Personlig presentation av Chris Bales
Professor energiteknik, Energiteknik
Jag är kursansvarig på tre kurser på masterprogrammet inom solenergi. Mitt forskningsområde är energieffektivisering med fokus på solenergi. De flesta projekt är internationella projekt.
Jag har jobbat länge på högskolan och började 1992 som tekniker. Nuförtiden jobbar jag främst med forskning men även med undersvisning och samverkan med företag. Jag handleder flera doktorander och är ansvarig för flera kurser i vårt masterprogram inom solenergi.
Kärnan i forskningen och undervisningen är solenergi men jag har även jobbat med energieffektivisering i stort. Min roll i ämnet och i forskargruppen handlar mycket om internationell samverkan i olika projekt och jag har arbetat i många EU projekt i olika ramprogram. Jag har också jobbat i flera Nordiska projekt med undervisning och forskning.
Forskningsprojekt
Publikationer
- . A coordinated control to improve performance for a building cluster withenergy storage, electric vehicles, and energy sharing considered, Applied Energy, 2020, Vol. 268. Artikel : refereegranskat.
- . A coordinated control to improve energy performance for a building cluster with energy storage, EVs, and energy sharing, SINTEF Proceedings : 2020. Konferensbidrag : refereegranskat.
- . Direct characterisation of the annual performance of solar thermal and heat pump systems using a six-day whole system test, Renewable energy, 2020, Vol. 146, 1337-1353. Artikel : refereegranskat.
- . Impact of Boundary Conditions on the Performance Enhancement of Advanced Control Strategies for a Residential Building with a Heat Pump and PV System with Energy Storage, Energies, 2020, Vol. 13, No. 6. Artikel : refereegranskat.
- . A systematic review of recent air source heat pump (ASHP) systems assisted by solar thermal, photovoltaic and photovoltaic/thermal sources, Renewable energy, 2020, Vol. 146, 2472-2487. Artikel : refereegranskat.
- . A comprehensive evaluation of a monthly-based energy auditing tool through dynamic simulations, and monitoring in a renovation case study, Energy and Buildings, 2019, Vol. 183, 713-726. Artikel : refereegranskat.
- . Database of energy, environmental and economic indicators of renovation packages for European residential buildings, Energy and Buildings, 2019, Vol. 203. Artikel : refereegranskat.
- . Transforming a residential building cluster into electricity prosumers in Sweden : Optimal design of a coupled PV-heat pump-thermal storage-electric vehicle system, Applied Energy, 2019, Vol. 255. Artikel : refereegranskat.
- . Modelling of dynamics and stratification effects in pellet boilers, Renewable energy, 2019, Vol. 134, 769-782. Artikel : refereegranskat.
- . Techno-economic analysis of control algorithms for an exhaust air heat pump system for detached houses coupled to a photovoltaic system, Applied Energy, 2019, Vol. 249, 355-367. Artikel : refereegranskat.
- . Miljontak Delprojekt 2 : Sammanfattning av litteratursammanställning, 2018. Rapport.
- . Techno-economic review of solar heat pump systems for residential heating applications, Renewable & sustainable energy reviews, 2018, Vol. 81, 22-32. Artikel : refereegranskat.
- . Economic and environmental analysis of energy renovation packages for European office buildings, Energy and Buildings, 2017, Vol. 148, 155-165. Artikel : refereegranskat.
- . Solar district heating and cooling: A review, International journal of energy research (Print), 2017, 1-23. Artikel : refereegranskat.
- . Smart control strategy for PV and heat pump system utilizing thermal and electrical storage and forecast services, 2017. Konferensbidrag : refereegranskat.
- . Simulations of a Solar-Assisted Block Heating System, 2017. Konferensbidrag : refereegranskat.
- . Techno-Economic Analysis of Solar Options for a Block Heating System, Conference Proceedings: Eurosun 2016 : 2016. Konferensbidrag : refereegranskat.
- . SHINE Doctoral School : Results from six PhD studies on large scale solar thermal, 4th International Solar District Heating Conference : 2016. Konferensbidrag.
- . Application of Polysun in Teaching Courses in Sweden and in the PhD Program SHINE, SIGES Internationale Konferenz zur Simulation gebäudetechnischer Energiesysteme : 2016. Konferensbidrag.
