Development and system application of phase change material for cold storage of fruits and vegetables

doi:10.19799/j.cnki.2095-4239.2023.0384

Abstract

Abstract:

With the continuous increase in the demand for high-quality fruits and vegetables, the cost of cold storage operations has become a significant concern owing to its high energy consumption. To address this issue, phase-change storage technology has been integrated with traditional cold storage to reduce operational costs. Specifically, the cold storage material is charged during off-peak hours using valley power, thereby permitting power-free operation during peak hours. To ensure high quality and safety standards for the preservation process, a low-temperature phase change material with an adjustable phase change temperature is developed. In addition, the effects of the arrangement of cold storage panels and placement of goods on the storage temperature are investigated using numerical simulations, and a cold storage system capable of operating without electricity for 16 hours is designed. The results demonstrate the potential of phase-change storage technology to significantly reduce the energy consumption and costs associated with cold storage operations for preserving fruits and vegetables while simultaneously maintaining product quality and safety.

Key words: phase change materials, cold storage, power-free operation

CLC Number:

TB 69

Zhaofeng DAI, Zhu JIANG, Dongliang ZHAO, Zhiyuan ZHANG, Xiaosong ZHANG. Development and system application of phase change material for cold storage of fruits and vegetables[J]. Energy Storage Science and Technology, 2023, 12(12): 3720-3729.

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References 14

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名称	化学式	CAS-RN	来源	纯度
麦芽糖醇	C₁₂H₂₄O₁₁	585-88-6	阿拉丁	分析纯
十水合四硼酸钠	Na₂B₄O₇·10H₂O	1303-96-4	西陇化工	分析纯
硫酸钾	K₂SO₄	7778-80-5	西陇化工	分析纯
三水合乙酸钠	C₂H₃O₂Na·3H₂O	6131-90-4	西陇化工	分析纯
去离子水	H₂O	—	—	—

名称	型号	工作范围	测量精度	生产厂家
数据采集仪	34970A	-200～200 ℃	±0.0256 ℃	AGILENT TECHNOLOGY
电子天平	AUW320	0.01～320 g	±0.1 mg	SHIMADZU
差示扫描量热仪	μDSC7 Evo	-45～120 ℃	±0.4%	SETARAM
导热系数仪	TC3000E	0.001～10 W/(m·K)	±3%	XIATECH
低温恒温液浴槽	XODC-2015	-50～300 ℃	±0.05 ℃	先欧
恒温干燥箱	101-00A	10～300 ℃	±1 ℃	佰辉

参数	DH-1相变材料	货物	保温板
固态比热容/[J/(g·K)]	2.59	2.91	1.26
密度/(kg/m³)	1000	280	40
固态导热系数/[W/(m·K)]	2.241	0.373	0.0310
液态比热容/[J/(g·K)]	4.23	—	—
液态导热系数/[W/(m·K)]	0.6072	—	—
相变潜热/(J/g)	299.67	—	—
相变温度/℃	0.61	—	—
动力黏度/[(N·s)/m²]	0.001	—	—

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