使用碳量子点的碳化合物和地热能源联合生产系统的热传递改进:一种实验和建模方法
Yurany Villada1, Lady J Giraldo1, Diana Estenoz2
1Grupo de Investigación Fenómenos de Superficie Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia.
Nanomaterials (Basel, Switzerland)
|June 25, 2025
概括
碳量子点 (CQD) 在能源联合生产系统中增强热传递. 纳米流体中的CQD提高了导热率和有机兰金循环效率,改善了耗尽井的石油和电能输出.
科学领域:
- 能源工程 能源工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 碳化合物和地热能源联合生产系统面临着从枯竭井的高效传热方面的挑战.
- 优化传热对于最大限度地提高石油和电能输出至关重要.
研究的目的:
- 用碳量子点 (CQD) 改进能源联合生产系统中的热传输.
- 评估CQD对纳米流体热物理性质和有机兰金循环 (ORC) 效率的影响.
主要方法:
- 合成和商业CQD的特征包括尺寸,泽塔潜力和热容量等属性.
- 纳米流体使用油井盐水和CQDs在不同度 (100-1000 mg/L) 中制备.
- 测量了导热性,并开发了一个数学模型来预测纳米流体对ORC效率的影响.
主要成果:
- 添加CQD (高达500mg/L) 显著增加了纳米流体的导热率,高达60%.
- 1000mg/L的度导致由于纳米粒子聚合而导致的导热率下降.
- 开发的模型根据CQD度和盐水盐度准确预测了导热率和循环效率.
结论:
- CQD 有效提高纳米流体的热导率,用于能源共产.
- 最佳的CQD度 (大约为 550 mg/L) 可以将ORC效率提高高达18.6%.
- 这项研究为改善从耗尽的石油和地热井中回收能源提供了一条途径.
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