Keyword: Heating, ventilation, and air conditioning systems (HVAC)

Briefs: Mechanical & Fluid Systems
Chilled panels use less energy than conventional A/C and work in open spaces.
Briefs: Mechanical & Fluid Systems
An enhanced polymer could be used for more energy-efficient systems with a smaller carbon footprint.
Briefs: Mechanical & Fluid Systems
The sensor monitors the oil circulation ratio in real time for heating, ventilation, air conditioning, and refrigeration systems.
Briefs: Imaging
The system turns faces into thermostats, providing more comfort with less energy.
Briefs: Energy
The system is effective in urban environments where there are tall buildings on all sides.
Briefs: Wearables
The patch could serve as a personal thermostat and save energy.
Briefs: Electronics & Computers
This on-skin electronic device provides a personal air conditioner without electricity.
Briefs: Mechanical & Fluid Systems
A simple modification can improve the capability of turbulent heat exchangers by 500%.
Articles: Electronics & Computers
While most cars today run on 12-volt DC batteries, cars in the future will run on 48 volts. This increased voltage could affect ball bearing performance.
Briefs: Materials

A heat-rejecting film was developed that could be applied to a building’s windows to reflect up to 70 percent of the Sun’s incoming heat. The film remains highly transparent...

Briefs: Electronics & Computers
Water-Based Battery Stores Solar and Wind Energy

Wind and solar energy generation creates challenges, since the Sun only shines by day, and sometimes the wind doesn't blow. Another variability is surges of demand on the grid. On a hot day when air conditioning is in use, utilities must have load-balancing strategies to meet peak demand. A...

Articles: Aerospace
Airfoil Performance Monitor (APM) John Maris, Puthy Soupin, Ludovic Laberge, and Marie-Hélène Larose
Marinvent Corporation
Saint-bruno, Quebec, Canada...
Facility Focus: Research Lab

The Naval Research Laboratory (NRL) began operations in 1923 as the United States Navy's first modern research institution, and it continues today as one of the Navy's premier R&D resources. NRL's early 20th...

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: Communications

Many industrial and commercial plants, government and private research facilities, and industrial facilities perform potentially dangerous processes. Automated warning and alarm systems alert personnel to...

Application Briefs: Software

Broadcasting employs the latest technology in many areas, but controlling the broadcast hardware connected to the antenna and the related transmission power, source, and facilities is usually still a...

Briefs: Mechanical & Fluid Systems
Variable-Aperture Reciprocating Reed Valve

NASA’s Marshall Space Flight Center engineers have developed a new reed valve for controlling fluid flow back and forth between two chambers. The VARR valve provides two-way flow that is proportional to flow demand. As the pressure gradient builds on one side, the reed valve responds by opening an...

Briefs: Medical
Hydrostatic Hyperbaric Oxygen Treatment Chamber

A hyperbaric chamber has been designed to achieve the goals of maximizing safety, minimizing complexity, and minimizing cost of hyperbaric chamber therapy. This design minimizes the volume of compressed gas in the chamber, and eliminates the need for complex gas mixing, carbon dioxide scrubbing,...

Briefs: Materials

Modern mechanical carbon materials are being used in a wide variety of applications, including aircraft gear boxes, air turbine motor starters, and main shaft seals for both aircraft...

Articles: Test & Measurement

There are a variety of reasons we need to know the temperature of an object or a process — to prevent product damage, ensure sterilization, determine biological health, ensure...

Articles: Robotics, Automation & Control

Over the past several years, controls engineers have become adept at applying control systems to machine safety applications. The issue is that safety is a moving target....

Articles: Sensors/Data Acquisition

Wireless controls have been widely accepted and embraced in the industrial community. Widespread use of monitoring devices in the process industry, the deployment of RFID components in a...

Application Briefs: Energy

Discussions of the efficient use of energy have become more frequent in many sectors of industry. Machine tools comprise numerous motors and auxiliary components whose energy consumption can vary strongly...

Briefs: Test & Measurement

A new type of projection schlieren camera system (schlierenscope) is more portable, easier to align, and more versatile than existing systems. The schlierenscope is a projection focusing...

Briefs: Software
Station Spacewalk

The Station Spacewalk game enables players to virtually conduct NASA repair work on the International Space Station, including jobs critical to help power up the space station so it can continue to operate. Players are provided with a limited quantity of oxygen during which they must complete extravehicular activities (EVAs)...

Briefs: Physical Sciences

Wildfires that start in backcountry areas sometimes burn for hours before being detected and reported. Satellites offer a vantage point from which infrared sensors can detect fires. Individual satellites...

Articles: Robotics, Automation & Control

Biologically inspired robots are being realized by engineers and scientists all over the world. While much emphasis is placed on developing physical characteristics for robots such as human-like faces or...

Briefs: Mechanical & Fluid Systems
Lightweight, Flexible, Freezable Heat Pump/Radiator for EVA Suits

For space exploration missions that may require extended stays and extensive extra-vehicular activity (EVA) operations, the temperature control system must be lightweight, rugged, non-venting, and repairable in space.

Briefs: Sensors/Data Acquisition

Car air conditioners operate in all seasons to keep the cabin temperature cool in summer and warm in winter. In summer, for air conditioning systems without humidity...