Energy saving. Energy saving is an important indicator of today’s air conditioners. Conventional heat exchanger is difficult to manufacture high-grade products such as Ⅰ energy efficiency standards, micro-channel heat exchanger will be the best choice to solve the problem.
Outstanding heat transfer performance. In home air conditioning, when the size of the flow channel is less than 3mm, the gas-liquid two-phase flow and phase change heat transfer law will be different from the conventional larger size, the smaller the channel, the more obvious this size effect. When the inner diameter of the tube is as small as 0.5~1mm, the convective heat transfer coefficient can be increased by 50%~100%. This enhanced heat transfer technology for air conditioning heat exchanger, appropriate changes to the heat exchanger structure, process and air side of the enhanced heat transfer measures, is expected to effectively enhance the heat transfer of air conditioning heat exchanger, improve its energy-saving level.
Promotion potential. Microchannel heat exchanger technology in the field of air conditioning manufacturing and the potential to promote air water heaters, which can greatly enhance the competitiveness of products and sustainable development of enterprises.
Compared with conventional heat exchangers, microchannel heat exchangers not only small heat transfer coefficient, high heat transfer efficiency, can meet higher energy efficiency standards, and has excellent pressure resistance, can be CO2 for mass cooling, in line with environmental requirements, has attracted widespread attention of domestic and international academic and industrial circles. The key technology of microchannel heat exchanger – the production method of microchannel parallel flow tube has become mature in China, which makes it possible to use microchannel heat exchanger on a large scale.