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Buildings 2019, 9(1), 4; https://doi.org/10.3390/buildings9010004

An Investigation of the Behavioral Characteristics of Higher- and Lower-Temperature Group Families in a Condominium Equipped with a HEMS System

1
Graduate School of Environmental and Information Studies, Tokyo City University, Yokohama 224-8551, Japan
2
Tokyu Real Estate Co.Ltd, Next Generation Engineering Research Center, Tokyo 107-0062, Japan
*
Author to whom correspondence should be addressed.
Received: 28 November 2018 / Revised: 17 December 2018 / Accepted: 18 December 2018 / Published: 25 December 2018
(This article belongs to the Special Issue Occupant Comfort and Well-Being)
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Abstract

A home energy management system (HEMS) shows the energy used indoors so that the energy waste can be easily identified and reduced. Thermal comfort is related to the trend of energy use in buildings. We conducted a survey in a condominium equipped with a HEMS to determine the indoor thermal environment and various behaviors of the occupants taken for thermal comfort adjustment. The results showed that there is a large variation of indoor air temperatures according to season, floor and flat. We categorized families into two groups, one with higher and the other with lower average indoor temperatures. The indoor air temperature of the higher temperature group in summer was found to be higher than the recommended indoor temperature during the summer season in Japan. The higher temperature group tended to adopt behaviors, such as window opening and using a fan more often, than the lower temperature group. Due to the moderately high insulating levels in the building surveyed, the indoor air temperature of both groups was not low in winter. Heating was used less and irregular. The overall results indicate that the groups of families behaved differently to adjust the indoor thermal environment even though they were equipped with the same HEMS system. View Full-Text
Keywords: HEMS; indoor environment; air temperature; relative humidity; occupants’ behaviors HEMS; indoor environment; air temperature; relative humidity; occupants’ behaviors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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KC, R.; Rijal, H.B.; Shukuya, M.; Yoshida, K. An Investigation of the Behavioral Characteristics of Higher- and Lower-Temperature Group Families in a Condominium Equipped with a HEMS System. Buildings 2019, 9, 4.

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