Questionnaire survey

The indoor environmental quality and health of occupants in approximately 5000 dwellings were investigated by questionnaire covering the whole of Japan. The purpose of this survey was to clarify the association between indoor air quality and adverse health effects and to study effective ways of keeping indoor air clean using mechanical ventilation. Questionnaires were distributed to 7812 occupants living in mechanically ventilated houses across 47 Prefectures in Japan in February 2012 of which 5265 occupants replied.

A large number of indices have been developed to assess human bioclimatic conditions. The indices that could be considered valid in all climate and seasons are those that are based on calculations involving the heat balance equation. The aim of the present study is to evaluate the performance of selected existing indices based on body’s energy balance, in an outdoor built environment. A field questionnaire survey was carried out simultaneously with microclimatic measurements in a street canyon located in the centre of Athens, Greece.

This report describes the results from the questionnaire and detailed survey conducted in 2004 to 2006.The 15 items of questionnaire included in facilities management, maintenance management, savingenergy, art gallery facilities. The number of art galleries investigated by questionnaire survey is about171 art galleries in Japan. Then we scanned findings during about 1 year 6 months to get speculationhaving high reliability and summarized a tendency and a characteristic based on the result. Fromthesurvey results, it shows the tendency and characteristics about each item.

The purpose of this investigation is to know the present status of indoor air chemical pollution byVOCs in Japanese houses. The concentrations of formaldehyde, toluene, xylene, ethyl-benzene,styrene and acetaldehyde were measured in ten thousand built houses from 2000 to 2005. And thefollowing results were obtained. In 2000, the indoor concentrations of formaldehyde exceeded theguideline established by the Ministry of Health, Labor and Welfare of Japanese Government at thepercentage of 27%. And In the case of toluene the percentage was 12 %.

A questionnaire survey of urban Osaka apartment residents elicited data related to the use of airconditioners, portals, and electric fans as means of bearing summer heat. Those means respectiverelationships to respondents attributes, especially age, were investigated. Results show the following:1) regarding electricity expense awareness, younger respondents (under 40 years old) save electricitymore (p

The purpose of this investigation is to know the long term characteristics of VOC concentrations inhouses built before the building code in 2003 and to know the need of the countermeasures in thehouses were already built for example the improvement of the living habit, ventilation and buildingmaterials. The concentrations of VOCs were measured in these houses from 2000 to 2005. The resultsshowed that the concentration of formaldehyde decreased in the first year. After that the decline of theconcentration became invisible and the concentration changed only with the temperature.