Re: please answer these question


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Posted by Harold Kestenholz - Hydronic Network on June 02, 2001 at 11:46:55:

In Reply to: please answer these question posted by zaib on June 02, 2001 at 08:00:07:

Carbon deposits or coking occurs when the cup is hot enough to distill the lighter elements before they are thrown from the cup. Some fuels can be so heavy as to leave solid deposts glued to the surface when cool. Change in the air pattern may adjust the cup temperature.
: 2- are there any special tools avaible for this purpose? Scraping with knives or chisel was a usual way to clean the cup. Solvents will clean.
: 3- we keep open c.b.d. valve of boiler continuiosly because our make-up water is zeolite treated;while during same time we feed chemicals to boiler via feed water supply.certainly it is causing loss of chemicals
: through c.b.d.valve.what we can do to check this loss?
The continuous blowdown is used to meet the treatment rate. The rate of blowdown is adjusted to the rate of required chemical feed.
: 4-what is meant by accelerated circulation?(this question has been asked by our board of examinning enggs. but i have not found its answer yet)?
The English meaning is assumed from the two words accelerated and circulation. Unfortunately some young person decided to coin a concept without attaching the concept to a situation. This is often done when techies do not know the previous or more common terminology, so coin new combinations of words to fit their private world. Circulation can accelerate due to the mechanical means of a circulator or injector; or due to thermal change in density of boiling and cooler waters. The rejoinder is to ask the questioner which means he would prefer to discuss.





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