摘要
液化天然气(LNG)在气化升温过程中会释放大量的冷量,LNG冷藏车回收并利用该冷量对车厢进行供冷,该冷藏车具有节能和环保的特点。本文介绍了LNG冷藏车的基本原理以及新型冷量回收系统的设计方案,为了研究LNG冷藏车的供冷性能,建立了仿真模型并对冷藏车冷量回收系统进行模拟计算,分析了乙二醇入口温度和流量、LNG流量、风速、系统压力对制冷量、空气出口温度的影响。计算结果显示,乙二醇流量是对系统性能具有重要影响参数之一,通过对结果分析,证明了LNG冷量回收应用于冷藏车制冷的可行性,同时为LNG冷藏车的系统设计提供了参数。研究结论对LNG冷藏车设计具有重要的参考价值。
The vaporization of LNG in the heating process releases a lot of cold energy.The cold energy was used to cool the air temperature in LNG refrigerated trucks which is energy-saving and environmental protection.The basic principles of LNG refrigerated trucks and the design of cold recovery system were described.In order to research the cooling performance of LNG refrigerated trucks,a simulation model was established.The effect of the glycol inlet temperature and flow rate,natural gas flow rate,wind speed and the system pressure on the cooling capacity and air outlet temperature were analyzed.The results show that ethylene glycol flow is an important factor on system performance and LNG cold energy recovery is suitable for the refrigerated truck.The bases for design of LNG refrigerated trucks are provided according to the analysis.The conclusion is of great significance on the design of LNG refrigerated trucks in industry.
出处
《流体机械》
CSCD
北大核心
2012年第10期75-79,61,共6页
Fluid Machinery
基金
教育部科学技术研究重点项目资助(2120007)
天津市高等学校科技发展基金计划项目(20100420)
关键词
LNG
冷能回收
冷藏车
仿真
LNG
cold recovery
refrigerated truck
simulation
