DefinePK

Abstract

Electrical conductivity of composite materials based on alkaline earth metal carbonates and carbon dispersions was studied, the possibility of regulation of the electro-physical properties, temperature coefficient of electrical resistance, electrical conductivity was shown. Samples of compositions of composites with different conductive phase content were obtained and studied. A model of an experimental installation of an instantaneous water heater with a heating element based on alkaline earth metal carbonates and carbon dispersions was developed and its main technical parameters were identified. In the instantaneous water heater water is heated when passing through the heater, and electric power is consumed only during the use of hot water. Heating temperature of water is 353 K and does not dependent on water flow rate in the range of 50 - 100 ml/min. The required voltage for water heating is 12 ... 40 V (this low voltage is safe and is a guarantee of reliable and long-term work).