Discussion on design of defrosting system for liquid oxygen air-temperature vaporizer
SHANG Yanxia
GUO Fanghui
Abstract：Objective:The liquid oxygen air-temperature vaporizer will absorb a lot of heat in the process of turning into gas.In order to avoid the adverse effect on the gasification rate of liquid oxygen when the surface of the vaporizer is iced,an intelligent defrost device is developed.Methods:The air conditioner in the duty room of the hospital liquid oxygen station was used to defrost the air-temperature vaporizer and inhibit ice and frost formation.By repeatedly circulating cooling and heating,the frost and ice layer on the surface of the carburetor was melted and the water was discharged to ensure the normal operation of the vaporizer under the most unfavorable working conditions around the clock.Results:As long as the frost thickness on the outer surface of the rib outlet reached more than 7 mm,the outlet temperature of the vaporizer cannot be guaran-teed.Controlling the ambient temperature at 10℃can solve the problem of frost formation during all-weather operation of the air-temperature vaporizer.Conclusion:It is feasible to use air conditioner in the duty room of the liquid oxygen station to defrost the air-temperature vaporizer and suppress ice or frost formation,which is an effective solution to the serious frost and ice formation in winter in the air-temperature vaporizer of the liquid oxygen station that has been put into use.
Keywords：liquid oxygen air-temperature vaporizersuppress frost and ice formationreverse circulation defrosting method
Publication Date：2024-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 50-53 )