观看免费视频 Systems Installed in Commercial Buildings B-Roll
动画说明：
This free, downloadable B-roll footage from the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) is for use by news media and education organizations. This high-resolution video features clips of industrial geothermal applications in Denver, Colorado, including shots of a church with a geothermal heat pump (GHP) system and its rooftop air circulation/exchanger and filter system, a maintenance crew working on the electrical/mechanical system, indoor monitoring and control and pipe systems, exterior shots; and a GHP system at a fire station and its internal piping system.