Abstract
This research work reports the development, construction and study of the performance of the conical shaped concentrator made from fabricated iron sheet of thickness 2mm. The inner side of the cone shape was line with strips of plane mirror cemented to the surface by the help of araldite mixed with sawdust. The concentrator has an aperture of 8050.20cm2 while the two solar absorber used for the study has surface area 790.60cm2 and 720.50cm2 with the concentration ratio being 9.50 and 10.60 respectively. The conical solar concentrator was tested under various operation condition, such as; different concentration ratio, static condition of the absorber fluid temperature against local time of the day showed that higher temperatures of the fluid were obtained on bright sunny days when the collector received beam radiation (highest temperature recorded =166oC) and a rapid decline of the fluids temperatures when a cloudy interception of the sun occurred.
Highlights
Fossil fuel coal, gas, and oil still remain the conventional source of energy utilized by man for domestic and industrial uses
The conical solar concentrator was tested under various operation condition, such as; different concentration ratio, static condition of the absorber fluid temperature against local time of the day showed that higher temperatures of the fluid were obtained on bright sunny days when the collector received beam radiation and a rapid decline of the fluids temperatures when a cloudy interception of the sun occurred
The energy crisis which recently resulted from high energy demand coupled with rising cost of crude oil which accounted for the largest convectional energy source, has led to a considerable interest in solar energy for additional source of energy in highly industrialized and some developing countries
Summary
Gas, and oil still remain the conventional source of energy utilized by man for domestic and industrial uses These sources of energy came indirectly from the sun in that they were formed some thousands of years ago from decayed plants and animals that once depended on the sun for life and growth. The energy crisis which recently resulted from high energy demand coupled with rising cost of crude oil which accounted for the largest convectional energy source, has led to a considerable interest in solar energy for additional source of energy in highly industrialized and some developing countries This same energy crisis has prompted research growth in the area of sun. The development and construction of the conical concentrator with locally available materials are presented in the following subsections
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