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Arunkumar, S.
- Experimental and Numerical Analysis on Heat Transfer Characteristics of Shoe Brush-Shaped Fins
Abstract Views :233 |
PDF Views:87
Authors
Affiliations
1 School of Mechanical Engineering, SASTRA University, Tirumalaisamudram, Thanjavur 613 401, IN
1 School of Mechanical Engineering, SASTRA University, Tirumalaisamudram, Thanjavur 613 401, IN
Source
Current Science, Vol 106, No 10 (2014), Pagination: 1414-1420Abstract
Experiments were on a shoe-brush-shaped fin consisting of a single bunch of splayed metal wires of circular cross-section from copper base plate. The fin was fabricated and its heat transfer characteristics were studied through experiments and numerical simulation. Fabrication was done through sand casting and the product was machined for required dimensions and surface finish. Numerical studies were done using ANSYS Fluent 3D. It can be inferred from the experiments and numerical studies that the fabricated fin maintains a lower base plate temperature than the rectangular flat fin and cylindrical pin fin for the same heat transfer rate, material and exposed area.Keywords
Forced Convection, Heat Transfer, Shoe Brush Fins, Numerical Simulation.Full Text
- Design and optimization of solar parabolic trough collector with evacuated absorber by grey relational analysis
Abstract Views :195 |
PDF Views:83
Authors
S. Arunkumar
1,
K. Ramesh
1
Affiliations
1 Department of Mechanical Engineering, Government College of Technology, Coimbatore 641 013, IN
1 Department of Mechanical Engineering, Government College of Technology, Coimbatore 641 013, IN
Source
Current Science, Vol 122, No 4 (2022), Pagination: 410-418Abstract
Solar energy that contains bright heat and light from the sun is often controlled using modern technology such as photovoltaic, solar heating, artificial photosynthesis, solar architecture and solar thermal electricity. This study concerned with an experimental analysis of solar parabolic trough collector. The sunlight is reflected from the parabolic trough surface and focused on the evacuated absorber tube. The trough is usually aligned to the N–S axis and can be rotated normally according to the sun position from east to west. We have studied the potential of a solar thermal system for hot-water generation. The parabolic trough concentrator was made of galvanized sheet metal on which solar reflective films were pasted. The heat transfer fluid, viz. water runs through the absorber tube and absorbs concentrated heat energy. It has been designed with principal focus 0.1 m from the vertex so that the receiver heat loss is minimized. Data were collected on water inlet temperature, outlet temperature of the heat transfer fluid, solar radiation and water flow rate (days) during March to May 2019 at Coimbatore, Tamil Nadu, India. Also, the processing parameters were optimized because they are the key factors affecting the performance of the solar collector. Grey relational analysis was used to solve the optimization. Through confirmatory experiments, the input variables such as time, angle of tracking and solar radiation, as well as output variables such as inlet temperature, outlet temperature and efficiency were obtained, and the optimal conditions were verified. A suitable choice of input parameters such as tracking angle of 120° provides a high efficiency rate at 2 pm for March, April and MayKeywords
Evacuated absorber, grey relational analysis, parabolic trough collector, performance analysis, solar energy.Full Text
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