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´ëÇѼ³ºñ°øÇÐȸ 2017³âµµ ÇϰèÇмú¹ßÇ¥´ëȸ (2017-06) |
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»ó¾÷¿ë °Ç¹° ; ºÎºÐ ºÎÇÏÀ² ; ³¹æ¿¿ø±â±â ; ¿¡³ÊÁöÇ÷¯½º ; Commercial building ; Part load ratio ; Boiler ; EnergyPlus |
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Commercial buildings account for significant portions of the total building energy in Korea and thus a variety of research on the boiler operation was carried out thus far. However, most of the researches were carried out on the boiler itself, i.e., the part load ratio characteristics and the corresponding gas consumption patterns were not analysed in the existing studies. In this study, the part load ratio and the operating characteristics of gas boiler were analysed within an office building equipped with the conventional variable air volume system. In addition, the gas consumption among different boiler staging schemes was comparatively analysed. As a result, significant portions of total operating hours, heating load and gas consumption turned out to be in the part load ratio range and thus the energy consumption was significantly affected by the boiler efficiency at low part load conditions. In addition, utilizing sequential boiler staging scheme can save gas usage by 6%. |