Articles tagged with Heat Exchange
Researchers at Arizona State University have discovered an overlooked physical process that significantly impacts sweat's cooling effect in hot, dry environments. The study found that temperature and humidity can create an opposing upward flow near the skin, canceling out airflow and increasing body heat storage.
Researchers documented over 200 marine ecosystem disruptions in a year of unprecedented ocean warming, highlighting the need for year-round monitoring and assessment to support conservation efforts. Impacts were not limited to traditional summer heatwaves, with evidence of ecological disruption across seasons.
Researchers create polymer heat exchanger with 2-4 times more cooling capacity per dollar than metal versions, offering a cost-effective and scalable solution for industries. The design's deployable nature makes it ideal for space missions, drones, and compact electronics.
Researchers investigated e-beam propagation through ionospheric plasma using particle-in-cell simulations. Nonrelativistic e-beams exhibit laminar-to-turbulent transition with beam compression factor quantified for the first time.
The new facility can test thermal performance of heat exchangers and cooling equipment up to five megawatts, supporting the growing $30 billion data center cooling industry. SwRI offers customized testing services, including coolant distribution units and secondary side pumps, and replicates real-world conditions.
Researchers found that heat transfer values increase dramatically at distances less than ten nanometres, exceeding theoretical predictions by a factor of one hundred. This phenomenon challenges current understanding of heat transfer in the nanometre range.
Researchers at Pohang University of Science & Technology experimentally demonstrated the existence of nanometer-sized liquid clusters in supercritical fluids, overturning the prevailing notion of a single phase. These clusters persisted for up to an hour and have significant implications for industrial processes and natural environments.
Southwest Research Institute (SwRI) is expanding its heat exchanger testing capabilities to include megawatt-scale performance evaluations. This move addresses a significant market gap for high-heat transfer rates involving high-temperature and -flowrate applications in data centers, defense, and other fields.
Researchers developed a quantum cooling engine that manipulates energy flow without feedback control, relying solely on quantum measurements. The engine successfully reversed heat flow, with entanglement found to influence the energy exchange between the working substance and measurement apparatus.
Engineers developed a scalable method for creating topography-patterned aluminum surfaces with high-resolution wettability contrast. The surfaces exhibit distinct behaviors from superhydrophobic to hydrophilic, offering improved phase-change heat transfer applications.
A research team analyzed energy fluxes and cold frontal effects on Lake Vanajavesi in Finland, finding that lakes can regulate regional energy exchange. Cold fronts enhanced heat exchange, creating sharp temperature and vapor pressure differences.
Researchers have developed a new method to map heat transfer at the nanoscale level, allowing for pinpointing of overheated components in electronic devices. This technique uses luminescent nanoparticles and achieves high resolution thermometry up to 10 millimeters away.
New studies from Chalmers University of Technology suggest that hydrogen-powered aircraft could meet the needs of 97% of intra-Nordic flights and 58% of Nordic passenger volume by 2045. A novel heat exchanger technology has shown promise in reducing fuel consumption by almost eight percent.
Researchers from Kyushu University found that ocean-atmosphere coupling enhances teleconnection patterns, leading to more meandering jet streams and extreme weather events. The study highlights the significance of extratropical ocean-atmosphere interactions in climate variability.
Scientists at the University of Illinois have created polymer networks with dynamic bonds that can selectively absorb specific frequencies of sound and vibrations. This innovative material has the potential to improve hearing protection for individuals exposed to loud noises, such as military personnel or helicopter pilots.
Researchers found that Arctic seals' unique nasal structures allow them to conserve 94% of water during breathing, giving them an evolutionary advantage in the Arctic. The study's findings suggest that similar adaptations could be beneficial for other species in diverse environments.
Researchers found that a rise in South Atlantic temperature caused a release of trapped CO2 into the atmosphere, affecting climate regulation. This process has implications for current climate change and potential collapse of the AMOC.
