Within the range of experiment, increasing fin height or decreasing spacing of fins of petal-shaped fin tube is helpful to improve the performance of heat transfer enhancement.
在实验范围内，花瓣管翅片高度的增加、翅间距的减少都有利于传热强化性能的提高。
2
The petal-shaped composition section can effectively improve the utilization rate of raw materials for forming iron chips, and is favorable for the production of the iron chips.
本实用新型不仅能有效提高铁芯片成型的原料利用率，而且便于铁芯片的生产 。
3
The furniture pieces are jazzed up with petalshaped foam head boards and foot boards.