Articles tagged with Heat
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 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.
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.
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.
A study found that both temperate and tropical birds can tolerate high temperatures, with some species, such as doves and pigeons, exceeding heat limits, providing a buffer against climate warming. However, caution is needed as indirect effects on resources and forest structure may impact bird populations.
Research suggests that cascaded organic Rankine cycle systems can outperform single-stage systems in certain applications, but the trade-off between performance and cost is significant. The study's findings provide valuable insights into delivering environmentally-friendly power from waste heat.
Researchers are exploring the potential to capture, store and release waste heat from Port Talbot steelworks using a thermochemical heat storage material. The project aims to reduce carbon dioxide emissions by offsetting the heat generated by the giant steelworks.
The NTU researchers developed a 'smart window' by placing hydrogel-based liquid within glass panels, reducing up to 45% of heating, ventilation, and air-conditioning energy consumption. The 'liquid window' is also around 30% more energy efficient than commercially available low-emissivity glass.
Scientists have developed a white paint that cools below ambient temperatures, reflecting 95.5% of sunlight and maintaining lower temperatures under direct sun. This technology could reduce energy consumption and greenhouse gas emissions in various industries, including buildings, data centers, and outdoor equipment.
The researchers found that even in ideal conditions, quantum superposition leads to rare events with higher heat dissipation than the Landauer limit, which challenges traditional understanding of information erasure. This finding has significant implications for future quantum chips and thermodynamics.
Researchers at Politecnico di Torino have developed a new composite material that can store heat during the summer and release it during the winter using a low-cost technology. The innovative material combines cement, salt, and water to produce heat through hydration, offering an affordable solution to balance energy supply and demand.
A new passive radiative device, Janus emitter, absorbs heat from the inside of an enclosure and emits it on the outside, creating a sustainable way to keep temperatures low. The technology has potential applications in stationary vehicles, building interiors, and solar cells.
A KAUST team engineered self-powered devices using a conducting polymer containing PEDOT:PSS chains, which exhibited improved thermoelectric behavior. The researchers discovered that polyethylenimine coating enhanced the device's lifetime and energy harvesting capabilities.
Researchers at Oak Ridge National Laboratory and the University of Tennessee discovered a way to slow phonons, waves that transport heat, in photovoltaic materials. This discovery holds promise for improving novel hot-carrier solar cells, which convert sunlight to electricity more efficiently than conventional solar cells by harnessing...
A Texas A&M University study reveals that marine heatwaves can strengthen hurricanes by combining with extreme weather events. The research found that Hurricane Michael became a Category 5 storm due to the compounding effects of Tropical Storm Gordon and an atmospheric heatwave in the Gulf of Mexico.
Researchers have developed a new type of solar cell that can reflect 99% of the energy it can't convert into electricity, allowing for more efficient use of waste heat from exhaust pipes and chimneys. This technology has the potential to make renewable energy storage cheaper by ten-fold compared to traditional battery-based systems.
A new study suggests that pulses of cooler deep water can reduce heat stress responses in corals, potentially halting coral bleaching. The research found that even short intrusions of cooler deep water can mitigate thermal stress in corals, with the effect being stronger in simulations with water from deeper depths.
Researchers at EPFL developed a novel microfluidic cooling technology that integrates electronics and cooling systems, enabling compact devices with improved heat management. This innovation aims to reduce energy consumption and minimize environmental impact by eliminating large external heat sinks.
Researchers found that current energy consumption is tied to unchangeable past economic production, which led to an increase in carbon emissions. The study suggests that improving efficiency may actually accelerate civilization growth and consumption, making it harder to reduce CO2 emissions.
Researchers from Arizona State University have made significant progress in understanding TRPV1's thermosensing mechanism. The study provides a framework for distinguishing specific activation mechanisms that can be targeted to develop new non-addictive pain therapies.
Researchers found that those with existing fossil fuel interests oversold the idea of converting gas infrastructure to run on low-carbon hydrogen. To meet net-zero emissions goals for heating, known low-carbon heating options like heat pumps and networks must be prioritized.
Researchers have developed a novel approach to thermal management using bridging-droplet diodes, which can efficiently conduct heat in one direction. The device uses a wick structure to absorb heat and produces steam that condenses on the opposite side, allowing for improved heat conduction and reduced thermal resistance.
Researchers developed the Cold Tube, a system of rectangular panels that absorb heat radiation from a person's body, creating a cooling sensation. This technology can be used in outdoor spaces like summer fairs and public markets, reducing energy consumption by up to 50%.
Scientists at Princeton Plasma Physics Laboratory discover a network of interacting waves that plays a key role in triggering edge localized modes (ELMs) in fusion facilities. The findings provide new insights into the ELMs process and may help tame potentially damaging processes.
Researchers have designed an off-grid, low-cost modular energy source that can efficiently produce power at night. The rooftop radiative cooling system uses commercially available technology and can generate up to 2.2 Watts per square meter, enough to power sensors in security or environmental applications.
