生物基阶段变化材料用于可持续发展
Mehdi Zadshir1,2, Byung-Wook Kim1, Huiming Yin1
1Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 W 120th Street, New York, NY 10027, USA.
Materials (Basel, Switzerland)
|October 16, 2024
概括
研究人员开发了一种可持续的方法,从培根脂肪中创建生物基相变材料 (生物PCM). 这些材料提供环保的热能存储,支持能源效率和减少温室气体排放.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 全球人口增长增加了能源和粮食需求,加剧了温室气体 (GHG) 排放.
- 使用相变材料 (PCM) 的被动热储存对于能源效率和减轻温室气体排放至关重要.
- 来自可再生能源的生物基PCM (生物-PCM) 为传统的基PCM提供了可持续的替代品.
研究的目的:
- 探索从动物脂肪和植物油中提取的生物PCM的潜力.
- 为了应对开发具有适当相变特性的生物PCM的挑战.
- 提出一个全面的过程,将培根脂肪转化为功能性的生物PCM.
主要方法:
- 从培根脂肪中提取脂质.
- 水解以分解脂肪分子.
- 合成后的修改包括化,紫外线交联和结晶,以调整相变性质.
主要成果:
- 培根脂肪成功地转化为生物PCM,具有无毒性,可用性和成本效益等优势特性.
- 化降低了过渡温度,同时略有改善了潜热.
- 紫外线交联和结晶增强了相位过渡温度和潜在热量.
结论:
- 来自培根脂肪的生物PCM是热能存储的可行,可持续的选择.
- 拟议的合成过程允许量身定制的相变特性.
- 未来的研究应侧重于经济高效的大规模制造,工艺优化,同时提高导热率和潜在热容量.
更多相关视频
相关概念视频
Phase Transitions: Sublimation and Deposition
17.0K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
17.0K
Design Example: Sustainability in Concrete Building
161
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
161
Environmental Applications of Microorganisms
3
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
3
Phase Transitions: Melting and Freezing
12.3K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
12.3K
Sublimation
724
Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...
724