- . Report on prototype system’s energetic performance and financial competitiveness - Deliverable 8.3 : MacSheep - New Materials and Control for a next generation of compact combined Solar and heat pump systems with boosted energetic and exergetic performance, 2016. Rapport.
- . Performance of Studied Systemic Renovation Packages – Office Buildings, iNSPiRe, 2016. Rapport.
- . Techno-economic analysis of energy renovation measures for a district heated multi-family house, Applied Energy, 2016, Vol. 177, 108-116. Artikel : refereegranskat.
- . D4.2 Assessed Standardised Energy Generation and Energy Distribution Packages, 2016. Rapport.
- . D6.7 Guidelines on Systemic Approach and Checklist, 2016. Rapport.
- . Influence of boundary conditions and component size on electricity demand in solar thermal and heat pump combisystems, Applied Energy, 2016, Vol. 162, 1062-1073. Artikel : refereegranskat.
- . Analysis of system improvements in solar thermal and air source heat pump combisystems, Applied Energy, 2016, Vol. 173, 606-623. Artikel : refereegranskat.
- . Techno-economic analysis of a novel solar thermal and air-source heat pump system, 2016. Konferensbidrag : populärvetenskaplig.
- . Control algorithms for PV and Heat Pump system using thermal and electrical storage, Proceedings of the 11th ISES EuroSun 2016 International Conference on Solar Energy for Buildings and Industry, Palma de Mallorca, Spain, 11-14 October 2016 : 2016. Konferensbidrag.
- . Report on Non-Technical Barriers to the market placement, 2016. Rapport.
- . Optimized solar and heat pump systems, components and dimensioning : Deliverable 7.3 - MacSheep - New Materials and Control for a next generation of compact combined Solar and heat pump systems with boosted energetic and exergetic performance, 2015. Rapport.
- . Final report on storage developments in WP - Deliverable 5.4 : MacSheep - New Materials and Control for a next generation of compact combined Solar and heat pump systems with boosted energetic and exergetic performance, 2015. Rapport.
- . Techno-economic evaluation of solar-assisted heating and cooling systems with sorption module integrated solar collectors, Energy Procedia, 2015, Vol. 70, 409-417. Artikel : refereegranskat.
- . Experimental evaluation of a novel absorption heat pump module for solar cooling applications, Science and Technology for the Built Environment, 2015, Vol. 21, No. 3, 323-331. Artikel : refereegranskat.
- . Final report on Control strategies, fault detection and on-line diagnosis in WP6 - Deliverable 6.4 : MacSheep -New Materials and Control for a next generation of compact combined Solar and heat pump systems with boosted energetic and exergetic performance, 2015. Rapport.
- . D6.3c Performance of the Studied Systemic Renovation Packages - Multi-Family Houses, 2015. Rapport.
- . D6.3b Performance of the Studied Systemic Renovation Packages - Single Family Houses, 2015. Rapport.
- . D6.3a Performance of the Studied Systemic Renovation Packages - Method, 2015. Rapport.
- . Report on auditing tool for assessment of building needs, iNSPiRe, 2015. Rapport.
- . Economic and environmental analysis of energy renovation measures for a district heated multi-family house, 2015. Manuskript.
- . Testing of combined heating systems for small houses: Improved procedures for whole system test methods : Deliverable 2.3, 2015. Rapport.
- . System simulations, Ingår i: Solar and Heat Pump Systems for Residential Buildings, John Wiley & Sons, 2015. Kapitel av bok.
- . Combining Thermal Energy Storage with Buildings : A Review, Renewable & sustainable energy reviews, 2015, Vol. 42, 1305-1325. Artikel : refereegranskat.
- . Final report on heat pump developments in WP 4 - MacSheep Deliverable 4.4 : MacSheep -New Materials and Control for a next generation of compact combined Solar and heat pump systems with boosted energetic and exergetic performance, 2015. Rapport.
- . D2.1c Simulation Results of Reference Buildings, 2014. Rapport.
- . Seven Phd Studies on Solar District Heat, EuroSun 2014 / ISES Conference Proceedings (2014) : 2014. Konferensbidrag.
- . European resarch school on large scale solar thermal - SHINE, Solar District Heating 2014 : 2014. Konferensbidrag.
