turbinaning effektiv f.i.k.lari

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1.49 – masala. agar turbina oldidagi bug’ parametrlari p0 = 3,4 mpa, t0 = 440 °с , turbinadan keyin esa p2 = 0,4 mpa, t2 = 220 °с va turbinaning mexanik f.i.k.i ηm = 0,98 ga teng bo’lsa turbinaning ichki nisbiy va effektiv f.i.k.larini aniqlang. javob: ηni = 0,77; ηne = 0,755. 1.50 – masala. agar turbina oldidagi bug’ parametrlari p0 = 4,0 mpa, t0 = 390 °с , turbinadan keyin esa p2 = 1,0 mpa, t2 = 240 °с , turbinaning mexanik f.i.k.i ηm = 0,97 ga va elektrogenerator f.i.k. ηg = 0,95 ga teng bo’lsa turbogeneratorning nisbiy elektrik f.i.k.ini aniqlang. javob: ηn.el = 0,71. 1.51 – masala. turbinani sinovi paytida uning oldidagi bug’ parametrlari p0 = 3,5 mpa, t0 = 500 °с , turbinadan keyin esa p2 = 1,2 mpa, t2 = 290 °с ga tengligi o’lchandi. agar turbina bir xil ichki nisbiy f.i.k.i p ni = 0,73 …

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lsa turbinaning effektiv quvvatini aniqlang. javob: ne = 4560 kvt. 1.55 – masala. ishlatilayotgan turbinada boshlang’ich bug’ bosimi p0 = 8,0 mpa, t0 = 480 °с va kondensatoridagi bug’ bosimi pk = 3,510 3 pa. agar turbina orqali bug’ sarfi d = 5,4 kg/s va turbinaning nisbiy effektiv f.i.k.i ηn.e = 0,73 va turbinaning mexanik f.i.k.i ηm = 0,97 ga teng bo’lsa turbinaning effektiv quvvatini va mexanik isroflarga sarflanadigan quvvatini aniqlang. javob: ne = 4560 kvt; nm = 166 kvt. 1.56 – masala. ishlatilayotgan turbinada boshlang’ich bug’ bosimi p0 = 3,5 mpa, t0 = 435 °с va kondensatoridagi bug’ bosimi pk = 4,010 3 pa. agar turbina orqali bug’ sarfi d = 5,0 kg/s va turbinaning nisbiy effektiv f.i.k.i ηn.e = 0,72 ga teng bo’lsa turbinaning effektiv quvvatini va bug’ning solishtirma effektiv sarfini aniqlang. yechish: is – diagrammadan foydalanib ko’zda tutilgan h0 = i0 – ik.a. issiqlik tushishini quramiz (1.12 …

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nsatoridagi bug’ bosimi pk = 4,510 3 pa, turbinaning nisbiy effektiv f.i.k.ining qiymati ηn.e = 0,68 ni tashkil qiladi. agar turbina kondensatoridagi bug’ bosimi p’k = 8,010 3 pa gacha ko’tarilsa va turbinaning nisbiy effektiv f.i.k.ining qiymati η’n.e = 0,63 gacha pasaysa bug’ning solishtirma effektiv sarfi qiymati qanchaga ortishini hisoblang. i0 = 3315 ia.k = 2095 i, kj/kg s, kj/(kg.k) t0 = 435 os javob: de = 0,74 kg/(kvtsoat). 1.59 – masala. effektiv quvvati ne = 12000 kvt bo’lgan kondensatsion turbinada boshlang’ich parametrlari p0 = 2,8 mpa, t0 = 400 °с o’ta qizigan bug’da ishlaydi, turbina kondensatoridagi bug’ bosimi pk = 4,510 3 pa. agar turbina orqali bug’ sarfi d = 15,0 kg/s bo’lsa bug’ning solishtirma effektiv sarfi va turbinaning nisbiy effektiv f.i.k.ini aniqlang. javob: de = 4,5 kg/(kvtsoat); ηn.e = 0,708. 1.60 – masala. kondensatsion turbinada bug’ning boshlang’ich parametrlari p0 = 3,5 mpa, t0 = 435 °с , turbina …

