DOIONLINE 
DOIONLINE Publish In |
International Journal of Mechanical and Production Engineering (IJMPE)-IJMPE |
 Journal Home Volume Issue |
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Issue |
Volume-4,Issue-6 ( Jun, 2016 ) | |||||||||
Paper Title |
Geometric Optimization Of High Temperature Shell And Tube Latent Heat Thermal Energy Storage | |||||||||
Author Name |
S. Saeed Mostafavi Tehrani, Gonzalo Diarce, Robert A. Taylor, Pouya Saberi, Ardalan Shafiei Ghazani | |||||||||
Affilition |
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW, Australia Escuela de Ingeniería de Bilbao, University of the Basque Country UPV/EHU, Rafael Moreno Pitxitxi 2, Bilbao 48013, Spain School of Mechanical and Manufacturing Engineering, K.N. Toosi University of Technology, Tehran, Iran Mechanical Engineering Department, Sharif University of Technology, Tehran, Iran | |||||||||
Pages |
120-126 | |||||||||
Abstract |
A simple geometry shell and tube heat exchanger provides a straightforward design for near-term integration of latent heat thermal energy storage systems in concentrated solar thermal plants, but currently there is no literature available for this configuration in the 286-565 ˚C temperature range. Therefore, the objective of this work is to evaluate the potential of this configuration for CST-tower plants by proposing a proper design method. The work has been done by optimizing the main geometric parameters involved along with considering a market ready phase change material (H500 salt). The optimization consisted of fixing the PCM volume while varying the other geometric parameters simultaneously over a wide range. The goal was to achieve the highest amount of total stored/delivered energy in a certain amount of time with a minimum heat transfer surface area. For the selected PCM, the optimum area was found 36-63 m2.GJ-1 (0.12-0.22 m2.kWhth - 1). The storage charging and discharging efficiency for the selected PCM over a cycle of continuous charging and discharging were found ~99% and 85%, respectively. The results also imply that the shell and tube LHTES system is technically competitive with the conventional two-tank molten salts because of its high efficiency. Keywords— High temperature, Phase change material, Optimization, Shell and tube tank | |||||||||
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