Investigation of a root zone heating system for greenhouse seedling and its effects on micro-environment
Keywords:
greenhouse, root zone heating system, micro-environment, seedling, substrate temperature, air temperatureAbstract
Under the extremely cold climatic condition, crops have to survive severe heat stress conditions, even if they are being kept in greenhouses. In the winter and spring of North China, the air and soil temperature is low inside the greenhouse, and when using a traditional heating system, the energy consumption is high. This paper reports on a study of different design solutions for a root zone heating system based on a kind of low temperature radiation material. Root zone heating systems offer increasing crop quality and productivity. A novel type of heat preservation and root zone heating system was applied in greenhouse seedling. And through multiple experiments, the effect of the root zone heating system on the ambient environment and seedbed surface was studied, and the heat preservation effect and heating uniformity were discussed. Results show that single-layer film covering on the root zone heating system can make the average temperature at night increase 1°C. And the average seedbed surface and substrate temperature can increase 11.3°C and 5.2°C, respectively. In conclusion, the root zone heating system can effectively improve the environmental temperature of seedling and the uniformity of heating is high, which provides a strong guarantee for high-quality seedling cultivation. Keywords: greenhouse, root zone heating system, micro-environment, seedling, substrate temperature, air temperature DOI: 10.25165/j.ijabe.20201306.5905 Citation: He F, Hou Y, Li K, Wei X M, Liu Y Q. Investigation of a root zone heating system for greenhouse seedling and its effects on the micro-environment. Int J Agric & Biol Eng, 2020; 13(6): 47–52.References
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[22] He F, Hou Y, Li K, Zhang Y F, Li Z X. Influence of root zone heating on seedling environment in solar greenhouse by carbon crystal electrothermal film. Northern Horticulture, 2018; 23: 60–64. (in Chinese)
[2] Reda H E H, Li M, Tang Y L. The evacuated tube solar collector assisted heat pump for heating greenhouses. Energy & Buildings, 2018; 169: 305–318.
[3] Zhang B G, Fan X Y, Liu M, Hao W G. Experimental study of the burning-cave hot water soil heating system in solar greenhouse. Renewable Energy, 2016; 87: 1113–1120.
[4] Zhou N J, Yu Y X, Yi J P, Liu R.A study on thermal calculation method for a plastic greenhouse with solar energy storage and heating. Solar Energy, 2017; 142: 39–48.
[5] Bazgaoua A, Fatnassib H, Bouhroudc R, Gourdoa L, Ezzaeria K, Tiskatinea R, et al. An experimental study on the effect of a rock-bed heating system on the microclimate and the crop development under Canarian greenhouse. Solar Energy, 2018; 176: 42–50.
[6] Abderrahim B, Hicham F, Rachid B, Kabira E, Lahoucine G, Ahmed W, et al. Efficiency assessment of a solar heating cooling system applied to the greenhouse microclimate. Materials Today: Proceedings, 2020; 24: 151–159.
[7] Kavga A, Karanastasi E, Konstas I, Panidis T. Performance of an infrared heating system in a production greenhouse, IFAC Proceedings Volumes, 2013; 46(18): 235–240.
[8] Kawasaki Y, Matsuo S, Kanayama Y, Kanahama K. Effect of root-zone heating on root growth and activity, nutrient uptake, and fruit yield of tomato at low air temperatures. J. Jpn. Soc. Hortic. Sci., 2014; 83: 295–301.
[9] Gonzalez-Fuentes J A, Shackel K, Heinrich Lieth J, Albornoz F, Benavides-Mendoza A, Evans R Y. Diurnal root zone temperature variations affect strawberry water relations, growth, and fruit quality, Scientia Horticulturae, 2016; 203: 169–177.
[10] Attar I, Naili N, Khalifa N, Hazami M, Farhat A. Parametric and numerical study of a solar system for heating a greenhouse equipped with a buried exchanger. Energy Conversion and Management, 2013; 70: 163–173.
[11] Zhang H M, Jin H J, Ding X T, Yu J Z. Effects of different heating devices on cucumber seedling and plant growth in winter season. Chinese Cucurbits and Vegetables, 2012; 25(4): 12–15. (in Chinese)
[12] Zhao Y L, Yu X C, Li Y S, He C X, Yan Y. Application of electric carbon crystal soil-warming system for tomato production in greenhouse. Transactions of the CSAE, 2013; 29(4): 131–138. (in Chinese)
[13] Li Y S, Zhao Y L, He C X, Yan Y, Yu X C. Application of electric carbon crystal warming board for seedlings culture cucumber in greenhouse in winter. Journal of China Agricultural University, 2014; 19(6): 126–133. (in Chinese)
[14] Ding X M, He F, Duan J, Lian Q L, Zhang Q S. Design of low
temperature heating system in solar greenhouse using capillary tube mat exchange. Transactions of the CSAE, 2013; 29(19): 178–184. (in Chinese)
[15] He F, Fu J L, Ding X M, Pan S J, Li Z X, Zhou C J. Design and test of seedbed hating system based on capillary network in solar greenhouse. Journal of China Agricultural University, 2017; 22(2): 123–128. (in Chinese)
[16] Beyza B, Halime P, Yildiz D. Root zone temperature control with thermal energy storage in phase change materials for soilless greenhouse applications. Energy Conversion and Management, 2013; 74: 446–453.
[17] Llorach-Massana P, Pena J, Rieradevall J, Montero J I. Analysis of the technical, environmental and economic potential of phase change materials (PCM) for root zone heating in Mediterranean greenhouses, Renewable Energy, 2017; 103: 570–581.
[18] Muhammad A, Wang X C, Muhammad Y, Muhammad U, Khurram Y, Yang Z J, et al. Performance evaluation of root zone heating system developed with sustainable materials for application in low temperatures. Sustainability, 2018; 10: 4130. doi: 10.3390/su10114130.
[19] Muhammad A, Zhang Z, Wang X C, Muhammad Y, Muhammad U, Rana S N, et al. An investigation of a root zone heating system and its effects on the morphology of Winter-Grown green peppers. Energies, 2019; 12: 933. doi: 10.3390/en12050933.
[20] Tan Y F, Guo L R, Chen J X, Zhang H Q. Test simulation and temperature control of carbon crystal electric heating system. Journal of Harbin Institute of Technology, 2012; 44(6): 70–73. (in Chinese)
[21] He J, Li Y X, Wang S. Design and application of carbon crystal electric heating system. Power Demand Side Management, 2016; 5: 25–28. (in Chinese)
[22] He F, Hou Y, Li K, Zhang Y F, Li Z X. Influence of root zone heating on seedling environment in solar greenhouse by carbon crystal electrothermal film. Northern Horticulture, 2018; 23: 60–64. (in Chinese)
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Published
2020-12-03
How to Cite
He, F., Hou, Y., Li, K., Wei, X., & Liu, Y. (2020). Investigation of a root zone heating system for greenhouse seedling and its effects on micro-environment. International Journal of Agricultural and Biological Engineering, 13(6), 47–52. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5905
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Animal, Plant and Facility Systems
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