Keyword: Heat transfer

Briefs: Energy
A flexible device worn on the wrist harvests heat energy from the human body to monitor health.
Briefs: Electronics & Computers
The thermal management technology could also be used for server farms and spacecraft.
Briefs: Materials
The flexible composites can be used as thermal insulation for environments of up to 1200 °C.
Briefs: Robotics, Automation & Control
This material could be used for artificial muscles that power bio-inspired robots.
Briefs: Materials
These carbon-based fillers can be used in thermally conductive clothing such as liquid-cooled garments.
Briefs: Aerospace
This multifunctional hybrid laminate composite can be used for residential and commercial construction.
Briefs: Materials

Unlike water, liquid refrigerants and other fluids that have a low surface tension spread quickly into a sheet when they come into contact with a surface. For many industrial...

Briefs: Electronics & Computers

Polymers are regularly used as thermal insulators and can even be used as thermal conductors to enable efficient heating or cooling. A new type of polymer was created that demonstrates...

Q&A: Aerospace

Professor Hopkins and University of Virginia colleagues — in collaboration with materials scientists at Penn State, the University...

Briefs: Materials

When Navy SEALs carry out dives in Arctic waters, or when rescue teams are diving under ice-covered rivers or ponds, the survival time even in the best wetsuits is very limited — as...

Briefs: Mechanical & Fluid Systems

The wetting behavior of a liquid on a solid surface is a phenomenon of significant practical importance. The angle of liquid-to-solid contact is important in areas such as adhesion,...

Briefs: Imaging

Technological advancements in materials, sensors, and computing have driven demand for higher-performance satellites. Satellites need to be much more capable in a much smaller size with a...

Articles: Materials

With very little fanfare, a special class of alloys has been finding its way into our daily lives. From indestructible eyewear, to smartphone cameras, to coronary stents, this material is...

Briefs: Electronics & Computers

In multi-layer and multi-fluid plate and fin heat exchangers, fluid ports are required to be located on the side of the heat exchanger....

Q&A: Communications

Using flexible conducting polymers and novel circuitry patterns printed on paper, researchers in Dr. Yee’s laboratory have demonstrated...

Briefs: Electronics & Computers

A collective rattling effect in a type of crystalline semiconductor was discovered to block most heat transfer while preserving high electrical conductivity — a rare pairing...

Articles: Software

As new concepts need to be investigated, and a wide range of operating conditions has to be considered, the design of new products and processes must push the limits of...

Briefs: Electronics & Computers
Integrated Three-Dimensional Module Heat Exchanger for Power Electronics Cooling

Critical elements in the operation of electric drive systems are power electronics and power semiconductor packages. Improving thermal management of power electronics can help reduce the cost, weight, and volume of electric drive systems, and thus increase market...

Application Briefs: Electronics & Computers
Siemens PLM Software
Plano, TX
www.plm.automation.siemens.com

The use of lithium-ion (Li-ion) batteries has made the electric vehicle (EV) a...

Briefs: Mechanical & Fluid Systems

Aspacecraft thermal control system must keep the vehicle, avionics, and atmosphere (if crewed) within a defined temperature range. Water coolant loops are typically used to transport...

Briefs: Mechanical & Fluid Systems
Low-Power, Lightweight, Ultra-Compact Reverse Water Gas Shift Reactor

Utilizing CO2 to produce H2O and O2 is critical for sustained manned missions in space, and supports both NASA’s cabin Atmosphere Revitalization System (ARS) and ln-situ Resource Utilization (ISRU) concepts. For long-term missions beyond low...

Briefs: Mechanical & Fluid Systems

Heat exchangers are used for the transfer of heat between two or more media. The media may be separated by a solid wall so that they never mix, or they may be in direct contact. Heat exchangers may be used in HVAC systems,...

Briefs: Software
Numerical Method to Predict the Evaporation Time of a Water Droplet Attached to a Solid Boundary in the Presence of Fluid Flow

One of the objectives of the In-Situ Resource Utilization (ISRU) RESOLVE project was to extract water from lunar regolith by heating and then capturing and quantifying the released water. A potentially large error in...

Briefs: Manufacturing & Prototyping
Additively Manufactured Modular Thrust Chamber

Thrust chambers have historically been difficult to manufacture. They require extensive tooling and labor, and are expensive with long lead times. Thrust chambers were designed for manufacture using conventional machining. As a result, designs required multiple pieces to ensure machine tool access...

Briefs: Mechanical & Fluid Systems

Fluid-pumped radiators are used to reject heat from structures to space. A fluid travels inside the structure to collect heat, and then travels...

Briefs: Aerospace

Turbine film cooling flows typically are subject to jet detachment and reduced cooling effectiveness for high blowing rates. Current concepts to improve jet attachment involve impractical or overly complex hole designs...

Briefs: Materials

NASA seeks to license the Adaptive Thermal Management System (ATMS) for use in commercial applications. Developed at the John F. Kennedy Space Center, the ATMS provides a way to regulate heat transfer and...

Briefs: Materials

The Johnson Space Center researched methods to coat aerogel insulation in order to make it better able to withstand vibration, mechanical compression and...

Briefs: Materials
Insulative Carbon Fiber Systems for Aerospace Applications

New insulative carbon-fiber composite systems have been developed for use in structural and thermal applications for the aerospace vehicle interface. The sandwich-type composite structure, including carbon fiber and aerogel blanket materials, is based on the previously disclosed family...