Effect of air flow rate and plant type on the cost and efficiency of the performance of the indirect solar dryer
Paper Details
Effect of air flow rate and plant type on the cost and efficiency of the performance of the indirect solar dryer
Abstract
The solar dryer is designed and manufactured to dry some medical plants at the Research Center for Energy and Environment of the Ministry of Industry and Minerals. This experiment was included two factors, where three levels speeds for the fan and three kind of medical plants. Factorial experiment within CRD with three replications was used to study the effect of the dried substance type ,air flow rate and their overlap with studied parameters. The results indicated that the increased intensity of the fallen solar radiation resulted in a lower efficiency of the solar dryer from 17.95 % to 12.18 %. Increased air flow rates reduce the water mass from 0.21 kg to 0.185 kg during the day as a result of lower temperatures within the drying room and thus a decrease in the efficiency of the dryer. Increasing speed leads to lower temperatures, which in turn reduces the extraction of moisture from the plant and thus decreases the moisture mass of the vaporist. The binary overlap between substance type and air flow rate has had a moral effect on most of them efficiency drying room, rate of drying, efficacy of the medicinal plant and daily costs. The alcohol extract of ginger was more effective against the growth of E. coli bacteria than the rest of the extracts where the diameters ranged 20-25 mm. The alcohol extract of the pepper was effective against the growth of the Staphy.aureus bacteria better than the rest of the extracts where the diameters ranged (11-17) mm.
Khudair, Alaa Mohsen, Jassim Mahdi al-Asadi. 2011. Calculating thermal efficiency for two different designs of solar heaters. Basra Research Magazine (Science) No. 38, Part 1. b: 11-14.
AL-Rawi, Chkravarty. 1998. Medical plants of Iraq. Second edition. Al-Yiltha press, Baghdad. 74, 92-94.
Sreekumar A, Manikantan PE and Vijayakumar KP. 2008. Performance of indirect solar cabinet dryer. Energy Conversion and Management 49(6), 1388-1395.
SAS. 2012. Statistical Analysis System. User’s Guide. Statistical. Version 9.1 third edition SAS. Institute Incorporated Cary North Carolina United States of America.
Senadeera W, IS Kalugalage. 2004. Performance evaluation of an affordable solar dryer for crops. Proceedings of Biennial Conference of the Society of Engineers in Agriculture. Dubbo, 14-16 Australia www.energy.gov.lk/research/attachment/DUBBOw
El-Amin O, Ismail MA, El-Fadi I and Lueke W. 2006. Design and construction of a solar dryer for mango slice. Department of Agriculture Engineering. University of Zalingei, Sudan.
Atia M F. 2016. Dynamics and Control of Solar Milk pasteurization processes. Philosophy doctor Thesis, Department of Agricultural Engineering, Faculty of Agriculture, Ain Shams University, Egypt.
Khalil EJ, AJ Khalifa and TA Aassen. 2007. Testing of the performance of a fruit and vegetable solar drying in Iraq. The Ninth Arab International Conference on Solar Energy. 209(1-3), 163-170.
Fudholi, AK Sopian, B Bakhtyar, M Gabbasa, MY Othman and MH Ruslan. 2015. Review of solar drying systems with air based solar collectors in Malaysia. Renewable and Sustainable Energy Reviews. 51, 1191-1204.
Bolaji BO. 2005. Performance evaluation of a simple solar dryer for food preservation. Proceedings of 6th Annual Engineering Conference of School of Engineering and Engineering Technology, Federal University of Technology, Minna, Nigeria., pp. 8-13.
Youcef-Ali S , Messaoudi H, Desmons JY, Abene A and Le Ray M, 2001. Determination of the average coefficient of internal moisture transfer during the drying of a thin bed of potato slices. Journal Food Engineering. 48(2), 95-101.
Joshi CB, MB Gewali and RC Bhandari. 2005. Performance of solar drying system: A case study of Nepal, Journal of the Institution of Engineers (India), 85, 53-57.
Usub T, N Poomsa-ad, L Wiset and C Lertsatitthankorn. 2007. Solar drying of silkworm chrysalis using a triangle solar tunnel drier. Renewable Energy Technonlog www.energy-based.nrct.go
Dilip J. 2007. Modeling the performance of the reversed absorber with packed bed thermal storage natural convection solar crop dryer. Journal of Food Engineering. 78(2), 637-647.
Akpinar EK. 2010. Drying of mint leaves in a solar dryer and under open sun: modelling, performance analyses. Energy conversion and management, 51(12), 2407-2418.
Bukola OB and PO Ayoola. 2008. Performance evaluation of Mixed-Mode Solar Dryer. Department of Mechanical Engineering, University of Agriculture, Nigeria AU J.T. 11(4), 225-231.
Morad MM, El-Shazly MA, Wasfy KI and El-Maghawry HA. 2017). Thermal analysis and performance evaluation of a solar tunnel greenhouse dryer for drying peppermint plants. Renewable Energy, 101, 992-1004.
Hussein Abbas Jebur, Hawraa Flaeih Al-Maeny (2018), Effect of air flow rate and plant type on the cost and efficiency of the performance of the indirect solar dryer; JBES, V12, N2, February, P68-76
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