Design and Characterization of a Hybrid Flat Plate Photovoltaic-Thermal System

  • Wycliffe Ondara Nyariki Institute of Nuclear Science and Technology,College of Architecture and Engineering University of Nairobi
  • David M. Mulati Institute of Nuclear Science and Technology,College of Architecture and Engineering University of Nairobi
  • David M. Maina Institute of Nuclear Science and Technology,College of Architecture and Engineering, University of Nairobi

Abstract

A variety of solar energy systems have been designed to harness sun power to produce both thermal and electric energy. Hybrid photovoltaic /thermal (PV/T) solar systems can concurrently provide electric energy and heat, thereby ensuring a higher conversion rate of the absorbed solar radiation. With proper designing, the PV/T systems can minimize the temperature effects on efficiency of a PV module by cooling it. In this paper, we present TRNSYS simulation results for a hybrid PV/T system for domestic water applications for a typical Kenyan family of five. Further, the results of the constructed PV/T system as predicted by the simulations are outlined and discussed. The PV/T system was constructed from polycrystalline silicon module available in the Kenyan market and coupled with water heat extraction unit. The resultant PV/T system was found to meet 47% of the hot water demand for family of five. With a payback period of 5.2 years, the PV/T system gives a lifetime cost saving of about Kshs.85941. The combined system efficiency range is between 37 and 62%. These figures are quite promising and they indicate that the PV/T system can be economically viable for a typical Kenyan household of five persons especially when electricity and hot water are required for domestic applications.
Published
Jun 22, 2016
How to Cite
NYARIKI, Wycliffe Ondara; MULATI, David M.; MAINA, David M.. Design and Characterization of a Hybrid Flat Plate Photovoltaic-Thermal System. Proceedings of Sustainable Research and Innovation Conference, [S.l.], p. 262-268, june 2016. ISSN 2079-6226. Available at: <http://sri.jkuat.ac.ke/ojs/index.php/proceedings/article/view/448>. Date accessed: 23 nov. 2017.

Keywords

Hybrid; Photovoltaic; Solar Thermal.