A University of California, Riverside-led team found that anthropogenic aerosol-driven changes in ocean circulation and interbasin heat transport are more effective in altering oceanic heat distribution than those driven by globally increasing greenhouse gases. This advance in understanding will help develop climate mitigation strategies.
A research team at CityU developed a multifunctional composite polymer coating with both radiative and non-radiative cooling capacity, enhancing heat dissipation in wearable electronics. The cooling interface achieved temperature drops of over 56°C, improving the performance of skin electronic devices.
Researchers found that echidnas blow bubbles from their nose to cool down, using the evaporation of moisture as an evaporative window. They also utilize flexible spines for insulation and lose heat through the spineless areas on their underside and legs, acting as thermal windows.
A new method to improve solid-state hydrogen fuel cell charging times has been developed by researchers from the University of Technology Sydney. The study used a semi-cylindrical coil heat exchanger, which significantly improved heat transfer performance and reduced charging time by 59%. This innovation has the potential to revolution...
Researchers at ORNL developed a theory that thylakoids help plants tolerate harsh conditions, while a digital platform informs on hydropower development. AI-powered neutron scattering can also accelerate experiments, and e-waste recycling is being explored.
Researchers have created a new approach to edit genes within specific bacteria in a community using CRISPR-Cas9, enabling targeted genetic modifications. This technology could be used to track edited microbes and potentially treat diseases like digestive issues or create more resilient crops.
Researchers at West Virginia University have developed a wood boiler system that improves bird health and reduces carbon dioxide emissions by drying litter and creating dry heat. The system has the potential to replace propane heating systems in poultry farms, benefiting both animal welfare and the environment.
Researchers have created two novel heat recovery systems for LNG ships, boosting energy efficiency by up to 25%. The systems use the organic Rankine cycle (ORC) to recover heat from engine exhaust gas, with substantial improvements in performance depending on fluid combinations.
Researchers from The University of Electro-Communications and Tokyo University of Agriculture and Technology found that sintering porous media inside heat transfer tubes increases the area available for heat exchange, reducing thermal resistance and enhancing heat transfer performance. Heat transfer in these tubes is five times greater...
Researchers developed a new material that can form nanoscale thickness water-resistant coatings with self-healing properties. The coating is robust enough to survive scratches and has potential applications in various industries.
Researchers at the University of Illinois designed a tube-in-tube heat exchanger with significantly higher volumetric power density than current state-of-the-art devices. The optimized design enables more efficient energy transfer in industries requiring compact and high-performance heat exchangers.
A European project developed standard solutions for energy refurbishment, considering various climate zones. These packages include prefabricated façades, decentralized ventilation systems, and smart ceiling fans to reduce energy consumption and improve comfort. Pilot sites showed significant savings and improvements in tenant well-being.
Researchers at RMIT University developed highly versatile, cost-effective 3D printed catalysts that could tackle the challenge of overheating in hypersonic aircraft. The new catalysts show promise for fuelling the future of hypersonic flight by simultaneously cooling the system.
Research reveals lakes promote latent heat mixing but suppress carbon dioxide exchange compared to other land surfaces. The findings published in Advances in Atmospheric Sciences highlight the need for future field experiments to investigate energy and carbon dioxide exchange at different scales.
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 have developed biphilic surfaces that significantly improve defrosting efficiency on heat exchangers. The unique surface design enables the removal of frost and slush from superhydrophobic regions before complete melting, reducing cleaning time and energy consumption.
A team from Aarhus University and Vestas Aircoil is developing a new composite material to replace heavy, expensive cast iron components in massive ship engines. The goal is to reduce weight and chemical treatment costs, making maintenance easier and more efficient.
A new thermoelectric material has been developed using strontium titanate and titanium oxide, allowing for the transformation of exhaust heat into electrical energy. The material's biphase structure and nanosized grains increase its thermoelectric efficacy, enabling devices to operate at high temperatures without overheating.
