Investigating the Suitability of Different Heat Storage Media in Double Exposure Box-Type Solar Cookers

A K Aremu, B O Adetifa

Abstract


A comparative evaluation of the performance of three phase change materials (PCM) used as heat storage media in double exposure box type solar cookers was carried out. Stearic acid, benzoic acid and palm olein oil were placed in each with another similar design solar cooker without PCM was used as control. These cookers were set up and the temperatures of charging and discharging of the PCM inside the cookers were monitored. The ambient temperature, solar intensity and wind speed of the location were equally monitored correspondingly. The maximum temperatures attained during charging by the heat storage materials were 89.2, 79.3 and 84.4 oC for benzoic acid, stearic acid and palm olein oil respectively. During heat discharge, the temperatures of the pots of the cookers after 3 hours were 52.4, 40.9, 61.7 and 53.4 oC for benzoic, control, stearic and palm olein oil cookers respectively. The temperatures of 1 kg of water after over 4 hours of discharging were 46.4, 40.6, 50.5 and 50.3 oC respectively. Cooking of 70 g of noodles was only achievable in the cooker with benzoic acid in 34 minutes. During charging, the cooker with benzoic acid performed best followed by the cooker with palm olein oil while the cooker with stearic acid performed least. On the other hand, the cooker with stearic acid was observed to perform best during discharging followed by palm olein oil and benzoic acid performed least.

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Abedin, A.H. and M.A. Rosen. (2011). A Critical Review of Thermochemical Energy Storage Systems. The Open Renewable Energy Journal. 4: 42-46. Abinaya, S.J.P. and S. Rajakumar. (2013). Performance of PCM and Cooking Vessel in Solar Cooking System. International Journal of Engineering Inventions. 2(6): 83-89. Adedipe, O. and M.S. Abolarin. (2011). Design and Implementation of a Novel Solar Cooker. Innovations in Science and Engineering. 1: 97-103. Anirban, G; Jan, K; Stefan, G. and S. Llewellyn. (2010). Estimation of Biomass Heat Storage Using Thermal Infrared Imagery: Application to a Walnut Orchard. Boundary-Layer Meteorol. 137: 333–342. Arabacigil, B; Yuksel, N. and A. Avci. (2015). The Use of Paraffin Wax in a new Solar Cooker with Inner and Outer Reflecctors. Thermal Science. 19(5): 1663-1671. Aremu, A.K. and R. Akinoso. (2013a). Potential Use of Box-Type Solar Cooker in Developing Countries. The Journal of the Association of Professional Engineers of Trinidad and Tobago. 41(1): 11-17. Aremu, A.K. and R. Akinoso. (2013b). Use of solar cooker in Nigeria. International Food Research Journal. 20(5): 2881-2886. Buddhi, D. and I.K. Sahoo. (1997). Solar Cooker with Latent Heat Storage: Design and Experimental Testing. Energy Convers. Mgms. 38(5): 493-498. Buddhi, D; Sharma, S.D. and A. Sharma. (2003). Thermal performance evaluation of a latent heat storage unit for late evening cooking in a solar cooker having three reflectors. Energy Conversion and Management. 44: 809-817. Chandra, J.S; Pradyumna, A.K; Teja, A.P. and A.S. Babu. (2011). Gitam Solar Cookers. Climate Healers Available at: www.engineeringforchange.org/uploads/activity/22 /22/447/1325007143632/PremTeja.pdf [Accessed 1 October, 2014]. Chen, C.R; Sharma, A; Tyagi, S.K. and D. Buddhi. (2008). Numerical Heat Transfer Studies of PCMs used in a Box-Type Solar Cooker. Renewable Energy. 33(5): 1121-1129. Chu, I; Gandhi, S; Green, E; He, Q. and C. O'Brien. (2012). New Generation Solar Cooker for Developing Countries. Penn Engineering Available at: www.me.upenn.edu/senior-design/2012/papers/tea m10.pdf [Accessed 20 July, 2014]. Ekechukwu, O.V. and Ugwuoke, N.T., 2003. Design and Measured Performance of a Plane Reflector Augmented Box-Type Solar Energy Cooker. Renewable Energy, 28, pp.1935- 1952. Foong, C.W. (2011). Solar Oven with Heat Storage. Available at: http://contest.techbriefs.com/2011/entries/sustainab le-technologies/1915-solar-oven-with-heat-storage [Accessed 10 June, 2014]. Gavisiddesha, S.P; Revankar, P.P. and M.B. Gorawar. (2013). Evaluation of Thermal Performance of Paraboloid Concentrator Solar Cooker. IJIRTS. 1(3): 58-65. Goodier, R. (2012). Ten Solar Cookers that Work at Night. Available at: www.engineeringforchange.org/news/2012/02/04/t en_solar_cookers_that_work_at_night.html [Accessed 18 February, 2014]. Hussein, H.M.S; El-Ghetany, H.H. and S.A. Nada. (2008). Experimental Investigation of Novel Indirect Solar Cooker with Indoor PCM Thermal Storage and Cooking Unit. Energy Conversion and Management. 49: 2237-2246. Kenisarin, M. and K. Mahkamov. (2007). Solar Energy Storage using Phase Change Materials. Renewable and Sustainable Energy Reviews. 11(9): 1913-1965. Mohammed, I.L; Rumah, U.J. and A.T. Abdulrahim. (2013). Performance Testing Of a Truncated Pyramid Solar Thermal Cooker. IJERA. 3(4): 1174-1178. Muthusivagami, R.M; Velraj, R. and R. Sethumadhavan. (2010). Solar Cookers with and without Thermal Storage. Renewable and Sustainable Energy Reviews. 14(2): 691-701. Nahar, N.M; Sharma, P. and G.R. Chaudhary. (2009). Processing of Agricultural Products in Solar Cooker for Income Generation. In Hedrick, B., ed. International Solar Food Processing Conference. Indore, India, 2009. International Solar Energy Society. Rahul, R; Tiwari, A. and S. Chakravarty. (2011). Team Anshuk - Solar Cooker. Climate Healers Available at: www.engineeringforchange.org/uploads/activity/22 /22/448/1325007307434/SudarshanChakrvarthy.pd f [Accessed 23 June, 2014]. Rathod, M.K. and J. Banerjee. (2013). Thermal Stability of Phase Change Materials used in Latent Heat Energy Storage Systems: A Review. Renewable and Sustainable Energy Reviews. 18: 246-258. Rikoto, I.I. and I. Garba. (2013). Comparative Analysis on Solar Cooking Using Box Type Solar Cooker with Finned Cooking Pot. International Journal of Modern Engineering Research (IJMER). 3(3): 1290-1294. Saxena, A; Lath, S. and V. Tirth. (2013). Solar Cooking by Using PCM as a Thermal Heat Storage. MIT International Journal of Mechanical Engineering. 3(2): 91-95. Schwarzer, K; Vieira da Silva, E.M. and L.L.P. Santana. (2006). Recent Developments of the Solar Cooking System with or without Heat Storage for Families

