Boiler 101 | What is a boiler? - Home | American Boiler ...
In watertube boilers boiler water passes through the tubes while the exhaust gases remain in the shell side passing over the tube surfaces. Because tubes can typically withstand higher internal pressure than the large chamber shell in a firetube watertube boilers are used where high steam pressures (3000 psi sometimes higher) are required.
The boiler receives the feed water which consists of varying proportion of recovered condensed water (return water) and fresh water which has been purified in varying degrees (make up water). The make-up water is usually natural water either in its raw state or treated by some process before use.
Aug 19 2019 · The boiling point of water at atmospheric pressure is 100°C or 212°F. By pressurizing the boiling system by giving it an airtight seal we can actually increase the boiling point. This is how pressure cookers work. An airtight vessel to increase the pressure to increase the boiling point.