INFLUENCE OF FLOOR HEATING TEMPERATURE ON THE HUMAN BODY SEATED ON THE FLOOR : In the case of electric floor heating system

Kim, Bong-Ae; Isoda, Norio; Yanase, Takuko

doi:10.3130/aijax.417.0_19

Cited by 5 publications

(3 citation statements)

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“…Their findings showed that the optimum temperature for the floor surface was within 25-32°C, and that for the air was within 23-25°C. There have also been several studies on the thermal effect of posture on the human body situated on a heated floor (Kim B et al, 1990;Narumi et al, 1996;Kurazumi et al, 1999). The Japanese typically spend the time in their living rooms in different postures (e.g., sitting in a chair, sitting or lying directly on the floor).…”

Section: Discussionmentioning

confidence: 99%

Physiological and Subjective Responses in the Elderly When Using Floor Heating and Air Conditioning Systems

Hashiguchi

Tochihara

Ohnaka

et al. 2004

J. Physiol. Anthropol.

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The purpose of this study was to investigate the effects of a floor heating and air conditioning system on thermal responses of the elderly. Eight elderly men and eight university students sat for 90 minutes in a chair under the following 3 conditions: air conditioning system (A), floor heating system (F) and no heating system (C). The air temperature of sitting head height for condition A was 25 degrees C, and the maximum difference in vertical air temperature was 4 degrees C. The air and floor temperature for condition F were 21 and 29 degrees C, respectively. The air temperature for condition C was 15 degrees C. There were no significant differences in rectal temperature and mean skin temperature between condition A and F. Systolic blood pressure of the elderly men in condition C significantly increased compared to those in condition A and F. No significant differences in systolic blood pressure between condition A and F were found. The percentage of subjects who felt comfortable under condition F was higher than that of those under condition A in both age groups, though the differences between condition F and A was not significant. Relationships between thermal comfort and peripheral (e.g., instep, calf, hand) skin temperature, and the relationship between thermal comfort and leg thermal sensation were significant for both age groups. However, the back and chest skin temperature and back thermal sensation for the elderly, in contrast to that for the young, was not significantly related to thermal comfort. These findings suggested that thermal responses and physiological strain using the floor heating system did not significantly differ from that using the air conditioning system, regardless of the subject age and despite the fact that the air temperature with the floor heating system was lower. An increase in BP for elderly was observed under the condition in which the air temperature was 15 degrees C, and it was suggested that it was necessary for the elderly people to heat the room somehow in winter. Moreover, it is particularly important for elderly people to avoid a decrease in peripheral skin temperature, and maintain awareness of the warmth of peripheral areas, such as the leg, in order to ensure thermal comfort.

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Section: Discussionmentioning

confidence: 99%

Physiological and Subjective Responses in the Elderly When Using Floor Heating and Air Conditioning Systems

Hashiguchi

Tochihara

Ohnaka

et al. 2004

J. Physiol. Anthropol.

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“…3. Researches on the amenity of the floor heating were carried out from the following viewpoints; difference of posture (Isoda et al, 1986b;Lee et al, 1997a), direct or indirect exposure to heated floor (Kim et al, 1987;Kim et al, 1990), difference of finishing materials of floor (Kim et al, 1989), radiant heating or cooling (Lee et al, 1997b;Mitsuda et al, 1997) and difference of heating system (Isoda et al, 1996). Enomoto et al (1994) conducted an experimental study of the effect of radiant heating on the elderly.…”

Section: ) Tokyo Metropolitan University (See Fig 2)mentioning

confidence: 99%

A Review of Floor Heating Research in Japan

Watanabe

2001

JHES

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Floor heating systems have been recently become popular in Japanese houses. Many researchers have conducted their researches on floor heating from the viewpoint of creating a comfortable living environment in winter. They have gotten valuable information for architects, engineers and occupants. The objective of this paper is to review the previous studies on the effect of floor heating systems on human thermal comfort in Japan. Aims and findings of each research group are summarized based on research papers presented from 1975 to 1997 in Japan. Comfort zones, recommended conditions and limit conditions for humans using the floor heating system proposed by each researcher were illustrated in the charts consisting of air temperature and floor surface temperature. This review will contribute to the progress of future floor heating research.

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“…Another important subject is the influence of floor heating systems, because Japanese often sit on the floor. Most experiments aim to specify the optimal combination of floor and air temperatures [29]. Oyama et al [30] exposed subjects to floor heating for 4 h in a Japanese style house.…”

Section: Effect Of a Ir Movementmentioning

confidence: 99%

A Review of Thermal Comfort Studies in Japan

Horikoshi¹

1993

Indoor Built Environ

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More than 50 papers on thermal comfort are presented in various meetings and symposia every year in Japan. Topics covered by these papers include comfort zone, the effect of fluctuating air movement and asymmetric thermal radiation on human responses, the dynamic analysis of human responses, psychological and behavioral aspects of thermal comfort, and the development of environmental indices, to name a few. This paper briefly reviews these investigations.

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INFLUENCE OF FLOOR HEATING TEMPERATURE ON THE HUMAN BODY SEATED ON THE FLOOR : In the case of electric floor heating system

Cited by 5 publications

References 0 publications

Physiological and Subjective Responses in the Elderly When Using Floor Heating and Air Conditioning Systems

Physiological and Subjective Responses in the Elderly When Using Floor Heating and Air Conditioning Systems

A Review of Floor Heating Research in Japan

A Review of Thermal Comfort Studies in Japan

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