Abstract
In this study, an office building in Japan that incorporates energy-saving features and environmental technologies was investigated. This office building features a green façade, natural ventilation, a concrete slab with no suspended ceilings, and thermo-active building systems. Two airconditioning systems were installed in this building—a ceiling radiation air-conditioning system and a whole floor-blow off air conditioning system. In addition, a natural ventilation system was installed. We surveyed the heat flux of the ceiling surface and indoor thermal environment of this building from 2015 through 2016. The ceiling using the heat storage amount of concrete maintains a constant temperature in the workplace during as well as after office hours. We also performed detailed measurements of the heat flux of the ceiling surface and indoor thermal environment in the summer of 2017. The results showed that the ceiling radiation air-conditioning system provided a stable thermal environment. Furthermore, we report that making use of the thermal behavior of the skeleton improved the operation of the ceiling radiation airconditioning system.
Highlights
On March 11, 2011, the Great East Japan Earthquake occurred
After office hours, when the air conditioner was switched off, the indoor temperature was stable near 26 °C because of the use of thermal capacity
It was confirmed that the indoor temperature was relatively stable when the natural ventilation system was operational during office hours
Summary
On March 11, 2011, the Great East Japan Earthquake occurred. Ceilings fell in many buildings, and restrictions on power consumption forced offices to cut back on lighting and air conditioning. The floor plan of the building has an open hallway along the windows as a "perimeter aisle", and the building has a green façade. These function as a thermal buffer zone. The ceiling radiation air-conditioning system employs a reverse slab structure. The radiation airconditioning system employs a ceiling consisting of a concrete slab with a large thermal capacity; this raises the comfort and stability of the indoor thermal environment. The concrete ceiling with large thermal capacity can perform heat storage of early-morning cool air. This building was highlighted with the aid of TABS. We report that making use of the thermal behavior of the skeleton improved the operation of the ceiling radiation air-conditioning system
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
