Study of Oscillatory Flow Heat Exchanger Used in Hybrid Solar System Fitted With Fixed Reflectors

Yıl 2014, Cilt: 4 Sayı: 4, 893 - 900, 01.12.2014

VISHNU NARAYAN Palaskar SURESH PANDURANG Deshmukh

Öz

The hybrid photovoltaic/thermal or PV/T solar water systems are commercially unattractive due to its low concentration ratios, less combined efficiency, non-standardization of heat exchanger surfaces etc. The easy and cost effective technique to increase PV/T efficiency is to augment solar radiation on surface of module. This can be achieved by fitting reflectors to PV module of hybrid solar system. This paper provides design and performance analysis of oscillatory flow heat exchanger used in hybrid system fitted with flat aluminum sheet reflectors. The experimental results such as performance efficiencies of photovoltaic, thermal and combined PV/T system over a range of operating conditions are determined and assessed for latitude of Mumbai. The results of these experiments at solar radiation of 929W/m2 and water mass flow rate of 0.042 kg/sec with reflectors showed combined PV/T efficiency of 65.10 % with PV efficiency of 12.50 % and performance ratio of 93%. Recommendations for enhancing the performance of hybrid system with reflectors are discussed in the paper.

Anahtar Kelimeler

Low concentration ratio; non-standardization; combined PV/T efficiency; flat reflectors; oscillatory flow heat exchanger

Kaynakça

• Solanki C.S. Solar PV Electricity Solutions for Academic Campuses in India-A white paper. Department of Energy Science and Engineering, Indian Institute of Technology Bombay October 2010.
• Kostic Lj, T Pavlovic and Z Pavlovic. Influence of physical concentrators on energy efficiency of PV/T collector. Proceedings of the Tenth Annual Conference of the Materials Research Society of Serbia 2008: 115 (2009), No. 4. of flat aluminum
• Othman Mohd Yusof, Adnan Ibrahim, Kamaruzzaman Sopian, M AAlGhoul, Azami Zaharim. 2008. Simulation of different configuration of hybrid photovoltaic thermal solar collector (PVTS) designs. Selected Information Technology, Circuits, Systems and Signals, Applied Mathematics, Simulation and Modeling 2008, Marathon Beach, Attica, Greece. & [4] Hosseini,
• N Hosseini, H Khorasanizadeh.An
• experimental study of combining a photovoltaic
• system with a heating system.World Renewable
• Energy Congress Sweden, 8-13 May 2011, Linkoping, Sweden.
• Kamaruzzaman Sopian, Goh Li Jin, Mohd Yusof Othman, Saleem H. Zaidi, Mohd Hafidz Ruslan. Advanced absorber design for photovoltaic thermal (PV/T) Collectors. Recent Researches in Energy, Environment and Landscape Architecture; ISBN: 978- 1-61804-052-7.
• Tripanagnostopoulos Y, M Souliotis, R Battisti and A Corrado.Application aspects of hybrid PV/T solar systems. ISES Solar World Congress 2003 Göteborg, Sweden.
• Palaskar V N, Deshmukh S P. Design configurations of Hybrid solar Photovoltaic/Thermal collector technology a review. Proceeding of Indian National Science Academy (INSA) 2012; volume-78, issue-4, pp: 725-734.
• Palaskar V N, Deshmukh S P. A Critical Review on Enhancement in System Performance of a Hybrid Solar Flat plate PV/T Collector System. International Journal of Energy Science (IJES) 2013-b: Volume 3 Issue 6, pp: 395-403.DOI:10.14355/ijes.2013.0306.03.
• Sangani C S, Solanki C S. Experimental evaluation of V-trough (2 suns) PV concentrator system using commercial PV modules. Solar Energy Materials & Solar Cells 2007: 453–459.
• Burkhard Donald G, Strobel George L, Burkhard Daryl R. Flat-sided rectilinear trough as a solar concentrator: an analytical study. APPLIED OPTICS 1978; Volume 17, issue; pages: 1870-1883.
• Tripanagnostopoulos Y, M. Souliotis, R. Battisti and A. Corrado.Application aspects of hybrid PV/T solar systems. Physics Department, University of Patras, Patras 26500, Greece and Department of Mechanics and Aeronautics, University of Rome “La Sapienza”, Rome 00184, Italy.
• Djilali J. Rizk, and M. H. Nagrial. Impact of Reflectors on Solar Energy Systems.International Journal of Electrical and Electronics Engineering 2009.
• Palaskar V N, Deshmukh S P. Design and Performance Analysis of Reflectors attached to Commercial PV Module. International Journal of Renewable Energy Research (IJRER) 2014: Volume 4, Issue 1, pp: 240-245.
• Sukhatme S.P. and Nayak J. K.(2008), Solar Energy (Principles of Thermal collection and storage), Third Edition, Tata McGrew-Hill Publishing company Limited, New Delhi.
• Solanki C.S., Solar Photovoltaic (Fundamentals, Technologies and Applications), Second Edition, PHI Learning Pvt. LTD. New Delhi, 2011.
• Duffie John A and Beckman William A., Solar Engineering of Thermal Processes, A Wiley-Inter science Publication, John Wiley & S ons , New York.