Volumetric solar absorber and performance characteristics

Abstract

Volumetric solar absorption system accommodating the absorber plate in a rectangular channel is investigated. The influence of the location of the absorbing plate on the heat transfer and hydrodynamic characteristics are examined in the channel. Phase change material (Lauric acid) of 5% concentration is used to increase the thermal storage capacity of the working fluid and water is incorporated as the carrier fluid in the channel. Thermal performance and pump power loss parameters are introduced to assess the thermal performance of the volumetric solar absorption system. The findings revealed that thermal performance parameter attains the highest value for the absorber plate location at the center and bottom of the channel. The pump power loss parameter becomes the highest for the absorber plate location at the mid-height of the channel

Keywords

• Solar Harvesting, Volumetric Absorber

Volumetric solar absorber and performance characteristics

Abstract

Keywords

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References

1. A. Veeraragavan, A. Lenert, B.S. Yilbas, S. Al-Dini, E. Wang, Analytical model for the design of volumetric solar flow receivers. Int. J. of Heat and Mass Transfer, Vol. 55, n 4, pp. 556-564, 2012.
2. P. Charunyakorn, S. Sengupta, and S.K. Roy, Forced convection heat transfer in microencapsulated phase change material slurries : flow in circular ducts, Int. J. Heat Mass Transfer, Vol. 34(3), pp. 819-833, 1991.
3. S.K. Roy, and S. Sengupta, An evaluation of phase change microcapsules for use in enhanced heat transfer fluids, International communications in heat and mass transfer, 18(4), pp. 495-507, 1991.
4. E. Choi, Y.I. Cho, and H.G. Lorsch, Forced convection heat transfer with phase-change-material slurries:turbulent flow in a circular tube, Int J. Heat Mass Transfer, 37(2), pp. 207-215, 19 M. Goel, S.K. Roy and S. Sengupta, Laminar forced convection heat transfer in microcapsulated phase change material suspensions, Int. J. of Heat and Mass Transfer, Vol. 37(4), pp. 593-604, 1994.
5. S.K> Roy, and B.L. Avanic, Laminar Forced Convection Heat Transfer With Phase Change Material Emulsions, Int. Comm. Heat Mass Transfer, 24(5), pp. 653-662, 1997,.
6. B. Chen, X. Wang and Y. Zhang, Experimental research on laminar flow performance of phase change emulsion, Applied Thermal Engineering, 26, pp. 1238-1245, 2006.
7. X. Wang,J. Niu, Y. Li, X. Wang, B. Chen, R. Zeng., Q. Song and Y. Zhang, Flow and heat transfer behaviors of phase change material slurries in a horizontal circular tube, Int. J. of heat and mass transfer, 50(13-14), pp. 2480-2491, 2007.
8. O.S. Kaleem and B.S. Yilbas, Thermal characteristics of volumetric solar absorption system incorporating absorber plate in the channel flow, Int. J. of Energy Research, DOI: 1002/er.3063, 2013.

9. O.K. Siddiqui and B.S. Yilbas, Solar absorption heating in horizontal channel: influence of absorbing plate location on thermal performance, Energy Conversion and Management Vol. 74 , pp. 140-148, 2013.
10. R. Sabbah, M.M. Farid, and S. Al-Hallaj, Micro-channel heat sink with slurry of water with micro-encapsulated phase change Engineering, Vol. 29, pp. 445-454, 2008.
11. J.C. Maxwell, A Treatise on Electricity and Magnetism, Vol. 1, Dover Publications, New York, 1954.
12. X. Wang, J. Niu, Y. Li, X. Wang, B. Chen, R. Zeng, Song Q., and Zhang Y., Flow and heat transfer behaviors of phase change material slurries in a horizontal circular tube, International journal of heat and mass transfer, 50(13-14), pp. 2480-2491, 2007.
13. R. Blickensderfer, Solar Absorbers—Selective Surfaces, in: Electric Refractory Materials, 2000
14. F. Mammadov, Study of Selective Surface of Solar Heat Receiver, Int. J. of Energy Engineering, Vol. 2, pp. 138-144, 20 Product Documentation, Fluent 12.1., ANSYS Inc., 2011.