A senior geothermal analyst from the National Renewable Energy Laboratory examines a heat sensor to make sure it's in working order before the wire attached to the sensor descends 500 feet under the IKEA store construction site in Centennial, Colorado. This store is being built with geothermal heating and cooling. Image courtesy of DOE/NREL, Credit - Patrick Corkery.
Originally uploaded in Integrate.
Image 30314 is a 235 by 350 pixel JPEG
Uploaded: Aug19 11