非互惠的热循环元器件设备
Ran Ju1,2,3,4, Pei-Chao Cao1,2,3,4, Dong Wang1,2,3,4
1Interdisciplinary Center for Quantum Information, State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310027, China.
Advanced materials (Deerfield Beach, Fla.)
|November 27, 2023
概括
研究人员开发了一种基于对流的新型热媒介设备,用于非互惠的热循环. 这一突破统一了动态和稳定状态的热非互惠性,为热管理和超越提供了新的可能性.
科学领域:
- 热力学是一种热力学.
- 超材料科学科学 超材料科学
- 热传递热量转移的方法
背景情况:
- 传统的热非互惠性依赖于非线性或时间变化的参数,通常需要单独处理动态和稳定状态条件.
- 现有的方法面临的局限性是由于温度依赖的材料特性和质量保存定律.
- 以前的研究已经将动态和稳定状态的热非互惠性作为不同的现象来处理.
研究的目的:
- 建立适用于动态和稳定状态条件的热散射的统一理论.
- 引入一种基于对流的热媒介设备,能够实现非互惠的热循环.
- 展示一种在三端口系统中实现热非互惠的新机制.
主要方法:
- 开发一个统一的热散射理论.
- 基于对流的热介质设备的设计和制造.
- 使用热流量测量和散射矩阵分析进行实验验证.
主要成果:
- 拟议的热半导体设备成功地支持动态和稳定状态的非互换热循环.
- 确定了一种独特的非互惠机制,涉及多重散射,用于稳定状态运行.
- 该装置证明了热流的显著隔离,验证了实验结果.
结论:
- 已经建立了热非互惠的统一框架,弥合了动态和稳定状态的现象.
- 开发的热媒介设备为动态和稳定状态热信号提供可调节的非互惠性.
- 这些发现为更广泛的传热问题以及其他基于波的领域 (如声学和力学) 提供了可应用的见解.
相关概念视频
Mechanism of heat transfer
1.2K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.2K
Mechanisms of Heat Transfer
333
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
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...
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...
333
Mechanisms of Heat Transfer II
3.3K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.3K
Mechanisms of Heat Transfer I
4.3K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.3K
Body Temperature
964
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
964
Heat Flow and Specific Heat
5.4K
Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
5.4K


