Boiler Vertical Tube
A boiler is essentially a device for heating a liquid (usually water) so that it is above its boiling point so that it evaporates.
– fire tube where the fire is in the tubing with the liquid on the outside.
– water tube where otherwise, the water is in the tubing with the fire being outside.
Kerosene or diesel fuel is pumped with high pressure and comes out in a blur at the end of the nozzle, above the nozzle there is a high voltage diode to provide fire so that the oil that comes out is burned, usually behind the boiler there is a photo cell to monitor the fire if it has burned or not. not burnt this photo cell will turn off all bolier machines so that there is no unburned, and very dangerous, spray of oil.
Okay, let’s try a boiler for a steam turbine (steam turbine) Boilers generally consist of:
-Combustion chamber: where fuel is burned
-boiler drum: collects demineralized water, flows it into the tube and collects saturated steam that returns.
Economiser: water tube, its position is farthest from the heat source, its function is to heat water with residual heat so that heat efficiency is good.
-evaporator: water tube whose function is to evaporate water, its position is usually in the “middle”
-superheater: its function is to heat water vapor into superheated steam (further hot steam)
Steam turbine: its function is to convert heat energy into motion energy.
-condenser: its function is to change the vapor phase into water again
1. Demineralized water (water without mineral content/pure water) is pumped into the boiler from the condenser (we are talking about a steam turbine boiler with a closed water cycle) by pumping through the economiser pipe, in the economiser, the water receives heat but has not evaporated/still in the water phase.
2. The water enters the boiler drum and is forwarded to the entire water tube evaporator to be converted into saturated steam (steam you see when boiling water) / (saturated steam) and back again to the boiler drum.
3. Steam in the boiler drum is flowed (steam through the channel above, while water is below) to the superheater tube which is closest to the heat source to convert saturated steam into superheated steam.
4. The superheated steam kmdn is flowed to the steam turbine to drive the turbine blades.
5. After going through the turbine the steam temperature decreases/as well as the enthalpy, the phase changes back to saturated steam & flows to the condenser.
6.In the condenser the phase is changed back to the liquid phase and then pumped back to the boiler.
and the cycle returns to normal.
There are several advantages of WaterTube Boiler
Main feature
-Requires less water but produces steam faster (± 5 minutes)
-Compact design so it saves space for installation
-Safe so no need to worry about explosion hazard
-Lots of heat so that it is possible to achieve high efficiency
-Easy installation & workmanship in plumbin
-Save time for inspections and other maintenance checks.
While the Fire Tube Boiler Characteristics
– It takes longer about 35 to 40 minutes to get steam
– Boiler room is wider.