Influence of Operating Parameters on Physicochemical Properties of Fruit Juice Powders Produced by Spray Drying

2014 ◽  
Vol 941-944 ◽  
pp. 1196-1200
Author(s):  
Li Li Zhang ◽  
Chuan Chuan Ma
Keyword(s):  
Moisture Content ◽  
Physicochemical Properties ◽  
Bulk Density ◽  
Air Temperature ◽  
Flow Rate ◽  
Fruit Juice ◽  
Air Flow ◽  
Compressed Air ◽  
Operating Parameters ◽  
Air Flow Rate

This paper investigated the influence of operating parameters such as inlet air temperature, compressed air flow rate, concentration of carrier agent and type of carrier on the physicochemical properties of fruit juice powders produced by spray drying.The results indicated that increasing inlet air temperature resulted in the larger size particles with smoothly spherical appearance, and to lower bulk density and moisture content. The bulk density of powders also decreased with increasing carrier agent concentration, decreasing compressed air flow rate. The higher feed flow rate negatively affected process yield and positively influenced moisture content, and occurring the wall deposition easily. Additionally, the anthocyanin retention mainly depends on the inlet air temperature and type of carrier. Moreover, the novel methods and ideas to this problem in the next studies were presented.

Optimization of Drying Kinetics and Quality Parameters of Broccoli Florets

2011 ◽  
Vol 7 (2) ◽  
Author(s):  
Andrea V Mahn ◽  
Paola Antoine ◽  
Alejandro Reyes
Keyword(s):  
Antioxidant Activity ◽  
Air Temperature ◽  
Flow Rate ◽  
Air Flow ◽  
Radical Scavenging ◽  
Particle Diameter ◽  
Drying Kinetics ◽  
Convective Drying ◽  
Air Flow Rate ◽  
Drying Time

Drying kinetics of broccoli florets in a tunnel dryer was studied. Effective moisture diffusivity (Deff) and activation energy for moisture diffusion (E0) were estimated. The effect of air temperature, air flow rate and particle size on antioxidant capacity, greenness and texture were calculated through a 23 factorial design. Air flow rate and temperature significantly affected drying time. Deff fluctuated between 2.82 x 10-10 and 2.00 x 10-9 (m2/s), and E0 was around 42 KJ/mol, agreeing with values reported in literature. The maximum antioxidant activity was obtained at 60°C, air flow rate of 4 m/s and 1.5 cm particle diameter, resulting in a 70 percent reduction in free radical scavenging ability and a 29 percent increase in total reductive capability. Air temperature had significant effect on greenness, and air flow rate significantly affected texture. The optimization of convective drying of broccoli allows maximizing antioxidant activity and minimizing cost by saving energy and time.

Investigation of a Gas-Solid Fluidized Bed for Lump Coal Separation

2013 ◽  
Vol 868 ◽  
pp. 433-436
Author(s):  
Xiao Nan Zhao ◽  
Lu Bin Wei ◽  
Yu Fu ◽  
Mo Han Zhang ◽  
Yi Yao Wang
Keyword(s):  
Fluidized Bed ◽  
Flow Rate ◽  
Air Flow ◽  
Operating Parameters ◽  
Air Flow Rate ◽  
Separation Effect ◽  
Separation Time ◽  
Bed Height ◽  
Lump Coal

The influences of operating parameters (bed height, air flow rate, and separation time) on the separation effect for lump coal were experimentally studied. The results show that shallow bed takes less time to reach steady separation state comparing with the deep bed. Increasing separation time at low air flow rate and decreasing separation time at high air flow rate could improve the separation effect. Separation effect could get the optimal under the condensation of bed height at 90mm, air flow rate at 8m3/h and separation time at 60s.

Effects of air temperature and air flow rate control on the tipburn occurrence of leaf lettuce in a closed-type plant factory system

2013 ◽  
Vol 54 (4) ◽  
pp. 303-310 ◽  
Author(s):  
Jun Gu Lee ◽  
Chang Sun Choi ◽  
Yoon Ah Jang ◽  
Suk Woo Jang ◽  
Sang Gyu Lee ◽  
...  
Keyword(s):  
Air Temperature ◽  
Flow Rate ◽  
Rate Control ◽  
Air Flow ◽  
Air Flow Rate ◽  
Closed Type ◽  
Plant Factory ◽  
Flow Rate Control ◽  
Leaf Lettuce

Effect of Process Parameters on Characteristics of Spray-Dried Hydroxyapatite Granules

2017 ◽  
Vol 728 ◽  
pp. 341-346 ◽  
Author(s):  
Weeranuch Sukaraseranee ◽  
Sukasem Watcharamaisakul ◽  
Boris Golman ◽  
Jintamai Suwanprateeb
Keyword(s):  
Size Distribution ◽  
Air Temperature ◽  
Flow Rate ◽  
Feed Rate ◽  
Air Flow ◽  
Spherical Shape ◽  
Air Flow Rate ◽  
Uniform Size ◽  
Drying Conditions ◽  
Spray Dried

The effects of drying air temperature and flow rate, spraying air flow rate and slurry feed rate were investigated on the morphology, size distribution, density and flowability of spray-dried hydroxyapatite granules. The granules were of good spherical shape and smooth surface, but low flowability. The granules of uniform size distribution were obtained at high spraying air flow rate and granules of small sizes were collected at high spraying and drying air flow rates, high slurry feed rate and low drying air temperature. Thus, by adjusting the spray drying conditions we can control the granule properties.

