Study on the high-performance evaporator for enhanced gasification via microbubble clusters

Zhang Ruimin; Cai Haoting; Tong Wei; Liu Jun; Zhao Yugang

doi:10.7638/kqdlxxb-2024.0074

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Study on the high-performance evaporator for enhanced gasification via microbubble clusters

更新时间：2026-05-28

- Study on the high-performance evaporator for enhanced gasification via microbubble clusters
- Vol. 44, Issue 1, Pages: 118-127(2026)
- 作者机构：
  
  1. 上海理工大学能源与动力工程学院, 上海市动力工程多相流与传热重点实验室,上海,200093
  2. 深圳市英维克科技股份有限公司,深圳,518129
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2024.0074
  CLC： TK124
- Published：2026
- 稿件说明：
移动端阅览
张瑞敏, 蔡灏亭, 佟薇, 等. 微泡群强化汽化的高效蒸发器研究[J]. 空气动力学学报, 2026, 44(1): 118−127.

Zhang Ruimin, Cai Haoting, Tong Wei, et al. Study on the high-performance evaporator for enhanced gasification via microbubble clusters[J]. 2026, 44(1): 118-127.
张瑞敏, 蔡灏亭, 佟薇, 等. 微泡群强化汽化的高效蒸发器研究[J]. 空气动力学学报, 2026, 44(1): 118−127. DOI： 10.7638/kqdlxxb-2024.0074

Zhang Ruimin, Cai Haoting, Tong Wei, et al. Study on the high-performance evaporator for enhanced gasification via microbubble clusters[J]. 2026, 44(1): 118-127. DOI： 10.7638/kqdlxxb-2024.0074.

摘要

提高蒸发器汽化效率对能源管理与强化传热至关重要。为探索高效蒸发方法，本研究提出一种通过主动通入微气泡群以强化工质汽化的新技术。实验采用以微孔泡沫钛网制成的微气泡发生器，通过改变操作模式（持续加热/无加热）、泡沫钛平均孔隙（2

10 μm）及气体流量（1~15 NL/min）等条件，量化研究其对蒸发效果（出汽量、液体温降）的影响，并结合高速摄像对气泡动力学行为进行机理分析。结果表明，在无加热模式下，通入平均孔隙为10 μm、流速为15 NL/min的微泡群时，温度降幅达30 ℃，对应出汽量达到未通气泡时的38倍；在持续加热模式下，相同参数的微泡群使温度下降约15 ℃，出汽量提升至未通气泡时的1.7倍。机理研究表明，微气泡群的引入大幅增加了气液相变界面面积，其上升过程带来的扰动及内部不可凝气体对蒸汽分压的改变，共同加速了界面处的汽化过程，从而实现蒸发效率的提升。该方法无需外场作用或表面改性，操作简便，为强化蒸发提供了新途径。

Abstract

Enhancing the vaporization efficiency of evaporators is crucial for improved energy management and heat transfer enhancement. To explore efficient evaporation methods

this study proposes a novel technique that actively introduces microbubble clusters to intensify the vaporization of the working fluid. Experiments were conducted using a microbubble generator fabricated from microporous titanium foam mesh. The effects of key parameters

including operation mode (continuous heating/no heating)

average pore size of the titanium foam (2

10 μm)

and gas flow rate (1-15 NL/min)

on the evaporation performance (vapor output

liquid temperature drop) were quantitatively investigated. The associated bubble dynamics were analyzed via high-speed visualization. The results indicated that under the no-heating condition

the introduction of microbubble clusters with an average pore size of 10 μm and a flow rate of 15 NL/min led to a temperature drop of 30 ℃

while the corresponding vapor output increased by 38 times compared to the case without bubbles. Under the continuous heating mode

microbubbles with the same parameters caused a temperature decrease of approximately 15 ℃ and enhanced the vapor output by a factor of 1.7. Mechanistic studies reveal that the microbubble clusters substantially increase the vapor-liquid phase change interface area. The agitation caused by the rising bubbles and the alteration of vapor partial pressure due to the presence of non-condensable gas collectively accelerate the vaporization process at the interface

thereby enhancing the evaporation efficiency. This method requires no external fields or surface modifications

offering a simple and effective new approach for enhanced evaporation.

关键词

Keywords

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