Search or ask a question

Which material has a lower thermal conductivity than rockwool?

Amorphous solid

Thermal conductivity

Thermal conduction

Answers from top 7 papers

PDF

Open Access

More filters

Papers (7)	Insight
Journal Article•DOI Theoretical prediction and experimental determination of the low lattice thermal conductivity of Lu2SiO5 Zhilin Tian, Luchao Sun, Jiemin Wang, Jingyang Wang - Show less +3 more 01 Jun 2015-Journal of The European Ceramic Society 27 Citations	The present method can illustrate how specific material parameters govern lattice thermal conductivity and provide quantitative guideline in searching novel candidates with low thermal conductivity.
Journal Article•DOI Effective Thermal Conductivity of Functionally Graded Particulate Nanocomposites With Interfacial Thermal Resistance Huiming Yin, Glaucio H. Paulino, William G. Buttlar, Lizhi Sun - Show less +3 more 01 Sep 2008-Journal of Applied Mechanics 30 Citations	The results indicate that the effective thermal conductivity distribution greatly depends on Kapitza thermal resistance, particle size, and degree of material gradient.
Journal Article•DOI Estimation of thermal conductivity and its spatial variability in igneous rocks from in situ density logging Jan Sundberg, Pär-Erik Back, Lars O. Ericsson, John Wrafter - Show less +3 more 01 Sep 2009-International Journal of Rock Mechanics and Mining Sciences 56 Citations	Experience has shown that this indirect method of determining the thermal conductivity can be used to characterise the spatial variability of thermal conductivity for certain rock types.
Journal Article•DOI Measurement of the thermal conductivity of copper samples between 30 and 150 mK Lara Risegari, Marco Barucci, E. Olivieri, Edoardo Pasca, G. Ventura - Show less +4 more 01 Dec 2004-Cryogenics 12 Citations	The measurements show that both purity and thermal treatment strongly influence the value of thermal conductivity.
Journal Article•DOI Minimum thermal conductivity in the context of diffuson-mediated thermal transport Matthias T. Agne, Riley Hanus, Jeff Snyder - Show less +2 more 14 Mar 2018-Energy and Environmental Science 196 Citations	This model of diffuson-mediated thermal conductivity may thus help explain experimental results of ultralow thermal conductivity.
Journal Article•DOI How much improvement in thermoelectric performance can come from reducing thermal conductivity Michael W. Gaultois, Taylor D. Sparks - Show less +1 more 20 Mar 2014-Applied Physics Letters 21 Citations	This plot allows researchers to quickly distinguish materials where the thermal conductivity has been optimized from those where improvement can be made.
Open access•Proceedings Article•DOI Material discrimination and thermal perception Lynette A. Jones, M. Berris - Show less +1 more 22 Mar 2003 66 Citations	It appears that subjects respond more to variations in heat capacity than thermal conductivity when discriminating between materials.

My columns

Related Questions

What factors affect the thermal conductivity of different materials?4 answersFactors that affect the thermal conductivity of different materials include moisture content, temperature difference, bulk density, airflow velocity, thickness, pressure, and material aging. The length of the crystal lattice is a primary factor that influences the thermal conductivity of graphene, while the edge termination state has little effect. Temperature and moisture content are relevant factors that can cause variability in thermal conductivity, with inorganic fibers showing a linear temperature dependence and foamed insulation materials exhibiting nonlinear behavior. The presence of a graphite coating on a sample and the thickness of the sample can also affect the measurements of thermal conductivity, with deviations ranging from 5.5% to 60% depending on the material's thermal conductivity coefficient and the thickness of the coating.

What are the factors that affect the thermal conductivity of a material?5 answersFactors that affect the thermal conductivity of a material include moisture content, temperature difference, bulk density, airflow velocity, thickness, pressure, and material aging. The thermal conductivity of materials can also vary depending on their composition, such as inorganic fibers like rockwool or fiberglass showing lower thermal conductivities at lower temperatures, and foamed insulation materials like polyisocyanurate exhibiting nonlinear temperature dependence. Additionally, the thermal conductivity of a material can be influenced by factors such as the specific gravity, viscosity of fluid, porosity, and particle size. Understanding these factors is crucial for selecting and designing thermal insulation materials for building envelopes and achieving energy-efficient designs.

What are the trees that have low thermal conductivity?5 answersMaple and oak are trees that have low thermal conductivity.

