The device rejects waste heat to the atmosphere where it cools the waters temperature to a lower degree. The cooling towers may use the evaporation of water to remove process heat to allow the working fluid to cool or they can rely solely on the air to cool the working fluid.
Boilers can be classified into the following configurations:
Pot Boiler: A water container is heated from a fire heat underneath the “kettle”.
Flued Boiler: One or two large flues—an early type or forerunner of fire- tube boiler.
Fire Tube Boiler: A small amount of air is left in the boiler barreling order to accommodate the steam.
Water Tube Boiler: A furnace is filled with tubes of water. These could be used in high pressure applications.
Flasher Boiler: A specific Water Tube Boiler where close tubes of water is pumped through them.
Fire Tube Boiler with Water- tube firebox: The fire box will contain tubes filled with water which then allows the water to pass through a fire tube boiler.
Sectional Boilers: Water is contained inside cast iron sections, which are assembled on site in order to complete the boiler.
A water system is one in which hot or chilled water conveys heat to or from a conditioned space or a process. The water is circulated through piping connecting a boiler, water heater or chiller with suitable terminal heat transfer units located at the space or process. Hot water heating and chilled water cooling systems are frequently referred to as Hydronic Systems. Hydronic Systems are generally classified according to operating temperatures.