摘要
本文针对韩城某5000t花椒冷藏库,建立了冷风机-纤维空气分布系统-货物-库内空气环境的空气流动与传热的三维计算模型。在保持总送风量不变情况,将半圆式纤维空气分布系统改进为四分之一圆式风管,以不均匀系数和余热排出效率为评价指标,对比研究了冷藏库内的速度场和温度场。结果显示,改进送风方式后,货物区温度不均匀系数最大可降低17.8%,库内余热排出效率最大可提高12.5%。
Taking the cold storage of pepper in Hancheng as research object,a three dimension physical and numerical model for flow and heat transfer inside the air-cooler-fiber air dispersion system-cargo-air in the cold storage was developed.Keeping the total air supply volume unchanged,the semi-circular fiber air dispersion system was improved into a quarter-circle fiber air dispersion system.The uniformity coefficient and the residual heat discharge efficiency were used as evaluation indexes.Then temperature Field and the velocity field in the cold storage was compared.The results show that the temperature unevenness coefficient in the cargo area can be reduced by up to 17.8%and the residual heat removal efficiency in the cold storage can be increased by up to 12.5%after the improved air supply mode.
作者
郭晋楠
南晓红
刘立军
GUO Jin-nan;NAN Xiao-hong;LIU Li-jun(School of Building Services Science and Engineering,Xi’an University of Architecture and Technology,710055;School of Energy&Power Engineering,Xi’an Jiaotong University)
出处
《建筑热能通风空调》
2020年第9期80-84,共5页
Building Energy & Environment
基金
陕西省自然科学基础研究计划项目(2018JM3038)。
关键词
冷藏库
纤维空气分布系统
温度不均匀系数
余热排出效率
cold storage
fiber air dispersion system
temperature uniformity coefficient
residual heat removal efficiency
