【摘要】 <正> 氟里昂R12是目前生产中大量应用着的制冷工质之一,由于其优良的性能和低廉的造价,长期以来一直是制冷,空调及其它领域中应用最广泛的工质。近年来出现的混合工质,有很多也是用R12作为其组分之一。在国内空调,制冷领域内使用的R12工质,都是我国自己生产的。国产R12的质量如何、热力性能如何,和国外同类产品比较有多大差更多还原

【Abstract】 In the paper, the results of experimental study for E12 are reported. The samples for experiments were the products of three factories in China. The experiments were taken in the temperature range of 243 K through 443 K and the pressure up to 4 MPa. The data were fitted to the M-H equation and the vapor pressure equation, and the average deviations of pressure were 0.26% and 0.41% respectively as compared with the Du Pont data.更多还原