| 摘要 |
<p>PURPOSE:To enhance evaporation capacity by providing a turbulent flow promoter in an evaporating pipe, so as to increase heat transfer quantity to low boiling point fluid to be heated. CONSTITUTION:Coiled turbulent flow promoters 22 are inserted in heat transfer pipes 20. Low boiling point fluid L such as LNG, LN2, or LPG to be supplied to a liquid header 10 enters the heat transfer pipes 20 and is heat-exchanged by a hot heat source fluid H thereby to heated and boiled. Then, such vapor in the pipes enters a vapor header 12. In this manner, the turbulent flow promoter 22 serves to form markable turnbulent flow in the liquid L in the heat transfer pipes 20, and allows the liquid to be always kept in contact with an inner wall of the pipes 20. Further, as liquid drop size is made small, the liquid may be readily evaporated and relieved of influence due to film boiling phenomenon. As a result, heat transfer quantity from the hot heat source H to the liquid L to be heated is widely increased, and accordingly evaporation quantity of the liquid L is remarkably increased.</p> |
