NAKHARA (Journal of Environmental Design and Planning)

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The objective of this study is to develop guidelines for thermal comfort and energy efficiency for senior centers during winter. The study was conducted in Phitsanulok, Thailand and it three methods were applied in development of the guidelines: field survey, laboratory study, and simulation in scSTREAM - a CFD program -- and Visual DOE 4.0 program. With a temperature set-point of 25.0 °C in the existing air-conditioned senior centers, the study shows that occupants feel "Slightly cool". These feelings change to "Neutral" when natural ventilation and fans are used to generate air speed of 0.57 - 0.60 m/s during the hours of 8:00 AM - 1:00 PM, and by setting the temperature set-point at 26.0 °C with air speed of 0.10 - 0.26 m/s during the afternoon, from 1:00 PM - 4:00 PM. These guidelines can help reduce energy consumption by 23.0 % and can have general application for senior centers.

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