and Institutions. In Solar Cookers and Food Processing International Conference. Granada, 2006. Solar Cooker International. Sedighi, M. and M. Zakariapour. (2014). A Review of Direct and Indirect Solar Cookers. Sustainable Energy, 2(2): 44-51. Sharma, S.D. (2006). Solar Cooker for Evening / Night Cooking Using Solar Heat Storage Materials. In International Conference on Solar Cookers and Food Processing. Granada, 2006. Solar Cooker International. Sharma, S.D; Buddhi, D.S. and R.L. Sharma. (2000). Design development and performance evaluation of a latent heat unit for evening cooking in a solar cooker. Energy Conversion and Management. 41: 1497-1508. Sharma, S.D; Iwata, T; Kitano, H. and K. Sagara. (2005). Thermal Performance of a Solar Cooker Based on Evacuated Tube Solar Collector with a PCM Storage Unit. Solar Energy. 78(3): 416-426. Sharma, S.D; Kitano, H. and K. Sagara. (2004). Phase Change Materials for Low Temperature Solar Thermal Applications. Res. Rep. Fac. Eng. Mie Univ. 29: 31-64. Sharma, S.D. and K. Sagara. (2005). Latent Heat Storage Materials and Systems: A Review. International Journal of Green Energy. 2: 1-56. Sharma, A; Tyagi, V.V; Chen, C.R. and D. Buddhi. (2009). Review on Thermal Energy Storage with Phase Change Materials and Applications. Renewable and Sustainable Energy Reviews. 13: 318–345. Uhuegbu, C.C. (2011). Design and Construction of a Wooden Solar Box Cooker with Performance. J. Basic. Appl. Sci. Res. 1(7): 533-538. Xiao, X. and P. Zhang. (2014). Experimental Investigation on Heat Storage/Retrieval Characteristics of a Latent Heat Storage System. Heat Transfer Engineering, 35(11-12): 1084-1097.