Articles tagged with Heat
Researchers develop conductive, wash-durable yarn for wearable heaters using poly(3,4-ethylenedioxythiophene) and poly(4-styrenesulfonate). The treated yarn can distribute heat at a safe operating voltage when sewn into fabric, providing steady warmth even in cold conditions.
Researchers found that young male winter swimmers had better thermoregulation and higher heat loss due to frequent sauna exposure. They also showed increased brown fat tissue activity, particularly in response to cold exposure.
A study by Brazilian researchers warns of extreme heat risks in northern Brazil due to savannization and climate change, posing a threat to human health and productivity. Approximately 12 million people may be exposed to extreme risk of heat stress by 2100, with severe economic implications.
Scientists at UChicago have invented a new thermal insulator with unusual properties. The material, made using an innovative technique, is extremely good at containing heat while also allowing it to be moved in different directions.
Clean geothermal power could become as important as fossil fuels, with new technologies and repurposed oil and gas expertise crucial to its development. Industry leaders emphasize the need for collaboration between geothermal and oil and gas professionals.
A WVU-led research team will test the potential of geothermal energy by drilling three miles into the ground. The project aims to reduce carbon footprint and decrease energy costs for the university, with potential implications for industries across West Virginia.
Berkeley Lab researchers developed a method to increase the efficiency of LED devices by applying mechanical strain to thin semiconductor films. This approach reduces exciton annihilation, allowing for high-performance LEDs even at high brightness levels.
Researchers at UNIST have developed a thermoelectric tube using 3D printing that can effectively convert waste heat into electricity. The new technology has a high thermoelectric performance and is more effective than conventional cuboid-shaped devices.
The Lancet reports that extreme heat is becoming a major health issue, with over 356,000 deaths in 2019 related to heat. Effective cooling strategies are needed to protect vulnerable populations and mitigate climate change.
Scientists at São Paulo State University discovered that compressing paramagnetic salts adiabatically can produce magnetization. The process aligns the particles' spins, resulting in a constant total entropy and magnetized system. This method has potential applications in investigating other interacting systems.
Researchers at TU Wien have invented a new cooling concept that combines thermodynamics and quantum physics to break low-temperature records. By using quantum effects to cool a cloud of ultracold atoms, they achieved temperatures closer to absolute zero than ever before.
A research team developed a novel sensor that can detect and convert infrared light into electrical signals at temperatures up to 100°C. The device eliminates the need for cooling devices, reducing production costs and operating speeds, making it suitable for smartphone and autonomous vehicle applications.
Researchers at Tata Institute of Fundamental Research developed a novel method to capture ultrafast motion of plasma at different transverse locations. The team's experiment shows that different portions of the plasma move in and out at different times, contrary to previous expectations.
Researchers have discovered a new inorganic material with the lowest thermal conductivity ever reported, offering fundamental insights into heat management and waste heat conversion. The material combines two arrangements of atoms that slow down heat transport, resulting in a significant reduction in thermal conductivity.
Texas A&M researchers found that sea otters' muscles use thermogenic leak to generate heat, allowing them to thrive in cold water. This finding explains how otters maintain their high metabolic rate and survive in marine environments.
A study published in Journal of Experimental Biology found that Arctic seabirds are poorly adapted to cope with rising temperatures, leading to increased mortality rates. The researchers discovered that murres have an extremely poor ability to dissipate heat, making them more vulnerable to heat stress.
Thermal waves have been observed in germanium at room temperature, a significant improvement in electronic devices performance. The discovery opens new possibilities for controlling heat through wave-like thermal transport.
Researchers successfully integrate a new ultrahigh thermal-management material into computer chips, reducing heat and increasing energy efficiency. The development outperforms existing materials like diamond and silicon carbide, with temperatures rising to nearly 188 degrees Fahrenheit.
Researchers at Osaka University found that silver nanoparticles induce crystallization in clathrate hydrates, a potential application for latent heat storage materials. The study may lead to improved efficiency in solar energy and heat recovery technologies.
Researchers at ETH Zurich developed a technology to harvest water 24/7 with no energy input, using specially coated glass and a radiation shield. The device can produce up to twice as much water as current passive technologies, with potential for large-scale integration.
Researchers designed a new type of molecular motor that can rotate in picoseconds using the power of a single photon. The motor's speed is significantly faster than existing designs, with potential applications in drug delivery, nanotechnology, and controlling biological processes.
