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Unitized Regenerative Fuel Cell System Gas Storage-Radiator Development (en Inglés)
Nasa Technical Reports Server (Ntrs)
(Autor)
·
Kenneth a. Burke
(Autor)
·
Ian Jakupta
(Autor)
·
Bibliogov
· Tapa Blanda
Unitized Regenerative Fuel Cell System Gas Storage-Radiator Development (en Inglés) - Burke, Kenneth a. ; Jakupta, Ian ; Nasa Technical Reports Server (Ntrs)
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Origen: Estados Unidos
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Reseña del libro "Unitized Regenerative Fuel Cell System Gas Storage-Radiator Development (en Inglés)"
High-energy-density regenerative fuel cell systems that are used for energy storage require novel approaches to integrating components in order to preserve mass and volume. A lightweight unitized regenerative fuel cell (URFC) energy storage system concept is being developed at the NASA Glenn Research Center. This URFC system minimizes mass by using the surface area of the hydrogen and oxygen storage tanks as radiating heat surfaces for overall thermal control of the system. The waste heat generated by the URFC stack during charging and discharging is transferred from the cell stack to the surface of each tank by loop heat pipes, which are coiled around each tank and covered with a thin layer of thermally conductive carbon composite. The thin layer of carbon composite acts as a fin structure that spreads the heat away from the heat pipe and across the entire tank surface. Two different-sized commercial-grade composite tanks were constructed with integral heat pipes and tested in a thermal vacuum chamber to examine the feasibility of using the storage tanks as system radiators. The storage tank-radiators were subjected to different steady-state heat loads and varying heat load profiles. The surface emissivity and specific heat capacity of each tank were calculated. In the future, the results will be incorporated into a model that simulates the performance of similar radiators using lightweight, spacerated carbon composite tanks.
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