典型空气循环制冷系统仿真研究

doi:10.11949/0438-1157.20191381

摘要/Abstract

摘要：

对四轮升压式空气循环制冷系统进行了稳态仿真，并与已有的研究数据进行对比。进一步针对系统主要的扰动源，分析系统的温度扰动特性。仿真结果表明：当引气温度或冲压空气温度发生扰动时，系统温度随之变化，其变化程度与扰动程度相当；而引气压力扰动会造成系统温度大幅度变化，引气压力扰动对四轮升压式空气循环系统制冷能力影响最为剧烈。本文为环控系统的设计和优化提供参考。

关键词: 环境, 控制, 优化设计, 制冷系统, 扰动特性

Abstract:

In this paper, the steady state simulation of four-wheel booster air circulation refrigeration system is carried out, the result of which is compared with the existing research data. Further， the temperature disturbance characteristics of the system is analyzed combined with the main system disturbance source. Simulation results show that when the temperature of the bleed air temperature or ram air disturbance occurs, the system temperature changes, the degree of which agrees with the disturbance degree. However the bleed air pressure disturbance will cause the system temperature to change greatly, that is to say, the bleed air pressure disturbance to the four-wheel booster air circulation refrigeration system influence is most intense. This paper provides reference for the design and optimization of the environmental control in the future.

Key words: environment, control, optimal design, refrigeration system, disturbance characteristics

中图分类号:

V 245.3

周月, 张鹤林, 程定斌, 尹俊成. 典型空气循环制冷系统仿真研究[J]. 化工学报, 2020, 71(S1): 341-345.

Yue ZHOU, Helin ZHANG, Dingbin CHENG, Juncheng YIN. Simulation study on four-wheel booster refrigeration system[J]. CIESC Journal, 2020, 71(S1): 341-345.

图/表 8

参考文献 30

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编号	节点名称
1	发动机引气
2	初级散热器热边出口
3	压气机出口
4	次级散热器热边出口
5	回热器热边出口
6	冷凝器热边出口
7	回热器冷边出口
8	初级涡轮出口
9	冷凝器冷边出口
10	次级涡轮出口

编号	节点名称
1	发动机引气
2	初级散热器热边出口
3	压气机出口
4	次级散热器热边出口
5	回热器热边出口
6	冷凝器热边出口
7	回热器冷边出口
8	初级涡轮出口
9	冷凝器冷边出口
10	次级涡轮出口

分类	参数	数值
设计工况	飞行高度H/m	0
	Mach数Ma	0
	引气温度T₁/℃	200
	引气压力P₁/ kPa	303.98
	引气含湿量h₁/(g/kg)	22
	供气流量q₁/(kg/h)	2100
	冲压空气温度T₂/℃	40
	冲压空气压力P₂/kPa	101.325
	冲压空气含湿量h₂/(g/kg)	22
	冲压空气流量q₂/(kg/h)	3150
部件参数	初级换热器效率η_HX1	0.6
	压气机效率η_C	0.7
	次级换热器效率η_HX2	0.83
	回热器效率η_h	0.32
	冷凝器效率η_cds,h	0.63
	水分离器除水效率η_ws	0.95
	初级涡轮效率η_PT	0.82
	初级涡轮效率η_ST	0.8
	风扇功率分配比例β	0.15
	二级涡轮膨胀比π_t2	1.9

分类	参数	数值
设计工况	飞行高度H/m	0
	Mach数Ma	0
	引气温度T₁/℃	200
	引气压力P₁/ kPa	303.98
	引气含湿量h₁/(g/kg)	22
	供气流量q₁/(kg/h)	2100
	冲压空气温度T₂/℃	40
	冲压空气压力P₂/kPa	101.325
	冲压空气含湿量h₂/(g/kg)	22
	冲压空气流量q₂/(kg/h)	3150
部件参数	初级换热器效率η_HX1	0.6
	压气机效率η_C	0.7
	次级换热器效率η_HX2	0.83
	回热器效率η_h	0.32
	冷凝器效率η_cds,h	0.63
	水分离器除水效率η_ws	0.95
	初级涡轮效率η_PT	0.82
	初级涡轮效率η_ST	0.8
	风扇功率分配比例β	0.15
	二级涡轮膨胀比π_t2	1.9

节点编号	仿真结果/℃	试验结果/℃	误差/℃
1	200	200	0
2	165.1	163.4	1.7
3	251.2	248.6	2.6
4	72.5	71.7	0.8
5	58.9	57.6	1.3
6	42.2	43.6	-1.4
7	61.3	60.7	0.6
8	0.1	-0.3	0.4
9	31.6	30.4	1.2
10	0	-0.1	0.1