Research Results of the Energy Supply System of a Cooker With Smooth Power Control

The article discusses the features of the operation of the energy supply system of a gasusing digester in the mode of proportional power control are discussed in the article. They are due to the fact that the process of preparing the product occurs in a dynamic mode: heating to a boil, cooking and cooling. These cycles are repeated with each new boiler loading. The main indicator of the efficiency of a boiler is its efficiency factor (COP). Two options for determining efficiency: calculated and experimental are considered. It is indicated that in the calculation method for determining efficiency, its value is significantly influenced by the specific heat capacity of the feed (product), which can vary over a wide range depending on the composition. It has been established that the accuracy of the calculation is significantly influenced by various heat losses for heating metal structures, for purging the steam jacket during the initial period of boiler operation, heat removed from the boiler body into the environment, energy losses with gases escaping into the atmosphere, determined by formulas in which various coefficients vary over a wide range. A more accurate method for determining efficiency is proposed - experimental. The total gas consumption for heating the product to a boil in automatic and manual modes, the gas consumption for compensating for heat losses and maintaining a quiet boil was determined separately by experimental studies. The useful energy component for heating the product to a boil was determined based on the results of experimental studies. The efficiency when the boiler operates in various modes is determined from experimentally obtained data on the total gas consumption and useful gas consumption.