Research Initiation: Analysis of Waste Heat Recovery by Phase-Change Particles

本项目的目标是分析其有效性， 紧凑的创新方法，回收和再利用 浪费了典型燃烧系统的能量。 这种能量回收 和再利用是通过采用小颗粒封装， 相变材料 为了成功地完成拟议的 目标，有必要分析流体动力学和热 传递问题的理论和实验。 理论 涉及守恒方程的数值解 质量，动量，能量和辐射的方程 这些实验 它采用固体颗粒来验证实验中使用的经验关系， 理论，包括气体的速度和温度的测量 和颗粒物。 拟议的工作可能对电力和 工业生产出于几个原因。 首先，它的使用，无论是作为 改造或新安装，应产生显着的节省 与传统的固定式或旋转式热交换器相比， 第二、 该单元是可操作的，并且颗粒可从未燃烧的燃料中清除， 污垢上的连续的基础上，从而提高了热力学 转换效率和更好地控制氮氧化物 阵 最后，颗粒可以用作洗涤介质， 去除颗粒物和气体污染物，从而为 双重目的：回收浪费的能源和控制污染物。

The objective of this project are to analyze the effectiveness and compactness of an innovative approach for recovering and reusing the wasted energy from a typical combustion system. Such energy recovery and reuse are achieved by employing small particles encapsulating a phase-change material. To successfully accomplish the proposed objectives, it is necessary to analyze the fluid dynamics and heat transfer problem both theoretically and experimentally. The theory involves a numerical solution to a formulation of the conservation equations for mass, momentum, energy and radiation. The experiments, which employ solid particles to verify empirical relations used in the theory, include measurements of velocities and temperatures of the gas and particles by standard methods. The proposed work could be of significant interest to power and industrial plants for several reasons. First, its use, either as retrofitted or in new installations, should yield significant savings in fuel over conventional fixed or rotary heat exchangers. Second, the unit is operable and particles cleanable from unburnt fuel and dirt on a continuous basis, resulting in improved thermodynamic conversion efficiencies and better control of the oxides of nitrogen formation. Finally, the particles may act as scrubbing media for removal of particulate matter and gaseous pollutants, thus serving a dual purpose: recovery of wasted energy and pollutant control.