Coupled experimental and numerical study of innovative nanofluids: from characterization to their performances in a prototype of heat exchanger

创新纳米流体的实验和数值耦合研究：从热交换器原型的表征到性能

• 批准号: 500415-2016
• 负责人: Poncet, Sébastien
• 金额: $ 2.89万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=662414
• 关键词: Coupled; experimental; numerical; study; innovative

Sigma Energy Storage (SES) Inc. has recently developed a prototype for the storage of electrical energy issue of overproduction from the network or from renewable sources. This energy is stored in two forms: compressed air and thermal energy. This second form involves a heat exchanger formed by two concentric tubes with compressed air on one side and a microfluid developed specifically for this application by SES. This project concerns the optimization of this exchanger and of the micro-/ nanofluid for a better transfer of thermal energy during the phases of storage and return of energy. The main disadvantage of microfluid is their propensity to clump and settle, thus losing any interest and resulting in greater consumption of the pump. This may also occur for nanofluids poorly or not functionalized. The project is divided into 4 actions ranging from the synthesis of nanoparticles, to the preparation and characterization of the thermophysical properties of nanofluids, to the dynamic study of these nanofluids in a finely instrumented heat exchanger developed at the University and its optimization by direct numerical simulations. By controlling the whole chain, the objective is to identify the nanofluid being both the most efficient in terms of heat capacity and thermal conductivity and the most stable, i.e. whose properties remain constant after a large number of cycles (24000 cycles for the prototype). This mixed 500 kW storage unit should make it possible to restore energy for about 20 hours at very low cost 0.05 CAD per kWh per cycle and turns out perfectly suited for remote areas (Northern) or dangerous areas (war) by examples.******

Sigma储能（SES）Inc.最近开发了一个原型，用于存储网络或可再生能源的电能问题。该能量以两种形式存储：压缩空气和热能。第二种形式涉及由两个同心管形成的热交换器，一侧有压缩空气，而SES专门为此应用而开发了一个微流体。该项目涉及该交换器和微流体的优化，以便在存储阶段和能量返回期间更好地传递热能。微流体的主要缺点是它们倾向于结块和沉降，从而失去了任何兴趣，并导致泵的消耗量更多。纳米流体也可能发生这种情况，或者不官能化。该项目分为4个动作，从纳米颗粒的合成到纳米流体的热物理性能的制备和表征，再到在大学在大学中开发的精美热交换器中这些纳米流体的动态研究及其优化的数值模拟。通过控制整个链，目的是确定纳米流体在热容量和导热率方面既是最有效的，又是最稳定的，即在大量周期后其性质保持恒定（原型的24000个周期）。这个混合的500千瓦存储单元应该使每周周期每千瓦时0.05 cad恢复能量约20小时，并通过示例非常适合偏远地区（北部）或危险区域（战争）。**************