- . Demonstration of Solar Heating and Cooling System using Sorption Integrated Solar Thermal Collectors, EuroSun 2014 / ISES Conference Proceedings (2014) : 2014. Konferensbidrag : refereegranskat.
- . Towards an harmonized whole system test method for combined renewable heating systems for houses, 2014. Konferensbidrag.
- . Techno-economic analysis of three HVAC retrofitting options, 2014. Konferensbidrag : refereegranskat.
- . Energy performance comparison of three innovative HVAC systems for renovation through dynamic simulation, Energy and Buildings, 2014, Vol. 82, 512-519. Artikel : refereegranskat.
- . SOLNET - PhD-Scholarships and courses on solar heating, 2014. Konferensbidrag.
- . D2.3 RES availability survey and boundary conditions for simulations, 2014. Rapport.
- . Testing and evaluation of heat storage tanks according to Eco Design and transitional methods, 2014. Konferensbidrag.
- . Influence of hydraulics and control of thermal storage in solar assisted heat pump combisystems, Energy Procedia, 2014, Vol. 48, 946-955. Artikel : refereegranskat.
- . Simulation study of cascade heat pump for solar combisystems, ISES Conference Proceedings EuroSun 2014 : 2014. Konferensbidrag.
- . Comparison of two HVAC renovation solutions : A case study, 2013. Konferensbidrag : refereegranskat.
- . Dynamic whole system testing of combined renewable heating systems : the current state of the art, Energy and Buildings, 2013, Vol. 66, 667-677. Artikel : refereegranskat.
- . SolNet - PhD-scholarships and courses on Solar Heating, ISES SWC2013 : 2013. Konferensbidrag.
- . Thermal energy storage in Swedish single family houses : a case study, InnoStock The 12th International Conference on Energy Storage : 2012. Konferensbidrag.
- . Decentralized cooling in district heating network : system simulation and parametric study, Applied Energy, 2012, Vol. 92, 175-184. Artikel : refereegranskat.
- . Particles and gaseous emissions from realistic operation of residential wood pellet heating systems, Atmospheric Environment, 2012, Vol. 59, 320-327. Artikel : refereegranskat.
- . Comparison of Expansion Vessel Calculation Tools for “Boil-Back” Stagnation Protection, 2011. Rapport.
- . Suggested Contents for Training on Solar Combisystems for Installers, 2011. Rapport.
- . Slutrapport för EU-projekt Combisol P30784-1, 2011. Rapport.
- . Viktigt med helhetstänk i solvärmesystem, VVS-Forum, 2011, Vol. 3, 107-109. Artikel.
- . ”Röriga” förluster i solvärmesystem, Energimagasinet, 2011, Vol. 2011, No. 1, 42-43. Artikel.
- . A Unified Model for the Simulation of Oil, Gas, and Biomass Space Heating Boilers for Energy Estimating Purposes : Part I: Model Development, Journal of Building Performance Simulation, Taylor & Francis, 2011, Vol. 4, No. 1, 1-18. Artikel : refereegranskat.
- . A Unified Model for the Simulation of Oil, Gas, and Biomass Space Heating Boilers for Energy Estimating Purposes : Part II: Parameterization and Comparison with Measurements, Journal of Building Performance Simulation, Taylor & Francis, 2011, Vol. 4, No. 1, 19-36. Artikel : refereegranskat.
- . Evaluation of a high temperature solar thermal seasonal borehole storage, ISES Solar World Congress : 2011. Konferensbidrag.
- . Highly reflective coatings for interior and exterior steel cladding and the energy efficiency of buildings, Applied Energy, 2011, Vol. 88, No. 12, 4655-4666. Artikel : refereegranskat.
- . D6.3 : Riktlinjer för tillverkare, 2011. Rapport.
- . Whole system testing : the efficient way to test and improve solar combisystems performance and quality, ESTEC 2011 Conference Proceedings : 2011. Konferensbidrag.
- . D5.4 : Summary of the Qualitative Evaluation of Solar Combisystems, 2011. Rapport.
- . D2.4: Updated State of the Art Report Of Solar Combisystems Analysed within CombiSol, 2011. Rapport.
- . D5.2 : Uniform Documentation of the Evaluated Solar Combisystems, 2011. Rapport.
