Performance analysis of biogas-fueled maisotsenko combustion turbine cycle

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

9 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Article number117247
Journal / PublicationApplied Thermal Engineering
Volume195
Online published18 Jun 2021
Publication statusPublished - Aug 2021

Abstract

The utilization of biogas as a renewable energy source in power generation systems has been receiving much attention. While gas turbine cycle (GT) systems are commonly used in modern power plants, the reduction of system efficiency owing to the parasite composite in biogas has restricted its sustainable development. Alternatively, the Maisotsenko combustion turbine cycle (MCTC) technology, that recovers thermal energy from turbine exhaust gas for pressured air humidification, improves the turbine power and cycle efficiency significantly. The biogas-fueled MCTC system as their integration is expected to relive the biogas application on GT systems. Nevertheless, the evaluation of such integrative performance has been so far in absence. Accordingly, this paper reports our detailed investigation through exergy analysis. The numerical model of an integrated system was first developed and validated. Then the impacts of methane volume ratio ∅ in biogas, compressor pressure ratio, water injection rate, compressor/turbine inlet temperatures were studied. The simulation results showed that the MCTC outperforms the conventional GT. When fueled by natural gas (∅ = 0.9) and biogas (∅ = 0.45) alternatively, the exergy efficiency can be improved by more than 10% and 52% respectively. Also, unlike the conventional GT, the MCTC performance is less sensitive to the biogas methane content. Our findings consolidate the merits of biogas-fueled MCTC system for zero-carbon applications.

Research Area(s)

  • Biogas, Exergy analysis, Gas turbine, Maisotsenko combustion turbine cycle

Citation Format(s)