Microwave Doppler flow sensor for chemical looping combustion systems

We report on the development of a microwave Doppler sensor designed for the measurement of mass flow rates of oxygen carrier particles in a chemical looping combustion system. The high temperature and pressure in the combustion system imposes difficult constraints on the sensor design. We describe a recently developed microwave launcher and report recent room-temperature testing of the microwave electronics. A novel approach for real-time analysis of the sensor output is described and demonstrated. We will show independent extraction of the stream velocity and the mass density.