23
2020
-
07
ÂÞ´Ä·ç»ú¸ÅÊö¼°Ñ¡ÐÍ?
×÷Õß:
·ç»úÊÇÎÒ¹úÆøÌåѹËõºÍÆøÌåÔËËÍ»úеµÄϰÓóƺô£¬µçÉÈͨ³£°üÀ¨µçÉȺ͹ķç»ú¡£ÆøÌåѹËõºÍÆøÌåÔËËÍ»úеÊǽ«Ðýת»úеת»»³ÉÆøÑ¹ÄܺͶ¯Äܲ¢ÔËËÍÆøÌåµÄ»úе¡£·ç»úµÄÖ÷Òª½á¹¹²¿¼þÊÇÒ¶Âֺͻú¿Ç·ç»ú£¬ËüÃÇÊÇÐÞ½¨½ÚÄܵÄÖ÷Òª²¿¼þ¡£Æ¾Ö¤¹ú¼Ò¿Õµ÷×°±¸ÖÊÁ¿Ä¥Á·ÖÐÐĶàÄêÀ´¾ÙÐеķç»ú²âÊÔ£¬Ðí¶à·ç»úÔڶÌõ¼þϱ£´æÎÊÌ⣬Òò´Ë±ØÐèÆ¾Ö¤²úÆ·±ê×¼¾ÙÐÐÖÆÔì¡£ÈÃÎÒÃǽñÌìѧϰÊìϤÂÞ´Ä·ç»ú¡£
ÂÞ´Ä·ç»úÊÇÈÝ»ýʽµçÉÈ¡£ÔËË͵ĿÕÓîÁ¿ÓëתÊý³ÉÕý±È¡£Ò¶ÂֵĶËÃæÓëµçÉȵÄǰ¶ËºÍºó¶ËÖ®¼äÒÔ¼°µçÉÈÒ¶ÂÖÖ®¼äʼÖÕ±£´æºÜСµÄ¼ä϶¡£ÏòϵķçÓÉͬ²½³ÝÂÖÇý¶¯£¬´ÓµçÉÈÈë¿ÚÑØ¿ÇÌåµÄÄÚ±Úת´ïµ½ÅÅÆø²à¡£µçÉÈÇ»²»ÐèÒªÈó»¬ÓÍ£¬¸ßЧ½ÚÄÜ£¬¾«¶È¸ß£¬ÊÙÃü³¤£¬½á¹¹½ô´Õ£¬Ìå»ýС£¬ÖØÁ¿ÇᣬʹÓÃÀû±ã¡£ÆÕ±éÓÃÓÚʯÓÍ»¯¹¤£¬½¨²Ä£¬µçÁ¦£¬Ò±Á¶£¬»¯·Ê£¬¿óɽ£¬¿Ú°¶£¬·ÄÖ¯£¬Ê³ÎÔìÖ½£¬Ë®²úÑøÖ³£¬ÎÛË®´¦Öóͷ££¬»·±£¹¤ÒµµÈÐí¶àÁìÓò£¬Ö÷ÒªÓÃÓÚÔËËÍ¿ÕÆø£¬µ«Ö÷ÒªÓÃÓÚÔËËÍÆøÌ壬ÇâÆøºÍÒÒȲ
ÂÞ´Ä·ç»úÑ¡ÔñÅÌËã
1.»ìÏýÆøÌåµÄƽ¾ù·Ö×ÓÁ¿£ºm=mi ui=5.524
»ìÏýÆøÌåµÄºãѹĦ¶û±ÈÈÈΪÀå²´=ÏûºÄÕß¼ÛǮָÊý
==30563.6£¨J/komlK£©»ìÏýÆøÌåµÄ¾øÈÈÖ¸ÊýΪRm CpK 1/1¡£
-=ÆäÖÐRm=8314.3£¨ÆøÌå³£Êý£©=1 /£¨1-8314.3/30563.6£©=1.374
2.ÓÉÓÚ½éÖÊÊÇÒ×ȼÒ×±¬ÆøÌ壬½¨ÒéʹÓÃRD-100Kµ¥»úеÃÜ·â¹Ä·ç»ú¡£
3.ÔËËÍ¿ÕÆøÊ±µÄ×ß©Á¿ÈçÏ¡£
qba=Qtha-Qsa=11.59-8.72=2.87£¨m3/min£©
4.µ±ÔËËÍ·Ö×ÓÁ¿ÎªM=5.524µÄÆøÌåʱ£¬×ß©ΪQB=QBA m29=2.875.524 29=6.58£¨m3/min£©¡£
ÆäÖÐ29ÊÇ¿ÕÆøµÄƽ¾ù·Ö×ÓÁ¿£¬mÊÇȼÁÏÆøÌåµÄƽ¾ù·Ö×ÓÁ¿¡£
5.ÏÖʵÁ÷Á¿ÈçÏ¡£
QS=qtha-QB=11.59-6.58=5.01£¨m3/min£©¿ÉÒÔÖª×ãQs=4.75m3/minµÄ¿ÉѡҪÇó¡£
6.ÏÖʵÊÂÇéÌõ¼þϵÄѹÁ¦±È£º1.387 101.325 101.325 39.2 101.325e=101.325 Pd==
7.Ìå»ýЧÂÊΪ43.2£¥¡£ 11.59==5.01=Qth hn Qs
8.ÅÅÆøÎ¶ȣº=[11-1£¨E-1£©]-273»ªÊ϶Èn Td Ts=90
ÆäÖÐkÊÇ»ìÏýÆøÌåµÄ¾øÈÈÖ¸Êý¡£ÇкÏTd?120µÄѡժҪÇó¡£
9¡¢Ñ¡ÐÍЧ¹û£ºRD-100K?µ¥»úеÃÜ·â¹Ä·ç»ú£¬n=1450r/min.?ÏÖʵÐÔÄÜ£ºQS=?5.01m3/min£¬Nsh=9.1KW?
pgµç×ÓÊÇÒ»¼ÒרҵµÄÉú²úÂÞ´Ä·ç»úµÄ³§¼Ò£¬²úÆ·ÖÊÁ¿ºÃ£¬½Ó´ýǰÀ´×ÉѯÏàÖú£¡
×îÐÂ×ÊѶ

Ò³Ãæ°æÈ¨ËùÓУºpgµç×Ó Â³ICP±¸11010603ºÅ-1
ÍøÕ¾½¨É裺ÖÐÆó¶¯Á¦ ¼ÃÄÏ