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R744, R290 È¥ÇÕ ³Ã¸ÅÀÇ È¥ÇÕ ºÐÀ²¿¡ µû¸¥ ¸ð¹ÙÀÏ¿ë È÷Æ®ÆßÇÁÀÇ ¼º´É ºñ±³ / A Study on the Performance Comparison of a Mobile Heat Pump Based on the Mixing Ratio of R744 and R290 Refrigerant Mixture |
ÀúÀÚ¸í |
±Ç¹ÎÁö(Minji Kwon) ; ±èµÎÇö(Duhyun Kim) ; À±¸°(Rin Yun) |
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¼³ºñ°øÇÐ³í¹®Áý, Vol.37 No.05 (2025-05) |
ÆäÀÌÁö |
½ÃÀÛÆäÀÌÁö(236) ÃÑÆäÀÌÁö(9) |
ÁÖÁ¦¾î |
ÀÌ»êÈź¼Ò; ³Ã¹æ ¼º´É; ³¹æ ¼º´É; ¸ð¹ÙÀÏ È÷Æ®ÆßÇÁ; ÀÚ¿¬ ³Ã¸Å; ÇÁ·ÎÆÇ ; Carbon dioxide; Cooling capacity; Heating capacity; Mobile heat pump; Natural refrigerant; Propane |
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º» ¿¬±¸¿¡¼´Â R744¿Í R290 È¥ÇÕ ³Ã¸ÅÀÇ È¥ÇÕ ºÐÀ²¿¡ µû¸¥ È÷Æ®ÆßÇÁ ½Ã½ºÅÛÀÇ ³Ã¡¤³¹æ ¼º´É, COP, ±×¸®°í ³Ã¸Å ÃæÁø·® º¯È¸¦ ºÐ¼®Çϱâ À§ÇØ ACHP ±â¹Ý È÷Æ®ÆßÇÁ ¼³°è ÇÁ·Î±×·¥À» Ȱ¿ëÇÏ¿© È÷Æ®ÆßÇÁ ±¸¼º ¿ä¼Ò¸¦ ¼³°èÇÏ°í ´ÙÀ½°ú °°Àº °á·ÐÀ» µµÃâÇÏ¿´´Ù. (1) R290 Áú·® ºÐÀ²ÀÌ Áõ°¡ÇÒ¼ö·Ï ³Ã¡¤³¹æ ¼º´ÉÀÌ Çâ»óµÇ¾ú´Ù. ³Ã¹æ ¸ðµåÀÇ °æ¿ì R290 Áú·® ºÐÀ²¿¡ µû¸¥ ¼º´ÉÀº ÃÖ´ë 55.5%ÀÇ Â÷À̸¦ º¸¿´À¸¸ç, ³¹æ ¸ðµå¿¡¼´Â ÃÖ´ë 54.53%ÀÇ ¼º´É Â÷À̰¡ ¹ß»ýÇÏ¿´´Ù. (2) COP ¿ª½Ã ³Ã¡¤³¹æ ¼º´É°ú ¸¶Âù°¡Áö·Î R290 Áú·® ºÐÀ²ÀÌ Áõ°¡ÇÒ¼ö·Ï Çâ»óµÇ¾ú´Ù. ±×·¯³ª R-404A ¾ÐÃà±âÀÇ ¼Òºñ µ¿·Â Â÷ÀÌ·Î ÀÎÇØ COP´Â ¼±ÇüÀûÀÎ º¯È¸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. COP´Â R290 Áú·® ºÐÀ²¿¡ µû¶ó ³Ã¹æ ¸ðµå¿¡¼ ÃÖ´ë 38.44%, ³¹æ ¸ðµå¿¡¼ ÃÖ´ë 40.24%ÀÇ Â÷À̸¦ º¸¿´´Ù. (3) ³Ã¸Å ÃæÁø·®Àº R290 Áú·® ºÐÀ²ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ¼±ÇüÀûÀ¸·Î °¨¼ÒÇÏ´Â °æÇâÀ» ³ªÅ¸³Â´Ù. ÀÌ´Â R290°ú R744ÀÇ ¹Ðµµ Â÷ÀÌ¿Í ±â°ø·ü Â÷ÀÌ¿¡ ±âÀÎÇÑ °á°ú·Î ºÐ¼®µÈ´Ù. ³Ã¸Å ÃæÁø·®Àº ³Ã¹æ ¸ðµå¿¡¼ ÃÖ´ë 51.95%, ³¹æ ¸ðµå¿¡¼ ÃÖ´ë 56%ÀÇ Â÷À̸¦ º¸¿´´Ù. (4) R290ÀÇ Áú·® ºÐÀ²ÀÌ 0.8ÀÎ R744&R290 È¥ÇÕ ³Ã¸Å¸¦ ¼ø¼ö R290 È¥ÇÕ ³Ã¸Å¿ÍÀÇ COP¸¦ ºñ±³ÇÏ¿´À» ¶§, R290ÀÇ COP´Â ³Ã¹æ ½Ã ÃÖ´ë 19.42%, ³¹æ ½Ã ÃÖ´ë 17.6% ³ô¾Æ, È¥ÇÕ ³Ã¸Åº¸´Ù ¿ì¼öÇÑ ¼º´ÉÀ» ³ªÅ¸³Â´Ù. (5) ¼ø¼ö R290ÀÇ ³Ã¸Å ÃæÁø·®Àº ¸ðµç ³Ã¹æ ¹× ³¹æ Á¶°Ç¿¡¼ R744&R290 È¥ÇÕ ³Ã¸Åº¸´Ù Àû¾úÀ¸¸ç, ³Ã¹æ Á¶°Ç¿¡¼´Â ÃÖ´ë 30.72%, ³¹æ Á¶°Ç¿¡¼´Â ÃÖ´ë 27.2% ÀûÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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This study aimed to analyze the heating and cooling capacity and refrigerant charge variation according to the mixing ratio of R744 and R290 in a mobile heat pump system. Results showed that as the mass fraction of R290 increased, both heating and cooling capacity, as well as the coefficient of performance (COP), improved. In particular, performance differences were observed depending on the outdoor temperature. The maximum difference was 55.5% in cooling mode and 54.5% in heating mode. When applying an R-404A compressor for the present model, the COP did not exhibit a linear increase within the R290 mass fraction range of 0.4 to 0.6. Additionally, the refrigerant charge decreased linearly with an increasing R290 mass fraction, attributed to the differences in density and void fraction between R744 and R290. The maximum reduction for refrigerant charge was 52.0% in cooling mode and 56% in heating mode. This study confirms that the compressor can significantly impact the overall performance of the heat pump system, indicating that compressor selection is a critical factor in the design process of a mobile heat pump system utilizing an R290 and R744 mixture. |