AET has significant experience working on renewable energy and biofuels projects throughout the Upper Midwest. We have provided geotechnical engineering, pavement engineering and/or construction materials testing on over 1,000 wind turbines in the last ten years. In addition, we provide professional engineering, environmental, testing and forensic services on biofuel, hydroelectric and solar projects.
Geotechnical investigation is an integral part of wind turbine generator (WTG) foundation design. Dynamic shear modulus is typically determined from shear wave velocity profiles at each WTG foundation during cone penetrometer testing (CPT), but can be measured with refraction microtremor (ReMi) testing when shallow bedrock or other conditions prevent CPT testing. AET also provides resistivity testing (Wennar Array) for electrical grounding design and laboratory thermal resistivity testing for buried electrical conduit design.
AET provides emissions testing services for the biofuels industry that include the measurement of volumetric airflow, specialized volatile organic compounds, hazardous air pollutants, total hydrocarbon concentrations, particulates, nitrogen oxides, sulfur dioxide and carbon monoxide. We also provide stack testing to determine the emissions and destruction efficiencies of DDGS dryer thermal oxidizers and removal efficiencies of fermentation and process scrubbers. In addition, we offer testing services to determine emissions from DDGS coolers, baghouse, boilers and various process vents.