Showing papers by "Kamaruzzaman Sopian published in 2000"
TL;DR: In this paper, a double pass photovoltaic thermal solar collector suitable for solar drying applications has been developed and tested, and a steady state closed form solution to determine the outlet and mean photiovoltaic panel temperature has been obtained for the differential equations of the upper and lower channels of the collector.
168 citations
01 Jan 2000
TL;DR: In this paper, the design and performance of two types of solar assisted drying systems is presented, where the V-groove solar collector is used in the first dryer and the double-pass solar collector with porous media in the lower channel is used for the second dryer.
Abstract: The design and performance of two types of solar assisted drying systems is presented. The V-groove solar collector is used in the first dryer and the double-pass solar collector with porous media in the lower channel is used in the second dryer. The drying chambers are of the cabinet and flat bed types for the former and later respectively. Several agricultural produces have been used in the first dryer namely chilies and green tea. Ground oil palm fronds used animal feedstock is dried using the second dryer. The lower channel of the double-pass solar collector are filled up with porous media and acted as a storage medium for the system. Hence, the second solar dryer is suitable for higher temperature drying of agricultural produce. At a solar radiation level of 700 W/m2 and ambient temperature of 30 °C, the outlet temperatures are 60 °C and 80° C for the first and second dryers respectively.
5 citations
01 Jan 2000
TL;DR: This chapter describes the development of design tools for a hot and humid region and the nomographs, protractors, charts, and tables developed primarily for overcast and clear skies.
Abstract: Publisher Summary Most of the established daylighting tools are being developed for the overcast or clear sky with the exception of a few state-of-the-art powerful graphic tools that can render almost realistic visuals for any type of sky. However, most of these sophisticated tools are yet to reach the normal daylight designer. This chapter describes the development of design tools for a hot and humid region. Simple daylight footprints, iso-lux charts, and hourly illuminance charts produced for intermediate skies, which dominate hot and humid regions, are also presented. It is noted that the numerical analysis tools and computer softwares require local climatic data, and site-specific sky conditions for input parameters. The nomographs, protractors, charts, and tables are developed primarily for overcast and clear skies.