저온 저장탱크 제작법 개발

Abstract

After a Cryogenic fluid has been liquefied, it must be stored to keep liquid state as long as possible. Since the performance of the vessel depends to a great extent of stored san upon the effectiveness of cylinder, insulation, and suspension, the high efficiency cryogenic storage vessel was specially designed and evaluated in this study as follows:

1) the commercial size, i.e. 1,100 liter, of double shell

vessel was designed and manufactured.

2) cryogenic materials were reviewed and applied

3) high vacuum adiabatic material was designed and tested

4) pressure controller and safety valve were designed

The test experiments was carried out to evaluate the

storage performance of cryogenic liquid nitrogen in the designed tank under the condition of constant temperature and humidity. The result showed that heat penetration rate from the ambient to the inside stored fluid was well below the 0.002, and therefore, the design was excellent to store the cryogenic liquid.