Design and Performance Evaluation of Hot Air-Microwave Continuous Belt Dryer for Drying Block Rubber STR 20

Abstract:

This aim of this research study was to examine the design and construction, as well as to test the performance of hot air-microwave continuous belt dryer machines for drying block rubber STR 20. This industrial type of machine is divided into three major systems: 1) the hot air system, 2) the microwave heating system, and 3) the drying room and conveyor systems. The experiments in this study have shown that the machine can produce heat in the temperature range covered to dry block rubber and the temperature is precise enough within a range of 100 to 130°C (±0.5°C). Security experiments on the microwave leakage have shown that it does not exceed the standards of the HHS (no more than 5 mill watts per square centimeter). Performance experiments have indicated the heat distribution was 83.46 percent which is over 65% of what is considered normal, and the power of the microwave was measured by testing was the value of 24.42 percent of the magnetron wattage used.

• Periodical: Advanced Materials Research (Volumes 1044-1045)
• Pages: 280-286
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1044-1045.280
• Online since: October 2014
• Authors: Bundit Suriyavongpongsa*, Cumnueng Watyotha
• Keywords: Cavity, Magnetron, Microwave, Microwave Heating

References

[1] Cumnueng Watyotha and Jarinee Jongpluempiti. Dielectric Properties of Natural Rubber Sheets at 915 and 2450 MHz. Agricultural Sci. J. 38 : 5 (Suppl. ) : 275-278 (2007).

[2] Cumnueng Watyotha and Chaloemkwan Ariyawong. Preliminary Study on Hot Air and Microwave Drying of Block Rubbers. Agricultural Sci. J. 38 : 5 (Suppl. ) : 259-262 (2007).

[3] Chaloemkwan Ariyawong (2010). The Study of Procedure and Development of A Dryer for Block Rubber STR 20 Using Microwave. Khon Kaen : Faculty of Engineering Khon Kaen University.

DOI: 10.12982/cmujns.2018.0001

[4] Jarinee Jongpluempiti and Cumnueng Watyoth. Effects of Weight on Microwave Drying Characteristics of Block Rubber STR 20. Khon Kaen : Faculty of Engineering Khon Kaen University. (2008).

DOI: 10.12982/vis.2022.003

[5] Piyapong Moumgmanee and Werayuth Limsakul (2006). Guidelines Drying Block Rubber STR 20. Songkla: Department of Chemical Engineering Faculty of Engineering Prince of Songkla University.

[6] Phadungsak Rattanadecho (2008). Fundamentals of Microwave Heating. Bangkok: Thammasat University.

[7] Verhaar G, (1973). Food and Agricultural Organization of the United Nations: Processing of natural rubber, Rome.

[8] International Standard IEC 60705 Ed. 4. 0 2010-04 Household Microwave Ovens – Methods for Measuring Performance.

[9] Charles E. Baukal, Jr. (2004) Industrial Burners Handbook. United States of America.