Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Quantifying heat losses by radiation, convection and conduction in a CVD reactor for polysilicon production
Year:2014
Research Areas
  • Solar energy,
  • Silicon
Information
Abstract
n this work, a comprehensive model on the contributions to the energy consumption of a polysilicon CVD process is developed, covering radiation, conduction and convection losses. The comprehensive model calculations are in agreement with the experimental experience with a CVD laboratory reactor at our disposal. Moreover, heat-consumption theoretical models presented in this work can be applied not only to laboratory scale CVD reactors, but to industrial scale ones. Numerical results of the radiation and convection heat loss models are applied to a 36-rod reactor. Energy consumption due to radiation heat loss can be reduced from 27.8 to 13.1kWh/kg when the emissivity of the wall is reduced from 0.7 to 0.3 and the rods? surface temperature is 1150oC. Considering thermal shields, radiation heat loss can be reduced by 30.5% and 65.8% for shield emissivities of 0.7 and 0.3, respectively. Furthermore, energy consumption due to convection heat loss along a deposition process at 1100oC is 23.6kWh/kg and the radiative loss is calculated to be 20.5kWh/kg.
International
Si
Congress
Silicon for the Chemical and Solar Industry XII
960
Place
Trondheim, Norway
Reviewers
Si
ISBN/ISSN
00-0000-000-0
Start Date
23/06/2014
End Date
26/06/2014
From page
123
To page
134
Proc. Silicon for the Chemical and Solar Industry XII
Participants
  • Autor: Alba Ramos Cabal (UPM)
  • Autor: Araceli Rodríguez (Universidad Complutense de Madrid)
  • Autor: Javier Valdehita Torija (UPM)
  • Autor: Juan Carlos Zamorano . (UPM)
  • Autor: Laura Méndez-Giménez (Centesil)
  • Autor: Carlos del Cañizo Nadal (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
  • Departamento: Electrónica Física
  • Centro o Instituto I+D+i: Instituto de Energía Solar
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