Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Ultra high temperature latent heat energy storage and thermophotovoltaic energy conversion
Year:2016
Research Areas
  • Solar energy,
  • Photovoltaic generation
Information
Abstract
A conceptual energy storage system design that utilizes ultra high temperature phase change materials is presented. In this system, the energy is stored in the form of latent heat and converted to electricity upon demand by TPV (thermophotovoltaic) cells. Silicon is considered in this study as PCM (phase change material) due to its extremely high latent heat (1800 J/g or 500 Wh/kg), melting point (1410 ?C), thermal conductivity (~25 W/mK), low cost (less than $2/kg or $4/kWh) and abundance on earth. The proposed system enables an enormous thermal energy storage density of ~1 MWh/m3 , which is 10e20 times higher than that of lead-acid batteries, 2e6 times than that of Li-ion batteries and 5e10 times than that of the current state of the art LHTES systems utilized in CSP (concentrated solar power) applications. The discharge efficiency of the system is ultimately determined by the TPV converter, which theoretically can exceed 50%. However, realistic discharge efficiencies utilizing single junction TPV cells are in the range of 20e45%, depending on the semiconductor bandgap and quality, and the photon recycling efficiency. This concept has the potential to achieve output electric energy densities in the range of 200e450 kWhe/m3, which is comparable to the best performing state of the art Lithium-ion batteries.
International
Si
JCR
Si
Title
Energy
ISBN
0360-5442
Impact factor JCR
4,292
Impact info
Volume
107
10.1016/j.energy.2016.04.048
Journal number
From page
542
To page
549
Month
SIN MES
Ranking
Participants
  • Autor: Alejandro Datas Medina (UPM)
  • Autor: Alba Ramos Cabal (UPM)
  • Autor: Antonio Marti Vega (UPM)
  • Autor: Carlos del Cañizo Nadal (UPM)
  • Autor: Antonio Luque López
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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