| 摘要: |
| 为研究前置仓装配式冷库实际运行状态下的动态负荷，本文以上海市某前置仓装配式冷库为研究对象，测试其在冷藏温区下运行的实际负荷。考虑货物进库因素后,装配式冷库动态负荷模型的相对误差由17.8%降至5.26%，提高了冷库动态负荷的计算精度，证明该模型具有一定的准确性，并通过MATLAB建立冷库负荷相关因素的数学模型。结果表明：当冷库内外环境压差超出风幕机最佳工况区间时，由人员进出造成的负荷随冷库内外环境压差、库外相对湿度、库外温度和人员进出频次的上升而增大。对于该类小型装配式冷库而言，高使用率状态下的冷库负荷主要由库门处热质交换现象造成。从经济性的角度分析，优化风幕机的相关参数，提高其最佳工况区间可进一步降低冷库负荷，达到节能的效果。 |
| 关键词: 前置仓 装配式冷库 3R2C模型 冷库负荷 |
| DOI： |
| Received:February 02, 2021Revised:May 28, 2021 |
| 基金项目:国家自然科学基金项目（50906054）。 |
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| Research on Dynamic Energy Consumption of Front Warehouse Assembly Cold Storage and Analysis of Influencing Factors |
|
Gu Han1, Zhang Hua1, Chen Xi1, Zhao Ju2
|
| (1.School of Energy and Power Engineering, University of Shanghai for Science and Technology;2.Shanghai Institute Of Quality Inspection and Technical Research) |
| Abstract: |
| To study the dynamic load of assembly cold storage under actual operating conditions, this study used prefabricated cold storage in Shanghai as the research object and tested its actual load with a refrigerated area. The results showed that the relative error of the dynamic load model of the assembly cold storage was reduced from 17.8% to 5.26% after considering the factors of goods entering, which improved the calculation accuracy of the dynamic load of the cold storage and proved that the model was accurate. MATLAB was used to establish a mathematical model of factors related to cold storage load. The results show that when the pressure difference between the inside and outside of the cold storage exceeded the optimal operating range of the air curtain machine, the load of the cold storage caused by personnel entry and exit increased with the increase in internal and external environmental differential pressure, outside relative humidity, outside temperature, and frequency of personnel entry and exit. For this type of small assembly cold storage, the load of cold storage under a high utilization rate was mainly caused by the heat and mass exchange at the door. From an economic point of view, optimizing the relevant parameters of the air curtain to extend the optimum operating range of equipment could further reduce the load of cold storage and achieve energy saving. |
| Key words: front warehouse assembly cold storage 3R2C model cooling load |
