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An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System

Author

Listed:
  • Junichiro Matsunaga

    (Matsunaga Co., Ltd., Tokyo 178-0064, Japan)

  • Koki Kikuta

    (Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan)

  • Hideki Hirakawa

    (Faculty of Engineering, Hokkaido University of Science, Sapporo 006-8585, Japan)

  • Keita Mizuno

    (Misawa Homes Institute of Research and Development Co., Ltd., Tokyo 168-0072, Japan)

  • Masaki Tajima

    (School of Systems Engineering, Kochi University of Technology, Kami 782-8502, Japan)

  • Motoya Hayashi

    (Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan)

  • Akira Fukushima

    (Faculty of Engineering, Hokkaido University of Science, Sapporo 006-8585, Japan)

Abstract

In this paper, the authors examined the technology to maximize the use of renewable energy. Passive ventilation systems are expected to reduce the energy consumption of the fan and the maintenance burden. In addition, the wall-mounted solar air heater can supply thermal energy without using any energy at all. Therefore, this paper presents a “passive ventilation system with a solar air heater” that combines a passive ventilation system with the solar air heater to preheat the air. This system can reduce the ventilation load. To evaluate the solar air heater performance in a real environment, we developed a simulation for calculating the heat collection capacity of the solar air heater, and then the system was implemented in a real building for verification. The simulation performs hourly unsteady calculations, allowing for accurate evaluation of the annual simulation. Based on the measurement results, the effects of heating load reduction and prediction methods are presented. The solar air heater reduced the monthly ventilation load by up to 50% or more, and by at least 15%. It was also confirmed that there was a high correlation between the actual measurements and the simulation results.

Suggested Citation

  • Junichiro Matsunaga & Koki Kikuta & Hideki Hirakawa & Keita Mizuno & Masaki Tajima & Motoya Hayashi & Akira Fukushima, 2021. "An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System," Energies, MDPI, vol. 14(22), pages 1-12, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7651-:d:680144
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    References listed on IDEAS

    as
    1. Yu Wang & Mikael Boulic & Robyn Phipps & Manfred Plagmann & Chris Cunningham, 2020. "Experimental Performance of a Solar Air Collector with a Perforated Back Plate in New Zealand," Energies, MDPI, vol. 13(6), pages 1-16, March.
    2. Sanda Budea, 2014. "Solar Air Collectors for Space Heating and Ventilation Applications—Performance and Case Studies under Romanian Climatic Conditions," Energies, MDPI, vol. 7(6), pages 1-12, June.
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    Cited by:

    1. Junichiro Matsunaga & Koki Kikuta & Hideki Hirakawa & Motoya Hayashi & Akira Fukushima, 2023. "Evaluation of the Primary Energy and Carbon Dioxide Emissions of a Passive Ventilation System with a Solar Air Heater," Energies, MDPI, vol. 16(14), pages 1-17, July.

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