Experimental Study of Solar Air Heating System Based on Unglazed Transpired Collector

2011 ◽  
Author(s):  
Lixin Gao ◽  
Hua Bai ◽  
Xiumu Fang
Keyword(s):  
Surface Temperature ◽  
Air Temperature ◽  
Flow Rate ◽  
Temperature Rise ◽  
Air Flow ◽  
Heating System ◽  
Airflow Rate ◽  
Air Flow Rate ◽  
Air Heating ◽  
Collector Efficiency

An experimental rig was set up to test the thermal performance of a solar air heating system based on an unglazed transpired collector of 2.5 m2. The experiment was carried out at Harbin Institute of Technology in the city of Harbin, which is located in northeastern China, at latitude 45°41′ N and longitude 126°37′ E. The tests were spread over a number of days, in which the 4-day experimental data within the period were selected as the sample for analysis. Experimental results show that solar collector’s surface temperature and exit air temperature increase with increasing solar irradiation. The influence of ambient temperature on surface temperature and exit temperature is negligible. Temperature rise decreases with increasing air flow rate, while collector efficiency increases with increasing air flow rate. For an air flow rate of 100 m3/h in Test 1, the average air temperature rise and collector efficiency were 28.86°C and 72% respectively; for an air flow rate of 235 m3/h in Test 2, the average air temperature rise and collector efficiency were 11.52°C and 78% respectively. Higher airflow rate tends to operate the collector at lower surface temperature, which results in lower overall heat losses from the collector to the surroundings, therefore increasing airflow rate reduces air temperature rise and enhances the collector efficiency. The average efficiency of the experimental solar air heating system in the 4-day experiment period was 72%, 78%, 61%, and 72% respectively, which are higher than most conventional glazed flat-plate solar air collectors. With better coordination with architectural design at early stage in a project, this building-integrated solar air heating system can be both aesthetically and technically viable.

Effects of Impeller Speed, Atomising Air Flow Rate and Fluidising Temperature in Agitated Fluidised Bed Granulation of Cocoa-Milk Powders

2005 ◽  
Vol 1 (3) ◽  
Author(s):  
Mohd Shamsul Anuar ◽  
Siti Masrinda Tasirin
Keyword(s):  
Moisture Content ◽  
Flow Rate ◽  
Air Flow ◽  
Impeller Speed ◽  
Fluidised Bed ◽  
Air Flow Rate ◽  
Operational Parameters ◽  
Operational Variables ◽  
Fluid Bed ◽  
Fluid Bed Granulation

Mechanically agitated fluid bed granulators with inserted impeller are currently favoured by the industry due to better particle mixing, heat transfer and effective particle growth. However, effects of operational variables such as impeller speed, atomising air flow rate and fluidising temperature on the physical characteristics of the generated granules are still not fully quantified. Scaling-up of industrial fluid bed granulation processes especially in the pharmaceutical industry are done empirically. In this paper, a study is described on the effects of impeller speed, atomising air flow rate and fluidising temperature on the flowability, moisture content, mean particle size and size distribution of the granulated cocoa-milk drink powder in an agitated fluid bed granulation process. Findings showed that when all the values of the three investigated operational parameters were increased, granules with better flowability characteristics, lower moisture content, smaller and more uniformed granules were obtained in the range tested.

scholarly journals Effect of Cigarette Packaging Sealing on Cigarette Moisture Content

2018 ◽  
Vol 53 ◽  
pp. 01023
Author(s):  
Jianbo Zhan ◽  
Han Zheng ◽  
Hao Wang ◽  
Jun Jiao ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Moisture Content ◽  
Flow Rate ◽  
Air Flow ◽  
Storage Period ◽  
Air Flow Rate ◽  
Cigarette Tobacco ◽  
Temperature And Humidity ◽  
Improvement Measures ◽  
And Storage ◽  
Humidity Environment

The moisture content of cigarette tobacco directly affects the smoking quality and storage period of cigarettes. The influence of the sealing property of cigarette packets on the moisture of the cigarette was studied, and a solution to improve the sealing property of the small package was provided. At the same time, the standard boundary for judging the packaging tightness of cigarette packets is calculated. Under different temperature and humidity environment, the air flow rate of the same packing box is higher than that of the 30-40mL/min interval. Improvement measures were applied to determine the packing seal value index of soft package cigarettes under certain conditions

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