| dc.description.abstract | A hybrid photovoltaic (PW) solar system combines simultaneous canversion of the
absorbed solar radiation into electricity and heat. In this study the design of an
experimental PWdual systern, both air and water circulation with modifications in the
air channel is presented. A thin metallic sheet (TMS) inside the air channel and painted
black ribbed surfaces at the bottom of the air channel are placed. For obsertting the
variations of heat transmittance with change of the shape of the ribs four experimental
setups with a Trapezoidal, a Saw tooth forward, a Saw tooth baclauard ribbed surfaces
and a flat plate have been used, Natural convection is applied instead of forced
convection to increase the system net electrical output & thereby the overall system
fficiency. All setups are of the same capacity, projected area and water heat extraction
method and average depth. Performance study is carried out during the months of March
to June, 2012 at I(JT campus, Gazipur, Bangladesh. Significant performance has been
obtained with the above stated modifications. Natural convection is allowed to take place
instead of fluid conyection. Results obtained in this study have been compared with
available information in the literature. | en_US |