Researchers discovered that adding an organic solvent to common water-based turbulent heat exchange systems can boost their capacity to move heat by 500%. This approach achieves 10 times more improvement than other methods, revolutionizing heat exchange in HVAC and large-scale applications. The additive is non-corrosive, non-flammable,...
Researchers develop new mathematical model to optimize geothermal heat exchanger design, ensuring energy efficiency and economic viability. The model avoids unrealistic assumptions, providing accurate predictions for long-term thermal response behavior.
Researchers used computer simulations to test the hypothesis that ankylosaurs' nasal passages acted as heat exchangers, warming and cooling air to regulate body temperature. The study found that the nasal passages could have provided energy savings of up to 84% during exhalation simulations.
A Purdue University-led team developed a new material that enables more efficient solar-powered electricity generation by reducing the cost of converting sunlight into heat energy. The innovation could make solar power a direct competitor to fossil fuels in generating electricity.
Researchers have developed a low-cost material coating technique that mimics the Lotus effect, providing superhydrophobic properties. The technology can minimize fouling in heat exchangers and improve corrosion resistance.
Researchers have developed innovative sorbents using metal organic frameworks (MOFs) that can store large amounts of water vapor, offering an energy-efficient cooling method. MOFs are also being used in thermally driven heat pumps and zeolite thermal storage systems to capture waste heat and store it for later use.
Researchers developed a DESICCANT-ENHANCED EVAPORATIVE (DEVAP) system that works in any climate and achieves comfortable cooling while saving 40% to 80% of the energy use of conventional air conditioning systems. The system uses micro-porous membranes to separate desiccant from air, enabling efficient dehydration and cooling.
Georgios Vatistas's Swirl Flow-Type Heat Exchanger reduces energy demands and environmental resource usage by 40 times, offering broad industrial applications.
Researchers have developed a technology that reduces air pollutant emissions from chicken and swine barns by up to 79% while recovering heat. The system uses biofiltration and heat exchangers to temper fresh air and generate heat, reducing energy consumption.
The Sandia Cooler technology significantly reduces the energy needed to cool processor chips in data centers and large-scale computing environments. It achieves this by efficiently transferring heat across a narrow air gap, minimizing boundary layer thickness and fouling problems.
Engineers at Oregon State University have invented a new method to produce low-temperature microchannel heat exchangers using surface-mount adhesives. This technology could make it possible to manufacture these devices less expensive and open up new opportunities for next-generation computers, lasers, and other applications.
Researchers found that changes in wind patterns drive variations in the depth of the surface layer of seawater, affecting air-sea exchange and carbon storage. This impacts biological productivity by altering nutrient availability for phytoplankton growth.
Researchers have created a hydrogen storage system that can fill up a vehicle's fuel tank within five minutes with enough hydrogen to drive 300 miles. The system uses metal hydride to absorb hydrogen gas and incorporates a heat exchanger to efficiently remove heat generated during absorption.
Scientists at the University of Liverpool have found that natural variability in the Earth's atmosphere is masking the overall effect of global warming in the North Atlantic Ocean. Heat stored in the North Atlantic has a complex pattern, suggesting that natural changes in the atmosphere also play a role.
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.
A Duke University-led study found that North Atlantic Ocean surface waters warmed from 1950 to 2000 due to natural wind patterns called the North Atlantic Oscillation (NAO), not human-caused global warming. The subpolar regions cooled while subtropical and tropical waters warmed
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.
A team of paleontologists analyzed stegosaur plates to rule out thermoregulation as a function. Instead, they suggest that the plates may have been used for species recognition, similar to African antelopes. The analysis also found that scutes on other dinosaur ancestors had similar internal structures, supporting this theory.
Researchers at University of Illinois developed a new microchannel heat exchanger design to improve ammonia refrigerant efficiency. The new system significantly reduces refrigerant charge while increasing heat transfer capability.