Agricultural Decarbonization Gets New Emphasis At ORNL
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IMAGE: ORNL s non-disruptive air leak detector captures air escaping from exterior walls and uses refractive imaging to calculate the leakage flow rate. view more
Credit: ORNL, U.S. Dept. of Energy
Buildings - The mirage effect
A team of researchers at Oak Ridge National Laboratory has developed a method to detect and measure air leaking from a building s walls and roof that is quicker, cheaper and less disruptive to occupants.
Current air leak detection options, such as using a blower door and smoke or infrared thermography, are costly and invasive. ORNL s method is conducted from outside, using an imaging technique to visualize the flow of air leaks and calculate the volumetric flow of air based on the refraction effects imaged by cameras.
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IMAGE: The built environment, from roads to sidewalks to parking lots, affects the water cycle and climate. Scientists at ORNL have explored the use of statistical relationships for evaluating representations of. view more
Credit: Andy Sproles/ORNL, U.S. Dept. of Energy
Modeling - Urban climate impacts
Researchers at Oak Ridge National Laboratory have identified a statistical relationship between the growth of cities and the spread of paved surfaces like roads and sidewalks. These impervious surfaces impede the flow of water into the ground, affecting the water cycle and, by extension, the climate. We ve shown that there is a specific mathematical shape to the relationship between a city s population and the total paved area, ORNL s Christa Brelsford said. Using that, we examined climate model predictions and determined they correctly represent some important attributes we know about cities.