VIBRATION EFFECT ON PARTICLE BED AERODYNAMIC BEHAVIOR AND THERMAL PERFORMANCE OF BLACK TEA IN FLUIDIZED BED DRYERS

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SADEGHI M.; KHOSHTAGHAZA M.H.

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Paper Information

Journal: JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST) Year:2012 | Volume:14 | Issue:4 Page(s): 781-788

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Title

VIBRATION EFFECT ON PARTICLE BED AERODYNAMIC BEHAVIOR AND THERMAL PERFORMANCE OF BLACK TEA IN FLUIDIZED BED DRYERS

Author(s)

SADEGHI M. | KHOSHTAGHAZA M.H. | Issue Writer Certificate

Keywords

EVAPORATION RATEQ3

MINIMUM FLUIDIZATIONQ3

SPECIFIC ENERGY CONSUMPTIONQ3

VIBRATION INTENSITYQ3

Abstract

Black tea sample was dried by a vibro-fluidized bed dryer to find its aerodynamic behavior and thermal performance during drying. The drying experiments were conducted at three different inlet air temperatures of 100, 115 and 130oC and fluidization condition at five VIBRATION INTENSITY levels of 0 (no vibration), 0.063, 0.189, 0.395 and 1.184. The results showed that bed channeling and defluidization problems were decreased in vibration condition. The vibration system decreased the requirement of MINIMUM FLUIDIZATION velocity of tea particles and this velocity reduced by increasing the VIBRATION INTENSITY. In the experiments, the maximum EVAPORATION RATE (13×10-3 kgv m-2 s-1) was at the VIBRATION INTENSITY of 1.184 and inlet air temperature of 130oC. Also the minimum SPECIFIC ENERGY CONSUMPTION (4953.785 kJ kgv-1) was observed at 1.184 VIBRATION INTENSITY and 100oC inlet air temperature condition. Based on lower MINIMUM FLUIDIZATION velocity and SPECIFIC ENERGY CONSUMPTION, the VIBRATION INTENSITY of 1.184 and inlet air temperature of 100oC were recommended for drying black tea particles.

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APA: Copy

SADEGHI, M., & KHOSHTAGHAZA, M.H.. (2012). VIBRATION EFFECT ON PARTICLE BED AERODYNAMIC BEHAVIOR AND THERMAL PERFORMANCE OF BLACK TEA IN FLUIDIZED BED DRYERS. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), 14(4), 781-788. SID. https://sid.ir/paper/63066/en

Vancouver: Copy

SADEGHI M., KHOSHTAGHAZA M.H.. VIBRATION EFFECT ON PARTICLE BED AERODYNAMIC BEHAVIOR AND THERMAL PERFORMANCE OF BLACK TEA IN FLUIDIZED BED DRYERS. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST)[Internet]. 2012;14(4):781-788. Available from: https://sid.ir/paper/63066/en

IEEE: Copy

M. SADEGHI, and M.H. KHOSHTAGHAZA, “VIBRATION EFFECT ON PARTICLE BED AERODYNAMIC BEHAVIOR AND THERMAL PERFORMANCE OF BLACK TEA IN FLUIDIZED BED DRYERS,” JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (JAST), vol. 14, no. 4, pp. 781–788, 2012, [Online]. Available: https://sid.ir/paper/63066/en

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