Task 48 - Quality Assurance and Support Measures for Solar Cooling


Final report on Contracting Models for Solar Thermally Driven Cooling and Heating Systems
Task 48 - C6 activity final report
September 2014 - PDF 1.99MB
By: Moritz Schubert & Sabine Putz, S.O.L.I.D. Gesellschaft für Solarinstallation und Design mbH (s.putz@solid.at)
Editor: Daniel Mugnier
The IEA Task 48 focuses on projects which make solar thermally driven heating and cooling systems at the same time more efficient, reliable and cost competitive. Within the four subtasks, quality procedures on component levels, quality procedures on system levels, market support measures and dissemination and policy advices were elaborated.

This Subtask C6 report´s activity will emphasize contracting models for solar cooling systems. For that purpose, a narrow collaboration was established with ongoing IEA SHC Task 45 on large systems for district heating and cooling systems.

This analysis focuses on details, such as investment models, contracts and other relevant issues with regard to which information on ESCos is limited and dispersed in the EU and worldwide. The work will also deepen our understanding of hurdles which ESCos are faced with and will provide information on ways of overcoming such hurdles in practice.

Solar thermal technology is defined as a technology used to harness energy from the sun for use in a thermal process. There are a wide variety of applications for this technology, including, but not limited to, water/process heating, radiant heating and air conditioning. In each application, solar energy is obtained through a solar collector and transferred to a thermal process. Given the proper conditions and system design, solar thermal technology can provide a reliable and cost-effective energy source in residential, commercial, and industrial applications.

In the field of solar air conditioning, an exponential increase of activities occurred during the last years. Some solar cooling systems are available at small scale, starting at approx. 15 kW. Below this figure a lot of research was done to achieve satisfactory results in regard of the systems´ thermal efficiency. Most solar cooling installations were realized in the scale between 15 kW and 500 kW, being perfectly suitable for all buildings that have a continuous and regular load profile (e.g. public buildings, offices, hospitals…). Since 2011, there are also solar thermal cooling systems with cooling powers beyond 1 Megawatt in operation, like in Singapore and the USA. These systems were the first solar cooling systems based on ESCo financing models.

Solar collectors for air conditioning of buildings are generally also used for other applications, such as space heating and domestic hot water preparation. Latter usually contributes to a reduced payback time of the investment. The technologies of concentrating solar cooling applications as well as the technology of solar flat plate cooling applications have their specific advantages or disadvantages in each case, depending on location and application characteristics. Components have to be carefully selected and developed through an integrated design approach to become a functional system.

