Åç¹Ü×÷¿ÉÄæÅòÕÍÖÁѹÁ¦Îª
p3?6MPa¡£Éè»·¾³Î¶ÈΪT0?300K£¬Á÷Á¿qm?32kg/sÎÊ£º
£¨1£©¸ÃÅç¹ÜΪºÎÐÎ×´£»
£¨2£©Åç¹Ü³ö¿ÚÁ÷ËÙ¼°½ØÃæ»ýΪ¶àÉÙ£»
£¨3£©Òò½ÚÁ÷ÒýÆðµÄìØ²ú¼°ÓÐЧÄÜËðʧΪ¶àÉÙ£¿
µÚ¾ÅÕ ÕôÆû¶¯Á¦Ñ»·
1.ÕôÆû¶¯Á¦Ñ»·µÄÖ÷ÒªÉ豸ÊÇʲô£¿¸÷Æðʲô×÷Óã¿ 2.Ìá¸ßÕôÆû¶¯Á¦Ñ»·ÈÈЧÂʵÄÖ÷Òª´ëÊ©Óë·½·¨ÓÐÄÇЩ£¿
3.ÔÚÕôÆûѹËõÖÆÀäÑ»·ÖУ¬Èç¹ûÓÃÅòÕÍ´úÌæ½ÚÁ÷·§£¬ÓкÎÓÅȱµã£¿ 4.ÊÔ»³öÕôÆûÔÙÑ»·µÄT?sͼ¡£
±³Ñ¹Îªp2?0.004MPa¡£ÊÔÇóÑ»·ÎüÈÈ¡¢p1?4MPa,t1?5000C£¬
5.ijÀÊ¿ÏÑ»·£¬Ë®ÕôÆø³õ²ÎÊýΪ
·ÅÈÈÁ¿¡¢ÆûÂÖ»ú×ö¹¦ºÍÑ»·ÈÈЧÂÊ¡£ 6.ijÕôÆû¶¯Á¦Ñ»·£¬Ë®ÕôÆøµÄ³õ²ÎÊýΪ»úÏà¶ÔÄÚЧÂÊ?Tp1?4.5MPa,t1?5300C£¬±³Ñ¹Îªp2?0.005MPa£¬ÆûÂÖ
?0.88£¬ÊÔÇóÑ»·ÎüÈÈÁ¿¡¢·ÅÈÈÁ¿¡¢ÆûÂÖ»ú×ö¹¦Á¿ºÍÑ»·ÈÈЧÂÊ¡£
07.ijÕôÆûѹËõÖÆÀäÑ»·£¬ÖÆÀä¼ÁΪ·úÀï°º134a£¬Õô·¢Æ÷µÄ³ö¿ÚζÈΪ?26.45C£¬ÀäÄýÆ÷µÄ³ö¿ÚζÈ
300C¡£ÊÔÇó£º
£¨1£©Ñ»·ÖÆÀäÁ¿ºÍÑ¹Æø»úºÄ¹¦Á¿£» £¨2£©ÖÆÀäϵÊý£» £¨3£©Ñ»·ÈÈЧÂÊ¡£
8.ijÕôÆû¶¯Á¦Ñ»·×°ÖÃΪÀÉ¿ÏÑ»·¡£ÕôÆûµÄ³õѹΪ
p1?4.0MPa£¬±³Ñ¹Îªp2?0.005MPa£¬Èô³õÎÂ
·Ö±ðΪ300¡æºÍ500¡æ£¬ÊÔÇóÕôÆûÔÚ²»Í¬³õÎÂϵÄÑ»·ÈÈЧÂÊ?t¼°ÕôÆûµÄÖÕ̬¸É¶Èx2¡£ ½â£º£¨1£©.ÓÉ ÓÉ
p1?4.0MPa£¬t1?300¡æ£¬²é¹ýÈÈÕôÆû±íµÃ h1?2959.5kJ/kg,s1?6.3595kJ/(kg.K)
p2?0.005MPa£¬²é±¥ºÍË®ºÍ±¥ºÍÕôÆû±íµÃ
??h2?137.72kJ/kg,h2?2560.55kJ/kg
??s2?0.4761kJ/(kg.K),s2?8.3930kJ/(kg.K)
ÓÉs2?s1µÃ
x2?0.743,h2?1937kJ/kg
ÓÖ ºöÂԱù¦
