相关实验视频
Updated: Jul 11, 2026

Design and Optimization Strategies of a High-Performance Vented Box
Published on: June 9, 2023
使用CFD,RSM和增强的登算法优化纳米状体形状的潜热热能储能单元
Tao Hai1,2, Ihab Omar3, As'ad Alizadeh4,5
1Artificial Intelligence Research Center (AIRC), College of Engineering and Information Technology, Ajman University, P.O.Box: 346, Ajman, United Arab Emirates.
使用纳米增强相变材料 (NePCMs) 优化纳米潜热热能储存 (LHTES) 单元,大大缩短了融时间. 基于碳的纳米材料在更快的充电和最小的能量储存损失之间提供了平衡.
科学领域:
- 能源科学与工程 能源科学与工程
- 材料科学 材料科学 材料科学
- 计算流体动力学的流体动力学.
背景情况:
- 传统的潜热热能储存 (LHTES) 系统由于相变材料 (PCM) 的热导率较低而受到影响,从而限制了效率并增加了充/放电时间.
- 提高LHTES的性能对于太阳能,工业废热回收和建筑温度调节等应用至关重要.
研究的目的:
- 开发和优化纳米状外形状LHTES单元的框架,其中包含纳米增强相变材料 (NePCMs).
- 研究翅膀几何和纳米材料特性对化时间和总储存能量的影响.
- 确定最佳的设计配置,优先考虑融时间,储存能量或两者之间的平衡.
主要方法:
- 这是一种混合方法,结合了计算流体动力学 (CFD) 模拟,响应表面方法 (RSM) 和增强的登 (EHC) 优化技术.
- 分析关键的设计变量:翅膀几何 (数量,长度,体积),纳米材料度,以及各种纳米材料 (金属,氧化物,碳基).
- 使用RSM来预测性能指标的多项式模型的开发.
主要成果:
- 来自RSM的多项式模型准确地预测了总储存的能量和化时间.
- 碳基纳米材料 (石墨烯纳米板,多壁碳纳米管) 提供了最佳的权衡,使化速度更快,储存能量损失最小.
- 细体积分比纳米材料体积分在确定能量存储能力方面是一个更主导的因素.
结论:
- 优化的纳米型LHTES单元显示了显著改善的热性能.
- 确定了优先考虑融时间 (91.76 秒,63.03 kJ),储能 (222.3 秒,66.15 kJ) 或均衡方法 (137.4 秒,64.67 kJ) 的特定最佳配置.
- 该研究为设计用于高效热能管理的先进LHTES系统提供了有价值的见解.
更多相关视频
10:36Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
Published on: November 3, 2023
04:35Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
Published on: July 5, 2024
相关概念视频
Mechanisms of Heat Transfer I
Mechanisms of Heat Transfer II
Thermal expansion and Thermal stress: Problem Solving
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
Energy Conservation and Bernoulli's Equation
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
Mechanisms of Heat Transfer
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.
Lagrange Multipliers: Problem Solving