Articles techniques et présentations

The material wood is frequently used in construction industry for several elements such as window frames. However, as a hygrothermal material, wood is sensitive to moisture induced damage. In this context, the moisture uptake of wood based windows logged with an integrated relative ... En savoir plus

In this work, we study the design of a new integrated system for Solar Water Heating that combines the solar thermal energy collection (primary circuit) with the heat storage (secondary circuit) into the same device. We have performed different finite element method simulations using ... En savoir plus

Hydrogen has the potential to be an important source of clean energy, but the development of efficient and cost-effective methods for storing hydrogen is a key challenge that needs to be addressed in order to make widespread use of hydrogen as an energy source possible. There are ... En savoir plus

Smart materials, due to their ability to undergo structural and functional changes in response to external stimuli have garnered significant attention in different applications. Among these, metal hydrides have been extensively studied as potential candidates for hydrogen storage. ... En savoir plus

Recently adsorptive storage has been identified as the most promising low-pressure (3.5 - 4.0 MPa) alternative for storing natural gas for vehicular use. However in order to successfully implement this technology, the filling and discharge characteristics of the adsorbent bed must be ... En savoir plus

A combined heat and power (CHP) plant generates both electricity and useful heat. A heat storage tank enables a decoupling of electricity and heat delivery. In this study a cylindrical hot water storage tank is considered. Charging, holding time and discharging are numerically simulated ... En savoir plus

Structural Supercapacitors (SSC) are an important group of Multifunctional Energy Storage Composites (MESC) and can potentially play a significant role in lightweight design of aerospace and automotive applications [1]. Therefore, it is important to build accurate models based on the ... En savoir plus

The problem of storage, and release of thermal energy is an important challenge in various industrial fields. Several systems for thermal energy storage exist like phase change materials (PCM) and thermochemical storage [1]. The first system usually addresses short term storage (day ... En savoir plus

Due to computational considerations most models of lithium storage particles in batteries incorporate spherical particles. However most storage particles used in battery electrodes tend to be irregular in shape with sharp edges and extended aspect ratios. The change of the relative ... En savoir plus

随着电动汽车和储能系统的迅速发展，高功率电池与超级电容器的散热问题愈发突出。传统空冷或常规液冷方式难以兼顾紧凑空间中的高效散热与低能耗需求，因此亟需新的液冷板设计理念。针对这一挑战，本文提出了一种基于拓扑优化的液冷板设计方法，通过结构生成与算法优化的耦合，实现散热能力与流动效率的协同提升。 在方法上，首先建立拓扑优化密度模型，将温度控制与流阻约束同时纳入目标函数。随后，引入多目标优化框架，以电池最高温度、温差及压降为核心指标，利用代理模型与 NSGA-II 算法对设计域进行迭代演化，从而生成具有复杂分支与仿生特征的流道结构。进一步结合动态 TOPSIS 决策方法 ... En savoir plus