Articles tagged with Heat
Researchers in Japan investigate three technologies for heat recovery: latent heat, reaction heat, and thermoelectric devices. They find that high-temperature waste heat with adequate exergy value exists in many industries, offering effective ways to recover waste heat.
Researchers developed a new method to measure heat transport in rocks, revealing that rock conductivity varies strongly with temperature. The technique, laser-flash analysis, provides more accurate data on heat transport than conventional methods.
Scientists at Queen's University have detected giant twisting waves in the lower atmosphere of the Sun, known as Alfvén waves. These waves transport energy into the Corona or outer layer, carrying heat and explaining why it reaches temperatures of over a million degrees.
Researchers at University at Buffalo found that single-walled carbon nanotubes do not experience electromigration and thermomigration like metals, producing significantly less heat. This property makes carbon nanotubes ideal for future electronic devices, including electric cars and sophisticated naval systems.
Scientists from GFZ German Research Centre for Geosciences developed a numerical model to calculate future continent positions. The continents function as a thermal blanket, causing heat accumulation and super-continent break-up., A self-regulating system develops, resulting in reorganization of mantle convection.
Yale researchers create systems that harness the power of osmosis to harvest freshwater from non-potable sources and generate electricity from low-temperature heat. This innovative approach requires significantly less energy than traditional desalination methods, offering a sustainable solution for increasing global water supply.
Researchers propose that Jupiter's gravitational pull creates powerful waves in Europa's ocean, generating significant heat energy. This could be a dominant heat source, potentially supporting life without sunlight.
The US Department of Energy has awarded Clemson University researchers $409,000 to develop a new fluoropolymer material for hydrogen production. The project aims to create a more efficient electrolyzer, enabling the use of hydrogen as a major source of energy in the future.
Researchers at Newcastle University create a super-efficient system that burns vegetable oil to produce electricity, heating, and cooling. The innovative design optimizes energy recovery, storage, and distribution for a carbon-neutral home power solution.
NASA scientists uncrated an Apollo-era heat shield to analyze its design and thermal response, providing valuable insights for the development of the Orion Crew Exploration Vehicle's Thermal Protection System. The study aims to improve the vehicle's heat protection capabilities, enabling it to safely carry crews to the moon and beyond.
Researchers at Worcester Polytechnic Institute have created a solar collector system that can harness heat from asphalt roads and parking lots to generate electricity and hot water. The technology has the potential to reduce urban 'heat island' effects and provide a cost-effective source of renewable energy.
Capsaicin from hot peppers directly induces thermogenesis by altering muscle protein SERCA, leading to increased heat production. This process could be used to design more potent compounds for treating hypothermia.
Researchers at Ohio State University have developed a new thermoelectric material that can convert waste heat from engine exhaust into electricity, with twice the efficiency of current market materials. The material is effective between 450-950 degrees Fahrenheit and has potential applications in power generators and heat pumps.
Researchers at Rensselaer Polytechnic Institute have discovered a method to induce, suppress 'branching' of nanorods using biomolecules. The new technique could lead to the development of smaller, more powerful heat pumps and devices that harness electricity from heat.
Researchers found that frequent temperature measurements can alter the behavior of quantum systems, allowing them to heat up when hotter than the bath and cool down when colder. This effect is due to decoupling from the heat bath during measurement, introducing energy into the system and altering its temperature.
A team led by Kevin Pipe will use ultrafast lasers and nanotechnology to regulate the flow of heat between materials, benefiting applications such as high-power electronics and thermoelectric energy conversion. The research aims to improve efficiency and reliability in devices.
Researchers at Boston College and MIT used nanotechnology to boost thermoelectric efficiency, a milestone that could lead to cleaner products and energy generation. By slowing down phonons, the team created a material with improved electrical conductivity while blocking heat flow.
Two groundbreaking technologies, a nano chemsensor unit (NCSU) and a variable emissivity film, have proven successful on NASA's MidSTAR-1 satellite. The NCSU can detect harmful chemicals and contaminants in space, while the film controls heat on spacecraft, reducing weight and power consumption.
A new hybrid vehicle, powered by the heat differences in the ocean, has successfully completed its first oceanic test drive. The 'thermal glider' harvests heat energy to propel itself across thousands of kilometers of water, offering a virtually unlimited energy source for propulsion.
