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摘要
为了研究小型相变蓄冷系统操作参数、环境因素对系统性能的影响,在实验研究的基础上,建立系统的稳态数学模型,研究了系统性能与各参数的关系。蓄冷系统实验证明了所建模型的可靠性。模拟研究发现,增加冷凝器进口风温会提高压缩机功率、降低系统的COP(性能系数);增加冷凝器迎面风速对系统性能的提升存在上限;增加压缩机转数是提高制冷量、缩短蓄冷时间的最有效方法。
Abstract
To study the influences of operation parameters and environmental factors on the performance of small-scale phase change cold storage system,a steady-state mathematical model is established on the basis of experimental research.The established model is verified to be reliable by performance experiments in a small-scale cold storage system.Simulation results show that the power of the compressor can be increased and COP(co-efficiency of performance) of the system will be declined when the inlet air temperature of the condenser is increased.There is an upper limit to improve the system performance by increasing the inlet air velocity of condenser.Increasing the compressor rotation speed can most likely be an effective way to increase the refrigeration capacity and shorten the cold storage time.
关键词
数学模拟
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制冷循环
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相变蓄冷
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传热
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微通道
Key words
mathematical simulation
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refrigeration cycle
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phase change cold storage
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heat transfer
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microchannel
Author summay
带有微通道换热的小型相变蓄冷系统性能研究[J].
现代化工, 2019, 39(10): 208-211 DOI:10.16606/j.cnki.issn0253-4320.2019.10.046