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相关概念视频

Thermal Insulation in Masonry Walls01:22

Thermal Insulation in Masonry Walls

458
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
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Mechanism of heat transfer01:19

Mechanism of heat transfer

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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...
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Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

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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...
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Mechanisms of Heat Transfer01:14

Mechanisms of Heat Transfer

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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...
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Thermosensation01:43

Thermosensation

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

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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.
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相关实验视频

Updated: Jan 9, 2026

Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
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热响应式智能窗口与热储效应相结合

Tianle Cheng1, Xusheng Zhang1,2, Zeyu Niu1,2

  • 1Department of Materials Science and Engineering, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG), Southern University of Science and Technology (SUSTech), No. 1088, Xueyuan Rd., Shenzhen, Guangdong, 518055, China.

Small (Weinheim an der Bergstrasse, Germany)
|December 8, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种双层热响应智能窗口 (DLTS),该窗口将光控制与太阳能储热集成在一起. 这些先进的智能窗户积极管理能源,为建筑物提供显著的能源节约.

关键词:
普尼帕姆 (PNIPAM) 是一个阶段变化材料 阶段变化材料太阳能储存和释放的热量.超级冷却 超级冷却热敏响应式智能窗户

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Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
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Thermocapillary Convection Space Experiment on the SJ-10 Recoverable Satellite
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相关实验视频

Last Updated: Jan 9, 2026

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Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
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科学领域:

  • 材料科学 材料科学 材料科学
  • 能源科学 能源科学
  • 建筑技术 建筑技术 建筑技术

背景情况:

  • 热敏智能窗户浪费太阳能,限制它们在碳中和建筑中的使用.
  • 现有的智能窗户主要作为被动光调节器.

研究的目的:

  • 开发一个双层热响应智能窗口 (DLTS),将光学调节与太阳能储热集成在一起.
  • 增强建筑物主动能源管理系统中的智能窗户.

主要方法:

  • 一个DLTS的制造,包括一个热色聚N-异烯酸胺 (PNIPAM) 层和一个可控制的超冷化六水合物 (CCH) 相变层.
  • 调整PNIPAM的热反应温度 (Tr) 从7到70°C使用二甲基 (DMA) 和葡萄酸 (TA).
  • 使用乙醇和尿素调整CCH的Tr从9到31°C,使其能够覆盖季节性温度变化.

主要成果:

  • 实现了PNIPAM报告中最广泛的Tr范围,以及首个涵盖CCH季节性变化的Tr范围.
  • 证明了CCH的超冷程度为50°C,在广泛的温度变化中保持透明度.
  • 在CCH中报告了199 Jg-1的高潜热储存,可用于室内加热.
  • 观察到显著的太阳能调制 (ΔTsol = 70.1%) 由于双层设计与匹配的Tr点.

结论:

  • 通过将光学调节与太阳能储热相结合,DLTS将智能窗户转化为主动能源管理系统.
  • 与普通玻璃相比,DLTS在HVAC系统中提供了显著的年度能源节约 (超过20%).
  • 这项技术有可能提高碳中和建筑物的能源效率.