Drying performance of a tumbler dryer with condenser

Kyu Sun Lee; Byoungyull Yang; Sang Yeon Pyo; Hyung Gyoon Kim; Dong Hyun Lee; Sang Done Kim

Korean Journal of Chemical Engineering, Vol.23, No.4, 658-662, July, 2006

DOI10.1007/BF02706810 Export Citation

Drying performance of a tumbler dryer with condenser

Kyu Sun Lee, Byoungyull Yang¹, Sang Yeon Pyo¹, Hyung Gyoon Kim¹, Dong Hyun Lee^†, and Sang Done Kim²

Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
¹Home Solution Lab., Samsung Electronics Co., Suwon 442-742, Korea
²Department of Chemical and Biomolecular Engineering and Energy & Environment Research Center, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea

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The effects of flow rates of hot air and cooling water on drying percentage and energy efficiency of cotton lint in a cylindrical type drum tumbler dryer (0.54m-ID×0.34m-high) have been determined. Drying of the lint is mainly affected by flow rate of hot air, which is a function of the diameter ratio (DM/DF) of motor and fan pulley and motor capacity. During the drying process in the tumbler dryer, temperatures and humidity before and after were measured to determine the drying characteristics. The volumetric flow rate of hot air increases with increasing the diameter ratio of the motor and fan pulley, whereas the volumetric flow rate of hot air decreases with an increase in the mass flow rate of the cooling water through the condenser. The energy consumed by the motor relied more on the diameter ratio of the motor and fan pulley as opposed to the mass flow rate of cooling water. Despite the increase in the drying percentage with increasing the diameter ratio of the motor and fan pulley and the mass flow rate of the cooling water, the energy efficiency decreased.

Keywords:Cotton Lint;Tumbler Dryer;Drying Percentage;Energy Efficient

[References]

Barker GL, Laird JW, Transactions of the ASAE, 36(6), 1555 (1993)
Barker GL, J. Agric. Engng Res., 63, 353 (1996)
Chang YS, Lee SW, Kim SY, Chung PS, “Experimental study on performance characteristics of drum type dryer (Korean language),” Spring Conference Proceeding of The Korean Society of Mechanical Engineers, 187 (2000)
Yang DH, Lee DH, Han GY, Korean J. Chem. Eng., 19(6), 1112 (2002)
Conde MR, Appl. Therm. Eng., 17, 1163 (1997)
Deans J, Appl. Therm. Eng., 21, 977 (2001)
Park YS, Shin HN, Lee DH, Kim DJ, Kim JH, Lee YK, Sim SJ, Choi KB, Korean J. Chem. Eng., 20(6), 1170 (2003)
Strumillo C, Kudra T, Drying: principles, applications and design, GORDON AND BREACH, Poland (1986)
Wang ZH, Chen GH, Chem. Eng. Sci., 54(19), 4233 (1999)
Zahed AH, Zhu JX, Grace JR, Dry. Technol., 13, 1 (1995)

[Referenced By]

[Related Articles]

[1] Barker GL, Laird JW, Transactions of the ASAE, 36(6), 1555 (1993)

[2] Barker GL, J. Agric. Engng Res., 63, 353 (1996)

[3] Chang YS, Lee SW, Kim SY, Chung PS, “Experimental study on performance characteristics of drum type dryer (Korean language),” Spring Conference Proceeding of The Korean Society of Mechanical Engineers, 187 (2000)

[4] Yang DH, Lee DH, Han GY, Korean J. Chem. Eng., 19(6), 1112 (2002)

[5] Conde MR, Appl. Therm. Eng., 17, 1163 (1997)

[6] Deans J, Appl. Therm. Eng., 21, 977 (2001)

[7] Park YS, Shin HN, Lee DH, Kim DJ, Kim JH, Lee YK, Sim SJ, Choi KB, Korean J. Chem. Eng., 20(6), 1170 (2003)

[8] Strumillo C, Kudra T, Drying: principles, applications and design, GORDON AND BREACH, Poland (1986)

[9] Wang ZH, Chen GH, Chem. Eng. Sci., 54(19), 4233 (1999)

[10] Zahed AH, Zhu JX, Grace JR, Dry. Technol., 13, 1 (1995)