CO_2/NH_3复叠式和CO_2为载冷剂的NH_3双级压缩制冷系统的热力性能分析

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• 英文论文题名：THERMAL PERFORMANCE ANALYSISON CO_2/NH_3 CASCADE REFRIGERATION SYSTEMAND CO_2AS SECONDARY REFRIGERANT NH_3TWO-STAGE REFRIGERATION SYSTEM
• 论文作者：高强
• 年：2016
• 作者机构：福建雪人股份有限公司;
• 论文关键词：CO_2制冷剂 ; CO_2/NH_3复叠式制冷 ; CO_2载冷剂 ; NH_3双级压缩
• 英文论文关键词：CO_2 refrigerant ; CO_2/NH_3 cascade refrigeration system ; CO_2 secondary refrigerant ; NH_3 two-stage refrigeration system
• 会议召开时间：2016-11-29
• 会议录名称：福建省科协2016年学术年会分会场——福建省制冷学会2016年学术年会论文集
• 语种：中文
• 分类号：TB657
• 学会代码：FJZL
• 会议名称：福建省科协2016年学术年会分会场——福建省制冷学会2016年学术年会
• 会议地点：中国福建泉州
• 主办单位：福建省制冷学会
• 学会名称：福建省制冷学会
• 页数：8
• 文件大小：505k
• 原文格式：O
• 会议级别：地方

摘要

本论文对低温制冷中的CO_2/NH_3复叠式和CO_2为载冷剂的NH_3双级制冷循环系统(下文中简称为NH_3双级+CO_2系统)进行了热力学对比分析,利用matlab编程对两个系统进行热力计算。研究得出CO_2/NH3_复叠式制冷循环系统存在一个最佳蒸发冷凝温度;在相同蒸发温度下,NH_3双级+CO_2系统的COP高于CO_2/NH_3复叠式制冷循环系统;随着蒸发温度升高,NH_3双级+CO_2系统COP地增长速度大于CO_2/NH_3复叠式系统;在相同制冷量下,CO_2/NH_3复叠式低温循环的制冷剂质量流量为NH_3双级+CO_2系统的4.3倍。
Comparative analysis of thermodynamics on the CO_2/NH_3 cascade and CO_2 as refrigerant NH_3 refrigeration cycle system(hereinafter referred to as NH_3 two-stage+CO_2) for low temperature refrigeration has been done.Matlab programming has been used for thermodynamic calculation of the both system.The conclusion is there is an optimum evaporating condensing temperature in CO_2/NH_3 cascade refrigeration cycle system;At the same evaporation temperature,the COP of NH_3 two-stage+CO_2 system is higher than that of CO_2/NH_3 cascade refrigeration cycle system;With the increase of the evaporation temperature,the COP's growth of NH_3 two-stage+CO_2 system is faster than that of CO_2/NH_3 cascade refrigeration system;When the cooling capacity is definition,the refrigerant mass flow rate for low temperature cycle of CO_2/NH_3 cascade refrigeration cycle system is 4.3 times as much as that of NH_3 two-stage +CO_2system.

引文

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