当前研究发现,深海水道中储集着大量的油气资源。但是,由于水道处于深海底部,不能直接观察出水道的具体形态,因此对水道形态的展示成为深海油气开发的一项基本工程。基于此,利用三维处理技术与ArcGIS Model Builder应用程序构建了深海...当前研究发现,深海水道中储集着大量的油气资源。但是,由于水道处于深海底部,不能直接观察出水道的具体形态,因此对水道形态的展示成为深海油气开发的一项基本工程。基于此,利用三维处理技术与ArcGIS Model Builder应用程序构建了深海水道制图的复杂处理过程模型,并最终实现了数据的可视化表达。相对于传统的处理方法,ArcGIS模型构建器大大简化了数据处理及展示,对提升水道三维图件制作的自动化和流程化水平具有一定的现实意义。展开更多
Thermal energy storage (TES)has the potential to facilitate the deployment of renewable energy through addressing the demand-supply mismatch,ultimately leading to the decarbonisation of heat supply. Among the TES tech...Thermal energy storage (TES)has the potential to facilitate the deployment of renewable energy through addressing the demand-supply mismatch,ultimately leading to the decarbonisation of heat supply. Among the TES technologies,latent heat based TES with composite phase change materials (PCMs)has shown great potential,which has attracted significant attention in recent years.However,large scale and reliable manufacturing methods for composite PCMs are still largely lacking.Here,we present a study aimed to develop,for the first time,an extrusion process capable of fabricating high density polyethylene based graphite PCM composites at a high throughput and with enhanced thermal properties.The PCM composites were fabricated under different extrusion process parameters and characterized for their thermo-physical properties by multiple techniques including differential scanning calorimetry,thermal gravitational analyzer,and Fourier transform infrared spectroscopy.The results show that the extrusion process has the potential to fabricate PCM composite bars in a continuous fashion with a manufacturing throughput higher than traditional method;the fabricated PCM composites show enhanced properties (e.g.up to +70% increase in thermal diffusivity);and there is a clear link between extrusion process parameters and PCMs properties.Microstructural analyses show a more homogeneous structure with a lower extrusion speed;whereas a high extrusion speed gives a more microscopically heterogeneous structure with visible graphite agglomerates distributed relatively homogeneous macroscopically;and a higher graphite content gives a larger agglomerate size.The results of this work suggest that the elucidation of composition-process-property relationships is crucial:for a given formulation (composition), only through fine tuning of high throughput manufacturing process can make it possible to achieve the desired performance of the PCM composites.展开更多
文摘当前研究发现,深海水道中储集着大量的油气资源。但是,由于水道处于深海底部,不能直接观察出水道的具体形态,因此对水道形态的展示成为深海油气开发的一项基本工程。基于此,利用三维处理技术与ArcGIS Model Builder应用程序构建了深海水道制图的复杂处理过程模型,并最终实现了数据的可视化表达。相对于传统的处理方法,ArcGIS模型构建器大大简化了数据处理及展示,对提升水道三维图件制作的自动化和流程化水平具有一定的现实意义。
文摘Thermal energy storage (TES)has the potential to facilitate the deployment of renewable energy through addressing the demand-supply mismatch,ultimately leading to the decarbonisation of heat supply. Among the TES technologies,latent heat based TES with composite phase change materials (PCMs)has shown great potential,which has attracted significant attention in recent years.However,large scale and reliable manufacturing methods for composite PCMs are still largely lacking.Here,we present a study aimed to develop,for the first time,an extrusion process capable of fabricating high density polyethylene based graphite PCM composites at a high throughput and with enhanced thermal properties.The PCM composites were fabricated under different extrusion process parameters and characterized for their thermo-physical properties by multiple techniques including differential scanning calorimetry,thermal gravitational analyzer,and Fourier transform infrared spectroscopy.The results show that the extrusion process has the potential to fabricate PCM composite bars in a continuous fashion with a manufacturing throughput higher than traditional method;the fabricated PCM composites show enhanced properties (e.g.up to +70% increase in thermal diffusivity);and there is a clear link between extrusion process parameters and PCMs properties.Microstructural analyses show a more homogeneous structure with a lower extrusion speed;whereas a high extrusion speed gives a more microscopically heterogeneous structure with visible graphite agglomerates distributed relatively homogeneous macroscopically;and a higher graphite content gives a larger agglomerate size.The results of this work suggest that the elucidation of composition-process-property relationships is crucial:for a given formulation (composition), only through fine tuning of high throughput manufacturing process can make it possible to achieve the desired performance of the PCM composites.