Does rubber have a low thermal conductivity?7 answers

How thermally conductive is wood?7 answers

What is the least thermally conductive material?7 answers

See what other people are reading

Amorphous sillicon photodiode'

An amorphous silicon photodiode is a key component in various optoelectronic devices. It typically consists of a photodiode structure with an amorphous silicon layer, electrodes, and sometimes additional layers for improved performance. The use of amorphous silicon in photodiodes offers advantages such as ease of fabrication and compatibility with large-scale production processes. To enhance the efficiency and reduce dark current in amorphous silicon devices, techniques like incorporating nitrogen-doped indium tin oxide films or barrier metal films made of high-melting point metals have been proposed. These innovations aim to improve the overall performance and reliability of amorphous silicon photodiodes for various applications in light detection and energy conversion technologies.What is the thermal conductivity for Al2O3 nanoparicle in solid and liquid phase?

The thermal conductivity of Al2O3 nanoparticles in solid and liquid phases varies based on different experimental conditions. Research indicates that the thermal conductivity of Al2O3 nanofluids dispersed in water can range from 0.531 W mK−1 to 0.736 W mK−1. Additionally, the thermal conductivity of Al2O3 nanoparticles blended with paraffin can be enhanced significantly by adding different volume concentrations of nanoparticles, with improvements observed in both solid and liquid states. Furthermore, the thermal conductivity of Al2O3 nanofluids, along with ceria and their hybrid, was experimentally measured, showing enhancements of 5.3%, 3.3%, and 8.8% at specific volume concentrations and temperatures. These findings highlight the potential for utilizing Al2O3 nanoparticles to improve thermal conductivity in both solid and liquid phases for various applications.What is the geological history of the Bassin d'Ouarzazate region in Morocco?

The geological history of the Bassin d'Ouarzazate region in Morocco is characterized by a complex evolution involving various geological processes. The region experienced uplift and incision events, with evidence suggesting a combination of capture-induced base-level fall and mantle-related continental-scale uplift. Igneous rocks in the area, dated to around 595-560 Ma, indicate magmatic activity and potential asthenospheric upwelling, possibly linked to subducted oceanic lithosphere. Seismic reflection data reveals a structurally diverse basin with contrasting deformation patterns, aiding in understanding the Eocene aquifer system and guiding future water exploration efforts. Additionally, the formation of alluvial fans and terraces in the basin was influenced by base level changes and climatic variations over the Quaternary period, highlighting the impact of climate on landscape evolution. The aquifer system in the region, particularly in the Kourimat synclinal basin, plays a crucial role in providing drinking water and irrigation resources, with hydrogeological and hydrogeochemical studies shedding light on water flow patterns and quality.What are the different methods of heat transfer in a vacuum?

In a vacuum, heat transfer primarily occurs through thermal radiation. However, recent research has introduced a novel method where heat can be transferred through quantum fluctuations inducing phonon coupling across a vacuum gap. Vacuum insulation panels (VIPs) utilize reduced pressure and a powder of precipitated silicic acid to hinder convection, enhancing thermal insulation performance. Additionally, a rotation type vacuum heat conduction heat transfer device employs heat conduction working medium for heat transfer through phase transition gasification and radiation. The complex heat transfer process in vacuum glass involves the coupling of heat conduction, convection, and radiation, with the heat transfer coefficient being a crucial parameter. These methods showcase the diverse ways heat can be transferred in a vacuum environment.What is the quantum confinement effect?

The quantum confinement effect is a phenomenon observed in semiconductor materials, where the electronic and optical properties of the material are significantly altered due to the spatial confinement of charge carriers (electrons and holes) within dimensions that are comparable to the de Broglie wavelength of the carriers. This confinement leads to the discretization of energy levels, a departure from the continuous energy bands found in bulk materials. In practical terms, quantum confinement can manifest in various forms depending on the dimensionality of the confinement: in one dimension as quantum wells, in two dimensions as quantum wires, and in three dimensions as quantum dots (QDs). Each form of confinement restricts the motion of charge carriers in one or more dimensions, leading to distinct changes in the material's physical properties. For instance, quantum dots, which exhibit three-dimensional confinement, show size-dependent optical and electronic properties because the energy levels of the dots can be tuned by changing their size. This tunability is crucial for applications in near-field thermal radiation, light-emitting diodes (LEDs), and thin-film transistors. Quantum confinement effects are not only limited to altering electronic and optical properties but also influence the thermodynamic behavior of materials. For example, specific heat can exhibit unique features under spatial confinement, indicating phase transitions at certain temperatures. Moreover, the effect plays a significant role in enhancing the performance of semiconductors by tuning defect levels through strategies like hydrogen doping in nanostructures, thereby optimizing their electronic applications. Furthermore, quantum confinement can lead to the observation of quantum confinement effects in disordered materials, such as amorphous thin-film transistors, where it affects the field-effect mobility and device characteristics. It also impacts the linewidth broadening in metal halide perovskites, suggesting that quantum confinement is not a limiting factor in achieving ultrahigh color purity in next-generation LEDs. Additionally, the effect is evident in the blue shift of energy gaps in thin films, confirming its presence through spectroscopy experiments. In summary, the quantum confinement effect is a fundamental phenomenon that significantly influences the physical properties of nanostructured materials, with wide-ranging implications for electronic, optical, and thermodynamic applications.Why C15 is the low temperature stable Cr2Ti, while C36 is the medium temperature stable Cr2Ti?

