Evaluation of performance improvement of the combined biomass gasifier power cycle using low‐temperature bottoming cycles: Organic Rankine cycle, Kalina and Goswami

Abstract

A novel combination of a conventional combined power plant and low-temperature power generators as a cogeneration cycle coupled with a biomass gasifier is presented in this study. For this purpose, mathematical modeling of organic Rankine cycle (ORC), Kalina, and Goswami cycles was performed as a bottoming power system. To achieve the goals of sustainable energy development, a portion of the fuel required for the proposed cycle has been provided using renewable biomass fuels. The results indicated that the base cycle heat recovery in all proposed scenarios would increase energy efficiencies by 6.1%, 3.3%, and 1.1%, respectively, to ORC, Kalina, and Goswami cycles. Furthermore, the results of the parametric studies on principal factors such as steam to biomass and equivalence ratios in the gasifier, working fluid types in the ORC, mass fraction of ammonia-water mixture in Kalina and Goswami cycles, as well as thermodynamic properties of the expander and condenser can be highly considered for the energy industry developers.

Sustainable approach to integrate a conventional power plant and renewable energies, coupled with the Goswami cycle and Maisotsenko heat exchanger

“…Biomass chemical compositions are denoted as C x H y O z N w S v , representing the molar ratios of hydrogen to carbon, oxygen to carbon, nitrogen to carbon, and sulphur to carbon within the biomass. [7] C…”

“…In this study, biomass gasification and parabolic solar concentrators are proposed to contribute to generating a portion of the required input energy for the combined cycle. [3][4][5] One of the main aspects of this research is presenting a practical solution with a futuristic and innovative approach to the energy supply problem. In this regard, the utilization of the innovative Maisotsenko cycle for gas turbine inlet air cooling, [6] as well as the implementation of organic Rankine and Goswami low-temperature cycles, can enhance the efficiency of the integrated cycle and reduce emissions.…”

“…In this regard, the utilization of the innovative Maisotsenko cycle for gas turbine inlet air cooling, [6] as well as the implementation of organic Rankine and Goswami low-temperature cycles, can enhance the efficiency of the integrated cycle and reduce emissions. [7] One of the most efficient and promising methods to enhance efficiency and reduce pollutant emissions is the use of inlet air precooling for compressors. Ibrahim et al [8] examined the techniques of cooling the compressor's inlet air.…”