燃料电池废热驱动弹热制冷装置性能分析

doi:10.19562/j.chinasae.qcgc.2024.04.012

Abstract

Abstract:

Heat-driven elastocaloric cooling is a new solid-state refrigeration technology which uses shape memory alloy deformation after heating to drive the phase transformation of elastocaloric materials to produce a refrigeration effect. In this paper， a combined system of elastocaloric refrigeration device and fuel cell is designed， which uses the waste heat from fuel cell to drive the elastocaloric-cooling device to improve the efficiency of energy utilization， and produce a cooling effect. Based on the working principles of fuel cell and elastocaloric cooling， a dynamic coupled simulation model for the whole system is established by Simulink software to study the dynamic operation characteristics of the combined system and the influence of operation parameters on the system performance. The results show that adding an elastocaloric cooler can improve the energy utilization efficiency of the whole system. When the operation temperature of fuel cell is 80 ℃， the system can produce 1.76 kW cooling power. Adjusting the operation pressure of fuel cell to 2.5 atm can maximize the comprehensive output power and operation efficiency of the system. The current density of fuel cell has opposite influence on the output power and operation efficiency of the combined system.

Key words: proton exchange membrane fuel cell, elastocaloric cooler, waste heat recovery

Yuxiang Peng,Qinghua Yu,Rui Ao,Fuwu Yan. Performance Analysis of Elastocaloric Cooler Driven by Waste Heat from Fuel Cell[J].Automotive Engineering, 2024, 46(4): 662-668.

Figures/Tables 15

参数

数值

PEMFC工作温度 $T$ / ℃

环境温度 $T 0 ?$ / ℃

额定工作功率/kW

电池活性面积/cm²

电堆单电池片数

电堆质量/kg

电流工作密度 $j L$ /（A·cm^-2）

PEMFC工作压强 $p a$ /atm

阳极气体成分

阴极气体成分

406

140

1.2

40% $H 2 O$ /60% $H 2$

21% $O 2$ /79% $N 2$

参数	数值
参数	执行器	制冷器
长度 $L$ /m	0.2	0.09
横截面积 $S$ / $m 2$	0.007 7	0.002 18
相变潜热值 $Δ h A M$ /（J?g^-1）	10
密度 $ρ$ /（kg? $m - 3$ ）	6 500
比热容 $c$ /（J?g^-1?℃^-1）	0.5
弹性模量 $E$ /MPa	30 000
相变应变量 $ε T$	0.03

时间	$t 0 - t 1$	$t 1 - t 2$	$t 2 - t 3$	$t 3 - t 4$	$t 4 - t 5$	$t 5 - t 0'$
V1	$O$	$O$	$O$	$X$	$X$	$X$
V2	$X$	$X$	$X$	$O$	$O$	$O$
V3	$X$	$X$	$X$	$O$	$X$	$X$
V4	$X$	$O$	$X$	$X$	$X$	$O$
V5	$X$	$X$	$O$	$X$	$O$	$X$

References 12

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Performance Analysis of Elastocaloric Cooler Driven by Waste Heat from Fuel Cell

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References 12

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时间	$t 0 - t 1$	$t 1 - t 2$	$t 2 - t 3$	$t 3 - t 4$	$t 4 - t 5$	$t 5 - t 0'$
V1	$O$	$O$	$O$	$X$	$X$	$X$
V2	$X$	$X$	$X$	$O$	$O$	$O$
V3	$X$	$X$	$X$	$O$	$X$	$X$
V4	$X$	$O$	$X$	$X$	$X$	$O$
V5	$X$	$X$	$O$	$X$	$O$	$X$

时间	$t 0 - t 1$	$t 1 - t 2$	$t 2 - t 3$	$t 3 - t 4$	$t 4 - t 5$	$t 5 - t 0'$
V1	$O$	$O$	$O$	$X$	$X$	$X$
V2	$X$	$X$	$X$	$O$	$O$	$O$
V3	$X$	$X$	$X$	$O$	$X$	$X$
V4	$X$	$O$	$X$	$X$	$X$	$O$
V5	$X$	$X$	$O$	$X$	$O$	$X$

时间	$t 0 - t 1$	$t 1 - t 2$	$t 2 - t 3$	$t 3 - t 4$	$t 4 - t 5$	$t 5 - t 0'$
V1	$O$	$O$	$O$	$X$	$X$	$X$
V2	$X$	$X$	$X$	$O$	$O$	$O$
V3	$X$	$X$	$X$	$O$	$X$	$X$
V4	$X$	$O$	$X$	$X$	$X$	$O$
V5	$X$	$X$	$O$	$X$	$O$	$X$