Work

Performance and Economic Analysis of an Absorption Heat Transformer-Assisted LNG Cold Energy Power Generation System

Year: 2025

Type: article

Abstract: Against the backdrop of increasing global LNG trade and the growing demand for efficient cold energy recovery, this study addresses the limitations of LNG cold energy power generation systems in onshore LNG-receiving terminals by innovatively integrating a Type II Absorption Heat Transformer (AHT) to utilize waste heat. A steady-state model of the AHT-LNG-CEPG system was developed to evaluate performance under different organic working fluids and operational parameters. Results indicate that R32, propane, propene, and R143a significantly enhance system performance. The system achieves optimal performance when the AHT condensation temperature is 40 °C and the LNG-CEPG evaporation temperature is 30 °C, with R32 identified as the most effective working fluid. Economic analysis confirms the system’s viability, demonstrating that optimizing LNG-CEPG equipment can reduce costs. Under a 20-year operational lifetime (OL), the system using R32 achieves the lowest Levelized Cost of Electricity (LCOE) and Payback Period (PP) at 0.084 USD/kWh and 7.86 years, respectively. These findings provide practical insights for industrial applications.

Source: Eng—Advances in Engineering

DOI: 10.3390/eng6110315

Authors: Xinyu Lang, Yanqin Mao, Zuqiang Li, Liang Cai

Institutions: Southeast University, Tongji University

Language: English

Topic: Thermodynamic and Exergetic Analyses of Power and Cooling Systems

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,448