issiqlik almashinish jarayonlari

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/slidelayout4.xml ppt/slidelayouts/slidelayout2.xml ppt/slidemasters/_rels/slidemaster1.xml.rels ppt/slidelayouts/slidelayout11.xml ppt/slidelayouts/slidelayout1.xml ppt/slidelayouts/slidelayout3.xml ppt/notesmasters/notesmaster1.xml ppt/media/image37.jpeg ppt/media/image36.jpeg ppt/media/image40.png ppt/media/image33.jpeg ppt/theme/theme2.xml ppt/theme/theme1.xml ppt/media/image1.jpeg ppt/theme/_rels/theme1.xml.rels ppt/notesmasters/_rels/notesmaster1.xml.rels ppt/media/image43.png ppt/media/image21.png ppt/media/image32.jpeg docprops/thumbnail.jpeg ppt/media/image44.png ppt/media/image46.png ppt/viewprops.xml ppt/presprops.xml ppt/tablestyles.xml ppt/media/media1.mp4 ppt/media/media3.mp4 docprops/core.xml ppt/media/media2.mp4 docprops/app.xml ppt/media/image4.png ppt/media/image23.png ppt/media/image20.png ppt/media/image24.png ppt/media/image22.png ppt/media/image27.png ppt/media/image26.png ppt/media/image19.png ppt/media/image29.png ppt/media/image30.png ppt/media/image25.png ppt/media/image18.png ppt/media/image17.png ppt/media/image7.png ppt/media/image6.png ppt/media/image5.png ppt/media/image2.png ppt/media/image8.png ppt/media/image10.png ppt/media/image11.png ppt/media/image16.png ppt/media/image15.png ppt/media/image14.png ppt/media/image12.png ppt/media/image3.png ppt/media/image13.png ppt/media/image28.png ppt/media/image31.png ppt/media/image34.png ppt/media/image35.png ppt/media/image38.png ppt/media/image39.png ppt/media/image41.png ppt/media/image42.png ppt/media/image45.png ppt/media/image47.png ppt/media/image9.png ppt/slides/slide14.xml ppt/slides/slide19.xml ppt/slides/slide35.xml ppt/slides/slide40.xml ppt/slides/slide45.xml ppt/slides/slide50.xml ppt/slides/slide53.xml ppt/slides/slide54.xml ppt/slides/slide58.xml [content_types].xml _rels/.rels docprops/custom.xml kul rang jismning yutish qobiliyatini 𝐴 1 , absolyut qora ji s mnikini esa 𝐴 2 = 𝐴 1 =1 . kul rang jism temperaturasi absolyut qoranikidan katta, ya`ni 𝑇 1 > 𝑇 2 deb qabul qilamiz.

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bunda, kul rang jismdan nurlanish usulida uzatilgan issiqlik miqdori quyidagicha aniqlanadi: 𝑞 = 𝐸 1 − 𝐸 0 𝐴 1 (22) ikkala jismning temperaturasi tenglashganda, issiqlik muvozanat holati yuzaga keladi va q = 0 bo`ladi. demak : 𝐸 1 − 𝐸 0 𝐴 1 =0 (23) bundan 𝐸 1 𝐴 = 𝐸 0 (24) ushbu xulosani umumlashtirib, bir nechta parallel joylashtirilgan jismlar uchun ushbu ifodani keltirib chiqaramiz: 𝐸 1 𝐴 1 = 𝐸 2 𝐸 1 =… 𝐸 𝑛 𝐴 𝑛 = 𝐸 0 𝐴 0 = 𝑓 𝑇 (25) ( 25) tenglama kirxgof qonunini xarakterlaydi. ushbu tenglamaga binoan, ma`lum biror temperatura uchun istalgan bir jismning nur tarqatish qobiliyati, uning nur yutish qobiliyatiga bo`lgan nisbati o`zgarmas miqdor bo`lib, absolyut qora jismning nur tarqatish qobiliyatiga tengdir. issiqlik almashinish qurilmalari ma’lumki , sanoatning turli sohalarida xilma-xil xom ashyo va mahsulotlarni qayta ishlashda issiqlik almashinish jarayonlari va ularni amalga oshiruvchi qurilmalar juda keng …

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gan va ko‘p ishlatiladigan turidir. stefan - bol’tsman qonunini absolyut qora bo`lmagan jismlar uchun ham qo`llash mumkin. masalan, kul rang jismlar uchun quyidagi ko`rinishga ega: 𝐸 = 𝜀 ∙ 𝐶 0 𝑇 100 4 (21) bu erda 𝜀 = 𝐶 𝐶 0 - kul rang jismning qoralik darajasi yoki uning nur chiqarish koeffitsienti; 𝐶 0 - kul rang jismning nur chiqarish koeffitsienti. kul rang jismning nur chiqarish koeffitsienti har doim 1 dan kichik bo`lib, 0,055...0,95 oraliqda o`zgaradi. kirxgof qonuni kul rang jismlarning nur tarqatish va uni yutish qobiliyatlari o`rtasidagi bog’liqlikni ifodalaydi. bir - biriga parallel joylashgan, kul rang i va absolyut qora ii jismlarni ko`rib chiqamiz (4-rasm). absolyut qora jismning nur tarqatish qobiliyati va temperaturasi orasidagi bog’liqlik ushbu formuladan topiladi: 𝐸 0 = 𝐾 0 𝑇 4 𝑦𝑜𝑘𝑖 𝐸 0 = 𝐶 0 𝑇 100 4 (20) bu y erda 𝐾 0 = 4,19…5,67 ∙ 10 −8 𝑉𝑡 𝑚 2 …

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