A new study from Aalto University recommends that government subsidies for clean-energy heating be allocated to areas where homeowners can least afford the upfront cost, namely those with lower housing prices. This approach aims to promote energy-efficient heat pumps and reduce carbon emissions in Finland's residential buildings.
Researchers at Tokyo Tech developed a flexible device capable of rapidly increasing temperature of target tissues without tissue burning. The device overcomes limitations of existing heat-generating devices and opens up possibilities for wide clinical scenarios including minimally invasive endoscopic surgery.
Researchers at National Institutes of Natural Sciences have developed an Advanced Multi-Step Brazing (AMSB) technique to jointly fabricate components made of oxide dispersion strengthened copper alloy. The new technique enables the creation of a heat removal component with excellent heat removal performance, surpassing existing records.
Researchers discovered a new electronic property in a specially engineered metal alloy, enabling the manipulation of heat with a magnetic 'switch'. The material, called Weyl semimetal, exhibits unusual electron behavior, generating and absorbing heat to create an energy pump.
Research suggests that heat generated by asteroid impacts could enable aqueous alteration and organic solid formation, increasing the number of potential sources of water and life's origins. The study found that craters over 1km in radius can support organic substance formation within a 2 AU distance from the impact point.
Researchers successfully created amorphous ice similar to interstellar space and on Jupiter's moon Europa, which could help interpret data from future NASA missions. They also developed an envelope system that diverts heat away from buildings and stores it for future use, reducing energy consumption by over 50%. Additionally, scientist...
Researchers at Ohio State University have discovered a single compound that functions as an efficient thermoelectric generator, producing power from waste heat. The compound's unique property allows it to carry both positive and negative charges independently, generating electricity without moving parts.
Dr Martin White's research proposes a two-phase expansion system that can generate up to 28% more power than conventional single-phase systems. The study aims to enhance the performance of Organic Rankine Cycle (ORC) systems for waste heat recovery, reducing environmental footprint in industries such as iron and steel, food, and drink.
Researchers achieved stable partial energy detachment and suppressed material sputtering using Ar and Ne seeding. The study provides a feasible experiment program for maintaining steady-state plasma under high-power long-pulse conditions.
The global temperature rise will increase cooling degree days, leading to a higher energy demand for cooling buildings. In Switzerland, the energy demand for cooling is expected to increase significantly, with potential peaks on hot days.
Researchers found blocking a receptor of neuropeptide Y increases fat metabolism and prevents weight gain in obese individuals. The treatment, BIBO3304, targets peripheral tissues without affecting the brain, offering a potentially safer alternative to current medications.
Researchers at the University of Utah have developed a theoretical method to thermally cloak objects, making them invisible to thermal cameras. Using heat pumps, they can fine-tune heat transfer and mimic heat signatures of different objects.
A new experiment has found that the accuracy of a clock is directly proportional to the amount of heat supplied, with more energy consumed resulting in more accurate timekeeping. This discovery has implications for future technologies and suggests that clocks are constrained by thermodynamics.
Researchers have developed a class of materials that manipulates thermal radiation, allowing for efficient energy conversion systems and improved sensing technologies. By directing heat in specific directions over broad spectra, the new material offers capabilities for imaging, sensing applications, solar heating, waste heat recovery, ...
Researchers from Sandia National Laboratories used 22-foot-wide tethered balloons to collect dust samples, confirming the new solar-power technology's safety. The technology stores heat in heated particles, which can store energy for days or weeks, stabilizing power output.
Researchers discovered that bird blood functions as a central heating system when it is cold, thanks to the presence of mitochondria. The study found that birds produce more heat through their blood cells during winter, challenging the common assumption that shivering and fluffing feathers are the primary methods for thermoregulation.
A South Korean research team has developed a high-efficiency flexible thermoelectric device capable of autonomously generating electricity from body heat. The device features a sponge-like configuration that enhances thermal insulation, allowing it to perform better than existing flexible thermoelectric devices.
A research team from TU Wien has discovered a new form of tantalum nitride with exceptional thermal conductivity, surpassing that of diamond. The material's unique atomic structure suppresses interactions that inhibit heat conduction, making it highly promising for the chip industry.
A new research study has demonstrated that a magnetic uranium compound can have strong thermoelectric properties, generating up to four times the transverse voltage from heat as previous records. This discovery unlocks a new potential for the actinide elements and points to a fresh direction in research on topological quantum materials.
