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Building Environment Control

This laboratory is aimed at developing methodologies to achieve healthy, comfortable, and safe indoor environment with considering global environmental impacts. Our research is based on the fundamental principles and applied technologies concerning heat, moisture, and air transfer. Furthermore, we study methods to preserve and exhibit cultural properties by properly controlling their surrounding environments. We also research theories and planning methods pertaining to building equipments in order to achieve required environmental conditions.

Academic Staff

Daisuke OGURA

Daisuke OGURAProfessor (Graduate School of Engineering)

Research Topics

To promote comfortable and healthy dwelling spaces and to preserve cultural heritage, I focus on heat and moisture problems in relation to architecture and cultural heritages.

In recent years, I have been studying the following topics:

  • Evaluation and improvement of thermal environment with considering health and comfort in dwellings and vernacular architecture in Asian hot and humid regions
  • Use of hygroscopic materials to provide moisture buffering in indoor climates
  • Durability prediction and effective use of super insulation materials
  • Preservation of mural paintings in various world cultural heritages
  • Preservation of stone cultural properties such as tumulus and stone Buddha

Contacts

Room 405, Bldg. C2, Katsura Campus
TEL: +81-75-383-2918
FAX: +81-75-383-2966
E-mail: ogurad@archi.kyoto-u.ac.jp

Chiemi IBA

Chiemi IBAAssociate Professor (Graduate School of Engineering)

Research Topics

My main research topics include residential thermal environments and the durability of building materials.

Current research themes are as follows:

  • Field survey of frost damage and analysis of freezing-thawing processes in building materials
  • Thermal environment control and energy savings in Kyo-machiya with considering residential health and comfort
  • Investigation of moisture buffering effect of interior materials
  • Energy conservation of hot water supply systems

Contacts

E-mail: iba@archi.kyoto-u.ac.jp

Research Topics

1. Thermal environment and energy consumption in dwellings and buildings

We survey the energy consumption and environmental conditions in dwellings and buildings. Based on the survey results, we propose methods to use renewable energy and control indoor environment, considering factors such as climate and lifestyle.

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CFD analysis on effective operation of openings to promote natural ventilation

2. Evaluation and improvement of thermal environment in vernacular architecture

We survey thermal environmental conditions in vernacular architecture in the world, including Japan. The purpose of our research is the succession of an architecture which makes use of the climate, material, and traditional craftsmanship in the region; therefore we investigate, evaluate and propose an improving plan from a viewpoint of indoor environmental control.

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Traditional community house in Vietnam

3. Comfort and health in sleeping and bathing environments

It is important to maintain the proper thermal environment in both the bedroom and bathroom to promote healthy and comfortable sleeping and safe bathing.

For this purpose, we make efforts to understand the characteristics of human physiology such as body temperature, perspiration rates, and blood pressure. Using this information, we developed a numerical model to estimate the human physiological values.

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Measured and predicted blood pressure fluctuation during bathing

4. Environmental control for preservation and exhibition of cultural properties

Cultural properties, such as a mural painting, need control of its environment to suppress as much as possible degradation by the temperature, relative humidity, air quality and so on during collection, exhibition, and transportation of those. We are investigating the environmental control technique for preservation and exhibition of cultural properties.

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Calculation results of saturation degree distribution in the wall of Hagia Sophia

5. Preservation of historical buildings and monuments

Heritages such as historical buildings and monuments are affected by the outdoor temperature and humidity, solar radiation, rainfall and ground water. There is a risk of progression of the deterioration by the environment. We are clarifying the mechanism of the degradation and are proposing the preventive measures for suppressing degradation as much as possible.

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Simulated tumulus in Katsura campus (Left: Exterior, Right:In the stone chamber)

6. Durability of building materials and long-life buildings

We investigate the causes and characteristics of building material deterioration, particularly related to heat and moisture (such as frost damage in roof tiles or exterior claddings).

Field surveys, deterioration experiments, measurements of material properties, and numerical analyses are conducted to clarify causes of deterioration and to propose counter measures.

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Field survey on roof tile deterioration