Researchers at the University of Illinois compared two composite manufacturing methods, frontal polymerization and bulk polymerization. Frontal polymerization, a new out-of-autoclave method, offers several advantages, including reduced capital investment, faster curing times, and lower environmental impact.
Researchers at Martin-Luther-University Halle-Wittenberg developed a method to incorporate paraffin wax into the shell of thermal storage tanks, reducing heat loss and promoting self-healing. The study's findings suggest a potential solution for storing renewable energy in the medium term.
A new theory proposes that early Earth's lithosphere heated up and expanded, causing cracks that eventually divided the planet into plates. The model, developed by Dr. Alexander Webb and his team, suggests that volcanic heat loss led to thermal contraction, which in turn caused the outer shell to warm up and expand.
Researchers developed a hybrid solar energy converter that generates both electricity and thermal energy with high efficiency and low cost, enabling zero-net-energy development and greenhouse-gas-free operations. The system demonstrated 85.1% efficiency and is projected to have a system levelized cost of 3 cents per kilowatt hour.
Researchers at Peter the Great Saint-Petersburg Polytechnic University discovered a new physical effect where mechanical oscillations can be excited only due to internal thermal resources. This phenomenon, called ballistic resonance, grows in amplitude over time and can resolve the Fermi-Pasta-Ulam-Tsingou paradox.
The geodynamo generates Earth's magnetic field through the motion of liquid iron in the outer core. New research examines how lighter elements like silicon could drive this process, suggesting a concentration of 8 weight percent silicon is sufficient to sustain the geodynamo on heat transmission alone for the planet's entire history.
A new study by North Carolina State University researchers found a flexible material made of tiny carbon nanotubes that can heat or cool the wearer on demand. The material has a combination of thermal, electrical, and physical properties that make it an appealing candidate for next-generation smart fabrics.
Thermophones enable creation of fully controlled arrays from thin metal films attached to wires, paving the way for new sound technologies including home cinema systems. Researchers demonstrate improved sound control and richer sound fields compared to traditional arrays.
Researchers have developed a novel portable pyroelectric technology that converts waste heat into usable power, offering a clean alternative to fossil fuels and nuclear energy. The technology has an extended lifetime and uses on-chip combustion of methanol to harness energy.
A recent study found that an anomalous anticyclone over Northeast Asia contributed nearly half to the magnitude of extreme heat events in 2018. The researchers also discovered that such anomalies have become more common and severe in recent decades.
A team of scientists at Tata Institute of Fundamental Research has detected tiny flashes of radio light from all over the Sun, identified as evidence for small magnetic explosions. These discoveries could explain the long-standing coronal heating problem, with preliminary estimates suggesting that these tiny explosions collectively hav...
A team from the University of Córdoba validates a solar-powered air heating system, which can cover 75% of heating demands on 75% of days. The system uses Unglazed Transpired Collectors to absorb heat generated by sunlight and preheat ventilation air.
Clemson scientist Matthew Koski will advance his research on floral thermoregulatory mechanisms with a 3-year, $455,000 grant. He aims to understand how flowers adapt to climate change by studying their thermal environments in Colorado.
Scientists have discovered that more energy can be stored by charging less frequently, but right up to 100%. The study found that dividing the storage system into compartments increases energy storage. This discovery may revolutionize electric car battery technology and lead to significant increases in capacity.
Researchers develop strong, comfortable fabric that adapts to changing weather conditions by absorbing and releasing thermal energy. The fabric, made from silk and chitosan with phase-changing polymer PEG, can be worn indoors or outdoors, reducing the need for air conditioning or heat.
A recent study from the University of Nebraska-Lincoln suggests that ancient aquatic crocodiles evolved to enormous sizes due to water pressure. The minimum survivable size threshold for these aquatic species was found to be around 10 kilograms, and they surpassed their semi-aquatic and landlocked counterparts in average weight by a fa...
Researchers developed a wearable technology that can hide its wearer from heat-detecting sensors, adapting to temperature changes in just a few minutes. The device uses phase-changing materials and thermoelectric alloys to insulate the wearer's body heat, keeping them comfortable.
Purdue University researchers developed a novel turbomachine expander to harvest wasted energy in vapor-compression heat pump cycles. The device offers more efficient and safer cooling options for companies and vehicles.
High-performance electric propellants have a higher enthalpy due to internal energy storage, which affects efficiency. The study predicts the material's conductivity and ionization at extreme temperatures.
A University of Tsukuba-led research team created a thermocell with a material exhibiting temperature-induced phase transition, boosting output voltage from tens of millivolts to around 120 mV. This design enables efficient energy harvesting from waste heat to power small electronics sustainably.
Researchers at University of Michigan developed nanoscale thermal switches that can control the flow of heat at the nanoscale. This discovery has the potential to revolutionize thermal management in devices such as transistors and diodes.
Researchers at EPFL have developed a novel formulation that describes how heat spreads within crystalline materials. This breakthrough will help engineers design next-generation electronic devices by explaining hydrodynamic phenomena, which are prevalent in materials like graphite and graphene.