STABILITY OF COAL WATER PUEL

In this paper, a novel sensor is presented for monitoring the stability of a coal water fuel. This sensor utilizes a non-radioactive electromagnetic source, making it more attractive in comparison to other existing sensors. It utilizes the interaction between the electromagnetic waves and the CVF composition. Two of these interactions are selected, namely, the transmitted and reflected signal, and are used to give an indication on the stability of the CVF. The sensor measures the concentration changes or structural variations in the CVF. Calibration of the sensor is performed, for a given pipe/tube and a given CVF, by changing the concentration of the CVF and recording the transmitted and refelected signals as functions of concentration. These calibration curves are then stored in a microcomputer. At any instant of tine, the CVF stability is measured by comparing the sensor response to the stored curves. This sensor is easy to use and is readily adapted for automation. To demonstrate the applicability of the technique, the sensor response is measured and calibration curves are extracted and presented here. In this paper, four commonly used stability measurement techniques are also discusse