Estimated viability of greenhouse cooling technologies for growing a tomato crop under various climates

Yating Yang, Shirong Guo, Yongsheng Chen

Abstract


The viability of fan and natural ventilation, combined with evaporative cooling, was investigated using a simulation model and weather data for thirty-seven locations in the world (mostly in China). And the geographical distribution pattern of viable cooling technologies was examined in China. The model used was based on a simplified steady-state heat balance of a greenhouse, and weather data were from corresponding meteorological organizations. The evapotranspiration coefficient used two values of 0.5 and 1.0, and ventilation rates for natural ventilation were based on two empirically constructed equations. The results suggested that the viability of various cooling technologies depended largely on local weather, although evapotranspiration coefficient and ventilation characteristics of natural ventilation also played important roles. Some locations were sensitive to evapotranspiration coefficient and ventilation rate while some were not. The locations which were not sensitive to evapotranspiration coefficient and ventilation rate could choose the most economical technology to meet the cooling minimum, but these locations which were sensitive required evaporative cooling and/or forced ventilation. A detailed examination of the geographical pattern of viable cooling technologies was conducted for China. The results suggest that high altitude general provides a cooling advantage.
Keywords: climate, cooling, evaporative cooling, greenhouse, ventilation, viability, tomato
DOI: 10.25165/j.ijabe.20211404.6134

Citation: Yang Y T, Guo S R, Chen Y S. Estimated viability of greenhouse cooling technologies for growing a tomato crop under various climates. Int J Agric & Biol Eng, 2021; 14(4): 90–95.

Keywords


climate, cooling, evaporative cooling, greenhouse, ventilation, viability, tomato

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References


Nikolaou G, Neocleous D, Katsoulas N, Kittas C. Effects of cooling systems on greenhouse microclimate and cucumber growth under Mediterranean climatic conditions. Agronomy, 2019; 9(6): 300. doi: 10.3390/agronomy9060300.

Ren S G, Yang W, Wang H Y, Xue W, Xu H L, Xiong Y J. Prediction model on temporal and spatial variation of air temperature in greenhouse and ventilation control measures based on CFD. Transactions of the CSAE, 2015; 31(13): 207–214. (in Chinese)

Kittas C. A simple climagraph for characterizing regional suitability for greenhouse cropping in Greece. Agricultural and Forest Meteorology, 1996; 78(1-2): 133–141.

Sun W T, Zhou B, Xu F, Shang C, Lu C G, Guo W Z. Performance of positive pressure fan-pad cooling system and cooling load model for Chinese solar greenhouse. Transactions of the CSAE, 2019; 35(16): 214–224.

Seginer I. Alternative design formulae for the ventilation rate of greenhouses. Journal of Agricultural Engineering Research, 1997; 68(4): 355–365.

Koca R W, Hughes W C, Christianson L L. Evaporative cooling pads: Test procedure and evaluation. Applied Engineering in Agriculture, 1991; 7(4): 485–490.

Ding X M, Zhou C J. Test and measurement of solar visible radiation transmittance of greenhouse glazing. Transactions of the CSAE, 2008; 24(8): 210–213. (in Chinese)

ANSI/ASAE EP406.2. Standard ASABE. Heating, ventilating and cooling greenhouses, St. Joseph, Michigan, USA: ASAE, 2008.

Albright L D. Environment control for animals and plants.: St. Joseph, Michigan, USA: ASAE, 1991; 276p.

Katsoulas N, Baille A, Kittas C. SE—Structures and Environment: Influence of leaf area index on canopy energy partitioning and greenhouse cooling requirements. Biosystems Engineering, 2002; 83(3): 349–359.

Willits D H. Fan ventilated greenhouses cooling: Some considerations for design. Acta Horticulturae, 2006; 719: 83–96.

Willits D H. Cooling fan ventilated greenhouses: a modeling study. Biosystems Engineering, 2003; 84(3): 315–329.

Lee I, Short T H. Two-dimensional numerical simulation of natural ventilation in a multi-span greenhouse. Transactions of the ASAE, 2000; 43(3): 745–753.

Kacira M, Sase S, Okushima L. Optimization of vent configuration by evaluating greenhouse and plant canopy ventilation rates under wind-induced ventilation. Transactions of the ASAE, 2004; 47(6): 2059–2067.

Kacira M, Sase S, Okushima L. Effect of side vents and span numbers on wind-induced natural ventilation of a gothic multi-span greenhouse. Japan Agricultural Research Quarterly, 2004; 38(4): 227–233.

Bottcher R W, Baughman G R, Gates R S, Timmons M B. Characterizing efficiency of misting systems for poultry. Transactions of the ASAE, 1991; 34(2): 586–590.

Li S, Willits D H, Yunker C. Experimental study of a high-pressure fogging system in naturally ventilated greenhouses. Acta Horticulturae, 2006; 719, 393–400.

Guan W J. HVAC data manual. Beijing: China Architecture & Building Press, 2016; pp.256–279.

Department of Energy. 2006. Available: http://www.eere.energy.gov/ buildings/energyplus/cfm/weather_data.cfm. Accessed on [2020-7-15].

Li S, Guo S. Protected horticulture. Beijing: China Agriculture Press, 2002; 179p.

Liu Y J, Xu J T, Pang S R, Sun Z P, Li T L. Design of positive-pressure wet curtain fan system for solar greenhouse and its cooling effects. Journal of China Agricultural University, 2019; 24(5): 130–139. (in Chinese)

Wang T L, Li T L, Bai Y K, Yu W. Experimental research on the application of wet screen- air blower cooling. Journal of Shenyang Agricultural University, 2007; 38(6): 837–840. (in Chinese)

Liu Y H. Greenhouse thermo-hygro environment character in greenhouse in southern China during summer. In: Study on regulation mechanism of greenhouse thermo-hygro environment in southern China during summer. Doctoral dissertation. Guangzhou: South China University of Technology, 2017; pp.21–29. (in Chinese)

Chen Z H, Ren F J, Yu T, Tang M, Jiang R X, Liu J J, et al. Analysis of ventilation and cooling effects of installing axial fans in wet curtain cooling dairy cattle barn. Transactions of the CSAE, 2021; 37(5): 198–208. (in Chinese)

Xu F, Cai Y W, Chen J L, Zhang L B. Temperature/flow field simulation and parameter optimal design for greenhouses with fan-pad evaporative cooling system. Transactions of the CSAE, 2015; 31(9): 201–208. (in Chinese)




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