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pamiz (1.13 – rasm): i0 = 3315 kj/kg. bug’ning p0 va t0 parametrlardan pb bosimgacha, pb va tb parametrlardan pk bosimgacha adiabatik kengayish jarayoniga asosan qurilgan is – diagrammadan (1.13 – rasm) ia.k. = 2640 kj/kg va ik.a. = 2240 kj/kg entalpiyalarni aniqlaymiz. otborga kirayotgan bug’ning entalpiyasini (1.42) formuladan aniqlaymiz:     .281574,0264033153315' .00 kgkjiiii oikab   kondensatordagi bug’ entalpiyasini (1.43) formuladan aniqlaymiz:     .237876,0224028152815'' .. kgkjiiii oiakbbk   turbina orqali bug’ sarfi (1.41) formulaga ko’ra:             .87,6 23783315 237828155 96,098,023783315 4000 00 skg ii iid ii n d k kbb gmk el             1.62 – masala. ishlab chiqarish uchun rostlanuvchi bug’ otboriga ega turbinada bug’ning boshlang’ich parametrlari p0 = 3,5 mpa, t0 = 435 °с , turbina kondensatoridagi bug’ bosimi …

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ti aniqlansin. yechish: is – diagrammadan foydalanib bug’ning p0 va t0 boshlang’ich parametrlariga ko’ra i0 entalpiyani topamiz (1.14 – rasm): i0 = 3110 kj/kg. bug’ning adiabatik kengayish jarayoniga asosan ia.k. = 2645 kj/kg va ik.a. = 2095 kj/kg entalpiyalarni aniqlaymiz. 1.13 – rasm. 1.14 – rasm. otborga kirayotgan bug’ning entalpiyasini (1.42) formuladan aniqlaymiz:     .276175,0264531103110' .00 kgkjiiii oikab   kondensatordagi bug’ entalpiyasini (1.43) formuladan aniqlaymiz:     .224877,0209527612761'' .. kgkjiiii oiakbbk   turbinaning elektrik quvvatini (1.41) formuladan keltirib chiqariladi:           .455397,097,02248276142248311080 skgiidiidn gmkbbkel   1.64 – masala. ishlab chiqarish uchun rostlanuvchi bug’ otboriga ega turbinada bug’ning boshlang’ich parametrlari p0 = 3,5 mpa, t0 = 350 °с , turbina kondensatoridagi bug’ bosimi pk = 5,010 3 pa, rostlanuvchi bug’ otboridagi bug’ sarfi db = 5,0 kg/s, bosimi pb = 0,4 mpa. agar turbina orqali …

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1.49 – masala. agar turbina oldidagi bug’ parametrlari p0 = 3,4 mpa, t0 = 440 °с , turbinadan keyin esa p2 = 0,4 mpa, t2 = 220 °с va turbinaning mexanik f.i.k.i ηm = 0,98 ga teng bo’lsa turbinaning ichki nisbiy va effektiv f.i.k.larini aniqlang. javob: ηni = 0,77; ηne = 0,755. 1.50 – masala. agar turbina oldidagi bug’ parametrlari p0 = 4,0 mpa, t0 = 390 °с , turbinadan keyin esa p2 = 1,0 mpa, t2 = 240 °с , turbinaning mexanik f.i.k.i ηm = 0,97 ga va elektrogenerator f.i.k. ηg = 0,95 ga teng bo’lsa turbogeneratorning nisbiy elektrik f.i.k.ini aniqlang. javob: ηn.el = 0,71. 1.51 – masala. turbinani sinovi paytida uning oldidagi bug’ parametrlari p0 = 3,5 mpa, …

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