At low temperatures, C15 is the stable phase for Cr2Ti due to its mechanical stability and specific structural characteristics, as supported by Li-Zhi He et al.. On the other hand, C36 becomes the stable phase at medium temperatures for Cr2Ti, with a transition pressure to C14 at a higher value, indicating a shift in stability with increasing temperature. The thermodynamic reassessment of the CCrTi system, incorporating DFT calculations and experimental data, provides a comprehensive understanding of the solidification sequence and solubility limits of Cr and Ti in various phases, enhancing predictions at low temperatures. This detailed analysis considers the interactions between Cr, Ti, and carbides, shedding light on the stability variations observed in different phases of Cr2Ti at varying temperature ranges.Why are cement blocks the most utilized construction material in Nigeria?

Cement blocks are extensively used in Nigeria due to various factors. Firstly, the cement industry in Nigeria is significant, with a large capacity for production. Additionally, research has shown that incorporating laterite in sandcrete blocks production, a common practice in Nigeria, can enhance the blocks' properties, making them meet minimum requirements and reducing energy requirements in buildings. However, challenges exist in ensuring the quality of sandcrete blocks, with issues related to poor quality control and curing practices affecting block strength and compliance with standards. Moreover, studies have explored alternative materials like PET waste to partially substitute sand in sandcrete blocks, aiming to mitigate plastic pollution while maintaining block strength and density. These factors collectively contribute to the widespread use of cement blocks in Nigeria's construction industry.What is the 2theta angle of xrd crystalline structure of metallic Fe ?

The X-ray diffraction (XRD) analysis of metallic Fe typically shows diffraction peaks at specific 2θ angles, providing information about its crystalline structure. While the specific 2θ angle for metallic Fe is not explicitly mentioned in the provided contexts, it is crucial to note that XRD is a powerful tool for characterizing crystalline materials like Fe, providing insights into crystal orientation, lattice parameters, and phases present in the sample. XRD patterns of metallic Fe can reveal details about its atomic structure, grain size, and crystal defects, aiding in material characterization and analysis. Therefore, conducting XRD analysis on metallic Fe can offer valuable information about its crystalline properties, aiding in various industrial applications and material science research.What are the main challenges of heating metals with microweaves?

Heating metals with microwaves presents several challenges. One key challenge is the need to consider nonequilibrium heat transfer phenomena at micro- and nanoscales, where traditional heat conduction laws may not apply, requiring the use of models like the hyperbolic or dual phase lag model. Additionally, in micro-heaters, minimizing tensile stress on metal lines during expansion or compression due to heating or cooling is crucial to prevent breakage, which can be addressed by incorporating deforming portions in the metal lines. Detecting tiny metal contamination in manufacturing processes, which can lead to overheating issues in various applications, is another significant challenge that researchers are addressing through high-frequency induction heating methods. Furthermore, in microfluidics and drug delivery, utilizing optically actuated microtools with embedded metal layers as heating elements introduces challenges related to achieving controlled loading and release of cargo using photothermal-induced convection currents.What factors influence the choice of research topic for a mentee in the field of [specific field]?

The choice of research topic for a mentee in the field of [specific field] is influenced by various factors. These factors include the mentee's own preference, the adviser's recommendation, trends in the field, the potential for publication, and the perceived impact on future job prospects. Additionally, the responsiveness of the adviser and dissertation committees to the mentee's topic selection can vary by field. Understanding these influences is crucial for mentees when selecting a research topic, as it can shape the direction of their doctoral dissertation and early research career. Moreover, considering the importance of factors like publication potential and job prospects can help mentees make informed decisions about their research focus.Which damaging effect can cause blue laser radiation in optics?

Blue laser radiation in optics can induce damaging effects such as thermal shock-waves leading to catastrophic breakdown. Additionally, contaminants like metal particles, such as stainless steel 304, on optics surfaces can absorb laser energy, generate plasma, and cause damage by ablating the surface. Furthermore, high pulse-energy densities of ArF laser light can alter calcium fluoride (CaF(2)) substrates to calcite, resulting in damage to outcoupling mirrors. These damaging effects highlight the importance of understanding and mitigating the impact of blue laser radiation on optical components to ensure their longevity and performance in high-power laser applications.