Articles tagged with Heat
The Sandia National Laboratories' solar tower facility is conducting a year-round test of the thermal response of various materials to intense heat and cooling. Researchers are using this setup to evaluate material durability for the Air Force, with the goal of establishing material response thresholds after exposure.
A new study published in Nature Communications has more than doubled the ability of a material to convert heat into electricity, a significant step towards reducing wasted fossil fuel. By significantly narrowing the space through which spread electrons move, researchers improved thermoelectric energy conversion rates.
Researchers found that golden snub-nosed monkeys increase their energy intake from fats and carbs in winter to counteract elevated thermoregulatory costs. This adjustment enables the monkeys to balance their macronutrient content and meet specific nutritional needs, suggesting a key adaptation for survival in cold environments.
Researchers used deuterium to estimate heat flow in Yellowstone hot springs, accounting for both visible and subsurface water flows. The new method provides an important step towards understanding the complex processes driving Yellowstone's volcano and geothermal features.
Atomically thin nanowires have been found to convert heat to electricity with unprecedented efficiency. This breakthrough could lead to the creation of new thermoelectric generators and exploration of alternative candidate materials for thermoelectrics.
Researchers at Sandia National Laboratories are working on a project to refine a specific type of utility-scale solar energy technology that can supply renewable energy without batteries for storage. The goal is to reach temperatures greater than 700 C, which would boost efficiency and lower electricity costs.
Scientists at Oak Ridge National Laboratory made the first observations of supersonically propagating phasons through a vibrating crystal lattice. This discovery may revolutionize heat management in future electronics devices by providing a shortcut to send energy through materials.
Researchers at Tokyo Institute of Technology have created a micrometer-wide thermometer that can measure small and rapid temperature changes in real time. The device is sensitive to heat generated by optical and electron beams, enabling its use in various fields such as photo-thermal cancer treatment and advanced research on crystals.
Researchers at Purdue University have demonstrated the theoretical existence of thermoacoustics in solids, which could lead to the development of solid-state engines and refrigerators. The technology harnesses temperature oscillations and sound waves to generate energy, making it suitable for harsh environments like outer space.
Researchers at the University of Illinois have developed a new polymer-curing process that uses minimal energy and cuts manufacturing time in half. The breakthrough could lead to cost-effective production of high-performance polymers for aerospace and automotive industries.
Scientists have discovered that sarcoptic mange causes significant loss of body heat and increased metabolic rate in Tasmanian wombats, leading to reduced foraging and increased mortality. The research suggests that dietary supplementation may help address these issues, offering new hope for the management of wombat mange.
Engineers at UC Berkeley developed a thin-film system that can convert low-quality waste heat into electricity, achieving unprecedented energy density and power density. The technology has potential applications in various industries, including electronics and manufacturing.
Researchers found that the efficiency of information processing cannot be increased indefinitely, with thermodynamic and information theory combining to identify key factors. Better understanding and tailored software can influence the limit.
A team of MIT engineers has developed a polymer thermal conductor that can dissipate heat more efficiently than traditional insulators. The new material is lightweight and flexible, conducting 10 times as much heat as most commercially used polymers.
Researchers have discovered a way to control the spin current in double-stranded DNA molecules using temperature gradients. They found that the inherent chirality feature in dsDNA enables spin selection and can act as a filter for spin transport.
Researchers at VIB & KU Leuven have identified a trio of complementary ion channels in sensory neurons that detect acute, harmful heat. The presence of three redundant molecular heat-sensing mechanisms provides a powerful fail-safe mechanism to protect against burn injuries.
Research suggests iQOS's 'heat not burn' technology may release toxic chemicals when used improperly. The study found that thorough cleaning and proper use can increase the risk of charring and chemical release. Independent research has been lacking, highlighting the need for further safety testing.
Mice lacking the cold-sensing ion channel TRPM8 consumed more food during the day when they should be asleep, leading to obesity and high blood sugar in adulthood. This study reveals a previously unrecognized link between thermal sensing systems, thermoregulation and food intake.
Urban heat islands are caused by cities trapping more heat than surrounding areas due to their structure, affecting energy consumption and air quality. Researchers studied 50 cities and found that well-organized cities with straight streets retain more heat at night, leading to increased energy bills in hot climates.
Researchers detect heat produced by Alfvén waves in a sunspot, shedding light on the Sun's extremely high temperatures. The discovery opens up new understanding of this phenomenon and its potential applications in energy reactors and medical devices.
