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Absorption cooling system with optimized heat exchange network for efficient waste heat recovery.

Number: pap. n. 789

Author(s) : XU Z., WANG R., YANG C.

Summary

Industrial waste heat utilization by absorption cooling systems is an energy-saving option, especially in tropical areas. However, waste heat conditions vary under different scenarios, and optimization is always important. To make full use of the waste heat, there are two aspects. First, the waste heat exchange network should be optimized by minimizing the irreversible loss. Second, the absorption system should properly couple to the optimized heat exchange network. In this paper, the two-step method is presented together with a real case study. Extra heat of 5250-8020 kW with temperature of 108-83? is obtained through the optimization, and is used for absorption cooling. The first law and second law efficiencies are increased by 54.0% and 67.7% respectively. Considering the 8000 h/yr operation of the system per year, the system could generate 3.2×107 kWh cooling output. Estimated with the local tariff, the payback period is about 2.2 years.

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Pages: 8

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Details

  • Original title: Absorption cooling system with optimized heat exchange network for efficient waste heat recovery.
  • Record ID : 30026489
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0789

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