A Study on the Energy Performance Evaluation of a Smart Skin for Reducing Cooling Load of Building Envelope in Office Building

Min, Jo Young; Hiki, Hong

doi:10.6110/kjacr.2018.30.11.546

Cited by 2 publications

(2 citation statements)

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“…Nundy and colleagues compared the physical properties, such as wavelength and temperature, of double-glazed windows, SPD, and Vacuum-SPD [12]. In Min et al, simulation analysis was conducted on the cooling load in summer for the U-value of SPD and the maximum and minimum values of SHGC [13]. Ko et al evaluated the energy performance of smart windows according to the WWR and the g-value range of SPD [14].…”

Section: Introductionmentioning

confidence: 99%

Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings

2021

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The concept of smart windows that can change the properties of windows and doors in response to external stimuli has recently been introduced. Smart windows provide superior energy savings and control of indoor environments. This concept can advance sustainable architecture, and it will make it possible to connect with the fourth industry, which has developed recently. However, unlike the relevant hardware, is advancing rapidly, research on methods of adjusting smart windows is slow. Therefore, in this study, an analysis of energy use over time was conducted on electrochromic windows, one of the main types of smart windows. Through this analysis, the optimal properties of electrochromic smart windows were identified, and an operation schedule was created. In addition, energy saving rates were derived through a comparison with existing architectural windows.

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Section: Introductionmentioning

confidence: 99%

Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings

2021

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“…As a result, when SPD film was applied to clear glass with a U-value of 0.77 W/m 2 •K, 30% of cooling energy and 27.8% of heating energy were reduced. However, this study had a limitation in that the target of comparison was clear glass, and real-time SPD control was not applied [17,18]. Ko et al compared and analyzed cooling and heating energy requirements according to window area ratios and controllable solar heat gain coefficient (SHGC) ranges for SPD windows.…”

Section: Introductionmentioning

confidence: 99%

Energy Consumption Verification of SPD Smart Window, Controllable According to Solar Radiation in South Korea

Hiki

et al. 2020

Energies

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Between 60% and 70% of the total energy load of a house or office occurs through the exteriors of the building, and in the case of offices, heat loss from windows and doors can approach 40%. A need for glass that can artificially control the transmittance of visible light has therefore emerged. Smart windows with suspended particle device (SPD) film can reduce energy consumption by responding to environmental conditions. To measure the effect of SPD windows on the energy requirements for cooling and heating in Korea, we installed a testbed with SPD windows. With TRNSYS18, the comparison between measurements and simulation has been made in order to validate the simulation model with respect to the modeling of an SPD window. Furthermore, the energy requirements of conventional and SPD-applied windows were compared and analyzed for a standard building that represented an actual office building. When weather for the city of Anseong and a two-speed heat pump were used to verify the simulation, the simulated electricity consumption error compared with the testbed was −1.0% for cooling and −0.9% for heating. The annual electricity consumption error was −0.9%. When TMY2 Seoul weather data were applied to the reference building, the decrease in electricity consumption for cooling in the SPD model compared with the non-SPD model was 29.1% and the increase for heating was 15.8%. Annual electricity consumption decreased by 4.1%.

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A Study on the Energy Performance Evaluation of a Smart Skin for Reducing Cooling Load of Building Envelope in Office Building

Cited by 2 publications

References 0 publications

Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings

Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings

Energy Consumption Verification of SPD Smart Window, Controllable According to Solar Radiation in South Korea

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