The project aims to convert waste heat into cooled water, offering potential cost and energy savings to U.S. manufacturers. The innovative turbo-compression cooling system has numerous large-scale practical applications, including dairy producers transforming waste heat into chilled milk.
The Russian National Technological Initiative aims to intensify heat transfer using nanomodified composite materials and nanostructures, aiming to remove high-density heat fluxes at low temperature differences.
Scientists have developed CONTISOL, a solar reactor that can run day and night using concentrated solar power. The reactor uses air as the heat transfer medium and achieves stable temperatures round the clock.
A recent study by the Joint Research Centre reveals that changes in global vegetation cover from 2000 to 2015 have made the planet warmer. The research found that the removal of tropical evergreen forests for agricultural expansion is the most significant factor contributing to local increases in surface temperature.
Scientists have discovered a simple method to harness the thermoelectric effect by combining a graphite pencil with a conductive coating on paper. The resulting voltage is comparable to expensive nanocomposites, offering potential applications in flexible electronics and wearable devices.
A novel system, called a thermal resonator, converts daily temperature swings into electrical power. The device takes advantage of the ambient temperature fluctuations that occur during the day-night cycle, making it suitable for remote sensing systems without requiring batteries or other power sources.
A study by University of Cambridge biological anthropologists reveals that muscle mass is key to regulating heat loss from the hands in cold conditions. Volunteers with higher muscle mass experienced faster rewarming of their hands after exposure to ice-cold water.
Researchers at the University of Tsukuba have developed a new kind of thermoelectric system that can harness small energy differences at low temperatures, producing an electrical energy of 2.3 meV per cycle. The device has shown promising prospects for large-scale heat energy recovery and could help industries become more efficient.
Researchers propose a novel method to cool quantum devices by leveraging quantum interference, effectively cancelling heat flow and mitigating thermal noise. This innovative approach has the potential to significantly enhance the performance and stability of quantum computers.
Researchers discovered that heat flow behaves like a viscous fluid when transitioning from metal to substrate, causing temperature spikes in electronic devices. This finding paves the way for better thermal management, improving processor performance and preventing 'hot spots',
Researchers found that changes in humidity determine how much snowpack contributes to streams, lakes, and groundwater as the climate warms. Cloudy, humid winter days cause snowpack to warm faster, increasing melt during winter months. In contrast, clear skies and low humidity preserve the snowpack until spring. The study highlights the...
Researchers at Friedrich Schiller University Jena developed smart windows that can change light permeability with a button press, while also harnessing solar heat. These 'large-area fluidic windows' offer a cost-effective alternative to traditional air conditioning systems and daylight regulation.
Researchers from Ural Federal University and Karaganda State Technical University developed a mathematical model to optimize the operation of an autonomous heat supply unit. The study found that adjusting parameters such as blade size in the Cavitator increased cavitation intensity and temperature, improving efficiency.
The University of Illinois Chicago has received a $4.2 million grant from the U.S. Department of Energy to evaluate and install highly efficient combined heat and power technologies. This technology produces both thermal energy and electricity, achieving typical efficiencies of 65-75% compared to conventional systems.
Chinese physicists manipulate heat transfer to reduce waste and create invisible thermal cloaks. Their experimental results confirm equations predicting thermal conductivity of periodic materials.
Researchers used video cameras to capture footage of cars accelerating through a traffic light, finding that packing tightly doesn't increase passing chances. Drivers should maintain a safe distance from the car in front when stopped at a light to reduce rear-end collision risks.
Physicists at Bielefeld University discovered a new material that can generate magnetic signals, known as 'spin currents', from heat, increasing efficiency. The researchers tested various combinations of thin films and found that materials with special electronic structures produced stronger spin currents.
Researchers at MIT have developed a new chemical composite that can store thermal energy during the day and release it when needed. The hybrid material uses molecular switches to change shape in response to light, allowing for controlled thermal energy storage.
Scientists have identified a novel biological pathway in beige fat cells that burns excess blood glucose to produce heat, suggesting a new strategy for treating metabolic disorders. This discovery could lead to the development of anti-obesity drugs.
Researchers have developed a new material for clothing that can cool people down without external energy needed, using a nanocomposite thread made from boron nitride and polyvinyl alcohol. The fabric is more efficient at moving heat away from the body than pure polyvinyl alcohol or cotton fabrics.