?h3?h2?137.22kJ/kg
h4?h3
qH?h1?h4?2595.5?137.72?2457.8(kJ/kg)
qL?h2?h3?1937.9?137.72?1800.2(kJ/kg)q1800.2?t?1?L?1??26.8%qH2457.2£¨2£©.¹ý³ÌºÍÉÏÒ»ÎÊÏàͬ£¬×îºó½á¹ûÊÇ
?t?39%£¬x2?0.832
?500¡æ£¬±³Ñ¹Îªp2?0.005MPa£¬ÊÔÇóµ±³õѹ·Ö±ðΪ4.0MPaºÍ
9.ijÀÊ¿ÏÑ»·£¬Ë®ÕôÆø³õÎÂΪt16.0MPa ´ð°¸
ʱµÄÑ»·ÈÈЧÂʼ°ÅÅÆû¸É¶È¡£
t1?500¡æ p1?4.0MPa p1?6.0MPa p2?0.005MPa ?t x2 39% 0.832 39.5% 0.808 10.ijÕôÆû¶¯Á¦³§°´³ö¿ÚÕôÆû²ÎÊýΪ
ÔÙÈÈÑ»·¹¤×÷£¬¹øÂ¯
p1?10MPa,t1?500¡æ£¬ÆûÂÖ»úÅÅÆûѹÁ¦p2?0.004MPa¡£ÕôÆûÔÚ½øÈëÆûÂÖ»úÅòÕÍÖÁ1.0MPaʱ£¬±»Òý³öµ½¹øÂ¯ÔÙÈÈÆ÷ÖÐÔÙÈÈÖÁ500¡æ£¬È»ºóÓֻص½ÆûÂÖ»ú¼ÌÐøÅòÕÍÖÁÅÅÆûѹÁ¦¡£ÉèÆûÂÖ»úºÍË®±ÃÖеĹý³Ì¶¼ÊÇÀíÏëµÄ¶¨ìعý³Ì£¬ÊÔÇó£º £¨1£©.ÓÉÓÚÔÙÈÈ£¬Ê¹·¦Æû¸É¶ÈÌá¸ß¶àÉÙ£¿ £¨2£©.ÓÉÓÚÔÙÈÈ£¬Ñ»·µÄÈÈЧÂÊÌá¸ßÁ˶àÉÙ£¿ ½â£º £¨1£©.ÓÉ
p1?10MPa,t1?500²éµÃ
h1?3372.8kJ/kg,s1?6.5954kJ/(kg.K)
ÓÉ
pa?1.0MPa,sa?s1?6.5954kJ/(kg.K)²éµÃ
ha?2807.0kJkg
ÓÉ
pb?1.0MPa,tb?500¡æ²éµÃ
hb?3479.8kJkg,sb?7.7597kJ(kg?K)
ÓÉ
p2?0.004MPa,s2?sb?7.7597kJ(kg?K)
h2?2337.0kJkg,x2?0.911
ÇÒ ÓÉ
??121.3kJkg h2p2?0.004MPa,sa?s1?6.5954kJ(kg?K)²éµÃ
h2a?1986.8,x2a?0.767
ºöÂԱù¦
??121.3kJkg h4?h3?h2x2?x2a0.911?0.767??19%
x2a0.767£¨2£©ºöÂԱù¦
w0?wT??h1?ha???hb?h2?
kg)
=
?3372.8?2807???3476.8?2337.0??1706(kJqH??h1?h4???hb?h2?
