刘广海,吴俊章,FOSTER A,谢如鹤,唐海洋,屈睿瑰.多温蓄冷车设计与车内温度场分析[J].农业机械学报,2019,50(4):309-316.
LIU Guanghai,WU Junzhang,FOSTER A,XIE Ruhe,TANG Haiyang,QU Ruigui.Design of Multi-temperature Cold Storage Vehicle and Analysis on Temperature Field in Vehicle[J].Transactions of the Chinese Society for Agricultural Machinery,2019,50(4):309-316.
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多温蓄冷车设计与车内温度场分析   [下载全文]
Design of Multi-temperature Cold Storage Vehicle and Analysis on Temperature Field in Vehicle   [Download Pdf][in English]
投稿时间:2018-11-12  
DOI:10.6041/j.issn.1000-1298.2019.04.035
中文关键词:  多温蓄冷车  相变蓄冷  多温运输  温度场
基金项目:“十二五”国家科技支撑计划项目(2013BAD19B01)和广东省科技计划重点项目(2017B020206006、2017B090907028、2016B020205004)
作者单位
刘广海 广州大学 
吴俊章 广州大学 
FOSTER A 伦敦南岸大学 
谢如鹤 广州大学 
唐海洋 广州大学 
屈睿瑰 中南大学 
中文摘要:为克服现有蓄冷车控温范围有限、不可多温共配等问题,设计了一款集车载制冷系统、独立蓄冷槽、隔热车厢(冷冻和冷藏单元)、导风槽、内隔板等于一体的多温蓄冷车。该多温蓄冷车将蓄冷槽安装在车厢前端并独立隔热保温。夜间利用低谷电对蓄冷槽内相变蓄冷材料进行充冷;当多温蓄冷运输时,冷冻单元通过车厢前端送风系统将冷能导出并调控,冷藏单元通过导风槽将冷气导入并调控。对车厢内冷冻冷藏单元体积比为1∶1,温度分别设定为-15.0℃和3.0℃工况进行了仿真和试验对比分析。研究表明,所构建的多温蓄冷车温度模拟值与试验值的均方根误差在0.7~1.1℃之间,总体偏差合理,可较好地反映多温蓄冷车内温度场分布状况。试验结果也表明,该多温蓄冷车车厢冷冻、冷藏单元可有效控温10h以上,满足配送运输需要;平均温度分别在-14.2~-12.9℃和3.4~4.2℃间波动,波动范围分别为1.3℃和0.8℃,温度绝对不均匀度系数S在1.2内,较传统蓄冷车平均温度波动值降低了73.7%,S值降低了50%以上。改变车厢内冷冻冷藏单元体积比的进一步仿真也表明,蓄冷车内温度场分布仍然均匀,可满足实际运输需要。
LIU Guanghai  WU Junzhang  FOSTER A  XIE Ruhe  TANG Haiyang  QU Ruigui
Guangzhou University,Guangzhou University,London South Bank University,Guangzhou University,Guangzhou University and Central South University
Key Words:multi-temperature cold storage vehicle  phase change cold storage  multi-temperature transport  temperature field
Abstract:A multi-temperature vehicle incorporating phase change material (PCM) was designed to help multi-temperature joint distribution and widen temperature control range, which integrated on-board refrigeration system, the phase change cold storage tank (PCCST), heat-insulated compartment (divided into freezing and cooling unit), air guiding device, thermal insulation board and so on. The PCCST (using 360kg PCM, which had a melting temperature of -30.0℃ and a latent heat of 175.3kJ/kg) was set independently in front of the vehicle and charged by a refrigeration system by using cheap electricity at night when it was stationary. During transportation, the freezing unit derived and regulated the cold air from PCCST through the air supply system of the heat insulated carriage, and the cooling unit imported and regulated the cold air through the air guiding duct on one side above the heat-insulated carriage. The results of simulation and experiment were compared and analyzed as follows when the space ratio of freezing unit to cooling unit in the heat insulate carriage was 1∶1, and the temperature was set to be -15.0℃ and 3.0℃, respectively. It was showed that the temperature root mean squared error between simulation and test was between 0.7℃ and 1.1℃, and the overall deviation was reasonable, which could better reflect the distribution of temperature field in the multi temperature cold storage vehicle. In addition, the results showed that the multi-temperature cold storage vehicle could maintain the temperature of the products at -15.0℃ and 3.0℃ for more than 10h during the transportation. In fact, the average air temperature of the multi temperature carriage was distributed between -14.2~-12.9℃ and 3.4~4.2℃ whose fluctuation ranges were 1.3℃ and 0.8℃, respectively. The coefficient of absolute non uniformity of temperature was less than 0.6 when the freezing unit was -15.0℃ and less than 1.2 when the cooling unit was 3.0℃. The above parametric study showed that the average temperature fluctuation value of novel multi-temperature cold storage vehicle was 73.7% and the coefficient of absolute non uniformity was 50% lower than that of the traditional cold storage vehicle. The further simulation of changing the space ratio of freezing unit to cooling unit in the carriage also showed that the temperature field in the carriage was uniform and could meet the actual transportation needs.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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