... heat transfer accounted for one-loop pressure boundary area of 80%,at present,foreign countries areusing lnconel 690 alloy tube as a heat pipe ... power stationsNuclear power diodes,transistors 00Cr19Ni10(Z2CN1810) two-loop heat-exchange tubes for nuclear power stations,located between the ... ,stable performace,the same batch small differences in heat pipe performance.4,from Germany to introduce an eight- ...