Тепловая схема энергоблока К-330 ТЭС
Дипломная работа - Физика
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??? F1?/: ?????? k=2300 ??/(?20?)
1?/= Q1 /( k Dt??41)= 24.5*106 /(2.3*10312.28)=867 ?2
???????? ? ?????? ? ???? ?:
1???/=1.1 F1?/= 1.1 1424.882 =954 ?2
? ??? ??? ?????? ??-1100-25-6-1.
???-2:
???? ??? ?????? ????-800-2 ???, ????? ??????? ??? ? ????? ?? ???? ? ???? ????? ???? ??????.
.11.2 ??? ???.
??????? ?? ???? ??????? ????? ???? ?????? ????? ????, ???? ???? ?, ?????? ?? ?? ??????? ???? ?????. ???? ???? ? ?? ????????? ???, ???? ????? ????.
??? ??????? ?? ?????????? ???? ???? ? ??? ?????? ?????? ?. ??? ?? ??????? ???????? ?. ?? ??? ?? ??? ??? ???? ? ???????????? ????? ?????? ???? ?? ?????? ? ? ?????, ?? ?????? ????? (???? ??????), ?? ?????? ?????? ? (???? ??????).
??? ??? ???, ???? ???? ???? ?? ????, ?????? ? ?????? ( ??????? ???????).
??? 2.11
???????D??, ?/cP?, ??P?, ??t?.??, Ct?.???, Ct?, C??? -1287.8630.555.87244.78270271??? -2287.8631.053.9203244.78245.78??? -3287.8631.051.744153.79203204
???-1:
?????? ???? ????? ???? ?? ????:=287.86 ?/?, t ?1= 271 0?; h1=1185.1 ??/?; t2=244.78 0?; h2=1065 ??/?
?????? ?????? ???? k=2.3 ??/(?20?).
????? ?????????? ?? ? ????? ????? ???? ??:
Dt??=(Dt?-Dt?)/[ln(Dt?/Dt?)]=
[(271-244.78)-(271-270)]/ln[(271-244.78)/ (271-270)]=7.72 0?
? ?????? ??? ??? Q= D(h1- h2)= k F?/Dt?? ???? ??? ???, ??????? ????? ?? ???????:
1= D(h1- h2)= 287.86 (1185.1 -1065)=34.57 ????/= Q /( k Dt??)= 34.57 *103/(2.47.72)=1865.8 ?2
? ??? ??? [5] ?????? ??-1800-37-6,5 ? ??????:
?? ?????? ?????? 1870 ?2;
???? ??? ???? ? 287.9 ?/?;
????? ?? ? 34.6 ???;
????? ???????? 300 0?.
???-2: =287.86 ?/?, t ?2= 245.78 0?; h2=1065 ??/?; t3=2030?; h3=865.5 ??/?.
????? ?????????? ?? ? ????? ????? ???? ??:
Dt??2=(Dt?-Dt?)/[ln(Dt?/Dt?)]=
=[( 245.78 -203)-( 245.78 -244.78)]/ln[(245.78 -203)/( 245.78 -244.78)]=11.12 0?
? ?????? ??? ??? Q2= D(h2- h3)= k F?/Dt??2 ???? ??? ???, ??????? ????? ?? ???????:
2= D(h2- h3)= 287.86 (1065 -865.5 )=57.43 ???=2400 ?/= Q2 /( k Dt??2)= 57.43*103 /(2.411.12)=2151 ?2
? ??? ??? [5] ?????? ??-1800-37-4,5 ? ??????:
??-1800-37-4,5 ? ??????:
?? ?????? ?????? 2151 ?2;
???? ??? ???? ? 287.86 ?/?;
????? ?? ? 57.5 ???;
????? ???????? 3000?.
???-3: =287.86 ?/?; t ?3= 204 0?; h3=865.5 ??/?; t?=163.79 0?; h?=692.1 ??/?.
????? ?????????? ?? ? ????? ????? ???? ??:
Dt??3=(Dt?-Dt?)/[ln(Dt?/Dt?)]=
=[( 204-153.79)-(204-203)]/ln[(204-153.79)/( 204-203)]=12.57 0?3= D(h3- h?)= 287.86 (865.5-692.1)=49.9 ????/= Q 3/( k Dt??3)= 49.9*103 /(2.412.57)=1654 ?2
? ??? ??? ?????? ??-1800-37-2,0.
?? ?????? ?????? 1564 ?2;
???? ??? ???? ? 287.86 ?/?;
????? ?? ? 49.9 ???;
????? ???????? 300 0?.