发布时间：2025-04-11

文章标题：祝贺课题组冯艺伟博士的水蓄冷工业冷水机组系统节能控制相关研究论文被期刊《Energy》收录

内容：

课题组冯艺伟博士的研究论文Energy Savings of Multi-Chiller Systems Comprising Hybrid-Type 1 Compressors Combined with Thermal Energy Storage Technology: Focusing on Compressor Isentropic Efficiency被期刊《Energy》收录。论文摘要如下：

Compressors account for over 50% of total energy consumption in refrigeration systems, making operational efficiency improvements vital for energy savings. This study optimizes a large-scale food industry refrigeration system by integrating hybrid type compressor selection, cooling capacity management, and thermal energy storage (TES). The optimization focusing on the collaborative improvement of chillers’ coefficient of performance (COP) and the isentropic efficiency (ηis) of compressors. A hybrid multi-chiller system combines variable-speed and variable-displacement compressors, where the former enables wide-range capacity regulation and the latter operates preferentially at full load. Cooling capacity is optimized by regulating primary chilled water flow and secondary return water temperature to maintain chillers’ PLRs within their optimal COP ranges, while compressor displacement adjustments ensure ηis remains maximized. TES integration facilitates “load shifting”, reducing parallel operation time of three chiller from 550 to 93 minutes and eliminating frequent on-off cycles. By coordinating TES charging/discharging with compressor control, variable-displacement chillers avoid low-load conditions while maintain the capacity regulating capability of variable-speed compressors, enhancing partial-load efficiency. Implemented in a milk production facility, this strategy achieves 32.2%-33.0% energy savings and reduces the peak-to-valley energy consumption difference by 44.8%-47.4%.

Keywords: Hybrid-type compressors; Compressor isentropic efficiency; Thermal energy storage; Cooling capacity management; Part-load ratio; Energy saving