Effect of wall emissivity on radiation distribution in photocatalytic reactors
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 570
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شناسه ملی سند علمی:
NCFDACCI08_076
تاریخ نمایه سازی: 29 مهر 1396
چکیده مقاله:
In this study, a computational fluid dynamics (CFD) model for the simulation of radiation distribution inside a photoreactor was developed and evaluated experimentally. The evaluation showed that the proposed CFD model successfully predicted the local incident radiation within the reactor.Since the optical properties are wavelength dependent, the range of wavelength from the UV lamp was divided into 4 bands, and optical properties in each of the bands were determined by matching the experimental observations with simulated values. Simulations were then carried on different reactor wall reflectivity and reactor diameter.The performed analysis showed that reflectivity of the reactor wall in the photoreactors with low catalyst loading or small diameter, is an important factor which increases the radiation intensity and consequently the degradation rate
کلیدواژه ها:
نویسندگان
Majede Nourizade
Chemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic)
Mohammad Rahmani
Chemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic)
Aliyar Javadi
Institute of petroleum engineering, Tehran University