Work

Thermodynamic analysis and multi-objective optimization of the Hefei Advanced Light Facility (HALF) cryogenic system

Year: 2025

Type: article

Abstract: This study conducts a comprehensive thermodynamic investigation and multi-objective optimization of the cryogenic system for the Hefei Advanced Light Facility (HALF), a critical subsystem responsible for maintaining operational stability and performance. Through systematic application of energy and exergy analysis methodologies, a thermodynamic framework is established to quantify system efficiency and pinpoint primary inefficiency sources. The optimization strategy employs five advanced multi-objective evolutionary algorithms (NSGA-III, MOPSO, SPEA2, MOGOA, MOAHA) for Pareto-frontier exploration, addressing the inherent trade-offs between thermodynamic performance and resource consumption. Post-optimization results demonstrate a 6.56% relative improvement in exergy efficiency (from 55.79% to 59.45%), accompanied by 8.3% reduction in total power consumption and 12.1% decrease in liquid nitrogen usage. A novel life cycle cost analysis (LCCA) model integrates capital expenditure with operational parameters, revealing 24.7% lifecycle cost reduction potential over the 30-year service period through optimal configuration selection. The proposed methodology establishes new benchmarks for cryogenic system design in particle accelerator facilities, offering both theoretical guidance for thermodynamic optimization and practical strategies for sustainable operation of large-scale scientific infrastructures.

Source: Case Studies in Thermal Engineering

DOI: 10.1016/j.csite.2025.107417