Experimental Study of Air Ejector Performance to Cool Agricultural Products

Jawad, Hassan S.; Abdul Ghafoor, Qusay J.

doi:10.30684/etj.v39i9.2105

	Experimental Study of Air Ejector Performance to Cool Agricultural Products
Engineering and Technology Journal
Article 13, Volume 39, Issue 9, September 2021, Pages 1437-1444 PDF (977.39 K)
Document Type: Research Paper
DOI: 10.30684/etj.v39i9.2105
Authors
Hassan S. Jawad^* ; Qusay J. Abdul Ghafoor
Mechanical Engineering Department- University of Technology, Baghdad, Iraq.
Abstract
In this research, an ejector was designed and manufactured from brass metal as part of a cooling system to cool agricultural products, work of ejector is based on the Venturi principle. The primary fluid is air and steam of product is the secondary fluid, used the primary pressure (1, 8, 1) bar for the purpose of conducting the experiment. The ejector was manufactured from a number of interconnected parts to give the final shape. The performance of the ejector was analyzed theoretically, through operating of system evaporation of water take place in vessel leads to cooling product at change operation condition and the examination, it was reached: a- The cooling efficiency of the product increases by increasing the primary pressure. b- The cooling efficiency of the product increases by decreasing the mass of the product. c- The loss weight of the product increases by increasing the primary pressure.
Highlights
The ejector is a device used in the practical applications because it is simple, easy to use, low in cost, simple design and does not contain moving parts. It is used to pump high-temperature gases, in air conditioning systems and drying. The current method is used to cool agricultural products after harvesting and before storage.
Keywords
Cooling product; Design parameters; Ejector; Experimental work; Geometry Parameters; Performance analysis

References
[1] A. Maqsood, “A study of subsonic air-air ejectors with short bent mixing tubes,” Ph.D. Thesis, Mechanical and Materials Eng. Dept., Univ. of Queen’s, Canada, 2008. [2] A. Al-Nuaimi1, M. Worall, S. Riffat, “Preliminary Study of effects of primary and back pressure on performance of supersonic ejector driven by compressed air,” 17^thInternational Conference on Sustainable Energy Technologies, Wuhan, China, 21^st - 23^rd of August 2018. [3] P. Watanawanyooa, and S. Chaitepb, “Performance evaluation of a water ejection type in vacuum drying system,” Journal Energy Procedia, Vol. 52, pp. 588-597, 2014. [4] J.J. Schwegman, R. Stefan, “Basic cycle development techniques for lyophilized products,” https://www.scribd.com/document/252192875/Basic-Cycle-Development-Techniques-for-Lyophilized-Products, 2009. [5] M. A. Saad, “Compressible fluid flow,” 2nd Edition, Englewood Cliffs, 1985. [6] B.J. Huang, J.M. Chang, C.P. Wang, V.A. Petrenko, “A 1-D analysis of ejector performance,” International journal of refrigeration, International Journal of Refrigeration, Vol. 22, pp. 354–364, 1999. [7] J.M.A. Dandachi, “Steam air ejector performance and its dimensional parameters,” Ph.D. Thesis, Chemical Eng. Dept., Univ. of Loughborough, London, 1990. [8] D. M., Parikh, “Vacuum drying: basics and application,” Journal of Chemical Engineering, Vol. 122(Issue 4), pp. 48-54, 2015. [9] P. V. Eeden and D. Ercolani, “A Method for prediction of Gas/Gas ejector performance,” Impiantistica Italiana, p. 76, 2013. [10] Q. J. Abdul Ghafoor, “Design and manufacture of an ejector as part of a cooling system,” Master thesis, Mechanical Eng. Dept. Univ. of Technology, 1992.
Statistics Article View: 300 PDF Download: 294