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This work presents a Computational and experimental study of transient heat transfer in fluid flow through porous media. The process of heat transfer and fluid flow through porous media is of interest to a wide range of applications of such as reactors, separators and dryers etc. Porous media used here is packed bed of spheres. The experimental arr...
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Citations
... Alumina a metal in its raw for was used as a material to design this system. Benjamin et al. [34] have designed a storage device that stores thermal energy. This system was exclusively made using high grade carbon steel. ...
The ever-increasing global need for energy makes it unavoidable to support the use of essential coffers (box or cabin). The sun is one of the most abundant and almost indestructible energy sources in our world. The goal of this study is to compare three alternative materials in order to improve or maximize the efficiency and other characteristics of the solar collector. Aluminum- 6061, Stainless Steel – 304 and Mild Steel - EN24 are the three materials. Solar collectors with a parabolic trough are physical devices with an interior covering of mirrors or reflecting materials. The collector is shaped like a concave surface. These troughs have a single axis, which means they may be rotated. These troughs have a single axis, which means they can only rotate in one direction. The east–west orientation is the most common and typical direction for solar collector placement. These collectors are also used in the north–south direction in various parts of the world and by some homes. The incident radiation on the collector heats a specific fluid as it flows through the tubes or pipes of the collector. Because they are in the shape of a parabola, solar collectors are also known as parabolic trough collectors. Despite the fact that the interior surface is coated with reflecting materials, mirrors are still used. The collector's form aids in the focus of falling light or radiation on the tubes. The shape of conventional solar collectors and parabolic solar collectors is what distinguishes them. One of the solar collector's most important qualities is this distinction. Mechanical and geometrical characteristics are among them. This reduces, if not completely eliminates, losses in the collection. These characteristics enable solar collectors to work at higher temperatures.
... Benjamin et al. [17] has a waste heat recovery system using alumina energy storage materials. Benjamin et al. [18] has energy storage materials using the high carbon steel in the heat exchanger. Benjamin et al. [19] have experimentally done on the heat exchanger and five-factor five-level using design of experiments. ...
The studies of thermal energy storage material Alumina (Al2O3) as a function of average bed temperature. Aluminum oxide is engineering properties and uses commercially available. Alumina is one of the most cost-effective and widely used materials in the family of ceramics. The raw materials, from which this high-performance technical grade ceramic is made aluminum oxide, commonly referred to as alumina high strength characteristics of the material. Aluminum oxide is used in the energy storage of heat exchanger. The Al2O3 pebbles are 6 mm to 14 mm and are randomly dumped and packed in a 450 mm long hollow tube of 45 mm inner diameter. The tube was fully covered the asbestos ropes to reduce the heat loss. Hot air from a source was used to flow in the packed bed at various inlet conditions of velocity varying from 2 to 3 m/s. The spheres were heated from an inlet temperature of 32 °C. The experimental work was done in the heat exchanger is given to air in the multistage compressor and diesel engine exhaust. Waste heat energy was stored in the pebbles. The experimental results indicated that the increased porous media temperature increased the outer surface temperature, increased the heat transfer rate with an increase in the average bed temperature of 342 K to 402 K. The entire results obtained by using experimentation were cross verified using Finite Element Analysis modeling. Finally the results of both experimental and Finite Element Analysis Modeling were found to be in good co-relation.
