & process efficiency, decentralized
production sites requiring independent energy supply and lowered process
temperatures. In general Subtask B aims to bring together know-how and
studies to answer the following research question on a sufficiently
profound basis: Can developments of new technology concepts (PI in
combination with solar thermal systems) lead to enhanced potential for
solar integration in industry?
On the one hand existing processes can be replaced by new
technologies and thus the potential of the integration of solar thermal
energy will increase. The second approach is to identify new
applications where up to now solar thermal energy was not used as energy
source. This includes detoxification and disinfection of industrial
waste water or the upgrading of boiler feed water by solar driven
membrane distillation processes.
Based on the foreseen topics Subtask B will be done on following
structure:
- Advanced integration (pinch analysis and storage
management, decision where to integrate solar heat on
industrial site)
- Integration on temperature levels up
to 400°C, methodology for decision on
integration types incl. thermodynamic
and cost factors
- Integration at
process level, at
distribution level,
combined integration for
several processes,
combined integration
with other heat sources
- Integration
methodology: focus on (mis)match
between supply and
demand
- Consideration of
material aspects,
specific heat transfer
requirements concerning
process fluids
- Definition of requirements of
necessary “components” for system
integration (e.g. advanced heat
exchangers, advanced system control
strategies, collectors (stagnation
issues, load profiles, temperature)
[link to subtask A])
- Combining Process Intensification technologies and
Solar process heat:
- For existing processes
- In new applications (not limited to
thermal processes)
In general Subtask B will focus on following main objectives:
- Improved solar thermal system integration for
production processes by advanced heat integration and
storage management, advanced methodology for decision on
integration place and integration types
- Increase of the solar process heat potential by
combining process intensification and solar thermal
systems and fostering new applications for solar
(thermal/UV) technologies
The activities proposed for this subtask are the following:
Advanced integration
B1. Development of advanced pinch and storage management tool(s)
Partners with projects in this field:
AEE INTEC, DLR
Partners (projects have to be confirmed): Uni Kassel, HFT Stuttgart,
ZAFH (Zentrum für Angewandte Forschung in Stuttgart), University of
Pannonia, University of Manchester
Bringing together the know-how and expertise of several experts dealing
with heat integration and heat management tools, one ore more tools
shall be developed to identify ideal integration place of solar heat in
industrial processes. The tool shall be able to model current heat flows
incl. their real-time profiles (batch or continuous processes with
varying loads) and optimize the system via heat integration and ideal
heat management. This detailed knowledge of the improved heat management
of the whole production system shall allow planners to choose the ideal
place to integrate solar thermal heat.
In a second step solar heat flows can be integrated into the tool to
assess the heat flow management strategies incl. solar thermal
integration.
The tool(s) will be applied in several industrial case studies to
prove their performance.
B2. Survey on integration methodologies for solar process heat
Partners with projects in this
field:
Partners (projects have to be confirmed): DLR, PSE, SPF, AEE INTEC
The activity will deal with specific case studies that are carried
out for specific applications where the integration of low temperature
collectors on the process level is compared with the integration of high
temperature collectors within the distribution system. Studies will be
done for applications in different regions. A close co-operation with
Subtask C is foreseen, as the results from the generic study (which
collector is feasible for which temperature range in which region) will
be integrated into the work. The outcome of the case studies will be
part of the performance assessment methodology work done in Subtask C.
B3. Develop System concepts and integration guideline
Partners with projects in this field: AEE INTEC (food industry)
Partners (projects have to be confirmed): Kassel, Fraunhofer ISE, DLR,
SPF, SOLID, PSE, TCS, Industrial Solar GmbH, Greenonetec, TU Graz
As a part of the planning guideline done together with subtask C, the
results from the activities B1 and B2, as well as the results of
existing studies and demonstration projects and several discussion
meetings will be integrated into a solar integration guideline. This
document shall guide the future planner or installer of solar process
heat from process optimization up to decision where to integrate solar
heat and with which collector type. Results from the work done in B4-B6
shall as well be included. The guideline will include the following
aspects:
- Integration into the overall heat management system (incl.
