Ball Valve Assembly Yields Linear Flowrate Control

Innovators at NASA Johnson Space Center have developed an adjustable thermal control ball valve assembly which utilizes a unique geometric ball valve design to facilitate precise thermal control within a spacesuit. The technology meters the coolant flow going to the cooling and ventilation garment, worn by an astronaut in the next generation space suit. Read on to learn more.

Process Enables Machines to Thermally “Breathe”

Large machines can breathe in and out cooling blasts of water to keep their systems from overheating.

Cladding and Freeform Deposition for Coolant Channel Closeout

This method is a faster way to manufacture combustion chambers and nozzles for aerospace propulsion as well as heat exchangers in oil and gas applications.

An Immersive Solution for Thermally Safer EV Batteries

An R&D project indirectly leads to potentially greater power density, EV range, and battery life.

System Provides Cooling with No Electricity

This passive device relies on a layer of material that blocks incoming sunlight but lets heat radiate away.

Polymer Coating Cools Down Buildings

This coating acts as a spontaneous air cooler and can be fabricated, dyed, and applied like paint.

Using Laser Metal Printing to Cool Computer Chips

Traditionally, electronics are cooled using a heat sink that transfers the heat generated by the electronic system into the air or a liquid coolant. For the heat sink to work, it has to be...

Medium-Frequency Transformer Transitions from AC to DC

Traditionally, electronics are cooled using a heat sink that transfers the heat generated by the electronic system into the air or a liquid coolant. For the heat sink to work, it has to be...

Freeform Channel Close-Out for High-Performance Heat Exchangers

Large-scale liquid rocket engines with regeneratively cooled nozzles will enable reliable and reduced-cost access to space. The coolant that circulates through the internal...

Self-Regulating, Freezable Heat Exchanger for Spacecraft

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 heat...

Liquid Cooling Technology for LEDs

Best quality LED A-lamp light bulbs provide a superior, energy-efficient alternative to incandescent bulbs, which have essentially been banned as of January 1, 2014. LED bulbs offer the same amount of light as...

Conjugate Heat Transfer

The controlled transfer of heat from a component to its surroundings is critical for the operation of many industrial processes. For example, cooling of electronics components is needed to maintain safe operation and...

Water Membrane Evaporator

Simplified Load-Following Control for a Fuel Cell System

A simplified load-following control scheme has been proposed for a fuel cell power system. The scheme could be used to control devices that are important parts of a fuel cell system but...

Assemblies of Conformal Tanks

Assemblies of tanks having shapes that conform to each other and/or conform to other proximate objects have been investigated for use in storing fuels and oxidizers in small available spaces in upper stages of...

Qualifying Software for Nuclear-Safety-Related Calculations

The Department of Energy’s (DOE) Oak Ridge National Laboratory (ORNL) High Flux Isotope Reactor (HFIR) is the highest- flux reactor-based source of neutrons for condensed-matter...

Direct Spray Liquid Cooling Systems

For decades military platforms have included electronics for avionics, vehicle controls, radios, radar, sonar and fire control. From a computational standpoint most of these systems could be accomplished with...

Techniques for Cooling Power and Other Electronic Devices

All electronic devices generate heat due to their unavoidable internal losses and inefficiencies. The higher the efficiency rating of the device, the less internal heat is generated...

Improved Thermal Modulator for Gas Chromatography

An improved thermal modulator has been invented for use in a variant of gas chromatography (GC). The variant in question — denoted as two-dimensional gas chromatography (2DGC) or GC-GC...

Filtered Conduction Empowers Mil-Spec Desert Systems

As embedded computing systems become more powerful, so are the challenges to protect and cool the payload. In the past few years, we have seen the power of a single board increase in most...