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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.2, 2010³â, pp.45-54
´ÜÀϽÉÁ¤ Áö¿­È÷Æ®ÆßÇÁÀÇ ¼öÄ¡Àû ¸ðµ¨¸µ Part II: ´ÜÀϽÉÁ¤ Áö¿­È÷Æ®ÆßÇÁÀÇ ¼º´ÉÆò°¡¸¦ À§ÇÑ ¸Å°³º¯¼ö ¿¬±¸
( Numerical Simulation of Standing Column Well Ground Heat Pump System Part II: Parametric Study for Evaluation of the Performance of Standing Column Well )
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º» ³í¹®¿¡¼­´Â µ¿¹Ý³í¹®¿¡¼­ ±¸ÃàµÈ ¼öÄ¡ÇØ¼® ¸ðµ¨À» ÀÌ¿ëÇÏ¿© SCWÀÇ ¼º´ÉÀ» Æò°¡Çϱâ À§ÇÑ ¸Å°³º¯¼ö¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ¸Å°³º¯¼ö¿¬±¸¿¡´Â °ø±Ø·ü, Åõ¼ö°è¼ö, ¿­Àüµµµµ, ºñ¿­, Áö¿­°æ»ç µî 5°³ÀÇ Áö¹Ýȯ°æº¯¼ö¿Í À¯·®, ½ÉÁ¤½Éµµ, ½ÉÁ¤Á÷°æ, À¯ÀÔ°ü Á÷°æ, ºí¸®µùÀ²ÀÇ ¼³°èº¯¼ö°¡ Àû¿ëµÇ¾ú´Ù. ¼öÄ¡ÇØ¼®Àº 24½Ã°£ ¿¬¼Ó°¡µ¿°ú °¡µ¿ ÁßÁö¸¦ ¹Ýº¹ÇÏ´Â 14Àϰ£ÀÇ °¡µ¿ µÎ °¡Áö·Î ¼öÇàµÇ¾ú´Ù. ÇØ¼®°á°ú SCW ¼º´É¿¡ Áß¿äÇÑ ¿µÇâÀ» ¹ÌÄ¡´Â º¯¼ö´Â ¿­Àüµµµµ, ¼ö¸®Àüµµµµ, Áö¿­°æ»ç, À¯·®, ½ÉÁ¤ ½Éµµ, ºí¸®µùÀ²ÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¿­Àüµµµµ°¡ ³ôÀ»¼ö·Ï SCWÀÇ È¿À²ÀÌ Çâ»óµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Áö¿­°æ»ç°¡ Ŭ¼ö·Ï ½ÉÁ¤ ÀúºÎÀÇ ¿Âµµ°¡ Áõ°¡ÇÏ¿© ³­¹æ¸ðµå¿¡¼­´Â È¿À²ÀÌ Çâ»óµÇÁö¸¸, ³Ã¹æ¸ðµå¿¡¼­´Â À¯ÀÔ¼öÀÇ ¿Âµµ°¡ Áõ°¡ÇÏ¿© ¿ÀÈ÷·Á È¿À²ÀÌ °¨¼ÒÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¼ö¸®Àüµµµµµµ´Â $10^{-4}m/s$ ÀÌ»óÀÏ °æ¿ì¿¡´Â Å« ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖÀ¸³ª $10^{-6}m/s$ ÀÌÇÏ¿¡¼­´Â ¿µÇâÀÌ ÀûÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ½ÉÁ¤½Éµµ°¡ Áõ°¡ÇÒ¼ö·Ï SCWÀÇ È¿À²ÀÌ Çâ»óµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µÁö¸¸ ½ÉÁ¤½Éµµ¸¦ ³ôÀϼö·Ï ½Ã°øºñ°¡ Áõ°¡ÇÏ°Ô µÈ´Ù. ºí¸®µùÀ» Àû¿ëÇϸç Ãß°¡ÀûÀÎ ºñ¿ë ¾øÀÌ ½ÉÁ¤¿Âµµ¸¦ Á¶ÀýÇÒ ¼ö ÀÖÀ¸¸ç ¼º´ÉÀ» Çâ»ó½Ãų ¼ö ÀÖ´Â ¸Å¿ì È¿°úÀûÀÎ ¹æ¹ýÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ´Ü, ºí¸®µùÀº À¯Ãâ¼ö¸¦ ¹èÃâÇÒ °ø°£ÀÌ È®º¸µÇ¸ç ÁöÇϼö·®ÀÌ Ç³ºÎÇÑ °æ¿ì¿¡¸¸ Àû¿ëÇÒ ¼ö ÀÖ´Ù. º» ¸Å°³º¯¼ö ¿¬±¸°á°ú, SCWÀÇ ¼º´É¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ¿ä¼Ò´Â ¸Å¿ì ´Ù¾çÇϸç À̵éÀÇ º¹ÇÕÀûÀÎ ¿µÇâÀ» Á¤È®ÇÏ°Ô ±Ô¸íÇϱâ À§Çؼ­´Â ¼öÄ¡Àû ¸ðµ¨À» ¼öÇàÇØ¾ß ÇÒ Çʿ䰡 ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The SCW numerical model described in the companion paper was used to carry out a comprehensive parametric study to evaluate the performance of the SCW. The five ground related parameters, which are porosity, hydraulic conductivity, thermal conductivity, specific heat, geothermal gradient, and five SCW design parameters, which are pumping rate, well depth, well diameter, dip tube diameter, bleeding rate, were used in the study. Two types of numerical simulations were performed. The first type was used to perform short-term (24-hour) simulation, while the second type 14 day simulation. The study results indicate that the parameters that have important influence on the performance of SCW were hydraulic conductivity, thermal conductivity, geothermal gradient, pumping rate, and bleeding rate. The thermal conductivity had the most important influence on the performance of the SCW. With the increase in the geothermal gradient, the performance increased in the heat mode, but decreased in the cooling mode. The hydraulic conductivity influenced the performance when the value was larger than $10^{-4}m/s$. The depth of the well increased the performance, but at the cost of increased cost of boring. The bleeding had an important influence on SCW, greatly enhancing the performance at a limited increased cost of operation. Overall, this study showed that various factors had a cumulative influence on the performance of the SCW, and a numerical simulation can be used to accurately predict the performance of the SCW.
 
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Design parameters;Geothermal heat pump;Numerical analysis;Parametric study;Standing column well;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.2, 2010³â, pp.45-54
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201023064630786)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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