气体压缩机中冷器的节能节材实验研究

中冷器的主要功能是排除气体被压缩过程产生的热量,是提高压缩机效率的重要设备。从传热阻力看,壳程空气的热阻占总热组的80%以上,壳程气体阻力大,风机或压缩机能耗较大。要提高中冷器的传热性能,关键是强化壳程空气的对流传热和减小壳程空气的流动阻力。着重介绍气冷侧强化传热技术产生的节能效益,建立扭曲管中冷器和传统弓形折流板中冷器并行对比实验测试平台,通过改变壳程空气质量流量、管内循环水温度和流量等参数以测试其热力性能和压降损失,实验结果表明,扭曲管中冷器的壳程气体压降小,综合传热性能明显优于传统弓形折流板中冷器35%-87%,低Re数条件下尤为显著。对压缩机冷却系统的优化设计有一定的指导作用。

Experimental Investigation on Energy and Materials Savings of Intermediate Cooler Used in the Compressor Cold System

Intermediate cooler’s primary function is to rule out the gas heat generated by the compression process.It is important to improve the efficiency of the compressor equipment.Form the point of the view on the heat transfer resistance,the air resistance is more than 80% in the shell and the pressure drop is high,so the consumption of the fan or compressor is large.To increase the heat transfer performance on the intermediate cooler,the key is to strengthen the air convection of the shell and reduce the pressure drop.This article is focuses on the air-side heat transfer technologies used to produce energy efficiency and material savings,create the test plate form for the two intermediate coolers,by changing the mass flow of the air in the shell,circulating water temperature and flow rate in the pipe and other parameters to test the thermal performance and pressure drop.The experimental results show that the twisted tube intermediate cooler on the heat transfer performance is better than the conventional smooth tube segmental baffles intermediate cooler about 35%-87%,the low number is particularly significant.It will be a guide of the optimization design of the compressor cooling system.