A boiler is used for generating steam. It does this by heating water to its boiling point, after which steam will evaporate from it.
When you boil a kettle of water, you will shut off the fire or electric power when the water comes to a boil.
No so with a steam boiler. Generation of steam is a continuous process. Once a boiler is generating steam, it may take quite a long while before it is stopped. When steam is evaporated from the water, new water has to be added in to replace the water given out.
As more and more steam is evaporated, the water becomes more and more concentrated with salts and other impurities. If you use your kettle for a long while, you will see some chalky deposits inside it.
The fresh water supplied to replenish those lost through evaporation cannot be pure and free from salts. Even minute quantities of salt in the water will eventually become so concentrated as to form scales or deposits. The deposits are usually calcium or magnesium salts.
These scales are very damaging to the boiler because they interfere with the heat transfer and can lead to overheating and eventually, boiler rupture.
Soft water is water that contains very little calcium or magnesium salts. They are used to feed the boilers. However, they tend to be acidic in nature.
Acidic water tends to corrode. This is not good for the boiler. Corrosion can weaken the boiler.
By treating the boiler water with chemicals, we can control the acidity of the water as well as the softness of the water. This will solve the problem with scales and corrosion, but it is not the ultimate cure-all.
The boiler water will continue to become more and more concentrated as the steam evaporates. The next step to take is to remove the concentrated water and replenish it with fresh, soft water.
The process of removing the concentrated water is called blow-down.
Folks, close your ears!
Until next time?
Ease Up Your Educational Research Effort The Largest Online Library in the World with over 45,000 books, 360,000 journals, magazines, and newspaper articles all in their entirety. Create footnotes and bibliographies automatically. Excellent for High School Students, College Students, Educators. http://www.freemarine.com/linkquestialibrary .htm
Many years of working experience in Marine, Facilities, Construction has given the author material for writing e-books and articles related to engineering, and management. Subscribe to facworld ezine at mailto:facworld-subscribe@yahoogroups.com More information at http://www.free-marine.com and http://www.free-engineering.com
I propose that we give soldiers an ultra thin material,... Read More
Well many people out there are asking is there really... Read More
If we bring the locusts to a feasting area of... Read More
Soon scientists will have scaled down robotic insects. This is... Read More
Aerodynamics of a flying sphere. It has been said that... Read More
The HarmonicIn a good history book by a leading light... Read More
The circulation of print magazines has declined precipitously in the... Read More
"It is clear that modern medicine has created a serious... Read More
ASTROPHYSICS: - Many other entries will deal with knowledge from... Read More
'Kenyanthropus platyops': - Perhaps the 6,000,000 year old men found... Read More
So often when we see huge Natural Disasters there are... Read More
Using four UAVs in formation with one C-130 Hercules Aircraft... Read More
At West Point, in a speech, President George W. Bush... Read More
Using Smart Dust which is sprinkled onto a rock it... Read More
We can make diamonds using the Earth's inner forces, extreme... Read More
Light Bulb ScienceEver wonder how a light bulb works? I... Read More
Well have you heard the latest of the newest Doom... Read More
Using Shapes on Mobiles to confuse optic flow sensors in... Read More
We propose a Stealth Aircraft or non-stealth composite aircraft to... Read More
Your Soul Number, which defines your very essence or heart's... Read More
Remote Control Bacteria. Why not, we have remote control everything.... Read More
An electric current produces a magnetic field. This is the... Read More
The space suits we saw on the first Moon visit... Read More
TROJAN WORLD WAR: - Homer said there were nineteen battles... Read More
Some scientists argue over creation, intelligent design and evolution. Others... Read More
The much publicized stem cell research debate focusing on moral... Read More
I am beginning to wonder if scientists have been getting... Read More
The Hubble Telescope is famous worldwide for its amazing images... Read More
A few years ago I visited the Wyoming Contractor, which... Read More
There is no right way of saying this, so I'll... Read More
Experts from the United Nations and Indian Ocean countries agreed... Read More
In the US it appears that we have decided that... Read More
Wind Power is considered a clean industry and is amongst... Read More
I propose a lighter than air tubular unmanned mini blimp... Read More
The drought of the West appears to be the worst... Read More
ASTROPHYSICS: - Many other entries will deal with knowledge from... Read More
ICE AGES: - The impact of the ice ages and... Read More
Can we hibernate humans using hydrogen sulfide gas for long-term... Read More
Creating a Hurricane using a Space based laser array to... Read More
Since its discovery 20 years ago, the use of DNA... Read More
In the world of science, there is excited speculation about... Read More
We need a better vision system for the battlespace; an... Read More
A Thorn in the Side for American Business and Consumers... Read More
Solar power will be necessary for space exploration and off... Read More
An electric current produces a magnetic field. This is the... Read More
I have some friends who have the largest private meteor... Read More
Thought of the day. I talked to an old guy... Read More
Some skeptics of the geology text books we had in... Read More
Naval blockade using polymer goo to stop fleeing ships might... Read More
DNA Profiling and Its Uses in CourtStronger evidence in courtrooms-it's... Read More
A boiler is used for generating steam. It does this... Read More
Well many people out there are asking is there really... Read More
I propose research be done to make unmanned tunneling machines... Read More
We need solutions to our drought crisis in this country.... Read More
Alchemy. Such a misunderstood science. I hope this article can... Read More
Recently scientists were amazed that the space probes now leaving... Read More
DR. SENTIEL ROMMEL:As part of the research team that sought... Read More
Body piercing (defined as any piercing beyond the standard earlobe... Read More
It is difficult to have a discussion with someone about... Read More
'Kenyanthropus platyops': - Perhaps the 6,000,000 year old men found... Read More
There is no right way of saying this, so I'll... Read More
In History and Science:INSPIRATIONAL COMMENTS:"Everybody was glad that I was... Read More
Well it is written that God created man 5000 years... Read More
Plants, invertebrate animals, amphibians and even reptiles have the ability... Read More
Eco-terrorists assume some how they are helping the environment, by... Read More
The concept of "nature" is a romantic invention. It was... Read More
Science Articles |