| 摘要: |
| 本文采用TRNSYS软件建立自然冷源冷藏陈列柜系统仿真模型。选取陈列柜送风温度、载冷剂供冷温度为变量，以全年能耗作为考核指标对自然冷源食品冷藏陈列柜运行工况进行优化；在优化基础上分析系统运行特性，并与传统食品冷藏陈列柜能耗进行对比。结果表明：在冷藏陈列柜送风温度为-1.5 ℃，载冷剂供冷温度为-3 ℃时的优化工况下，系统年能耗最低，为11 506 kW?h，相比传统食品冷藏陈列柜系统能耗降低40.8%。优化工况下自然冷源蓄冷及供冷模式与自然冷源单独供冷模式总计运行时长为3 739 h，占全年总运行时间的42.7%。全年系统COP为3.9，制冷机组COP为4.1。 |
| 关键词: 冷藏陈列柜 系统节能 TRNSYS 自然冷源 |
| DOI： |
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| 基金项目:国家自然科学基金(51476148) |
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| Operation Analysis of Refrigerated Display Cabinets Based on Thermal Energy Storage and Cooling Using Natural Cold Source |
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Yuan Pei1, He Zhengyang1, Liu Aolong1, Hou Feng1, Lü Yanli1, Hu Chaolong2
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| (1.College of Energy and Power Engineering, Zhengzhou University of Light Industry;2.Shandong Xiaoya Cold Chain Co., Ltd.) |
| Abstract: |
| In this study, a simulation model of a natural cold source-based refrigerated display cabinet system is established by using the TRNSYS software. First, the air supply temperature of the display cabinet and the cooling temperature of the coolant are selected as variables, and the annual energy consumption is considered as the assessment index to optimize the operating conditions of the natural cold source-based refrigerated display cabinets for food storage. Second, the operating characteristics of the system are analyzed based on optimization and compared with the energy consumption of traditional food refrigerated display cabinets. The results show that the annual energy consumption of the optimal working condition system is the lowest (11 506 kW?h) when the air supply temperature of the display cabinet and the cooling temperature of the coolant is -1.5 °C is -3 °C, respectively. Compared with the traditional food refrigerated display cabinets without a natural cold source, the energy consumption of this system is reduced by 40.8%. In the optimum working conditions, the total operating time of the natural cold source-based cold thermal energy storage cooling mode and the natural cold source-based separate cooling mode is 3 739 h, accounting for 42.7% of the total running time during the entire year; the COP (coefficient of performance) of the system is 3.9, and the COP of the refrigeration unit is 4.1. |
| Key words: refrigerated display cabinet system energy saving TRNSYS natural cold source |
