Thermodynamic feasibility analysis of a newly modified absorption power cycle running with LiBr-water


Tozlu A., Yosaf S. A. , ÖZCAN H.

Environmental Progress and Sustainable Energy, vol.40, no.1, 2021 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1002/ep.13483
  • Title of Journal : Environmental Progress and Sustainable Energy

Abstract

© 2020 American Institute of Chemical EngineersThis study thermodynamically evaluates a newly modified absorption power cycle (APC) working with Lithium Bromide–Water (LiBr-H2O) solution and compares it with the conventional Rankine, one-stage, and three-stage APC systems. An additional steam condenser is integrated to the conventional APC and part of pure water is extracted and pumped back to the high-pressure side without passing through the absorber of the cycle. In order to specify the best system parameters, parametric optimization of all configurations is evaluated. The Rankine cycle and the modified APC have better thermodynamic performances than those of the conventional and the three-stage APC at generator temperatures. The conventional APC is found to improve the cycle performance at low generator pressure. However, the efficiencies of this cycle start to decrease when generator pressure increases. In contrast, the Rankine cycle and the modified APC have larger working ranges of generator pressure.