Share This Article:

Modeling and Simulation of Evaporative Cooling System in Controlled Environment Greenhouse

Abstract Full-Text HTML Download Download as PDF (Size:262KB) PP. 67-71
DOI: 10.4236/sgre.2012.31010    8,507 Downloads   16,137 Views   Citations

ABSTRACT

Greenhouses are used for the main purpose of improving the environmental conditions in which plants are grown. There are many parameters can affect the growing of plants inside greenhouse, such as air temperature and relative humidity. The adjustment of these parameters is achieved by selecting appropriate control actions. This work proposes a controlling technique for greenhouse indoor temperature and relative humidity. The proposed greenhouse cooling system temperature controller is designed to adjust the air volume flow rate in pad-fan cooling system to fix the greenhouse indoor temperature at 20?C and 70% relative humidity. The designed control technique is realized to ensure the required and continuous operation of the greenhouse. Moreover, this work present, a complete mathematical modeling and simulation of cooling system is introduced. In addition, a computer model based on MATLAB SIMULINK software has been used to predict the temperature and relative humidity profiles inside the greenhouse. The results are realized the requirements of the greenhouse cooling system environment.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

F. Fahmy, H. Farghally, N. Ahmed and A. Nafeh, "Modeling and Simulation of Evaporative Cooling System in Controlled Environment Greenhouse," Smart Grid and Renewable Energy, Vol. 3 No. 1, 2012, pp. 67-71. doi: 10.4236/sgre.2012.31010.

References

[1] K. S. Kumar, K. N. Tiwari and M. K. Jha, “Design and Technology for Greenhouse Cooling in tropical and Subtropical Regions: A Review,” Energy and Buildings, Vol. 41, 2009, pp. 1269-1275. doi:10.1016/j.enbuild.2009.08.003
[2] C. Kittas, M. Karamanis and N. Katsoulas, “Air Temperature Regime in a Forced Ventilated Greenhouse with Rose Crop,” Energy and Buildings, Vol. 37, 2005, pp. 807-812. doi:10.1016/j.enbuild.2004.10.009
[3] R. A. Bucklin, J. D. Leary, D. B. McConnell and E. G. Wilkerson, “Fan and Pad Greenhouse Evaporative Cooling Systems,” University of Florida, Florida, 2010.
[4] Abdel-Ghany and A. M. Kozai, “Dynamic Modeling of the Environment in a Naturally Ventilated, Fog-Cooled Greenhouse,” Renewable Energy, Vol. 31, No. 10, 2006, pp. 1521-1539. doi:10.1016/j.renene.2005.07.013
[5] A. Hughes, “Electric Motors and Drives Fundamentals,” Types and Applications, Newnes, 2006.
[6] I. M. Al-Helal, “A Computational Fluid Dynamics Study of Natural Ventilation in Arid Region Greenhouses,” Ph.D. Thesis, The Ohio State University, Columbus, 1998.
[7] E. M. Ahmed, O. Abaas, M. Ahmed and M. R. Ismail, “Performance Evaluation of Three Different Types of Local Evaporative Cooling Pads in Greenhouses in Sudan,” Saudi Journal of Biological Sciences, Vol. 18, No. 1, 2011, pp. 45-51.
[8] A. Ganguly and S. Ghosh, “Modeling and Analysis of a Fan-Pad Ventilated Floricultural Greenhouse,” Energy and Buildings, Vol. 39, No.10, 2007, pp. 1092-1097. doi:10.1016/j.enbuild.2006.12.003
[9] W. Bolton, “Control Engineering,” Longman Group, Harlow, 1992.
[10] K. Ogata, “Modern Control Engineering,” Prentice-Hall Inc., Englewood Cliffs, 1990.
[11] J. L. Guzmán, F. Rodríguez, M. Berenguel and S. Dormido, “Virtual Lab for Teaching Greenhouse Climate Control,” Proceedings of the 16th IFAC World Congress, IFAC, Prague, 2005, pp. 2158-2163.

  
comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.