storages)
- Low temperature applications and related system concepts
- high temperature applications / steam generation and related
system concepts
- Consideration of aspects such as circulation, electricity
demand, available space
- Checklists for ideal integration, “Asking the right questions”,
list of do’s and don’ts
- Definition of requirements of necessary “components” for system
integration (e.g. advanced heat exchangers, advanced system control
strategies, collectors (stagnation issues, load profiles, temperature)
In the framework of this work the “matrix of indicators” established
within IEA SHC Task 33 will be extended. (http://wiki.zero-emissions.at)
Combining Process Intensification technologies and Solar process heat
(New process technology concepts and component development ) B4. Survey and dedicated Workshop on new process technologies
Partners with projects in this field:
Partners (projects have to be confirmed): AEE INTEC; DLR; TU DELFT, AIT,
TU Graz
To provide a sound basis to the work foreseen and stimulate the know-how
exchange between experts from conventional process technologies with
solar process technologies, a dedicated workshop will be done for new
process technologies that can potentially be driven by solar. Close
cooperation with Solar Paces Task 6 and Task 2, as well as dedicated
platforms (EFCE Working Party on PI, EUROPIC) is foreseen. A survey will be done based on the input of all experts and based on
scientific literature to provide a list of possible new process
technologies that might stimulate the potential of solar process heat or
solar UV in processes. B5. Compendium of ongoing activities and existing pilot plants/case
studies
Partners with projects in this field: DLR
Partners (projects have to be confirmed): AEE INTEC, TU DELFT, TU Graz
A compendium will be done compiling current trends in process technology
change and new technology developments. Results from existing pilot
plants and case studies will be collected and integrated into the
compendium. Next to new trends in thermal processes that can enhance
solar process heat trends in solar water detoxification, solar water disinfection and
solar driven reactions will be integrated, as well as results from case
studies and pilot plants. B6. Identification of the increasing potentials for solar thermal
process heat through combination with PI technologies
Partners with projects in this field: AEE INTEC (food industry), DLR
(solar water treatment)
Partners (projects have to be confirmed): TU DELFT, TU Graz
Based on the compiled list of potential new process technologies for
solar (result from B4) the potential to foster the use of solar thermal
process heat via these new technologies will be identified. This
identification will be done based on calculations, simulations and
existing case studies and pilot plants (integrating the results from
B5). New calculations/simulations for new process configurations will be
done for selected processes. Selection criteria will elaborated to
enable the focus on potential processes. The results for B6 will be integrated into the integration guideline and
the “matrix of indicators” (B3). Following deliverables are defined for Subtask B: Deliverables:
- B1. Advanced pinch and storage management tool
- B2. Integration
guideline (methodology for advanced integration, system concepts,
guidelines on integration types, checklists etc.)
- B3. Extended matrix of indicators (http://wiki.zero-emissions.at)
- B4. Catalogue of additional required components for advanced integration
- B5. Report on
potential for enhancement of solar integration with new process
technologies (based on (existing) case studies)
- B6. General booklet of Subtask B
- B7. Subtask B final report
Subtask C: Design Guidelines, Case Studies
and Dissemination
Lead country:
Germany (Dr. Werner Platzer - Fraunhofer ISE)
The main objective of this Subtask is to provide information and
planning methodologies to solar manufacturers, process engineers,
installers and potential buyers (industry). This shall support the
marketing, planning and installation phase of future SHIP plants. Experience and results from pilot projects covering a broad variety of
technologies in suitable applications representing a significant part of
industrial process heat consumers (in terms of size, temperature levels,
heat transfer media, load patterns, etc.) shall be evaluated. The
operation of projects will be monitored for a representative period to
provide feedback on the design and operation concept as a basis for
future development and improvements. "Best practice" reference cases
shall encourage other potential users to employ these technologies.
Tools for a simplified performance assessment and conceptual planning
shall be developed. Regional market surveys, case studies and financing
schemes will be investigated which should facilitate the market
introduction of solar process heat. The objectives of this Subtask are:
- to provide a worldwide
overview of results and experiences from solar heat for industrial
process systems. This includes the evaluation of completed and ongoing
demonstration system installations using monitoring data, as well as
carrying out economic analyses.
- to develop a
performance assessment methodology for a comparison and analysis of
different applications, collector systems, regional and climatic
conditions
- to support future
project stake holders by providing design guidelines, simplified fast
and easy to handle calculation tools for solar yields and performance
assessment
- to solutions for
stagnations behaviour , control and hydraulics of large field
installations
- to identify, address
and lower the barriers for market deployment by giving examples of
successful implementation, by describing suitable financing and
incentive schemes, and develop relevant project constellations (e.g. )
- to disseminate the
knowledge to the main target groups involved: solar manufacturers,
energy consultants, process engineers, installers and potential buyers
(industry), and policy makers and platforms.
For the work packages described below one partner from each
participating country will be responsible for the sub-coordination,
documentation of the state-of-the-art and dissemination of results. Proposed activities in this subtask are the following:
C1. Design Guidelines
(ISE, all)
Development of a design approach described in structured guidelines and
using checklists, giving guidance with respect to the criteria and
sequence of decisions during the system design process. In a first step
information from projects (within the participant group but also
worldwide) have to be collected. The experience of companies about
problems and customer needs have to be included. Technically several
issues have to be dealt with, such as solar thermal design, stagnation
behaviour, hydraulics, control strategies and integration possibilities.
