SBIR Phase I: Heat exchanger coating retrofit pre-treatment feasibility study

SBIR第一阶段：换热器涂层改造预处理可行性研究

• 批准号: 1520205
• 负责人: Adam Paxson
• 金额: $ 14.96万
• 依托单位: DropWise Technologies Corp.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1520205&HistoricalAwards=false
• 关键词: SBIR; Phase; Heat; exchanger; coating

This Small Business Innovation Research Phase I project will address the challenge of retrofit cleaning and pretreatment of steam condenser tubes prior to the deposition of a performance-enhancing coating. By eliminating the buildup of the insulating film of liquid that normally forms on condenser surfaces, the coating increases the vapor-side heat transfer coefficient by more than a factor of seven, allowing the condenser to pull more steam through the turbine. The successful application of this coating would enable significant increases in cycle efficiencies of in the installed base of steam power plants that generate the vast majority of national electricity, leading to substantial reductions in fuel costs, greenhouse gas emissions, and thermal pollution. This coating technology can be extended to other systems including desalination and heating, ventilating, air conditioning, and refrigeration (HVAC/R), which also rely on condensers to operate efficiently. The intellectual merit of this project comprises the acquisition of systematic knowledge of metal-oxide fouling and deposits in industrial environments, and the development of scalable pretreatment strategies to bridge the gap between laboratory and field-deployed coating depositions. Because this application of hydrophobic coatings has not been achieved at a commercial scale, there currently exists little to no systematic research on the condition of heat exchanger surfaces. The results of this study will be applicable to industrial coatings on industrial equipment beyond just heat exchangers, including distillation columns and moisture separators.

这个小型企业创新研究第一阶段项目将解决在沉积增强性能涂层之前对蒸汽冷凝器管子进行改装、清洁和预处理的挑战。通过消除通常在冷凝器表面形成的液体绝缘膜，涂层将蒸汽侧的换热系数增加了七倍以上，使冷凝器能够通过涡轮机输送更多的蒸汽。这种涂层的成功应用将显著提高蒸汽发电厂的循环效率，从而大幅降低燃料成本、温室气体排放和热污染。这种涂层技术可以扩展到其他系统，包括海水淡化和加热、通风、空调和制冷(HVAC/R)，这些系统也依赖冷凝器高效运行。该项目的学术价值包括获得工业环境中金属氧化物污垢和沉积物的系统知识，以及制定可扩展的前处理战略，以弥合实验室和现场部署的涂层沉积之间的差距。由于疏水涂层的这种应用还没有达到商业规模，目前几乎没有关于换热器表面状况的系统研究。这项研究的结果将适用于工业设备上的工业涂料，而不仅仅是热交换器，包括蒸馏塔和水分分离器。