CO)2复叠式制冷机组应急冷源设计研究  

Research on emergency cold source for CO_2 cascade refrigeration unit

作　　者：廖星东 王铁军[1] 王军[1] 唐景春[1] 陈小华 张敬超 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]安徽美乐柯制冷设备有限公司,宣城242000

出　　处：《低温与超导》2015年第2期63-66,共4页Cryogenics and Superconductivity

摘　　要：CO2以其优良的热力和环保性能在商用制冷领域具有广泛的应用前景,提升CO2制冷系统安全性和可靠性是相关技术研究的重点之一。根据商用R134a/CO2复叠式制冷机组研发和冷链物流领域的应用需求,配套设计了应急冷源作为安保辅助装置,当制冷机组在设备故障、停电等非常规条件下停机时,应急冷源即刻启动工作,维持低温级储液器内CO2液体温度在设定范围内波动,确保低温级循环回路的压力在安全范围内,并为复叠式制冷机组的快速启动提供条件。建立了被控对象数学模型,模拟分析了应急冷源运行时被控对象热工参数的变化规律,结合能耗和可靠性因素优选了应急冷源的启/停比和制冷量,进行了应急冷源制冷系统的设计。CO2 has been widely used in commercial refrigeration systems for its excellent thermal and environmental property. It is one of focus to enhance the safety and reliability of C02 refrigeration systems. To meet the needs of commercial R134a/ CO2 refrigeration unit development and cold chain logistics field, an emergency cold source was designed as security auxiliary de- vice. When the refrigeration unit in the condition of equipment failures, power outages and other non - conventional was engined off, emergency cold source immediately started working and maintained the temperature of liquid CO2 reservoir device in set range to ensure the pressure of cryogenic cycle in security range and to lay the foundation for refrigeration system fast start. After its mathematical model was established, thermal parameters were simulated when emergency cold source in the working condition; emergency cold source system was designed. And then, coupled with the power consumption and reliability factors, the time ratio （start/stop） was optimized.

关 键 词：应急冷源系统 CO2复叠式制冷机组 设计 模拟 

分 类 号：TB651[一般工业技术—制冷工程]