制冷学报2025，Vol.46Issue(2)：74-81,8.DOI:10.12465/j.issn.0253-4339.2025.02.074
基于半经验模型的变工质双螺杆制冷压缩机运行特性
Operating Characteristics of Twin-Screw Refrigeration Compressor with Different Refrigerants Based on the Semi-Empirical Model
摘要
Abstract
The refrigeration industry is advancing towards environmentally friendly,efficient,and safe alternative refrigerants.To analyze compressor performance with various refrigerants,this study proposes a modified semi-empirical model with 13 characteristic parameters.Experiments were conducted with R22,R507,and R744 under variable operating conditions to identify parameters and validate the model.The experimental and simulated results showed strong agreement,with average relative errors of 2.07％for input power and 1.17％for mass flow rate.Using a typical operating condition,the losses and efficiencies of different refrigerants were compared at various frequencies.Results indicate that R744,with the lowest pressure,leakage,and power losses,demonstrated superior performance.While R507 and R22 showed similar efficiencies,the efficiency of R507 declined significantly at frequencies above 50 Hz due to increased pressure losses.This study provides a theoretical basis for optimizing compressor designs for various refrigerants.关键词
运行特性/半经验模型/双螺杆压缩机/制冷剂替代Key words
operating characteristic/semi-empirical model/twin-screw compressor/refrigerant substitution引用本文复制引用
李彦澎,陈浙寅,王闯,任大伟,邢子文,朱士哲..基于半经验模型的变工质双螺杆制冷压缩机运行特性[J].制冷学报,2025,46(2):74-81,8.基金项目
国家自然科学基金(51976148)资助项目.(The project was supported by the National Natural Science Foundation of China(No.51976148).) （51976148）