- . D2.1 : Criteria for Best Practice, 2011. Rapport.
- . D2.3 : Guidelines for Design and Dimensioning, 2011. Rapport.
- . Decentralised cooling in district heating network : Monitoring results and calibration of simulation model, Energy and Buildings, 2011, Vol. 43, No. 12, 3311-3321. Artikel : refereegranskat.
- . Engineering tools, 2010. Rapport.
- . Comparison of Simple EPBD Calculation Tool for Solar Combisystems with TRNSYS, Eurosun 2010 : 2010. Konferensbidrag.
- . Slutrapport för EU-projekt Polysmart P22374-1, 2010. Rapport.
- . ClimateWell TDC with District Heat, 2010. Rapport.
- . Slutrapport för EU-projekt SolNET P22416-1, 2010. Rapport.
- . A method to determine stratification efficiency of thermal energy storage processes independently from storage heat losses, Solar Energy, 2010, Vol. 84, No. 6, 997-1007. Artikel : refereegranskat.
- . Combined Solar and Pellet Heating Systems for Houses:Improvement of Energy Efficiency and Reduction of Boiler ON/OFFcycling, Eurosun 2010 : 2010. Konferensbidrag.
- . Energy Efficiency through Thermal Energy Storage - Evaluation of the Possibilities for the Swedish Building Stock, Phase 1, Clima2010 : 2010. Konferensbidrag.
- . D4.4 : Jämförelse av resultat från alla uppmätta anläggningar, 2010. Rapport.
- . Modelling of a Commercial Absorption Heat Pump with Integral Storage, Effstock 2009 - The 11th International Conference on Energy Storage : 2009. Konferensbidrag : refereegranskat.
- . D5.1b : Standard Procedure describing how to evaluate solar combisystems, 2009. Rapport.
- . D4.2 : Guidelines for calculation of savings indicators, 2009. Rapport.
- . D4.1 : Specifications for the monitoring, collection and evaluation of results, 2009. Rapport.
- . A new concept for combisystems characterization : the FSC method, Solar Energy, 2009, Vol. 83, No. 9, 1540-1549. Artikel : refereegranskat.
- . Validation of a dynamic model for wood pellet boilers and stoves, Applied Energy, 2009, No. 86. Artikel : refereegranskat.
- . Solar CombiSystems Promotion and Standardisation (COMBISOL project), Eurosun 2008 : 2008. Konferensbidrag.
- . Chemical and Sorption Storage – Results from IEA-SHC Task 32, Eurosun 2008 : 2008. Konferensbidrag.
- . Laboratory Tests of Chemical Reactions and Prototype Sorption Storage Units : Report B4 of Subtask B, IEA-SHC Task 32 report, 2008. Rapport.
- . Final Report of Subtask B “Chemical and Sorption Storage” : Report B7 of Subtask B, IEA-SHC Task 32 report, 2008. Rapport.
- . Store Models for Chemical and Sorption Storage Units : Report B5 of Subtask B, IEA-SHC Task 32 report, 2008. Rapport.
- . Erfahrungen mit einem neu entwickelten kombinierten Pellet- und Solarheizungssystems, 18. Symposium Thermische Solarenergi : 2008. Konferensbidrag.
- . Reduction of co-emissions by combining pellet and solar heating systems, Eurosun 2008 : 2008. Konferensbidrag.
- . Review of an International Master Programme in Solar Energy Engineering, Eurosun 2008 : 2008. Konferensbidrag.
- . Feasibility of Solar Thermal Assisted Small Scale District Heating in Nordic Countries, Eurosun 2008 : 2008. Konferensbidrag.
- . Theoretical comparison between solar combisystems based on bikinitanks and tank-in-tank solar combisystems, Eurosun 2008 : 2008. Konferensbidrag.
- . Laboratory Prototypes of Thermo-Chemical and Sorption Storage Units : Report B3 of Subtask B, IEA-SHC Task 32 report, 2007. Rapport.
- . Comparison of carbon monoxide emissions and electricity consumption of modulating and non-modulating pellet and solar heating systems, International journal of energy research (Print), 2007, Vol. 31, No. 10, 915-930. Artikel : refereegranskat.
- . Optimisation method for solar heating systems in combination with pellet boilers/stoves, International Journal of Green Energy, 2007, Vol. 4, No. 3, 325-337. Artikel : refereegranskat.
