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Waste heat driven dual-mode, multi-stage, multi-bed regenerative adsorption system

Saha, B.B. ; Koyama, S. ; Kashiwagi, T. ; Akisawa, A. ; Ng, K.C. ; Chua, H.T.

International journal of refrigeration, 2003-11, Vol.26 (7), p.749-757 [Periódico revisado por pares]

Oxford: Elsevier Ltd

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  • Título:
    Waste heat driven dual-mode, multi-stage, multi-bed regenerative adsorption system
  • Autor: Saha, B.B. ; Koyama, S. ; Kashiwagi, T. ; Akisawa, A. ; Ng, K.C. ; Chua, H.T.
  • Assuntos: Adsorption ; Adsorption system ; Applied sciences ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Gel de silice ; Heat recovery ; Refrigerating engineering ; Refrigerating engineering. Cryogenics. Food conservation ; Récupération de chaleur ; Silica gel ; Système à adsorption ; Techniques. Materials
  • É parte de: International journal of refrigeration, 2003-11, Vol.26 (7), p.749-757
  • Descrição: Over the past few decades there have been considerable efforts to use adsorption (solid/vapor) for cooling and heat pump applications, but intensified efforts were initiated only since the imposition of international restrictions on the production and utilization of CFCs and HCFCs. In this paper, a dual-mode silica gel–water adsorption chiller design is outlined along with the performance evaluation of the innovative chiller. This adsorption chiller utilizes effectively low-temperature solar or waste heat sources of temperature between 40 and 95 °C. Two operation modes are possible for the advanced chiller. The first operation mode will be to work as a highly efficient conventional chiller where the driving source temperature is between 60 and 95 °C. The second operation mode will be to work as an advanced three-stage adsorption chiller where the available driving source temperature is very low (between 40 and 60 °C). With this very low driving source temperature in combination with a coolant at 30 °C, no other cycle except an advanced adsorption cycle with staged regeneration will be operational. The drawback of this operational mode is its poor efficiency in terms of cooling capacity and COP. Simulation results show that the optimum COP values are obtained at driving source temperatures between 50 and 55 °C in three-stage mode, and between 80 and 85 °C in single-stage, multi-bed mode.
  • Editor: Oxford: Elsevier Ltd
  • Idioma: Inglês
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