=
?3372.8?121.3???3476.8?2807??3921.3(kJkg)
?t,R?w01706??43.5% qH3921.3ÎÞÔÙÈÈʱ
w0?h1?h2a?3372.8?1986.8?1386(kJkg) qH?h1?h4?3372.8?121.3?3252(kJkg)
?t?w01386??42.6% qH3252?t,R??t43.5%?42.6%??2.1%
?t42.6%µÚÊ®ÕÂ ÖÆÀäÑ»·
1.ijÕôÆøÑ¹ËõÖÆÀä×°ÖÃÈçͼ5-26Ëùʾ¡£ÖÆÀä¼ÁΪ°±£¬Õô·¢Æ÷³ö¿Ú°±µÄζÈΪ t1??15?C£¬ÔÚÀäÄýÆ÷ÖÐ
ÀäÄýºóµÄ°±Îª±¥ºÍÒº£¬Î¶Èt1?25?C¡£ÊÔÇó£º
Õô·¢Æ÷Öа±µÄѹÁ¦ºÍÀäÄýÆ÷Öа±µÄѹÁ¦£» Ñ»·µÄÖÆÀäÁ¿qL£¬Ñ»·¾»¹¦w0ºÍÖÆÀäϵÊý?£» Èô¸Ã×°ÖõÄÖÆÀäÄÜÁ¦Îª?L?42?104kJh£¬°±µÄÁ÷Á¿Îª¶à´ó£¿
½â £¨1£©T-sͼ²ÎÔÄͼ5-26£¨b£© ÓÉ
t1??15?C£¬²é°±µÄ
p1?0.25MPa,h1?h1???1570kJkg ÓÉt1?25?C£¬²élgp?hͼµÃ
p2?1.01MPa,h3?h?2?450kJkg ÓÉs2?s1,p2?1.01MPa,²éµÃ
h2?1800kJkg
h4?h3?450kJkg
£¨2£©
qL?h1?h4?1570?450?1120(kJkg)
w0?wc?h2?h1?1800?1570?230(kJkg)
??qLw?1120?4.86 0230lgp?hͼµÃ
£¨3£©
?L?qmqL
?L42?104qm???375(kgh)
qL11202£®¶¬ÌìÊÒÄÚȡůÀûÓÃÈȱ᣽«·úÀï°º134aÕôÆøÑ¹ËõÊ½ÖÆÀä»ú¸ÄΪÈȱ㬴ËʱÕô·¢Æ÷·ÅÔÚÊÒÍ⣬ÀäÄýÆ÷·ÅÔÚÊÒÄÚ¡£ÖÆÀä»ú¹¤×÷ʱ¿É´ÓÊÒÍâ´óÆø»·¾³ÎüÊÕÈÈÁ¿qL£¬·úÀï°º134aÕôÆø¾Ñ¹ËõºóÔÚÀäÄýÆ÷ÖÐÄý½áΪҺÌå·Å³öÈÈÁ¿qH,¹©ÊÒÄÚ¹©Å¯¡£ÉèÕô·¢Æ÷ÖзúÀï°º134aµÄζÈΪ-10¡æ£¬ÀäÄýÆ÷ÖзúÀï°º134aÕôÆøµÄζÈΪ30¡æ£¬ÊÔÇó£º ÈȱõĹ©ÈÈϵÊý£»
ÊÒÄÚ¹©ÈÈ100 000kJ/hʱ£¬ÓÃÒÔ´ø¶¯ÈȱÃËùÐèµÄÀíÂÛ¹¦ÂÊ£» µ±Óõç¯ֱ½Ó¹©¸øÊÒÄÚÏàͬµÄÈÈÁ¿Ê±£¬µç¯µÄ¹¦ÂÊΪ¶àÉÙ£¿ ´ð°¸ £¨1£©??
µÚ¶þƪ ´«ÈÈѧ
µÚ¶þÕ µ¼ÈÈ»ù±¾ÔÀí¼°ÎÈ̬µ¼ÈÈ
?8.58 £»£¨2£©P?3.23kW£»£¨3£©Pe?27.8kW
1.Á½¿é²»Í¬²ÄÁÏµÄÆ½°å×é³ÉÈçͼ4-63ËùʼµÄ´óƽ°å¡£Á½°åµÄÃæ»ý·Ö±ðΪA1¡¢A2£¬µ¼ÈÈϵÊý·Ö±ðΪ?1ºÍ?2¡£Èç¹û¸Ã´óƽ°åµÄÁ½±íÃæ»ý·Ö±ðά³ÖÔÚ¾ùÔÈζÈt1¼°t2£¬ÊÔ µ¼³öͨ¹ý¸Ã´óƽ°åµÄµ¼ÈÈÈÈÁ¿¼ÆËãʽ¡£
1£¨´ð°¸ ?1?(t1?tt)[???] £©
?1A1?2A2
Ïà¹ØÍÆ¼ö£º