Researchers at North Carolina State University have developed a flexible thermoelectric generator that converts body heat into electrical energy with improved efficiency. The device achieves significant reductions in heat leakage, resulting in higher output power density figures compared to previous versions.
Lowering solar panel operating temperature by a few degrees can significantly increase electricity generation over lifetime, KAUST researchers show. They developed a metric to compare LCOE gains from reducing module temperature vs. improving efficiency, finding that cooling can achieve similar gains as PCE improvements.
The Brenner base tunnel is being investigated for its geothermal potential, with researchers aiming to use drainage water for climate-friendly heating and cooling of houses. The project aims to develop a sustainable system that can be implemented in other existing tunnel structures.
A study found that people with a loss-of-function variant of the ACTN3 gene, which lacks skeletal muscle protein α-actinin-3, have improved cold tolerance. This is due to increased muscle tone and a shift towards slow-twitch muscle fibers.
ORNL's Amanzi-ATS model simulates groundwater flow in Arctic ecosystems, revealing the impact of thawing permafrost on stream temperatures. New cobalt and nickel superalloys remain crack-free and defect-resistant in extreme heat, enabling metal-based 3D printing applications.
A study by the University of Kansas found that marching band members are at high risk of heat illness due to their heavy uniforms and performance in hot temperatures. The researchers recommend providing access to athletic trainers to prevent heat-related illnesses.
Researchers at the University of Colorado Boulder developed a low-cost wearable device that turns the human body into a biological battery. The device generates electricity by converting body heat into thermoelectric energy, making it a potential power source for wearable electronics.
Researchers have developed a framework to predict the performance of next-generation hybrid photovoltaic-thermal (PVT) solar collectors. The study reveals that the relative value of thermal energy to electricity significantly influences efficiency limits, optimal PV cell material, and spectral-splitting filter design.
Researchers created a gel made of two solid ingredients - polymers and nanoparticles - that can defy thermodynamic laws to remain stable at body temperature. This breakthrough could lead to injectable gels that release medicines over time, replacing daily or weekly shots.
Scientists have developed a new generation of thermomagnetic generators that can convert waste heat into electrical power at small temperature differences. The devices, based on Heusler alloy films, increased electrical power per footprint by a factor of 3.4 and reached a maximum power of 50 microwatts per square centimeter.
Researchers developed flexible thermoelectric devices that can generate electricity from human skin temperature, overcoming limitations of existing rigid devices. The new technology allows for mass production of wearable devices with high power generation performance, solving the power-source issue for battery-based sensor systems.
Research reveals a strong relationship between anthropogenic heat flux and extreme temperature events, including both heat and cold extremes. The study, conducted in Beijing, China, uses advanced modeling techniques to analyze the impact of urbanization on temperature records.
Researchers found that cooling vests reduced heat stress in COVID-19 nurses by lowering heart rates and improving subjective perceptions. The study showed that while core temperature increased slightly, the cooling vest had a minimal effect on overall heat stress.
Researchers at Friedrich Schiller University Jena have developed a refined process for thermally tempering thin glass, removing limitations on strength. The new method uses a liquid coolant to create a thermal gradient, enabling the production of high-strength glasses without thickness restrictions.
Direct solar steam generation (DSSG) has promise as an alternative to traditional water treatment methods, but advancements are needed to overcome limitations. New technologies have improved evaporation rates and reduced heat loss, offering a potential solution to global drinking water scarcity.
Researchers have discovered a way to control the conduction type of tin monoselenide (SnSe) by doping with antimony, leading to improved thermoelectric performance. The findings offer a potential solution to harness waste heat and reduce global warming.
Researchers at Chalmers University of Technology have developed graphene-based heat pipes that can efficiently cool electronics and power systems. The new technology offers a significant energy efficiency contribution to data centres and other applications, reducing greenhouse gas emissions.
Scientists at the University of Illinois have developed a new way to model hypersonic flow, allowing for a better understanding of thermal protection systems and heat shields. The research uses quantum physics and machine learning to simulate the interactions between molecules and atoms in extreme environments.
Researchers at the University of Wollongong have developed a new thermoelectric material with record-high conversion efficiency, improving heat-to-electricity conversion by over 60%. The discovery could enable the creation of body-heat powered personal devices, revolutionizing low-maintenance electronics and zero-carbon power generation.
Scientists create technique to remotely manipulate heat sources and associated fluid flows using laser light. This enables new functionalities in optofluidics, such as selective delivery of nano-objects and analytes. The method also demonstrates programmable control over optical propulsion forces and fluid streams.