Conversion of Thermal Energy to Electrical Energy using NTC

The basic aim of this paper is to depict the process by which temperature changes in the resistance of NTC can reflect in the output voltage which further can be used to produce various range of voltages. The output is connected to a siren circuit indicating whenever there is an increase in output voltage beyond certain value, the siren rings.The output is also connected to a comparator circuit for further analyisis of the amount of voltage produced. Thus with effective utilization of this circuit, it can be used in recovery of waste heat in industries, to generate power in geothermal heat and from the thermal gradient in sea (OTEC), generator driven by Solar energy or in pumps which are continuously driven by heat. There is variety of applications of this circuit model like temperature measurement and regulators. We can utilize the waste heat which is generated in various industrial processes in generating high output voltage by varying the temperature across the thermistor.