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: 08-11-06 18:03
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ÀϹݰø½Ä ¸»°í Á»´õ ½É¿ÀÇÑ °ø½ÄÀÌ ÀÖ´Ù°í Çؼ ã¾Æº¸´Âµ¥ ÀÎÅÍ³Ý ¾îµð¸¦ ã¾ÆºÁµµ
½±°Ô ³ª¿ÀÁö¸¦ ¾Ê³»¿ä.
Reid RC, Prausnitz JM, Poling BE
ÀÌ ¼¼°¡Áö¿Í °ü·ÃµÈ °ø½Ä Á» ¾Ë·ÁÁÖ¼¼¿ä~^^
Stefano
08-11-06 21:09
(1) ÀοëÇÑ ºÐµéÀÇ °ø½ÄÀÌ µû·Î ÀÖ´Â °ÍÀÌ ¾Æ´Ï°í ¼¼ºÐÀº À¯¸íÇÑ ¾Æ·¡ÀÇ Ã¥À» Æì³½ ºÐÀÔ´Ï´Ù.
Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases and Liquids," McGraw-Hill, 4th Ed., 1987
(2) ÀϹÝÀûÀÎ ºñ¿(Specific Heat) ȤÀº ºñ¿¿ë·®(Specific Heat Capacity)Àº ÁÖ·Î ´ÙÇ×½ÄÀ¸·Î ÀÌ·ç¾îÁ® ÀÖ½À´Ï´Ù.
¾Æ·¡ÀÇ ¼ö½ÄÀ¸·Î ³ªÅ¸³»Áø ºñ¿¿ë·® µ¥ÀÌÅÍ°¡ °¡Àå ¸¹½À´Ï´Ù.
Cp = A + BT + CT^2 + DT^3.......................................(1) A~D:»ó¼ö, T=Àý´ë¿Âµµ
Á¤È¤µµ¸¦ ´õ ´ÃÀ̱â À§ÇØ 4Â÷, 5Â÷, µîÀ¸·Î Âþ¼ö¸¦ ´ÃÀÏ ¼ö ÀÖ°ÚÀ¸³ª Âþ¼ö¸¦ ´Ã¿©µµ Á¤È®µµ°¡ Å©°Ô ´Ã¾î³ªÁö ¾Ê´Â´Ù¸é °è»ê¸¸ º¹ÀâÇÏÁö À¯¸®ÇÑ Á¡Àº ¾ø½À´Ï´Ù.
(3) ºñ¿¿ë·® µ¥ÀÌÅÍ°¡ ¾øÀ» °æ¿ì ÃßÁ¤ÇÏ´Â ¼ö½Ä¿¡´Â ¸î°¡Áö ¸ðµ¨ ¼ö½ÄµéÀÌ ÀÖÁö¸¸ Á¤È®µµ¿¡ ´ëÇÑ ÀÚ·á°¡ ¾ø´Â °æ¿ì À̸¦ »ç¿ëÇϱⰡ ¾î·Æ½À´Ï´Ù.
(4) Æò±Õºñ¿ÀÇ °è»ê
À§ÀÇ (1)½ÄÀ» ÀÌ¿ëÇؼ T1~T2±¸°£ÀÇ Æò±Õ ºñ¿Àº ´ÙÀ½ ½ÄÀ¸·Î ±¸ÇÕ´Ï´Ù.
Cp, mean between T1 and T2 = (ÀûºÐ±¸°£ T1~T2 ¡òCp dT) /(T2-T1).................(2)
(5) T1~T2±îÁö °¡¿Çϴµ¥ ¼Ò¿äµÇ´Â ¿·®,
Q = (ÀûºÐ±¸°£ T1~T2 ¡òCp dT) .........(3)
= A*(T2-T1) + (B/2)(T2^2-T1^2)+ (C/3)(T2^3-T1^3)+ (C/4)(T2^4-T1^4).......(3)
(6) ¾ÆÁ÷±îÁö´Â (1)½ÄÀ¸·Î ³ªÅ¸³»´Â ºñ¿¸»°í´Â ³Î¸® ¾Ë·ÁÁø ¼ö½ÄÀÌ °ÅÀÇ ¾ø±â ¶§¹®¿¡ ±× "½É¿ÀÇÑ °ø½Ä" À̶ó´Â °ÍÀÌ ¾Æ¸¶µµ (1)~(3)ÀÇ ½ÄµéÀ» ¾ð±ÞÇÏ´Â °ÍÀ¸·Î º¾´Ï´Ù.