By condensing and structuring the information an approach leading from
the analysis of the intended application (with methods developed in
Subtask B) through evaluation of different technological solutions to
the definition of basic system design parameters (e.g.: size and
temperature level of the solar contribution) and to the selection of
appropriate components will be developed and published as a
comprehensive guideline.
C2. Numerical Simulation Tools
(DLR, ISE, AEE, SPF, UniK, evtl. Vela
Solaris, Aiguasol, Valentin)
Based on the testing results for collectors and subcomponents, a model
library (TRNSYS, Greenius, evtl. Other commercial tools) will be
extended to include standard industrial consumer models and appropriate
collector and component models (if not yet available).
In order to be able to perform complete and detailed system simulations
"standard" project configurations based on results of Subtask B process
integration will be created, including information on weather and load
profiles and a data base of default values and component parameters (as
far as available).
The tool finally developed shall have a simple and fast to use user
front-end. We will try to contact and isupport commercial developers (e.g
Polysun, Tsol,…) to develop their products further on. A transparent and
precise documentation of models used in the numerical simulation engine
gives other software developers the possibility to include the same
models in their source codes and tools. C3. Performance assessment methodology
(ISE, DLR, AEE, UniK, SPF,
manufacture, Polimi, Tecsol, AIT)
In order to be able to compare different system approaches and projects
we need to develop a performance assessment methodology reaching
from the documentation of input assumptions, definition of necessary
evaluation criteria to the presentation of results in a defined output
sheet.
For that a proper definition of subsystems and interfaces has to be
given. We have to address especially the comparison of high-temperature
concentrating collector systems and non-concentrating integration
schemes possibly using generic study collector types, regions,
temperature levels and costs (input to Subtask B). The different fluid
and steam networks have to be specified for those cases. In combination
with Subtasks B case studies for promising applications identified will
be carried out in close co-operation with interested industries. An
economical analysis has to be included. C4. Monitoring of demonstration projects and “Best practice” projects
(UniKassel
ISE, DLR, AEE, SPF, SOLID, Tecsol, AIT, international participants )
We will start with an overview list of existing plants, quoting the
basic specifications published. Out of these non-confidential
projects possibly with participation of task participants will be
selected. For these cases, either under construction or already
operating, the evaluation and analysis of monitoring data will be
tackled based on a homogeneous approach within the Task. A comparison to design objectives, design assumptions and component
performance will be possible by using these data. Special emphasis will
be given the hydraulic management of large process heat collector fields
and the problems and solutions connected to stagnation behaviour. After identification of successful projects with positive results in
different application fields a documentation of these “Best Practice”
projects will be published. C5. Dissemination of task results
(PSE, all)
In this work item we will tackle the general dissemination of Task
results. It is intended to organize expert / industry workshops every
year, directly linked to Task meetings.
The overall scope and objectives of the Task and the different Subtasks
will be described on a public website, possibly the IEA SHC-Task
Website. The server should be able to process an automatically
distributed electronic newsletter.
Apart from publications of scientific results in conferences, journals
and magazines we would like to distribute printed leaflets to describe
to scope of the Task. Similarly there is a recognized need to process
information from worldwide stakeholders also outside the IEA SHC Task,
and to start educational missions to relevant countries in the
developing and developed world. These activities will be hardly financed
on a national level. C6. Market deployment
(SOLID, UIB/TSC, Ind. Solar, Tecsol, Soltigua,
other industries )
In a basic step we will identify barriers for market deployment and
describe and discuss them. As possible support to overcome the barriers
contracting models (ESCO schemes) and project finance schemes will be
investigated for different industries and countries. Feasibility studies of existing projects will be used to find levels for
the development of national and international supporting schemes. The
topic of risk management for innovative technologies will be discussed
and solutions proposed. The participants will connect to policy makers
and stakeholder platforms in order to spread results, ideas and models
developed within this activity. C7. Potential study
(AEE INTEC, all participants, in combination with
Subtask B)
In a potential study we will investigate different markets, industries
and different countries
The potential study has to reflect the various boundary conditions and
technological approaches, where the current low temperature studies will
be extended to higher temperatures. This means also the discussion of
different process integration routes.
NB: At the moment there is yet no participant funded for such an
extensive potential study. Deliverables
- Publication of Design guidelines for solar
industrial process heat systems
- Numeric simulation tool for solar industrial
process heat components
- Software tool for fast feasibility assessment
including economic analysis
- Report on Performance assessment methodology and
simulation case studies
- “Best practice” series of case study reports from
demonstration projects
- A subtask report.
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