- . Monitoring results of combined pellet and solar heating system, ISES Solar World Congress 2007, ISES 2007 : 2007. Konferensbidrag.
- . Past and future of European Solar Energy School, Proceedings of ISES Solar World Congress 2007 : 2007. Konferensbidrag : refereegranskat.
- . Analysis of System Reports of Task 26 for Sensitivity of Parameters, Task 26 - SOLAR COMBISYSTEMS, 2007. Rapport.
- . European Solar Engineering School ESES : Past and Future, Eurosun 2006 : 2006. Konferensbidrag.
- . Thermal Storage With The Thermo-Checmical Accumulator (TCA), Ecostock 2006 : 2006. Konferensbidrag : refereegranskat.
- . Solar Cooling and Storage with the Thermo-Chemical Accumulator, Eurosun 2006 : 2006. Konferensbidrag.
- . Design method for solar heating systems in combination with pellet boilers/stoves, EuroSun 2006 : 2006. Konferensbidrag.
- . Thermal performance of combined solar and pellet heating systems, Renewable energy, 2006, Vol. 31, No. 1, 73-88. Artikel : refereegranskat.
- . Competitive Solar Heating Systems for Residential Buildings (REBUS), Nordic Energy Research project report, 2006. Rapport.
- . Solar thermal components adapted to common building standards (SCAS), Nordic Innovation Centre project report, 2006. Rapport.
- . Nordic Energy Research Cooperation on Solar Combisystems, Eurosun 2006 : 2006. Konferensbidrag.
- . Computer modelling of wood pellet stoves and boilers connected to solar heating systems, Proc on USB of Pellets 2006, 30 May - 1 June, Jönköping, Sweden : 2006. Konferensbidrag.
- . Increasing efficiency and decreasing CO-emissions for a combined solar and wood pellet heating system for single-family houses, Proc. on USB of Pellets 2006, 30 May - 1 June, Jönköping, Sweden : 2006. Konferensbidrag.
- . Development of a Compact Solar Combisystem, Eurosun 2006 : 2006. Konferensbidrag.
- . Design and fabrication of a portable Fresnel reflector, Eurosun 2006 : 2006. Konferensbidrag.
- . Chapter 12: Sorption and Themo-Chemical Storage, Ingår i: Thermal energy storage for solar and low energy buildings - State of the art, Lleida University, 2005. Kapitel av bok.
- . Thermal Properties of Materials for Thermo-chemical Storage of Solar Heat : Report B2 of Subtask B, IEA-SHC Task 32 report, 2005. Rapport.
- . Chemical and Sorption Storage - Selection of Concepts : Report B1 of Subtask B, IEA-SHC Task 32 report, 2005. Rapport.
- . Advanced Storage Concepts For Solar Houses And Low Energy Buildings - IEA-SHC Task 32, ISES Solar World Congress 2005 : 2005. Konferensbidrag.
- . TCA Evaluation : Lab Measurements, Modelling and System Simulations, Centrum för solenergiforskning, Högskolan Dalarna, 2005. Rapport.
- . Solar Driven Chemical Heat Pump With Integral Storage - The Thermo-Chemical Accumulator (´TCA), First International Conference of Solar Air Conditioning : 2005. Konferensbidrag.
- . The actual status of the development of a Danish/Swedish system concept of a solar combisystem, Northsun : 2005. Konferensbidrag.
- . Competitive solar heating systems for residential buildings, Northsun : 2005. Konferensbidrag.
- . Chapter 5: Combistores, Ingår i: Thermal energy storage for solar and low energy buildings - State of the art, Lleida University, 2005. Kapitel av bok.
- . Development of the Thermo Chemical Accumulator (TCA), Proc. Eurosun 2004 : 2004. Konferensbidrag.
- . COMBITEST : a new test method for thermal stores used in solar combisystems, Chalmers tekniska högskola, 2004. Doktorsavhandling.
- . Heat losses and thermal performance of commercial combined solar and pellet heating systems, Eurosun 2004 : 2004. Konferensbidrag.
- . ESES, A European Master's Program In Solar Energy Engineering, Eurosun 2004 : 2004. Konferensbidrag.
