For determining VOCs emitted from bioeffluents, subjective experiments were conducted in a room-size chamber with human occupants and panel. The ventilation rates were changed for setting different experimental conditions of air pollution. The number of occupants was changed also for setting experimental conditions. The sensory panel sniffed indoor air through the olfactometer and evaluated the odor intensity and acceptability. It was found that there were large differences between the perceived odor intensity voted by panel and that by occupants. The lower perceived odor intensity by occupants might have been caused by olfactory fatigue. As a result of VOCs measurements, 2-Ethyl-1-Hexanol, Nonanal, and Decanal were detected probably as ingredients of bioeffluents. The high correlation coefficient between the perceived odor intensity and 2-Ethyl-1-Hexanol concentration was obtained.

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Oil mist generated in commercial kitchens has a serious influence on worker's health and may make an odor problem. Therefore many research works have been recently reported on oil mist emitted from cooking equipment such as fryers and griddles in USA (ASHRAE 745-RP Final Report etc.) and in Japan. In this paper, particle size distributions emitted from griddle and fryer were measured with two measurement systems (WPS and SMPS/APS) and the results showed that size of almost all particles was under 1μm. However oil mist includes relatively large particles over 1μm which should not be neglected when cleanness in kitchen especially in the vicinity of cooking equipment is discussed. This paper also examined the aerosol dynamics of oil mist under 1μm. The results showed gravitational settling, coagulation and Brownian diffusion had no important effect on oil mist distribution in kitchens and oil mist under 1μm can be treated as passive scalar in CFD simulation.

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The purposes of this study are to confirm the lowest level of odor in the living-dining rooms with kitchen (LDKs) and to examine the difference between residents and panel on the odor evaluations. Odor samples for olfactory measurements were collected in LDKs of 40 by residents. We measured odor concentration of odor samples by the triangle odor bag method. In addition odor intensity, odor hedonics, and odor quality of odor samples were evaluated by panel and residents. The odor concentration showed 10 - 1700 and the average was 70. The measurement values of 9 LDKs were higher than the outdoor regulation standard. On the 6-step odor intensity, the average of panel was 3.2 and the average of residents was 0.4. On the 9-step odor hedonics, the average of panel was -1.4 and the average of residents was 1.6. The difference between residents and panel for the intensity and the odor hedonics was about 3 steps.

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This study performed a field survey on buildings with desiccant HVAC system using solar thermal and well water. By comparing this system with conventional air conditioning system, the impacts of introducing the system are examined. The results are as follows.
1. When using the system, the room temperature was kept at about 0.7 °C higher than when using conventional air conditioning in winter, and the humidity was kept at about 1.1g/kg(DA) lower than when using conventional air conditioning in summer.
2. From the results of the questionnaire survey on the indoor thermal environment, it became clear that the system performed equally or better than conventional air conditioning on thermal environment.
3. This system was able to reduce about 90% of the fresh air load in winter. In addition, this system reduced about 74kWh/day of the indoor load in winter.
4. This system reduced about 17% of the air-conditioner cooling load in summer. In addition, the system reduced loads greater than the fresh air loads, and was able to reduce not only the fresh air loads but also part of indoor loads in summer.
5. The average operating rate of this system was about 41% in winter and about 84% in summer.

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The purpose of this study is to analyze the health determinant factors of housing and regional environment in the suburb of Kitakyushu. A questionnaire survey was carried out among the middle-aged and elderly people in Yatsue district, the city of Kitakyushu, in order to clarify the respective influence of houses and regional environment, including the various surrounding environments, on residents' health. As for self-rated health, 80% of the respondents claimed, “I am in good health” or “I am not in bad health”, and there was no great distinction among age groups. Health related factors modeling showing the relations among housing, regional environments, and health was proposed, based on structural equation modeling. This model indicated that 23% of residents' health may be dependent on the influences of their houses and regional environments. This model also showed that residents' health had strong correlation to questionnaire items such as “indoor thermal environment” of houses, and “community activities”, “neighborship” and “green space” for regional environments. Therefore, it is possible that residents' health may require appropriate maintenance through creation of good house and regional environment.

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In aims to meet the goal of 25% CO2 emission reduction compared to 1990 by 2020, the government has been developing policies on insulation renovations. In order to achieve the previously stated target, all existing houses are required to conduct insulation renovation. Thus, investigations on insulation efficiencies of existing apartments are necessary to verify the effect of insulation renovation on CO2 emissions. The Energy-Saving Standard, which sets the insulation efficiency of housings, was first presented in 1980, followed by the New Energy-Saving Standard in 1992 and the Next-Generation Energy-Saving Standard in 1999. Therefore, insulation efficiencies of housings are considered to be diverse depending on the age of completion. Research on the actual situation of insulation efficiencies in detached houses exists, but those on existing apartments are insufficient. In this study, we investigate the actual situation of insulation efficiencies of existing apartments and conduct an analysis on energy savings and reduction in utility costs through insulation renovation of existing apartments with different insulation efficiencies.

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