# 연속 살균기의 온도제어 및 최적설계에 관한 연구

• Park, Cheol Jae (School of Mechanical and Automotive Engineering, Daegu Univ.)
• 박철재 (대구대학교 기계자동차공학부)
• Accepted : 2015.05.11
• Published : 2015.08.01
• 43 4

#### Abstract

In this paper, we analyzed the problems of a batch-type sterilizer and design a continuous sterilizer to control the temperature deviation. The temperature deviation is analyzed with respect to design parameters such as a nozzle diameter, hole diameter, and nozzle length. The significant temperature parameters are optimized using the response surface methodology. An experimental apparatus is developed using the optimized design parameters. Using a field test, we show that the target temperature is obtained in about 7.3 minutes and the temperature deviation is improved about $0.84^{\circ}C$. The optimized parameters from the test are equal to the analytical parameters.

#### Keywords

Continuous Sterilizer;Temperature Control;Parameter Optimization;Response Surface Methodology

#### Acknowledgement

Supported by : 대구대학교

#### References

1. Park, M. H., 1982, Retort Food, KyoHakSa, Seoul, pp. 110-150.
2. Chen, G., Campanella, O. H., Corvalan, C. M. and Haley, T. A., 2008, "On-Line Correction of Process Temperature Deviations in Continuous Retorts," Journal of Food Engineering, Vol. 84, Iss. 2, pp. 258-269. https://doi.org/10.1016/j.jfoodeng.2007.05.017
3. Smout, C., Loey, A. V. and Hendrickx, M., 2001, "Role of Temperature Distribution Studies in the Evaluation and Identification of Processing Conditions for Static and Rotary Water Cascading Retorts," Journal of Food Engineering, Vol. 48, Iss. 1, pp. 61-68. https://doi.org/10.1016/S0260-8774(00)00146-1
4. Chen, C. R. and Ramaswamy, H. S., 2004, "Multiple Ramp-Variable Retort Temperature Control for Optimal Thermal Processing," Food and Bioproducts Processing, Vol. 82, Iss. 1, pp. 78-88. https://doi.org/10.1205/096030804322985353
5. Llave, Y. A., Hagiwara, T. and Sakiyama, T., 2012, "Artificial Neural Network Model for Prediction of Cold Spot Temperature in Retort Sterilization of Starch-Based Foods," Journal of Food Engineering, Vol. 109, Iss. 3, pp. 553-560. https://doi.org/10.1016/j.jfoodeng.2011.10.024
6. Chen, C. R. and Ramaswamy, H. S., 2002, "Modeling and Optimization of Variable Retort Temperature (VRT) Thermal Processing using Coupled Neural Networks and Genetic Algorithms," Journal of Food Engineering, Vol. 53, Iss. 3, pp. 209-220. https://doi.org/10.1016/S0260-8774(01)00159-5
7. Simpson, R., Figueroa, I. and Teixeira, A., 2007, "Simple, Practical, and Efficient On-Line Correction of Process Deviations in Batch Retort Through Simulation," Food Control, Vol. 18, Iss. 5, pp. 458-465. https://doi.org/10.1016/j.foodcont.2005.12.003
8. Ryfa, A., Buczynski, R., Chabinski, M., Szlek, A. and Bialecki, R. A., 2014, "Decoupled Numerical Simulation of a Solid Fuel Fired Retort Boiler," Applied Thermal Engineering, Vol. 73, Iss. 1, pp. 794-804. https://doi.org/10.1016/j.applthermaleng.2014.08.029
9. Simpson, R., Figueroa, I. and Teixeira, A., 2006, "Optimum On-Line Correction of Process Deviations in Batch Retorts through Simulation," Food Control, Vol. 17, Iss. 8, pp. 665-675. https://doi.org/10.1016/j.foodcont.2005.06.004
10. Simpson, R., Abakarov, A. and Teixeira, A., 2008, "Variable Retort Temperature Optimization using Adaptive Random Search Techniques," Food Control, Vol. 19, Iss. 11, pp. 1023-1032. https://doi.org/10.1016/j.foodcont.2007.10.010
11. Park, C. J., 2012, "Dynamic Temperature Control with Variable Heat Flux for High Strength Steel," International Journal of Control, Automation, and Systems, Vol. 10, No. 3, pp. 659-665. https://doi.org/10.1007/s12555-012-0325-5
12. Lee, J. H., 2002, Numerical Heat Transfer and Fluid Flow, Taehun Publishing, Seoul, pp. 54-109.
13. Dukhan, N., Al-Rammahi, M. A. and Suleiman, A. S., 2013, "Fluid Temperature Measurements Inside Metal Foam and Comparison to Brinkman- Darcy Flow Convection Analysis," International Journal of Heat and Mass Transfer, Vol. 67, pp. 877-884. https://doi.org/10.1016/j.ijheatmasstransfer.2013.08.055
14. Ha, M. Y. and Choi, B. S., 1999, "A Numerical Study of Turbulent Flow, Heat Transfer, and Solidification in Twin-Roll Continuous Casting," Trans. Korean Soc. Mech. Eng. B, Vol. 23, No. 1, pp. 12-24.
15. Park, C. J., 2015, "Design of Continuous Sterilizer for Retort Pouch," Journal of the Korean Society for Power System Engineering, Vol. 19, No. 2, pp. 57-63. https://doi.org/10.9726/kspse.2015.19.2.057
16. Park, C. J., Han, S. H., Lee, D. M. and Kwon, W. H., 2007, "Direct Width Control Systems based on Width Prediction Models in Hot Strip Mill," ISIJ International, Vol. 47, No. 1, pp. 105-113. https://doi.org/10.2355/isijinternational.47.105