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INTEGRATED SYSTEM FOR DAYLIGHTING, NATURAL VENTILATION AND SOLAR HEATING Kai Sirén

INTEGRATED SYSTEM FOR DAYLIGHTING, NATURAL VENTILATION AND SOLAR HEATING Kai Sirén Helsinki University of Technology October 2000. PARTNERS Helsinki University of Technology FIN Nottingham University UK University of Porto PT Sulzer Infra Lab. CH Brian Ford & Ass UK

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INTEGRATED SYSTEM FOR DAYLIGHTING, NATURAL VENTILATION AND SOLAR HEATING Kai Sirén

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  1. INTEGRATED SYSTEM FOR DAYLIGHTING, NATURAL VENTILATION AND SOLAR HEATING Kai Sirén Helsinki University of Technology October 2000

  2. PARTNERS Helsinki University of Technology FIN Nottingham University UK University of Porto PT Sulzer Infra Lab. CH Brian Ford & Ass UK Thermacore Ltd UK TIMESCALE 1. Feb.1998 - 31. July 2000

  3. PROJECT OBJECTIVES The project aims to develop a unit combining light pipe technology and passive stack ventilation by utilising the light pipe as an exhaust stack. This system is further integrated with two different energy options, either for heating or for cooling.

  4. ACHIEVEMENTS • An installed and tested prototype based on research and development of • collection of light • integrated controls of lighting • controlled stack ventilation • air flow enhancement • thermosyphon cooling • An installed and tested prototype based on research and development of • collection of light • integrated controls of lighting • controlled stack ventilation • air flow enhancement • thermosyphon cooling

  5. EXPECTED BENEFITS Energy related Location Weather SPP [yr] EPP [yr] PSE [euro/kWh] computed computed computed target target target Helsinki Cold 16 8.7 0.119 <10 <6 <0.17 Zürich Moderate 6.4 6.7 0.080 <8 <5 <0.15 Lisbon Southern 6.2 4.5 0.054 <6 <4 <0.13

  6. EXPECTED BENEFITS User related Ergonomic Institute, Berlin

  7. CONCLUSIONS • the developed LVP concept seems to function satisfactorily • a static collector seems not to be the right concept for the LVP • the profitability of the LVP varies from country to country • a major potential for applying the light-vent pipe seems to be in schools and offices • the LVP concept as a whole is not finalised yet and needs some additional development

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