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Design for a new type of environmentally friendly house in hot, humid and densely populated urban areas in Japan.

Number: pap. 406

Author(s) : UNNO K., ENDO E., KOBAYASHI Y., et al.

Summary

In high densely urban areas in Japan, solar radiation and wind is prevented from reaching inside houses owing to the presence of closely adjacent buildings. Furthermore, residents in such areas tend not to open windows for reasons of privacy and security. The purpose of this study is to propose a prototype design for an urban detached house. Passive design strategies were evaluated through numerical simulation. The house was designed to enable ventilation through stairwells, and new types of windows were designed to be secure. The result of the simulation showed that the ventilation tower, stairwells, and windows were effective for natural ventilation. When the outside temperature was neither too hot nor too cold, combination of air-conditioning and ventilating the house by opening the windows decreased the indoor temperature. Natural ventilation reduced the air-conditioning load. In summer, opening the stairwells and windows promoted natural ventilation, consequently reducing the air-conditioning load. In winter, closing the stairwells and windows brought about higher temperature in the halls and reduced the air-conditioning load. The effective operation methods were found to be different for every season. It is imperative that the dwellers understand the contribution of each window and stairwell to the overall indoor conditions and adopt the suitable approaches accordingly for each dweller. This study explored the methods of effectively combining natural ventilation with air-conditioning in the house.

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Pages: 9 p.

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Details

  • Original title: Design for a new type of environmentally friendly house in hot, humid and densely populated urban areas in Japan.
  • Record ID : 30009005
  • Languages: English
  • Subject: Environment
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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