Kev suav txheej txheem ntawm illuminance
Nruab nrab illuminance (Eav)=tag nrho cov luminous flux ntawm lub teeb qhov chaw (N * Ф) * utilization factor (CU) * tu factor (MF)
/ cheeb tsam cheeb tsam (㎡) (tsim rau sab hauv tsev lossis chaw ncaws pob teeb pom kev zoo suav nrog).
Kev siv coefficient: {{0}}.4 rau kev siv sab hauv tsev thiab 0.3 rau kev ua kis las.
Maintenance factor: feem ntau siv {{0}}.7 ~ 0.8.
Piv txwv:
(1) Sab hauv teeb pom kev zoo: 9 teeb ntawm 3 × 36W grille teeb rau chav tsev ntawm 4 × 5 meters.
Nruab nrab illuminance{{0}}tag nrho cov luminous flux ntawm lub teeb qhov chaw × CU × MF / cheeb tsam=(2500 × 3 × 9) × 0.4 × 0.8÷4÷{{ 10}}
Lux
(2) Teeb pom kev hauv chaw ntau pob: 20 × 40m teb, siv POURSPOT
60 teeb ntawm 1000W hlau halide teeb,
Nruab nrab illuminance{{0}}tag nrho cov luminous flux ntawm lub teeb qhov chaw × CU × MF / cheeb tsam=(105000 × 60) × 0.3 × 0.8÷20÷40
=1890
Lux
Cov ntaub ntawv txuas ntxiv:
Illumination tus nqi raws li 0.5, 1, 3, 5, 10, 15, 20, 30, 50, 75, 100, 150,
200, 300, 500, 750, 1000, 1500, 2000, 3000, 5000lx Qib. lx (lux) yog chav tsev ntawm illuminance.
Tus qauv illuminance tus nqi faib yog kom meej meej pom qhov tsawg kawg nkaus hloov ntawm illuminance nyob rau hauv cov nqe lus ntawm subjective nyhuv, thiab qhov sib txawv illuminance yog hais txog 1.5 npaug. Qhov kev faib tawm no yog kwv yees raws li kev faib tawm ntawm CIE International Luminous Lighting Committee tus qauv "Indoor Workplace Lighting" S008/E--2001.
Nyob rau hauv tshav ntuj ncaj qha rau lub caij ntuj sov, lub teeb ci tuaj yeem ncav cuag 60,000-100,000 lx, 10,000-10,000 lx sab nraum zoov yam tsis muaj hnub ci, 100-550 lx nyob rau hauv tsev nyob rau hauv lub caij ntuj sov kaj, thiab 0.2 lx hmo ntuj nyob rau hauv lub hnub puv.
Incandescent teeb tawm txog 12.56 ib watt
lx lub teeb, tab sis tus nqi sib txawv nrog qhov loj ntawm lub teeb. Cov qij me tuaj yeem tso tawm ntau dua lumens, thaum cov qij loj tuaj yeem tawm tsawg dua. Lub luminous efficiency ntawm lub teeb fluorescent yog 3 mus rau 4 npaug ntawm lub teeb incandescent, thiab lub neej ntev yog 9 npaug ntawm cov teeb incandescent, tab sis tus nqi siab dua.
