Efficiency of the small capacity hot water boilers

In this paper we considered some experimental results of old hot water boiler BZUI-100 and new boiler type DTX-0.7. As a experimental results efficiency of these hot water boiler type DTX-0.7 is 24.1 % more than boiler type BZVJ-100 and heat loss is lower. Incomplete combustion is high in the operation of the small capacity hot-water boiler type BZUI-100, whish caused by faulty design or not according to composition and quality of coal. Coal consumption of boiler type BZUI-100 is high because of this efficiency is low. Along with the development of the economy, coal clean utilization and saving for the heat generation has become one of the most important tasks for the sustainable development of the society in the near future.