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The basic objective of purging is to clean up the residual combustibles within the combustion chamber of the boiler rather furnace. The amount of purge air is determined by purpose of the purging. In boiler, out of 100% of the total air, about 30% is to fulfil the stoicheometric requirement of combustion and about 70% is the excess air.
Therefore, 30% air flow is sufficient to blow off the unburnt incombustible and saving thereby unnecessary wastage of fan power.
In another aspect, more than 30% supply may initiate explosive uncontrolled combustion of accumulated combustible within combustion zone if the air: fuel ratio is more air rich and having sufficient temperature to get ignited.
Therefore, assuming maximum 100% fuel availability at the time of purging within the combustion zone purging air is limited to 30% to avoid the air-rich condition as well as to complete the process of purging
What else can I help you with?
What is importance of checking conductivity in boiler water analysis?
Checking conductivity in boiler water analysis is important because it provides information on the total dissolved solids present in the water. High conductivity levels can indicate the presence of impurities or contaminants that can lead to scale formation on boiler surfaces, reducing efficiency and potentially causing equipment damage. Regular monitoring of conductivity helps ensure water quality is maintained within safe operational limits, promoting optimal boiler performance and longevity.
What percent of steam generated in a boiler is used for the steam atomizing burner?
Typically, around 1-2% of the total steam generated in a boiler is used for the steam atomizing burner, which is responsible for finely dispersing fuel oil for combustion. The majority of the steam produced is used for other processes such as heating, power generation, or industrial operations.
How do you add 60 percent to your total?
To add 60 percent to your total multiply the total by 1.6.
What is the total of 102.80 with 6 percent tax?
The total of $102.80 with 6 percent tax is $108.97
If your total is 264.66 what percent is 118 of this total?
44.59%
What is the total if 17510400 is 70 percent of the total?
25,014,857
What is a 8 percent sales tax of percent 32.97?
The total tax is $2.64 and the total price with tax is $35.61.
What is how do you have a 150 Get 50 as a percent?
If you have 150 and get 50 as your percent, that means half of total. Your total is 300 (150x2=300).
How do you find the frequency in frequency table if the given is percent of total?
find the frequency before finding the percent total -_- :)
What is boiler load?
Boiler load is the total "work" performed by the boiler. In residential application the boiler load usually refers to the total heat lost in a home on the coldest day of the year and is measured in the USA by British Thermal Units per hour. To find the load the accepted practice is to use the "Manual 'J' method. Appropriate software and some experience is necessary to gain meaningful results and proper size a boiler to the load. Boilers that are oversize use more fuel, suffer component failures and can create discomfort by lowering the average water temperature. Boilers sized below the load will not satisfy the thermostat on the coldest days of the year.
How much is 40 percent?
0.4 of the total 100 percent value.
What is the total percentage of 44 percent plus 34 percent?
78%
