Scholarlink

<p>This paper reviews surface improvement strategies to evaluate pool boiling heat transfer enhancement on horizontal tubes. This study focused on pool boiling, an exceptionally effective heat transfer technique in industrial systems, including nuclear reactors, refrigeration systems, and heat exchangers. The focus was on passive surface changes such as micro- and nanoscale roughening, porous coatings, and adjustments in wettability to enhance nucleation site density, capillary-driven liquid flow, and bubble dynamics. Through the review, the research showed that surface roughness can augment nucleation site density by as much as 67.5%. The heat transfer coefficient (HTC) increased by 17%, significantly improving heat transfer efficiency. Porous coatings enhance the HTC by 400% and the critical heat flux (CHF) by more than 100%. Modifications in wettability were seen to enhance bubble production and detachment, resulting in a 6.8% improvement in heat transfer efficiency. Microfin and hybrid configurations enhanced bubble dynamics, promoting stable boiling performance. Nanostructure methodologies, including femtosecond and picosecond laser surface treatment, have demonstrated significant promise in improving both HTC and CHF, contingent upon the thickness and distribution of nanoparticle layers. Notwithstanding the long-term surface durability and scalability obstacles, the current study highlights the capacity of these strategies&#xa0;to enhance heat transfer in industrial applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Improving heat transfer in pool boiling: a review of surface modifications on horizontal tubes

  • 期刊论文

  • 发表日期：

    2025年7月12日

查看全文
  • Ghaith Moneem Fadhala,
  • Hassanian Ghani Hameed

摘要

This paper reviews surface improvement strategies to evaluate pool boiling heat transfer enhancement on horizontal tubes. This study focused on pool boiling, an exceptionally effective heat transfer technique in industrial systems, including nuclear reactors, refrigeration systems, and heat exchangers. The focus was on passive surface changes such as micro- and nanoscale roughening, porous coatings, and adjustments in wettability to enhance nucleation site density, capillary-driven liquid flow, and bubble dynamics. Through the review, the research showed that surface roughness can augment nucleation site density by as much as 67.5%. The heat transfer coefficient (HTC) increased by 17%, significantly improving heat transfer efficiency. Porous coatings enhance the HTC by 400% and the critical heat flux (CHF) by more than 100%. Modifications in wettability were seen to enhance bubble production and detachment, resulting in a 6.8% improvement in heat transfer efficiency. Microfin and hybrid configurations enhanced bubble dynamics, promoting stable boiling performance. Nanostructure methodologies, including femtosecond and picosecond laser surface treatment, have demonstrated significant promise in improving both HTC and CHF, contingent upon the thickness and distribution of nanoparticle layers. Notwithstanding the long-term surface durability and scalability obstacles, the current study highlights the capacity of these strategies to enhance heat transfer in industrial applications.