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³í¹®¸í °ø±Þ ³Ã¼ö¿Âµµ ¼¾¼­ °áÇÔÀÌ ³Ã¹æ½Ã½ºÅÛ¿¡ ¹ÌÄ¡´Â ¿µÇâ Æò°¡ / Evaluation of Influence on Cooling System by Faulty Temperature Sensor of Supply Chilled Water
ÀúÀÚ¸í Áø»ê(San Jin) ; ±èµ¿¼ö(Dongsu Kim) ; µµ¼º·Ï(Sung Lok Do)
¹ßÇà»ç ´ëÇÑ°ÇÃàÇÐȸ
¼ö·Ï»çÇ× ´ëÇÑ°ÇÃàÇÐȸ³í¹®Áý, Vol.39 No.8 (2023-08)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(207) ÃÑÆäÀÌÁö(7)
ISSN 2733-6247
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ÁÖÁ¦¾î ³Ã¹æ½Ã½ºÅÛ; °ø±Þ ³Ã¼ö¿Âµµ ¼¾¼­; ¼¾¼­ °áÇÔ; ¿­ÄèÀû¼º; ¿¡³ÊÁö »ç¿ë·® ; Cooling System; Supply Chilled Water Temperature Sensor; Faulty Sensor; Thermal Comfort; Energy Consumption1)
¿ä¾à1 °Ç¹° ³» ³Ã¹æ½Ã½ºÅÛÀº ½Ç³»¿Âµµ ¹× ½Àµµ À¯Áö¸¦ ÅëÇØ ÄèÀûÇÑ ½Ç³» ¿­È¯°æÀ» Á¶¼ºÇϱâ À§ÇØ °¡µ¿µÈ´Ù. ³Ã¹æ½Ã½ºÅÛÀÌ ÃÖÀûÀÇ »óÅ ÇÏ¿¡ °¡µ¿µÇ±â À§Çؼ­´Â ³Ãµ¿±â ÃⱸÃø ³Ã¼ö¿Âµµ(°ø±Þ ³Ã¼ö¿Âµµ)ÀÇ Á¤È®ÇÑ ÃøÁ¤ÀÌ ¿ä±¸µÈ´Ù. ±×·¯³ª °ø±Þ ³Ã¼ö¿Âµµ ¼¾¼­´Â ³ëÈÄÈ­ ¹× ȯ°æÀûÀÎ ¿äÀÎÀ¸·Î ÀÎÇØ Á¾Á¾ °áÇÔÀÌ ¹ß»ýÇÑ´Ù. °ø±Þ ³Ã¼ö¿Âµµ ¼¾¼­¿¡ °áÇÔÀÌ ¹ß»ýÇÒ °æ¿ì, ÀÌ´Â ³Ã¹æ½Ã½ºÅÛÀÇ ¼º´É °¨¼Ò ¹× ¿¡³ÊÁö »ç¿ë·® Áõ°¡¸¦ ¾ß±âÇÑ´Ù. ´õ ³ª¾Æ°¡ ³Ã¹æ½Ã½ºÅÛÀÌ Áö¼ÓÀûÀ¸·Î °ø±Þ ³Ã¼ö¿Âµµ ¼¾¼­ °áÇÔ ÇÏ¿¡ ¿î¿ëµÉ °æ¿ì, ½Ç³» ¿­È¯°æ¿¡ ºÎÁ¤ÀûÀÎ ¿µÇâÀ» ¹ÌÄ£´Ù. µû¶ó¼­ °ø±Þ ³Ã¼ö¿Âµµ ¼¾¼­ÀÇ °áÇÔÀÌ ³Ã¹æ½Ã½ºÅÛ¿¡ ¹ÌÄ¡´Â ¿µÇâ¿¡ ´ëÇÑ Æò°¡°¡ ÇÊ¿äÇÏ´Ù. º» ¿¬±¸´Â EnergyPlus ½Ã¹Ä·¹ÀÌ¼Ç ÅøÀ» ÀÌ¿ëÇÏ¿© ¼¾¼­¿¡ ¹ß»ýÇÏ´Â °áÇÔÀÇ ½É°¢µµ(Áï, Offset)¿¡ µû¸¥ ¿­È¯°æ ¹× ¿¡³ÊÁö »ç¿ë·®À» ºÐ¼®ÇÏ¿´´Ù. ½Ã¹Ä·¹ÀÌ¼Ç °á°ú¿¡ ±â¹ÝÇÑ ºÐ¼® °á°ú, À½ÀÇ °ªÀ» °¡Áö´Â OffsetÀº ½Ç³» ¿­È¯°æ¿¡ ºÎÁ¤ÀûÀÎ ¿µÇâÀ» ¹ÌÄ¡¸ç, ¾çÀÇ °ªÀ» °¡Áö´Â OffsetÀº ¿¡³ÊÁö »ç¿ë·® Áõ´ëÀÇ ¹®Á¦¸¦ ¾ß±âÇÏ¿´´Ù.
¿ä¾à2 A cooling system at a building operates to maintain indoor temperature and humidity to meet a certain thermal comfort level for occupants.
The temperature sensor for the supply chilled water is a vital component for the proper operation of the cooling system. A malfunctioning
temperature sensor, leading to discrepancies between actual and measured temperature values, can result in degraded cooling system
performance and an increase in cooling energy consumption. If the sensor fault is continued, in addition, indoor thermal environment cannot
be properly maintained. Therefore, there is a need to evaluate influences of the faulty sensor during operation of the cooling system. This
study conducted energy and thermal analysis using the EnergyPlus simulation program by varying sensor fault offsets which represents a
faulty sensor. Based on the simulation results, this study concluded that negative offsets adversely affected indoor thermal comfort, while
positive offsets increased cooling energy consumption.
¼ÒÀåó ´ëÇÑ°ÇÃàÇÐȸ
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DOI https://doi.org/10.5659/JAIK.2023.39.8.207
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