Applications of an Earth-air Heat Exchanger System for Temperature and Humidity Control in a Pleurotus sajor-caju Mushroom House
Article Sidebar
Main Article Content
Abstract
The purpose of this research is to study the application of an earth-air heat exchanger system to control temperature and humidity in a Pleurotus aajor-caju mushroom house. Firstly, this research conducted measurements of underground temperatures at three depth levels for three soil groups in Udon Thani. Secondly, the calculation of the earth-air heat exchanger system was implemented for a 2.25 m ? 2.25 m and 2.4 m high mushroom house and the real system was constructed. Finally, experiments on the performance test of the system were conducted, including mushroom cultivation experiments. The results of this research show that the underground temperature in Udon Thani is around 27–30?C and is a great potential use for the earth-air heat exchanger system at 1.5–2 m deep. The performance test of the system shows that the temperature can be reduced by 5?C from ambient temperature during warm temperature in the daytime. At the air supply speed of 5.4 m/s and underground temperature at 29?C, the mushroom house temperature can be reduced by 4?C, and the temperature gap between the air supply outlet and the underground was only 0.5?C because the air supply speed possesses the highest heat transfer rate. After installing a fogging system, including an automatic control system, the system can maintain relative humidity in the mushroom house above 80 percent, which is suitable for mushroom cultivation. Apart from that, the cultivation test of 400 mushroom cubes was conducted in the mushroom house compared with a traditional mushroom house. It is found that mushroom quantity received is higher than that of the cultivation in the conventional mushroom for 23 percent. However, it is reduced to 12 percent when considering installation cost of the underground temperature system. In conclusion, the use of the earth-air heat exchanger system with the mushroom house can help farmers in mushroom cultivation during the off-season.
Article Details
The articles published are the opinion of the author only. The author is responsible for any legal consequences. That may arise from that article.
References
[2] Department of Agricultural Extension. (2017). List of community enterprises. [Online]. Available: https://smce.doae.go.th/ProductCategory/SmceCategory.php
[3] Kung Krabaen Bay Royal Development Study Centre. (2020). Economic Mushroom Production. [Online]. Available: https://www4.fisheries.go.th/
[4] Q. A. Mandeel, A. A. Al-Laith, and S. A. Mohamed, “Cultivation of oyster mushrooms (Pleurotus spp.) on various lignocellulosic wastes,” World Journal of Microbiology and Biotechnology, vol. 21, pp. 601–607, 2005.
[5] P. Patel and R. Trivedi, “Importance and effect of substrate for the cultivation of pleurotus sajor-caju,” International Journal of Science and Research (IJSR), vol. 4, no. 1, pp. 1324–1326, 2015.
[6] G. M. Philip and C. Shu-Ting, Mushrooms: Cultivation, Nutritional Value, Medicinal Effect, and Environmental Impact, 2nd ed., CRC Press, 2004.
[7] C. P. Pokhrel, N. Kalyan, U. Budathoki, and R. K. Yadav, “Cultivation of Pleurotus sajor-caju using different agricultural residues,” International Journal of Agricultural Policy and Research, vol. 1, no. 2, pp. 019-023, 2013.
[8] S. A. Shinde, A. B. Pandey, and S. S. Patil, “Temperature and light intensity influences on growth of Pleurotus sajor-caju,” Journal of Chemical, Biological and Physical Sciences, vol. 6, pp. 261–265, 2016.
[9] M. Rout, K. Mohapatra, and P. Mohanty, “Studies on effect of incubation temperature and light intensity on mycelial growth of oyster species,” Journal Crop and Weed, vol. 11, pp. 44–46, 2015.
[10] S. Thepa, K. Kirtikara, J. Hirunlabh, and J. Khedari, “Improving indoor conditions of a Thai-style mushroom house by means of an evaporative cooler and continuous ventilation,” Renewable Energy, vol. 17, no. 3, pp. 359–369, 1999.
[11] I. M. A. Aljubury and H. D. a. Ridha, “Enhancement of evaporative cooling system in a greenhouse using geothermal energy,” Renewable Energy, vol. 111, pp. 321–331, 2017.
[12] M. Ghoulem, K. El Moueddeb, E. Nehdi, R. Boukhanouf, and J. Kaiser Calautit, “Greenhouse design and cooling technologies for sustainable food cultivation in hot climates: Review of current practice and future status,” Biosystems Engineering, vol. 183, pp. 121–150, 2019.
[13] N. Nkolisa, L. S. Magwaza, T. S. Workneh, and A. Chimphango, “Evaluating evaporative cooling system as an energy- free and cost- effective method for postharvest storage of tomatoes (Solanum lycopersicum L.) for smallholder farmers,” Scientia Horticulturae, vol. 241, pp. 131–143, 2018.
[14] Y. Uchida, K. Yasukawa, N. Tenma, Y. Taguchi, T. Ishii, and J. Suwanlert, “Subsurface temperature survey in Thailand for geothermal heat pump application,” Journal of the Geothermal Society of Japan, vol. 33, pp. 93–98, 2011.
[15] S. Mongkon and S. Polvongsri, “Enhancement of the cooling performance of earth tube system by increasing soil moisture for use in agricultural greenhouse,” RMUTI Jounal of Science and Technology, vol. 9, no. 3, pp. 151–164, 2016 (in Thai).
[16] S. Bantoengpaiboon, “Energy saving air conditioning system design with a ground heat exchanger,” M.S. thesis, School of Construction and Infrastructure Management, Suranaree University of Technology, 2018 (in Thai).
[17] T. Sri-on and A. Koonsrisuk, “Cooling performance of a hybrid ground-source heat pump with different cooling-water loop configurations,” in Proceedings The 34th National Graduate Research Conference, 2015, pp. 188–197 (in Thai).
[18] M. C. Lekhal, R. Belarbi, A. M. Mokhtari, M.-H. Benzaama, and R. Bennacer, “Thermal performance of a residential house equipped with a combined system: A direct solar floor and an earth–air heat exchanger,” Sustainable Cities and Society, vol. 40, pp. 534–545, 2018.
[19] Land Development Department. (2016). Provincial soil resource information. [Online]. Available: http://www.ldd.go.th/www/lek_web/
[20] Y. A. Cengel and A. J. Ghajar, Heat and Mass Transfer: Fundamentals and Applications. McGraw Hill Education, 2015.
[21] A. A. Serageldin, A. K. Abdelrahman, and S. Ookawara, “Earth-air heat exchanger thermal performance in Egyptian conditions: Experimental results, mathematical model, and Computational Fluid Dynamics simulation,” Energy Conversion and Management, vol. 122, pp. 25–38, 2016.
[22] P. Patel and R. Trivedi, “Effect of substrate and spawn rate on the growth parameter, yield and biological efficiency of pleurotus sajor-caju,” International Research Journal of Natural and Applied Sciences, vol. 1, no. 6, pp. 82–92, 2014.