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: 07-11-06 17:14
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300A PVC ÆÄÀÌÇÁÀÇ ¸¶Âû°è¼ö¸¦ ¾Ë°íÀÚ ÇÕ´Ï´Ù.
´õºÒ¾î 300A Elbow, TeeÀÇ ¸¶Âû°è¼ö¸¦ ¾Ë°íÀÚ ÇÕ´Ï´Ù.
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Stefano
07-11-06 19:39
(1) Rigid PVC PipeÀÇ °æ¿ì ¾Æ·¡ÀÇ Average Roughness Factor (¥å)°ªÀ» ÀÌ¿ëÇÏ¿© Colebrook EquationÀ» ÀÌ¿ëÇÏ¸é °è»êÀ¸·Î ±¸ÇÒ ¼ö ÀÖ½À´Ï´Ù.
Steel tube 0.0460 mm
Copper tubing 0.0015 mm
Glass tubing 0.0001 mm
Polythene 0.0010 mm
Flexible P.V.C. 0.2000 mm
Rigid P.V.C. 0.0050 mm
Cast iron tube 0.2600 mm
Concrete tube 2.0000 mm
(2) Frictioin Factor¸¦ ±¸ÇÏ·Á¸é
°üÀÇ ³»°æ, À¯Ã¼ÀÇ ¹°¼º°ú À¯·®À» ¾Ë°í----Reynolds No.¸¦ ±¸ÇÑ´ÙÀ½
Roughness Factor(¥å), ¸¦ Parameter·Î ÇÏ¿© Friction Factor¸¦ ±¸ÇÒ ¼ö ÀÖ½À´Ï´Ù.
(3) ¿¢¼¿À» ÀÌ¿ëÇÏ¿© ±¸ÇÏ´Â ¹æ¹ýÀº º» °Ô½ÃÆÇ¿¡µµ ¼³¸íµÇ¾î ÀÖ½À´Ï´Ù.
ã±â µµ±¸¸¦ ÀÌ¿ëÇؼ °Ô½ÃÆÇ ±Û Á¦¸ñ "fanningÀÇ friction factor °ªÃ£±â"¸¦ ã¾Æº¸¼¼¿ä.
(1) Rigid PVC PipeÀÇ °æ¿ì ¾Æ·¡ÀÇ Average Roughness Factor (¥å)°ªÀ» ÀÌ¿ëÇÏ¿© Colebrook EquationÀ» ÀÌ¿ëÇÏ¸é °è»êÀ¸·Î ±¸ÇÒ ¼ö ÀÖ½À´Ï´Ù. Steel tube 0.0460 mm Copper tubing 0.0015 mm Glass tubing 0.0001 mm Polythene 0.0010 mm Flexible P.V.C. 0.2000 mm Rigid P.V.C. 0.0050 mm Cast iron tube 0.2600 mm Concrete tube 2.0000 mm (2) Frictioin Factor¸¦ ±¸ÇÏ·Á¸é °üÀÇ ³»°æ, À¯Ã¼ÀÇ ¹°¼º°ú À¯·®À» ¾Ë°í----Reynolds No.¸¦ ±¸ÇÑ´ÙÀ½ Roughness Factor(¥å), ¸¦ Parameter·Î ÇÏ¿© Friction Factor¸¦ ±¸ÇÒ ¼ö ÀÖ½À´Ï´Ù. (3) ¿¢¼¿À» ÀÌ¿ëÇÏ¿© ±¸ÇÏ´Â ¹æ¹ýÀº º» °Ô½ÃÆÇ¿¡µµ ¼³¸íµÇ¾î ÀÖ½À´Ï´Ù. ã±â µµ±¸¸¦ ÀÌ¿ëÇؼ °Ô½ÃÆÇ ±Û Á¦¸ñ "fanningÀÇ friction factor °ªÃ£±â"¸¦ ã¾Æº¸¼¼¿ä.
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