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The life cycle assessment on greenhouse gas emission of reinforced concrete buildings shows that more than 70 percent of greenhouse gas that is discharged by a building is discharged in the building maintenance stage, including cooling and heating. To reduce the greenhouse gas emission, maintenance planning to minimize the energy consumption is necessary in the design stage. In this paper, two heat storage rooms are tested to save the air cooling energy of the buildings. The specimens are essentially identical, except that chamber A contained paraffin sheets as the finishing material, while the other, chamber B, served as a control. The test results show that chamber A with the paraffin sheets exhibited less temperature change than chamber B without the sheets when temperature was increased outside of the specimens. The heating energy was probably consumed in the phase change of the paraffin sheets, which can be useful for reducing energy consumption related to air cooling during the summer.

Purpose This study aims to suggest the application of IoT-based integrated management system to public sports facilities(PSF) in order to improve the utilization and management of PSF by analyzing the actual state of PSF empirically Methods A survey was administered to managers(n=279) and users(n=500) of PSF in order to identify problems of current management and collect suggestions for improving the utilization and management of PSF. Previous research on establishing IoT-based system was also reviewed for considering the effectiveness of IoT technology Results Generally, PSF are in low utilization and operate in a deficit. The deficit operation is caused by high labor costs and management expenses. The survey result shows that there are many problems in management and utilization such as lack of equipment, deteriorated facilities, shortage of manpower and funding, limited programs, difficulties in promotion. The result also shows that PSF need to consider developing local demand-based programs, reducing management costs, extending opening hours, improving online booking system Conclusion To solve the problems of PSF in utilization and management, this study suggests that IoT-based integrated management system needs to be applied to PSF. It is expected that applying IoT-based integrated management system to PSF would improve operational effectiveness, ease of facility management, and user convenience.

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