Arizona State University professor C. Austen Angell discovered the 'glassy state' of water, a sub-state of matter that behaves oddly due to its unique hydrogen bond network. He found that supercooled water exhibits an unusual heat capacity, which is different from other glass-forming liquids.
Researchers developed a testing apparatus to track air flow distribution in finned-tube heat exchangers, comparing results with CFD simulations. This could lead to improved heat pump efficiency by 5% and reduced material cost.
Researchers at Berkeley Lab have developed a novel method to synthesize silicon nanowires with exceptionally rough surfaces, which exhibit high thermoelectric efficiency. This breakthrough technology could enable the widespread adoption of thermoelectric materials in various applications.
Researchers explore how genes, neurotransmitters, and brain function impact athletic performance and endurance. Studies reveal that certain genetic variations and mental state can significantly enhance physical abilities.
Researchers from UC Davis and international partners aim to unlock geothermal energy potential in Iceland and the US. By studying high-pressure conditions and heat transfer processes, they hope to develop more efficient methods for extracting heat from rocks.
Researchers developed a method to grow nanotube forests on silicon chips, outperforming conventional thermal interface materials. The technique uses dendrimers and metal catalyst particles to create a forest of carbon nanotubes that conform to the heat sink's surface, improving heat conduction and reducing the size of cooling systems.
Researchers found that heat stress, measured by temperature-humidity index (THI), was a significant factor in low conception rates of dairy herds. High THI values before insemination, particularly on Day 3, led to ovulation failure and reduced fertility. Conversely, cooling measures implemented when temperatures exceeded 20°C improved ...
A recent PNAS study found that the current Earth system has improved heat regulation compared to 60 million years ago when small tectonic plates existed. The research suggests that plate size and number significantly affect heat loss, with smaller plates leading to greater heat escape from the mantle.
A team of researchers from the University of Illinois has developed an ultrafast thermal measurement technique capable of exploring heat transport in extended molecules. The study found that heating a molecule can cause its atoms to shake and twist, and that heat moves ballistically through the molecule at a constant velocity.
Researchers have developed small acoustic heat-engine devices that convert waste heat into sound and then into electricity. The technology shows promise for harnessing solar energy and cooling electronics, with plans to test the devices within a year at military radar facilities and universities.
Researchers have developed a simple and scalable assembly to integrate carbon nanotube structures on silicon chips, improving thermal management without increasing device weight. The cooling performance is comparable to that of copper, a significant advantage in miniaturized electronics.
Denmark's researchers claim anesthetics are based on sound pulses rather than electrical impulses. The membrane of the nerve is similar to olive oil and can change state with temperature, allowing concentrated sound pulses to propagate without heat.
Researchers at UC Berkeley have successfully generated electricity from heat by trapping organic molecules between metal nanoparticles. The discovery could lead to more efficient ways to directly convert heat into electricity, potentially reducing waste and emissions.
Researchers discovered that bumblebee workers specialize in tasks such as incubating young and fanning wings to cool the nest. The study found strong evidence for job specialization, with larger bees taking on foraging tasks, and smaller bees performing temperature-regulation duties.
Scientists from Northwestern University find New Madrid rocks surprisingly similar to other areas of the eastern United States, contradicting the idea that hot rocks are weak. The study suggests the fault system may be shutting down, with no large earthquakes expected for thousands of years or longer.
Researchers at Purdue University have developed thermal interface materials with carbon nanotubes that conduct heat more efficiently than conventional materials. The nanotube-based interfaces can reduce the temperature rise of computer chips by up to 5 degrees Celsius, improving overall performance and reducing the risk of damage.
Researchers at University of California, Riverside, are developing a software-based thermal sensing system to monitor heat changes during run time. The system aims to address design shortcomings in traditional temperature sensors, which can lead to performance degradation.
The project seeks to develop nanostructured composite materials with controlled thermal conductivity, impacting technologies like thermoelectric coolers and power electronics. Huxtable plans to educate underprivileged students through a summer research program.
Researchers evaluated innovative approaches to mitigate the urban heat island effect, including light-colored surfaces and vegetation. Strategies such as planting urban forests and creating living roofs showed promise in reducing air temperatures.
Researchers have developed a new theory that reconciles heat dissipation and electronic transport in metallic carbon nanotubes. The findings explain why shorter nanotubes can carry more current before burning apart due to efficient heat removal.
The KamLAND experiment detects geoneutrinos produced in the Earth's interior through uranium and thorium decay. This discovery provides an assay of the planet's total radioactivity, shedding light on terrestrial heat sources.
