Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Mechanism of heat transfer01:19

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 Transfer01:14

Mechanisms of Heat Transfer

284
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...
284
Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

3.2K
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...
3.2K
Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

4.2K
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.
4.2K
Thermal expansion and Thermal stress: Problem Solving01:27

Thermal expansion and Thermal stress: Problem Solving

1.1K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
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...
1.1K
Mass Concreting01:22

Mass Concreting

59
Mass concreting refers to the process of placing large volumes of concrete, such as in gravity dams. The heat generated during the cement hydration process and differential cooling rates within the concrete mass can lead to a temperature gradient, which can result in thermal cracks in the concrete mass.
To reduce the risk of such cracking, the concrete mix may incorporate low-heat cement and pozzolans to reduce the temperature rise. Pre-cooled angular aggregates and water-reducing admixtures...
59

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Dual-path suppression of thermal and wetting-driven steel corrosion for marine structure.

Nature communications·2026
Same author

Enhanced radiative cooling with <i>Janus</i> optical properties for low-temperature space cooling.

Nanophotonics (Berlin, Germany)·2024
Same author

Designing Nanoporous Polymer Films for High-Performance Passive Daytime Radiative Cooling.

ACS applied materials & interfaces·2024
Same author

Phase Change Material Enhanced Radiative Cooler for Temperature-Adaptive Thermal Regulation.

ACS nano·2023
Same author

Triboelectric wetting for continuous droplet transport.

Science advances·2022
Same author

Achieving ultra-stable and superior electricity generation by integrating transistor-like design with lubricant armor.

Innovation (Cambridge (Mass.))·2022
Same journal

Vertically Stacked Indium Gallium Zinc Oxide-Based Three-Dimensional Integrated Circuits.

ACS nano·2026
Same journal

Tunable Nanoparticle Thin-Film Reveals Distance Dependence of Auger-Mediated Radiation Enhancement in Diffuse Midline Glioma.

ACS nano·2026
Same journal

G-Quadruplex Network Engineering in Ionogels: Realizing Robust Biosensing Interfaces for Plant Electrophysiology.

ACS nano·2026
Same journal

Announcing the 2026 <i>ACS Nano</i> Lectureship and <i>ACS Nano</i> Impact Award Laureates.

ACS nano·2026
Same journal

Ultrafast Self-Assembly of Zeolitic Imidazolate Framework-8 Enables Antibody Orientation for Ultrasensitive Lateral Flow Immunoassays.

ACS nano·2026
Same journal

Interfacial Salt Engineering with Alkali and Ammonium Additives for Stable Pure-Blue Perovskite Light-Emitting Diodes and Micropatterned Displays.

ACS nano·2026
查看所有相关文章

相关实验视频

Updated: Jun 12, 2025

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
10:36

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption

Published on: November 3, 2023

1.4K

粒子-固体过渡架构,用于高效的被动建筑冷却.

Xiantong Yan1, Meng Yang2, Wenhui Duan3

  • 1Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China.

ACS nano
|September 25, 2024
PubMed
概括
此摘要是机器生成的。

一个新的水泥型辐射冷却使用粒子固体过渡架构来有效地冷却建筑物. 这一创新提高了材料的兼容性,并提供了大量的冷却功率,不需要电力,为实际的被动白天辐射冷却 (PDRC) 应用铺平了道路.

关键词:
建筑的兼容性 建筑的兼容性节能建筑物 节能建筑物接口兼容性 接口兼容性光学异构性是指光学异构性.粒子-固体过渡架构的结构.下环境白天的辐射冷却.

更多相关视频

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
04:35

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

1.8K
Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
11:11

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation

Published on: May 2, 2016

11.0K

相关实验视频

Last Updated: Jun 12, 2025

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
10:36

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption

Published on: November 3, 2023

1.4K
Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
04:35

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

1.8K
Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
11:11

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation

Published on: May 2, 2016

11.0K

科学领域:

  • 材料科学 材料科学 材料科学
  • 可持续能源 可持续能源
  • 建筑物理 建筑物理

背景情况:

  • 建筑冷却对全球能源消耗和碳排放做出了重大贡献.
  • 无源日间辐射冷却 (PDRC) 提供了无电的解决方案,但面临着材料兼容性挑战,特别是与水泥材料.
  • 现有的PDRC技术往往由于与混凝土等建筑基板的整合不佳而受到影响.

研究的目的:

  • 开发一种与建筑基板兼容的新型水泥型辐射冷却材料.
  • 克服现有的PDRC材料在集成和耐用性方面的局限性.
  • 通过创新的建筑设计,实现建筑物高效的被动冷却.

主要方法:

  • 开发一个粒子-固体过渡架构 (PSTA) 用于水泥辐射冷却.
  • 采用全无机材料组合,以提供抗紫外线和基板兼容性.
  • 界面粘合强度,太阳反射率和中红外发射率的表征.

主要成果:

  • 与对照材料相比,PSTA显著提高了界面剪切强度 (0.93 MPa).
  • 实现了大约6.6°C的显著的环境下温度下降.
  • 在直接太阳辐射下 (∼680 W/m2) 的冷却功率约为92.8 W/m2.
  • 该PSTA设计确保了高太阳反射率和强的中红外发射.

结论:

  • 拟议的质辐射冷却护甲有效地解决了PDRC应用中的材料不匹配问题.
  • PSTA设计提供了一个可扩展和实用的方法,用于将PDRC技术集成到建筑材料中.
  • 这一进步促进了对建筑物的被动冷却策略的广泛采用,减少了能源消耗和环境影响.