Keyword: Cooling

Q&A: Photonics/Optics
Professor Qiaoqiang Gan of the University at Buffalo (NY) and his team developed a unique two-in-one system that uses solar energy for simultaneously cooling and heating — without electricity.
Briefs: Materials
Inspired by camel fur, a two-layered material could provide extended cooling to preserve the freshness of perishable goods.
Q&A: Mechanical & Fluid Systems

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

Briefs: Medical

Materials scientists are looking to nature — at the discs in human spines and the skin of ocean-diving fish — for clues about how to design materials with both flexibility and stiffness. The...

Briefs: Electronics & Computers

High-tech refrigerators have been used to reach temperatures as close to absolute zero as possible — 0 kelvin or -273.15 °C. Physicists aim to cool equipment to as close to absolute zero as...

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: 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: Robotics, Automation & Control
Expendable Cooling System for Venus Lander Concept

This innovation is a concept for a novel thermal architecture that would enable a day-long surface mission on Venus. A Venus lander mission could last much longer than a few hours on the surface of the planet by absorbing heat from the Venus environment, and from the electronics within the...

Briefs: Manufacturing & Prototyping

While precise and fast, the down side to cutting with microsecond (ms) fiber lasers has been that the parts require a number of post-processing operations after they are cut, which add...

Briefs: Mechanical & Fluid Systems
Thin-Film Evaporative Cooling for Side-Pumped Lasers

A highly efficient way to cool solid-state crystal lasers was developed. This thin-film evaporative cooling technique offers higher optical efficiencies and monochromatic quality than traditional conductive cooling techniques. Developed for use in side-pumped 2.0- micron laser systems used in...

Briefs: Sensors/Data Acquisition
MMOD Risk Mitigation Technology for Spacecraft Thermal Protection Systems

The proposed concept uses sensors to detect high-temperature plasma ingestion during entry through a breach in the thermal protection system (TPS) caused by a micrometeoroid orbital debris (MMOD) impact. It uses consumables usually available on human-rated spacecraft such...

INSIDER Product: Electronics & Computers

TECA Corp. (Chicago, IL) has introduced a powerful new thermoelectric air conditioner for enclosure cooling. The AHP-690 Model features compact dimensions and 55% more cooling capacity than coolers of similar size. As a...

Briefs: Materials
High-Efficiency, Easy-to-Manufacture Engineered Nanomaterials for Thermoelectric Applications

Stated generally, reducing the dimensionality of bulk-scale thermoelectric (TE) materials is theoretically and practically understood to be a viable route for maintaining/increasing phonon scattering, and maintaining/increasing electrical conductivity...

Briefs: Medical

Today, medical devices are made using a variety of plastic materials and manufacturing processes. Advances in plastic processing make it possible to obtain virtually any shape, form, or function. In...

Briefs: Physical Sciences

The NASA Solar Probe Plus (SPP) mission will fly into the Sun’s corona, reaching as close as 9.86 solar radii from the center of the Sun. Power generation for the spacecraft will be...

Application Briefs: Aerospace

The Cryogenic Refuge Alternative Supply System (CryoRASS), and a smaller liquid air-filled backpack under development at NASA Kennedy Space Center’s (KSC) Biomedical Lab, have the...

Articles: Photonics/Optics

Imagine a CCD camera operating on a long exposure and seeing only 1 electron per pixel every 16 minutes. That equates to dark current of less than 0.000001 electrons/pixel/sec. Imagine the same camera...

Briefs: Mechanical & Fluid Systems
A Reversible Thermally Driven Pump for Use in a Sub-Kelvin Magnetic Refrigerator

A document describes a continuous magnetic refrigerator that is suited for cooling astrophysics detectors. This refrigerator has the potential to provide efficient, continuous cooling to temperatures below 50 mK for detectors, and has the benefits over existing...

Articles: Manufacturing & Prototyping
AquaSonus Passive-Sonar Pool Alarm William C. Roberts, Bob Hoenig, and Paula Bailey,
AquaSonus.com, Merrimack, NH

Drowning is the second leading cause of death for children, and most drownings...

Articles: Photonics/Optics

Laser diodes for telecommunications have traditionally used thermoelectric coolers (TECs) for precision temperature control to improve diode output levels and maintain wavelength...

Articles: Electronics & Computers

As the cooling challenges in embedded system applications have multiplied due to increased processing performance, smaller package and system footprints, and the requirement to operate in more...

Briefs: Physical Sciences
Composite Bipolar Plate for Unitized Fuel Cell/Electrolyzer Systems

In a substantial improvement over present alkaline systems, an advanced hybrid bipolar plate for a unitized fuel cell/ electrolyzer has been developed. This design, which operates on pure feed streams (H2/O2 and water, respectively) consists of a porous...

Articles: Electronics & Computers

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...

Briefs: Software
Computational Simulation of a Water-Cooled Heat Pump

A Fortran-language computer program for simulating the operation of a water-cooled vapor-compression heat pump in any orientation with respect to gravity has been developed by modifying a prior general-purpose heat-pump design code used at Oak Ridge National Laboratory (ORNL). Although it is...

Articles: Electronics & Computers

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...

Articles: Electronics & Computers

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...

Briefs: Mechanical & Fluid Systems
Miniature Electrothermal Thruster

A report proposes a miniature electrothermal spacecraft engine. The engine would include a chamber with an inside length of ≈1.5 cm and inside diameter of ≈0.25 cm, with a dielectric (ideally diamond) sidewall lining, a metal-coated expansion nozzle at one end, and a metal electrode at the other end. A...

Briefs: Test & Measurement

Figure 1 depicts an apparatus that simultaneously and synchronously records magnified ordinary top-view video images and laser-shadowgraph video images of a sessile...

Briefs: Materials

Improved polymer electrolyte membranes for direct methanol fuel cells can be made by impregnating the baseline membrane material with cross-linked polystyrene (a copolymer of styrene...

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