Researchers at Rensselaer Polytechnic Institute developed a heat spreader that uses phase-change heat process to cool the brain during epileptic seizures. The device, implanted on the neocortex, cools the brain from 38°C to 20°C to render it seizure-free.
A recent study confirms that the Earth's energy is out of balance, with an imbalance of 0.85 watts per meter squared causing a significant impact on global temperatures. The study also reveals that warmer waters will lead to accelerated ice sheet disintegration and sea level rise.
Researchers develop nanostructured thermoelectric devices that can harness heat energy and double efficiency. The breakthrough enables the generation of electricity from geothermal sources or waste heat in hybrid cars.
Researchers studied vibrational energy flow through a water-surfactant-organic solvent system, finding that the shape of molecules plays a crucial role in heat transfer. The study reveals that different excitations travel along different paths and rates, leading to significantly longer energy transfer times.
Researchers have designed a traveling-wave engine that converts 18% of heat source energy into electricity, outperforming current thermoelectric devices. The device's high reliability and efficient energy conversion make it suitable for deep space probes.
Scientists have created a better thermal insulator by introducing structure on the nanometer length scale in materials. The new nanolaminates exhibit a three times lower thermal conductivity than conventional insulators, due to the strong impediment of heat transfer at the interfaces.
Researchers developed synthetic jets that produce two to three times as much cooling with two-thirds less energy input, overcoming fan limitations. Vibration-induced droplet atomization technology also uses tiny cooling liquid droplets to carry heat away from components.
Researchers have developed a novel method to measure the energies involved in DNA synthesis, providing insights into DNA damage and its repair mechanisms. The study's findings can inform the development of targeted external agents to halt incorrect DNA synthesis.
Researchers found that carbon nanotubes exhibit lower thermal conductivity when integrated into other materials due to interfacial resistance. Despite this, they remain optimistic about using nanotubes to improve insulating materials.
The new material has up to five times the fracture toughness of conventional alumina, making it more forgiving under dynamic loads. It also exhibits high electrical conductivity ten trillion times greater than pure alumina, with interesting thermal properties that make it suitable for thermal barrier coatings.
Scientists using NASA's Global Climate Model found that oceans are storing more heat due to rising atmospheric temperatures. The study predicts significant ocean warming in the Eastern Pacific Ocean and increased precipitation over the North Atlantic, with potential biological consequences for ocean life.
The EVAP-COND software simulates the performance of evaporators and condensers with various cooling agents, enabling engineers to optimize designs. This tool helps conserve energy while reducing laboratory testing and design-to-production time.
Researchers found that radioactive elements like potassium could supply enough heat to maintain the magnetic field, contradicting previous studies. The discovery helps explain Earth's long-lasting magnetic field and may shed light on the planet's core composition.
Researchers have developed a prototype device that can cool solid steel in just two minutes, outperforming conventional refrigerators. The innovative technology uses superlattices to achieve unprecedented cooling efficiency, paving the way for CFC-free and reliable electronic heat pump systems.
Researchers have developed thin layer silicon with improved lattice vibrational frequency, leading to a 30% increase in thermal conductivity. This breakthrough enables faster charging and more efficient heat conduction in digital semiconductor devices.
A new NASA-funded study reveals that human-caused land-use changes significantly contribute to climate change, potentially more so than greenhouse gas emissions. The research proposes a method for comparing different climate change factors, highlighting the importance of land surface changes in redistributing heat and affecting regiona...
Recent research suggests that West Antarctic ice streams are experiencing normal variability, contrary to predictions of imminent shutdown and sea-level rise. The study found that local conditions, such as geothermal heat and frictional forces, drive the slowdown or speeding up of ice streams.
Researchers have developed a semiconductor technology that converts waste heat into electricity with unprecedented efficiency. The new device, called 'thermal diodes,' operates at high temperatures and has the potential to revolutionize power generation and recovery of waste heat from power plants and automobiles.
Researchers found a significant difference in movement on each side of the Eastern California Shear Zone, with one side moving more than the other due to varying heat flow properties. This discovery provides a more accurate method for modeling earthquake data and could be applicable in many places.
Researchers from the University of Pennsylvania discovered that carbon nanotubes can conduct heat exceptionally well, potentially addressing overheating issues in microchips. The discovery could lead to applications in various fields, including electric motors and aircraft components.