Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (5): 708-711.DOI: 10.12068/j.issn.1005-3026.2014.05.023

• Materials & Metallurgy • Previous Articles     Next Articles

Experimental Study on Exergy Transfer Coefficient Affected by Cooling Air Volume in Vertical Tank of Waste Heat Recovery

DONG Hui, FENG Junsheng, LI Lei, WANG Aihua   

  1. SEPA Key Laboratory on Ecoindustry, Northeastern University, Shenyang 110819, China.
  • Received:2013-09-06 Revised:2013-09-06 Online:2014-05-15 Published:2014-08-18
  • Contact: FENG Junsheng
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Abstract: The exergy transfer coefficient formula in sintering moving bed was derived by introducing the concept of the exergy transfer coefficient in the convection heat exchanger and fixed bed into the vertical tank of sintering waste heat recovery. The relevant data of gassolid transfer process under different conditions in sinter bed of vertical tank was measured in homemade gassolid heat transfer experiment device, and the effect of the cooling air volume on the exergy transfer coefficient in sinter bed was investigated. The results showed that the average physical exergy transfer coefficient hex,m increased with the increase of the ore temperature when the cooling air volume was constant. At the same average ore temperature,when hex,m was greater than zero, it increased with the increase of the cooling air volume; when hex,m is less than zero it reduced air cooling exergy value of vertical tank outlet and adversed to strengthen gassolid heat transfer.

Key words: sinter, waste heat, recovery, gassolid heat transfer, exergy transfer coefficient

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