Sustainable wooden envelope for subtropical regions - The realization and validation in Japan
Paper i proceeding, 2014

A vapor-open wooden building envelope for subtropical regions and its design optimization method, which considers environmental, economic and thermo-hygric aspects, were developed by the authors. As a case study, a test house (a detached residential building) has been constructed in Ohmihachiman (central Japan) and a number of temperature/humidity sensors were installed inside the walls as well as in the rooms. It was found that close communications among the designers, the constructors and the client is essential in order to realize a building with new features as it is designed. The hygrothermal model of the building envelope was successfully validated.


whole building hygrothermal model

Vapor-open envelope

test house



Yutaka Goto

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

York Ostermeyer

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Karim Ghazi Wakili

Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa)

Andrea Frangi

Eidgenössische Technische Hochschule Zürich (ETH)

Naoto Ando

University of Tokyo

Holger Wallbaum

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

World Conference on Timber Engineering 2014, 10-14 August 2014, Quebec City


Building Futures (2010-2018)



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