A study on the air vaporizer for liquefied natural gas with super low temperature

This paper was studied for optimum design of the used vaporizer at a satellite station. Generally, the freezing of air is created by temperature drop on the vaporizer surface. This problem is increasingly appeared as time passed and humidity rise. In addition, the freezing makes an ice layer and heat transfer on vaporizer is decreased by the ice layer form into the adiabatic condition. By this reason, recent vaporizer system is installed as parallel type, and it takes tree times of vaporizer capacity. But this vaporizer system has much installation costs and is restricted by some space. To solve this problem is very important, and main impacts of vaporizer can be the circumference distance or angle between fin and fin, length, thickness, materials, temperature conditions inner vaporizer and so on. This paper was carried out the numerical analysis and experiment to get the optimum design information of vaporizer fin for liquefied natural gas with super low temperature. The geometry of numerical analysis and experiment were identical. Used parameters are the circumference distance or angle between fins, and fin thickness of vaporizer. Results on numerical analysis were represented about the correlations with the ice layer thickness of vaporizer surface according to the temperature variations inner vaporizer, fin thickness and circumference distance between fins of vaporizer.