ESCos for solar thermal air conditioning are in many cases a competitive energy service concept to execute energy efficiency projects in buildings or production facilities. Further work will be done in the IEA SHC Task 48 and other projects to make this financial service more competitive and superior to other products
Final report on Contracting Models for Solar Thermally Driven Cooling and Heating Systems
Task 48 Highlights 2013
Quality Assurance and Support Measures for Solar Cooling
February 2014 - PDF 0.3MB
The demand for air-conditioning is rapidly increasing, especially in developing countries. And the potential for solar cooling to meet this demand is immense. The results of past IEA SHC work in this field (most recently, SHC Task 38: Solar Air- Conditioning and Refrigeration) have demonstrated the technology’s potential for building air-conditioning, particularly in sunny regions, and identified work needed to achieve economically competitive systems that provide solid long-term energy performance and reliability.
Task 48 Highlights 2013
Solar Cooling Handbook
A Guide to Solar Assisted Cooling and Dehumidification Processes
January 2014
By: Hans Martin Henning, Mario Motta, Daniel Mugnier
Editor: Hans Martin Henning, Mario Motta, Daniel Mugnier
Publisher: Ambra Verlag
This book in English is the absolute reference on the subject of solar thermal air conditioning. Very detailed, it is the result of the work of Task Group 48 of the IEA SHC program and has more than 350 pages in all aspects of technology: components, the system and its design approach, the economic analysis of technology and finally the feedback of field experience for both small and large systems. All sorption technologies are discussed and each time by scientists from twenty participating countries.
ISBN: 978-3-99043-438-3
Order - 82.00 EUR
Solar Cooling Handbook
Review of relevant international standards rating and incentive schemes
Task48 - Activity C1 Final Report
January 2013 - PDF 1.43MB
By: Daniel Rowe, Dr. Stephen White, Daniel Mugnier and Khalid Nagidi
Editor: Daniel Rowe
A large number of government incentive programmes and industry development programmes have
been instituted in different jurisdictions, to assist the renewable energy and building energy efficiency
industries. These programmes call up procedures for quantifying benefits, rating effectiveness
and achieving robust measurement and verification.
A database of relevant standards, processes and incentives has been created and links to the needs of the solar heating and cooling industry have been analysed.
Review of relevant international standards rating and incentive schemes
Final report Measurement and Verification Procedures
Task 48 C4 Final report
January 2013 - PDF 3.44MB
By: Francois Boudéhenn, Stuart Hands, Stephen White, Christian Zahler & Farah Gammoh
Editor: Francois Boudéhenn
While Measurement & Verification (M&V) procedures (e.g. IPMVP, ASHRAE and FEMP) exist for general energy conservation measures, it is desirable to have a more specific and targeted guide for solar cooling in order to simplify procedures, improve confidence in results and to assist M&V implementation with more detailed guidance. The resulting in-situ and ex-situ measurement procedures have been written up as a document suitable for submission as a draft standard.
The present final deliverable is a monitoring procedure and a draft standard integrating the following aspects:
- Presentation of a generic scheme for solar cooling installations;
- Definition of one (or two maximum) performance indicators, with associated calculation method applied to the generic scheme;
- Prescription of the sensors required (position, technologies, …) in order to obtain the needed information for calculating the performance indicator(s);
- Definition of the analysis method for reporting the performance and quality of the installation.
Final report Measurement and Verification Procedures
Task 48 Highlights 2012
January 2013 - PDF 0.17MB
The demand for air-conditioning is rapidly increasing, especially in developing countries. And the potential for solar cooling to meet this demand is immense. The results of past IEA SHC work in this field (most recently, SHC Task 38: Solar Air-Conditioning and Refrigeration) have demonstrated the technology’s potential for building air-conditioning, particularly in sunny regions, and identified work needed to achieve economically competitive systems that provide solid long-term energy performance and reliability.
Task 48 Highlights 2012
Europe Asia Solar Cooling Gains Traction
January 2012
By: Bärbel Epp
Editor: Solarthermalworld
Publisher: Solarthermalworld
Large Japanese and Chinese companies have recently taken a greater interest in solar cooling. The photo shows an installation by Chinese company Jiangsu Huineng New Energy Technology (Huin), which started supplying solar cooling systems this year. New system kits help drive down costs, although investments in sorption chillers are still higher than for compression chillers. After the Intersolar Europe conference in Munich, Germany, and its dedicated solar cooling session, Uli Jakob, Vice President of the German sorption chiller association Green Chiller, noted: “Solar cooling was one of the highlights of the conference.”

  • PDF 0.03MB
Europe Asia Solar Cooling Gains Traction
Keeping Cool with the Sun
Latest Developments on Solar Cooling and Task 48 Short Presentation
January 2012 - PDF 1.36MB
By: Daniel Mugnier (TECSOL) & Uli Jakob (SOLEM Consulting)
Publisher: International Sustainable Energy Review
Worldwide, the energy consumption required for cold and air conditioning is rising rapidly. Usual electrically driven compressor chillers (split units) have maximum energy consumption in peak-load periods during the summer. In the last few years in Southern Europe this has regularly led to grids working to maximum capacity and blackouts. In recent years, the sales figures of split units with a cooling capacity range of up to 5KW have risen rapidly.

www.internationalsustainableenergy.com
Keeping Cool with the Sun
Task 48 Highlights 2011
January 2012 - PDF 0.48MB
The demand for air-conditioning is rapidly increasing, especially in developing countries. And the potential for solar cooling to meet this demand is immense. The results of past IEA SHC work in this field (most recently, SHC Task 38: Solar Air- Conditioning and Refrigeration) have demonstrated the technology’s potential for building air-conditioning, particularly in sunny regions, and identified work needed to achieve economically competitive systems that provide solid long-term energy performance and reliability.
Task 48 Highlights 2011
IEA SHC Task 48 Flyer
Quality Assurance and Support Measures for Solar Cooling
October 2011 - PDF 1.09MB
By: Task 48
A tremendous increase in the market for air-conditioning can be observed worldwide especially in developing countries. The results of the past IEA SHC Tasks and works on solar cooling (ex : Task 38 Solar Air-Conditioning and Refrigeration) on the one hand showed the great potential of this technology for building air-conditioning, particularly in sunny regions. On the other hand, it has been shown that further work is necessary in order to achieve economically competitive systems and which presents solid long term energy performance and reliability.
IEA SHC Task 48 Flyer