Energy, exergy and economic analysis of studying a biomass-based multigeneration system for power, heating, hydrogen and freshwater production

Abdulameer Khadim Alyasari, Muhammed; Mirzaee, Iraj; Pourmahmoud, Nader

doi:10.22104/hfe.2025.7635.1363

Energy, exergy and economic analysis of studying a biomass-based multigeneration system for power, heating, hydrogen and freshwater production

Articles in Press

Document Type : Research Paper

Authors

Muhammed Abdulameer Khadim Alyasari

Iraj Mirzaee

Nader Pourmahmoud

Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran

10.22104/hfe.2025.7635.1363

Abstract

A new biomass system that produces electricity, provides heat, makes hydrogen and offers freshwater is described and analyzed in this paper. The proposed setup combines a gas turbine, a supercritical CO₂ cycle, a Kalina cycle, a PEM electrolyzer and a multi-effect desalination (MED) unit. The purpose of this method is to allow energy recovery and minimize its environmental effects on the entire system. To assess how the system operates, detailed thermodynamic and exergoeconomic evaluations were completed for several operating scenarios.

The results indicate that high efficiencies have been achieved, with hydrogen and freshwater consistently produced and with almost no irreversible losses during production. The specific unit cost of product (SUCP) was determined to be 17.67 $/GJ, showing that operation costs are low when compared to others. Biomass Energy has shown that raising turbine inlet temperature and controlling biomass moisture content permits the system to work more efficiently and recoup more energy. All in all, it turns out that biomass used in integrated systems provides an effective and environmentally friendly way to supply electricity and heat to many applications when a lot of biomass is available.

Keywords

Biomass gasification

Kalina cycle

MED desalination

3E analysis

Sustainable energy

Subjects