摘要
绿色汽车燃料——液化天然气(LNG)具有大量的冷能,将该冷能回收用于汽车空调具有节能和环保的双重意义。为此,针对LNG冷量回收过程中的大温差换热关键技术,提出了带有蓄冷功能的多级冷能回收汽车空调系统,并对该系统进行了模块化数值分析;进而初步研究了空冷器中乙二醇溶液进出口温度及流量对风温的影响。结果表明,板翅换热器出口乙二醇溶液温度在275K左右,乙二醇溶液流量保持在100L/h左右较为合适。这为系统中各换热器进出口温度及结构参数的确定,以及进一步开展实验研究提供了可靠的理论依据。
The green fuel of vehicles (liquefied natural gas) has plenty of cold energy. It is significant for energy-saving and environment protection if the cold energy is recovered and used in vehicle air-conditioning system. Aiming at the key technique of heat exchange with big temperature difference in the process of LNG cold energy recovering, the vehicle air-conditioning system with multistage cold energy recovering is developed as the cold energy storage. And the modular numerical analysis is conducted for the system, Then, the influence of the temperature and flow rate of glycol solution input and output on the cooling air temperature is studied preliminary. The results show it is favorable when the glycol solution temperature is about 275 K. and the glycol solution flow rate is about 100 L/h at the outlet of the plate-fin heat exchanger, which provides the reliable theory basis for determination of the each exchanger inlet/outlet temperature and the structure parameters in the system, and for further experimental study.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2005年第10期124-126,共3页
Natural Gas Industry
基金
教育部高等学校骨干教师基金
山东建筑工程学院科研项目基金资助(SDAI05)。