A new technology developed by UTSA professor Samer Dessouky converts heat from paved surfaces into electricity, generating power for rural areas and potential back-up lighting in airports. This innovation uses drones to map concentrated heat sources, enabling efficient energy harvesting from hot pavements.
The devices can be cut to the size needed for specific applications due to their symmetrical fractal wiring patterns. The modular generators could be inkjet printed on flexible substrates like fabric and manufactured using inexpensive roll-to-roll techniques.
Researchers at Ames Laboratory have successfully decomposed lignin into stable components using a phosphate-modified ceria catalyst, producing useful industrial precursors for nylon production. The process eliminates the need for hydrogen from natural gas and uses an energy-conserving alcohol-based hydrogenation process.
New simulations led by PPPL provide positive news for ITER. Researchers estimate a heat flux width of up to 6 millimeters within the divertor plates' capacity to tolerate, far greater than previous projections. This finding indicates ITER can produce 10 times more power than it consumes without damaging the divertor plates prematurely.
The device uses a temperature difference between the hot and cold sides to generate electricity, with a high temperature difference of 20.9 °C, much higher than conventional wearable thermoelectric generators driven by body heat.
Drexel University researchers develop a method to create roads that can deice themselves during winter storms by adding phase change materials like paraffin wax to the concrete mix. The technology has shown promise in melting snow and ice, reducing the need for chemicals and salt.
Researchers at MIT have found a new way to control the adhesion of freezing droplets on surfaces by manipulating their thermal properties. This discovery could lead to improved coatings in industries such as 3-D printing and turbine blade manufacturing.
A recent study published in Nature investigated the Alpine Fault of New Zealand, revealing unusual heat generation and fluid movement. The research team drilled to a depth of 893m into the active fault, discovering a pressure gradient almost 10% greater than expected, and temperature gradients typical of active volcanic regions.
Researchers develop 'dip-and-dry' approach for selective solar absorbers, exhibiting high performance and durability. The new method yields highly efficient SSAs with contrasting optical properties for solar and thermal radiation.
A new technique can change plastic's molecular structure to help it dissipate heat more efficiently, making it suitable for applications like vehicles, LEDs, and computers. The process is inexpensive and scalable, and preliminary tests show a polymer with thermally conductive properties similar to glass.
A new study by Florida State University researchers found that temperature-related tweets increase on Twitter when temperatures rise. Government officials use the platform to disseminate information about cooling centers and energy assistance, with agencies in several states actively using Twitter for this purpose.
Researchers at Aalto University found that solar energy can produce over 80% of domestic heating requirements in Finnish households. The study used various storage methods and found that prices need to be competitive for it to become a viable alternative. This could significantly reduce carbon dioxide emissions in Europe.
Researchers at Oak Ridge National Laboratory have developed a new approach to locate oil and gas in shale, reducing production time and cost. Additionally, the team has discovered a link between electrochemistry and ferroelectricity, enabling new materials for electronics and energy applications.
Thermal comfort has increased in China over the past few decades due to rising temperatures and declining wind speed. The study found an average of 255 very cold and cold days per year, but a decline in cold days, with only 11 hot and very hot days per year.
The new cogen facility will save BMC about $1.5 million in heat and energy costs annually by operating at 70 percent efficiency compared to traditional power plants. The cogeneration plant, located on the Yawkey roof, can heat and power hospital's inpatient units for months if the electric grid goes down.
Nebraska engineers have created a nano-thermal-mechanical device that allows computing at temperatures up to 630 degrees Fahrenheit. This technology has the potential to revolutionize industries such as space exploration, oil drilling, and geology by harnessing heat instead of combating it.
An international team of scientists found that strongly nonlinear systems can reach equilibrium, provided certain conditions are met. The breakthrough was made by examining the collisions between solitary waves in a chain of solid spheres and comparing the results with dynamical computer simulations.
Researchers have developed a new reconfigurable device that can emit thermal infrared light in a fully controlled manner, enabling efficient energy harvesting from waste heat. The technology has potential applications in thermophotovoltaics and could be used to convert heat into energy for various purposes.
Researchers at Duke University have developed a new 'jumping droplet' technique that effectively cools mobile hotspots by harnessing the power of surface energy. This breakthrough method, reported in Applied Physics Letters, enables efficient heat dissipation in all directions, outperforming existing methods.
Joe Feser's $500,000 NSF grant will focus on manipulating heat transfer by phonons using embedded nanoparticles. The research aims to engineer materials with improved thermal properties for applications such as nanostructured electronic and optical materials.