化工学报2017，Vol.68Issue(1)：329-335,7.DOI:10.11949/j.issn.0438-1157.20160773
自复叠制冷系统压力和组分调节
Pressure and composition regulation of auto-refrigerating cascade system
摘要
Abstract
The hot-gas bypass control can effectively eliminate the harm of high pressure on auto-refrigerating cascade system, but it is useless for the regulation of mixed refrigerant composition. The four kinds of pressure and composition adjustment method with two bypass was put forward in connection with the characteristics of higher condensing pressure and exhaust temperature of three-stage auto-refrigerating cascade cycle. The condensing pressure was changed in regular fluctuations and the solenoid valve was opened and closed frequently for the hot-gas bypass regulation, and the refrigeration system was stable after 70 min. The cold lost seriously for vapor outlet bypass adjustment of phase separator Ⅱ, and the cold of refrigerant was discharged to the reservoir through the bypass line. The performance of the refrigeration system was very close to the vapor outlet bypass adjustment of phase separator Ⅰ and two phase separators, and the refrigeration cycle was stable after 30 min. The vapor outlet bypass adjustment of phase separator Ⅰ and two phase separators were the better pressure and composition regulation method of auto-refrigerating cascade cycle according to the study of the operating conditions of compressor and evaporator.关键词
自动复叠制冷/R600a/R23/R14/组分调节/旁通控制/压力调节Key words
auto-refrigerating cascade system/R600a/R23/R14/composition regulation/bypass control/pressure regulation分类
通用工业技术引用本文复制引用
芮胜军,张华,李健,王志远..自复叠制冷系统压力和组分调节[J].化工学报,2017,68(1):329-335,7.基金项目
国家自然科学基金项目（51176124）；河南省重点攻关项目（152102210279）；河南省高等学校重点科研项目（15A470001）；河南科技大学青年科学基金项目（2015QN014）。 （）
