Vandens šildymo katilo "Nardi WA_G/2300" darbo efektyvumo didinimo galimybių tyrimas

Abstract

This paper presents research of water boiler "Nardi WA-G/2300" operation modes. Purpose of the study - to determine the temperature mode in smoke tract of the water heating boiler and obtain research data which can be used to improve the efficiency of the boiler. Water heating boiler was fired with fine-cut logging waste, which reached up to 32% humidity. Studies have shown that time from starting the boiler and water reaching the operating temperature in the boiler was 95 min. During this phase, the temperature of combustion (smoke) products reached a maximum value - 800 C°. Subsequent studies of temperature mode in the smoke tract were carried out at the steady-state operation of the boiler. The survey data showed that in the steady-state mode of operation of the water boiler, smoke temperature in the furnace and over heated surfaces was 705 C°, past heated surfaces - 215 C°, in the chimney - 135 C°. Operating in this mode efficiency of the water boiler was 0,7, however, using a latent heat of evaporation, boiler efficiency can be increased up to 0,84.