(1) ÀοëÇÑ ºÐµéÀÇ °ø½ÄÀÌ µû·Î ÀÖ´Â °ÍÀÌ ¾Æ´Ï°í ¼¼ºÐÀº À¯¸íÇÑ ¾Æ·¡ÀÇ Ã¥À» Æì³½ ºÐÀÔ´Ï´Ù. Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases and Liquids," McGraw-Hill, 4th Ed., 1987 (2) ÀϹÝÀûÀÎ ºñ¿(Specific Heat) ȤÀº ºñ¿¿ë·®(Specific Heat Capacity)Àº ÁÖ·Î ´ÙÇ×½ÄÀ¸·Î ÀÌ·ç¾îÁ® ÀÖ½À´Ï´Ù. ¾Æ·¡ÀÇ ¼ö½ÄÀ¸·Î ³ªÅ¸³»Áø ºñ¿¿ë·® µ¥ÀÌÅÍ°¡ °¡Àå ¸¹½À´Ï´Ù. Cp = A + BT + CT^2 + DT^3.......................................(1) A~D:»ó¼ö, T=Àý´ë¿Âµµ Á¤È¤µµ¸¦ ´õ ´ÃÀ̱â À§ÇØ 4Â÷, 5Â÷, µîÀ¸·Î Âþ¼ö¸¦ ´ÃÀÏ ¼ö ÀÖ°ÚÀ¸³ª Âþ¼ö¸¦ ´Ã¿©µµ Á¤È®µµ°¡ Å©°Ô ´Ã¾î³ªÁö ¾Ê´Â´Ù¸é °è»ê¸¸ º¹ÀâÇÏÁö À¯¸®ÇÑ Á¡Àº ¾ø½À´Ï´Ù. (3) ºñ¿¿ë·® µ¥ÀÌÅÍ°¡ ¾øÀ» °æ¿ì ÃßÁ¤ÇÏ´Â ¼ö½Ä¿¡´Â ¸î°¡Áö ¸ðµ¨ ¼ö½ÄµéÀÌ ÀÖÁö¸¸ Á¤È®µµ¿¡ ´ëÇÑ ÀÚ·á°¡ ¾ø´Â °æ¿ì À̸¦ »ç¿ëÇϱⰡ ¾î·Æ½À´Ï´Ù. (4) Æò±Õºñ¿ÀÇ °è»ê À§ÀÇ (1)½ÄÀ» ÀÌ¿ëÇؼ T1~T2±¸°£ÀÇ Æò±Õ ºñ¿Àº ´ÙÀ½ ½ÄÀ¸·Î ±¸ÇÕ´Ï´Ù. Cp, mean between T1 and T2 = (ÀûºÐ±¸°£ T1~T2 ¡òCp dT) /(T2-T1).................(2) (5) T1~T2±îÁö °¡¿Çϴµ¥ ¼Ò¿äµÇ´Â ¿·®, Q = (ÀûºÐ±¸°£ T1~T2 ¡òCp dT) .........(3) = A*(T2-T1) + (B/2)(T2^2-T1^2)+ (C/3)(T2^3-T1^3)+ (C/4)(T2^4-T1^4).......(3) (6) ¾ÆÁ÷±îÁö´Â (1)½ÄÀ¸·Î ³ªÅ¸³»´Â ºñ¿¸»°í´Â ³Î¸® ¾Ë·ÁÁø ¼ö½ÄÀÌ °ÅÀÇ ¾ø±â ¶§¹®¿¡ ±× "½É¿ÀÇÑ °ø½Ä" À̶ó´Â °ÍÀÌ ¾Æ¸¶µµ (1)~(3)ÀÇ ½ÄµéÀ» ¾ð±ÞÇÏ´Â °ÍÀ¸·Î º¾´Ï´Ù.
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kimjebul2
08-11-07 04:46
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