- . Sol till både vatten och värme, Enkla åtgärder kan öka solvärmeutbytet, Formas, Forskningsrådet för miljö, areella näringar och samhällsbyggande, 2004. Bok.
- . External DHW Units for Solar Combisystems, Solar Energy, 2003, Vol. 74, 193-204. Artikel : refereegranskat.
- . Dimensioning of Solar Combisystems, Ingår i: Solar heating systems for houses, James & James, 2003. Kapitel av bok.
- . Internationell utveckling av solvärmekombisystem - Slutrapport för projekt Formas 2001-0227 & 2001-1964. Deltagande i IEA-SHC Annex 26 Solar Combisystems, Centrum för solenergiforskning, Högskolan Dalarna, 2003. Rapport.
- . A New Concept for Characterisation of Solar Combisystems : The Fsc Method, Proceedings ISES 2003 : 2003. Konferensbidrag.
- . Pellet Integral - Auxiliary Pellet Burner Integrated into Solar Stores, Proceedings ISES 2003 : 2003. Konferensbidrag.
- . Thermo Chemical Accumulator - TCA, Proceedings ISES 2003 : 2003. Konferensbidrag.
- . Material Demand and Energy Payback Time of Solar Combisystems, Proceedings ISES 2003 : 2003. Konferensbidrag.
- . Thermal store testing : evaluation of test methods, Chalmers tekniska högskola, 2002. Licentiatavhandling.
- . Combitest - Initial Development of the AC/DC Test Method, Technical Report of IEA-SHC Task 26 Solar Combisystems, 2002. Rapport.
- . Generic System #11: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advanced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems, Reports on Solar Combisystems modelled in Task 26 (system description, modelling, sensitivity, optimisation) : Appendix 6, 2002. Rapport.
- . Generic System #12: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advenced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems(system description, modelling, sensitivity, optimisation, Reports on Solar Combisystems modelled in Task 26 (system description, modelling, sensitivity, optimisation : Appendix 7, 2002. Rapport.
- . A Solar Collector Model for TRNSYS Simulation and System Testing, Technical Report of IEA-SHC Task 26 Solar Combisystems, 2002. Rapport.
- . Elements and Examples of "Dream Systems" of Solar Combisystems, Technical Report of IEA-SHC Task 26 Solar Combisystems, 2002. Rapport.
- . Parameter identification manual for TRNSYS models at SERC, Centrum för solenergiforskning, Högskolan Dalarna, 2001. Rapport.
- . PARAMETER IDENTIFICATION MANUAL FOR TRNSYS MODELS AT SERC, EKOS publikation, 2001. Rapport.
- . Combitst-program manual, Centrum för solenergiforskning, Högskolan Dalarna, 2000. Rapport.
- . Combitst-program manual, EKOS publikation, 2000. Rapport.
- . Evaluation of Solar Thermal Combisystems for the Swedish Climate, Eurosun 2000 : 2000. Konferensbidrag.
- . Evaluation of storage configurations with internal heat exchangers, Solar Energy, 1998, Vol. 62, No. 6, 407-417. Artikel : refereegranskat.
- . Variation of System Performance with Design and Climate for Combisystems in Sweden, Eurosun -98 : 1998. Konferensbidrag.
- . Rapport ramprogram FOU 1993-96, Projektnr 930391-05 samt förslag till ramprogram solfångarutveckling och systemteknik FOU 1997-99 solfångarutveckling och systemteknik, SERC, 1997. Rapport.
- . Six-Day System Test and Component test and System Simulation for Combitanks with Internal heat Exchangers, SERC, 1997. Rapport.
- . Performance comparison of combitanks using six-day test, North Sun'97 : 1997. Konferensbidrag.
- . Comparison of External DHW Load Side Heat Exchange Units for Small Solar Storage Systems, North Sun ´97 : 1997. Konferensbidrag.
- . Provning av tappvattenautomater kopplade till ackumulatortank, SERC, 1996. Rapport.
- . Provning av ackumulatorsystem för solvärmeanläggningar, SERC, 1995. Rapport.
- . Renewable energy education : Report from a field trip to Melbourne, Australia, and short visits to India and New Zealand During Nov/Dec 1992, SERC, 1993. Rapport.
- . Villasystem för solvärme, SERC, 1993. Rapport.