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1 – mavzu: hfx fanining asosiy tushunchalari mohiyati
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| bet | 32/36 | | Sana | 04.10.2024 | | Hajmi | 392,28 Kb. | | #273464 |
Bog'liq NamDU-ARM-1949-Hayot faoliyati xafsizligi Oktav fil’trlar
F1/F2 =Const F1/F2= 2
Ushbu xolatlar ulchanib jadval tuldiriladi.
Asboblar: lyuksometr, ruletka, sekundomer, eksperiment kismi . Xamma ishlab chikarish xonalarida kunduzi tabiiy yoritish sistemalari ishlashi zarur.
Uch xil tabiiy yoritish sistemalari mavjud:
--- yon tomondan
--- yukoridan
--- aralash
Me’yoriy ulchov bulib yoritish koeffitsienti olinadi va foizlarda ulchanadi. U kuyidagi formula bilan aniklanadi :
E=EA/Ei*100% (1)
EA – bino ichidagi A- nuktaning yoritilganligi; Ei – bino tashkarisidagi yoritilganlik;
E A va Ei- lyuksometr yordamida aniklanadi;
Lyuksometrning elektr sxemasi
Bu erda Ro- obmotkaning karshiligi;
R1- balastning karshiligi
R2, R3, R4 – ulchov oraligidagi karshiliklar
Ulchash natijalari kuyidagi jadvalga kiritiladi
N.Nukta
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Lyuksometrning kursatishi
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Bino ichida
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1
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55 lyuks
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2
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50 lyuks
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3
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60 lyuks
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Kuchada 1
2
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2200 lyuks
900 lyuks
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Urtacha yoritilganlik bino ichida 55 lyuks, kuchada 1520 lyuks ni tashkil kiladi E= Ed/En* 100 =55/(1520*2)*100 =1,77%
YOritish teshiklarining yuzasi kuyidagi formula bilan aniklanadi So= e*h0*Ka*Sn*Kc/T0*R*100 (2)
Bu erda e=en* m*s
eN yoruglik iklimi buyicha tabiiy yoritilganlik koeffitsientining me`yoriy kiymati (laborotoriyalar uchun en =1,77)
M-yoritish iklimi buyicha koefitsent (Toshkent uchun m=0,8) S-kuyoshli kunlar koeffitsienti (Toshkent uchun s= 0,7)
h0 – derazaning yoruglik tasnifi
Ka –karshi binolarning soya kilish koeffitsienti Sn – laboratoriyaning yuzasi, m2
Kc – chang kontsentratsiyalarining extiyot koeffitsienti T0 - yoruglik utkazish koeffitsienti
R –YOn tomonidan yoritishda yoruglikning kaytish koeffitsienti So = (0,84*45*1*42*1,2)/(0,8+0,9+0,8)*1,5*100=5,99m2
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