Velox boiler transfers heat from the gas at a much higher rate than the rate achieved with subsonic flow when the gas velocity exceeds the speed of sound. The advantages of this theory are applied to attain large heat transfer from a smaller surface area in this boile…

A good boiler should have the following characteristics: The boiler should have maximum steam generation rate with minimum fuel consumption. It can be started or stopped quickly. Its initial cost, running and maintenance cost should not be high. Its erection time shou…