microFLUX - Microchannel Fabrication for Large Upgraded eXchangers

microFLUX - 大型升级换热器的微通道制造

• 批准号: 133251
• 金额: $ 8.33万
• 依托单位: OXFORD NANOSYSTEMS LTD
• 依托单位国家: 英国
• 项目类别: Feasibility Studies
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=133251
• 关键词: microFLUX; Microchannel; Fabrication; Large; Upgraded

"Heat exchangers are used in a range of domestic and industrial applications from Air Conditioning, refrigeration and domestic heating, to chemical refinement and electricity production. Heat exchangers that boil a liquid are called two phase heat exchangers and are more commonly used in cooling applications. Currently, these heat exchangers are very inefficient at boiling fluids. To boil water at 100oC the heating surface of the exchanger has to reach 120oC and this inefficiency continues even when the liquid has started to boil.Microchannels are an interesting solution to these inefficiencies. Microchannels provide sites for bubbles to form on a surface and limit their size. This means that once the bubbles reach their maximum size they are forced off the surface and fresh, cool liquid fills the space. This increased rate of fluid replenishment allows the surface to be cooled more efficiently. Microchannels are not easily created as the techniques used to create them require open and flat surfaces and can be very time consuming. They can also be damaged in manufacturing which means they cannot be applied prefabrication. This makes them impractical for commercial use.microFLUX is a technology currently being investigated by Oxford nanoSystems as a method for improving the efficiency of these heat exchangers. microFLUX is a technique which allows channels, only a few hundred microns wide, to be cut into the internal surface of the heat exchanger. This overcomes the issues associated with microchannels and could allow them to be a real solution to the heat exchanger industry.The outcome of the microFLUX technology will be more efficient heat exchangers which are smaller, using less material in their construction, and consume less power to operate, reducing their carbon footprint. As global temperatures rise the amount of energy we use on cooling is expected to increase. microFLUX has the potential to minimise the impact this new demand will have."

“热交换器用于一系列家庭和工业应用，从空调，制冷和家庭供暖，到化学精炼和电力生产。使液体沸腾的热交换器被称为两相热交换器，并且更常用于冷却应用。目前，这些热交换器在沸腾流体方面效率非常低。为了使水在100 oC沸腾，换热器的加热表面必须达到120 oC，即使液体已经开始沸腾，这种低效率也会持续下去。微通道是解决这些低效率的有趣解决方案。微通道为气泡在表面上形成提供场所并限制其尺寸。这意味着，一旦气泡达到最大尺寸，它们就会被迫离开表面，新鲜，凉爽的液体就会充满空间。这种增加的流体补充速率允许更有效地冷却表面。微通道不容易创建，因为用于创建它们的技术需要开放和平坦的表面，并且可能非常耗时。它们也可能在制造过程中损坏，这意味着它们不能用于预制。microFLUX是牛津纳米系统公司目前正在研究的一种技术，作为提高这些热交换器效率的方法。microFLUX是一种允许在热交换器的内表面中切割仅几百微米宽的通道的技术。这克服了与微通道相关的问题，使其成为换热器行业的真实的解决方案。microFLUX技术的成果将是更高效的换热器，这些换热器体积更小，使用更少的材料，运行消耗更少的电力，减少碳足迹。随着全球气温的上升，我们用于冷却的能源量预计将增加。microFLUX有可能将这一新需求的影响降到最低。"