A Cooling System for a Mushroom House for Use in the Upper Central Region Climate of Thailand
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Abstract
This study investigated a cooling system for mushroom cultivation for both experimental and theoretical purposes. The system was used in shitake mushroom cultivation in the upper central region climate of Thailand in winter. The system consisted of a night cooling system, a cooling coil and direct evaporative pad cooling. The night cooling system was set up and tested from November to December 2017. The COP equation for the system was correlated with experimental data and then used to predict cold water tank temperature. It was found that the cold water tank temperature was 25.50 °C, while the average dry bulb day time temperature and wet bulb night time temperatures were 31 °C and 25.72 °C respectively. The outlet air temperature from the whole system was then estimated from the cold water tank temperature. The resulting outlet air temperature was cooled to 22.04 °C. Thus, the system could satisfy the criteria temperature for the air temperature inside the mushroom house which was defined at 28 °C.
Nomenclature
A heat transfer area, m2
Cp specific heat, kJ kg-1 K-1
COP coefficient of performance
m mass , kg
RH relative humidity
T temperature, °C
U overall heat transfer coefficient, W m-2 K-1
Subscript
ci cold fluid inlet
db dry bulb
hi hot fluid inlet
w water
wb wet bulb
Keywords: Cooling, Mushroom, Greenhouse
References
Ashrafuzzaman, M., Kamruzzaman, A. M., Razi, S. M., Shahidullah, S.M., & Fakir, S. A. (2009). Substrate affects growth and yield of shiitake mushroom. African Journal of Biotechnology, 8(13), 2999-3006.
Chang, S. T., & Miles, P. G. (1989). Edible Mushrooms and Their Cultivation. Florida: CRC Press.
Hajidavaloo, E., & Eghtedari, H. (2010). Performance improvement of air-cooled refrigeration system by using evaporatively cooled air condenser. International Journal of Refrigeration, 33, 982-988.
Heidarinejad, G., Farahani, M.F. & Delfani, S. (2010). Investigation of a hybrid system of nocturnal radiative cooling and direct evaporative cooling. Building and Environment, 45, 1521–1528.
Hou, T. F., Hsieh, Y., Lin, T., Chuang, Y., & Huang, B. J. (2016). Cellulose-pad water cooling system with cold storage. International Journal of Refrigeration, 69, 383–393.
Kumar, K. S., Tiwari., K. N., & Jham, M. K. (2009) Design and technology for greenhouse cooling in tropical and subtropical regions: a review. Energy Building, 41, 1269–75.
Manzi, P., Aguzzi, A., & Pizzoferrato, L. (2001). Nutritional value of mushrooms widely consumed in Italy. Food Chemistry, 73(3), 321–325.
Martinez, P., Ruiz, J., Cutillas, C. G., Martinez, P. J., Kaiser, A. S., & Lucas, M. (2016). Experimental study on energy performance of a split air-conditioner by using variable thickness evaporative cooling pads coupled to the condenser. Applied Thermal Engineering, 105, 1041–1050.
Stull, R. (2011) Wet-Bulb Temperature from Relative Humidity and Air Temperature. Journal of Applied Meteorological and Climatology, 50, 2267-2269.
Taylor, J. R. (1982). An Introduction to error analysis (2nd Ed.). California: University Science Books.
Technology Biological Research Office. (2017). Mushroom strain service. [Brochure]. Bangkok: Department of Agriculture.
Thai Meteorological Department. (2017). Retrieve from https://www.tmd.go.th/info/climate_of_thailand-2524-2553.pdf
Wang, S. K. (1993). Handbook of Air Conditioning and Refrigeration (12.6-12.9). New York: McGraw-Hill.
Wasser, S. P. (2005). Shiitake (Lentinus edodes). Encyclopedia of Dietary supplements. New York: Marcel Dekker.
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