EXPERIMENT STUDY ON THE EFFECT OF NANO-SCALE PARTICLE ON CONDENSATION PROCESS
The temperature and the pressure of condenser as well as the heat exchange performance at the standard cooling and warming temperature conditions have been measured in order to investigate the effect of nano-scale particles on condensation process. The refrigerant R410A is used, and the Ni nano-scale particles are mixed with Ze-GLES68 lubrication oil. The mass of Ni nano-scale particle is 1％ to the enclosed mass of R410A. To compare the effect of nano-scale particle on condensation process, an uniform speed compressor and a capillary tube type air conditioner is used. As a result, it is found that sub-cool degree of the condenser increased 1.8 ℃ as compared to the no Ni nano-scale particles case on the same condensation pressure and the same refrigerant flow rate conditions. We discuss the nano-scale particles behavior between lubrication oil and refrigerant, the role on heat transfer enhancement and the flow regimes for the forced convection when R410A is condensing in the copper tube.
K.WANG K.SHIROMOTO T.MIZOGAMI
Fujitsu General Institute of Air-Conditioning Technology LTD.213-5802, 1116 Suenaga, Takatsu-ku, Kawasaki, Japan
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）