Performance of a solid state hydrogen storage device with finned tube heat exchanger
| Autor: | Anurag Singh, S. Srinivasa Murthy, M. Prakash Maiya |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 05 social sciences Metallurgy Plate heat exchanger Energy Engineering and Power Technology 02 engineering and technology Heat sink 021001 nanoscience & nanotechnology Condensed Matter Physics Concentric tube heat exchanger Fuel Technology 0502 economics and business Heat spreader Heat exchanger Heat transfer Plate fin heat exchanger 050207 economics Composite material 0210 nano-technology Shell and tube heat exchanger |
| Zdroj: | International Journal of Hydrogen Energy. 42:26855-26871 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.06.071 |
| Popis: | In the present study, a cylindrical solid state hydrogen storage device embedded with finned heat exchanger is numerically investigated. The finned heat exchanger consists of two `U' shaped tube and circular fins brazed on the periphery of the tubes. 1 kg of LaNi5 alloy is filled inside the device and 80 g of copper flakes is evenly distributed in between the fins to increase the overall thermal conductivity of the metal hydride. Water is used as heat transfer fluid. Absorption performance of the storage device is investigated at constant hydrogen supply pressure of 15 bar and cooling fluid temperature and velocity of 298 K and 1 m/s respectively. At these operating conditions, the required charging time is found to be around 610 s for a storage capacity of 12 g (1.2 wt%). The study is extended to examine the influence of different heat exchanger configurations based on number of fins, thickness of the fins, diameter of tubes, holes in fins, amount of copper flakes etc. An analysis for the same weight of the heat exchanger assembly has also been carried out by changing the number of fins at different thickness and pitch. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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