Equipment


Heat- and Mass-Transfer Interrogation Apparatus

Heat & Mass Transfer Interrogation Apparatus
By direct gravimetric measurement, this custom-built experimental apparatus is capable of evaluating the transport rate and resistance of dilute water vapor through porous barrier materials presenting a resistance of 30 s/m or greater at atmospheric pressure. Thus, water vapor mass transport rates through porous barrier materials with channels ranging from 1 micron to sub-nanometer can be accurately interrogated. Simultaneously, evaporative cooling efficacy (i.e., surface temperatures and heat flux rates) of porous barrier materials can be probed for input heat fluxes ranging from 50 W/m2 up to 2000 W/m2. This apparatus can also provide human thermal comfort data for textiles, fabrics, and membranes similar to ASTM F 1868, the sweating hot plate method. Porous bulk materials under scrutiny must be at least 45 mm in diameter.

Kestrel 4000 Portable Weather Station
Manufacturer Specifications
Kestrel 4000 Portable Weather Station
The Kestrel 4000, manufactured by Neilsen-Kellerman, is an all-in-one portable weather station capable of real-time data reporting via PC interface or logging 2000 data points at up to 1 Hertz. This device can simultaneously monitor and report barometric pressure, altitude, relative humidity, heat stress index, dew-point, wet bulb temperature, density altitude, wind chill, ambient temperature, current wind speed, average wind speed, and maximum wind gust speed. The Kestrel 4000 can be used to anchor a remotely-located weather station, perform energy audits and assessments, and monitor real-time ecological conditions critical to human performance in extreme environments.

Closed-loop Subsonic Wind Tunnel

Closed-loop Subsonic Wind Tunnel
This closed-loop wind tunnel features a 15 cm X 15 cm working section that is 25 cm long made of clear polycarbonate, enabling real-time experimental visualization. Available working section speeds range from 7 m/s to 12 m/s. This tunnel can be adapted to run 2-dimensional flow experiments over a variety of shapes. It can also accommodate scaled models with wingspans up to 12 cm. Closed-loop wind tunnels like this one offer superior flow quality and low vorticity compared to open-loop tunnels, and measurements taken in closed-loop tunnels are better insulated from environmental variation than are open-loop tunnel measurements.

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