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What are specifications of boiler water?

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What are specifications of boiler water?

Recommended Guidelines for Boiler Water Treatment

ANALYSIS RECOMMENDED USAGE
pH Total Alkalinity Phosphates Total Hardness Chlorides Total Dissolved Solids Sulfites Specific Conductance Oxygen 10-11 200-700 ppm 30-100 ppm 0-50 ppm 60-200 ppm 2000 ppm Maximum 20-30 ppm < 700 micro ohms cm < .007 mg/liter

What is a boiler feedwater tank?

Feedwater tanks are heated storage tanks that do not have a specific deaerating section and operate at atmospheric pressure. In addition to being a feedwater reservoir, these tanks also act as condensate receivers, cold-water makeup locations and as a point for chemical injection.

What are the most important parameters in the fresh water supply in the boiler feedwater?

The most important parameters are: conductivity, pH, sodium and silica concentration and as the primary corrosion parameter, oxygen content.

Why is boiler feedwater treatment necessary?

Proper treatment of feedwater is the most important task in operating any boiler. Scale that collects and forms inside the boiler has lower ability to transfer heat than steel and will raise the metal tube temperatures, creating blisters and overheating failures.

What are the characteristic features of high pressure boilers?

Characteristics of a High Pressure Boiler

  • Power of Steam: Steam is formed when water expands 1600 times.
  • Combustion Efficiency:
  • Thermal Efficiency:
  • Fuel-to-Steam Efficiency:
  • Stack Temperature and Losses:
  • Excess Air:
  • Radiation and Convection Losses:
  • Heating Surface:

Why is it important to monitor the pH levels in the boiler feedwater and condensate system?

Low makeup or feedwater pH can cause serious acid attack on metal surfaces in the preboiler and boiler system. Even if the original makeup or feedwater pH is not low, feedwater can become acidic from contamination of the system.

Which type of pump is usually used to regulate chemical flow in a boiler feedwater system?

Two type of feed pumps are generally used in boilers-positive displacement type and centrifugal type.in some pumps special device or accessory is used to keep the water at saturation pressure and release over pressure. The feed pump raises the feedwater to a pressure high enough for it to enter the boiler.

How does a boiler feedwater treatment system work?

Boiler feedwater is an essential part of boiler operations. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat. After the steam is used it is then dumped to the main condenser.

What is Fullform pH?

♦ The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance. The pH scale was devised in 1923 by Danish biochemist Søren Peter Lauritz Sørensen (1868-1969).

What is TDS in boiler water?

1 – To control the level of total dissolved solids (TDS) within the boiler. As water is boiled within the boiler and steam is produced, then the solids remain in the water and concentrate. Thus, over time the level of total dissolved solids (TDS) increases.

What are the advantages of high pressure boiler?

Advantages of High-Pressure Boilers:

  • These boilers require less floor space to install the setup.
  • Forced Circulation of water is used in High-Pressure boilers which ensures positive circulation of fluid/water.
  • The tendency of scale formation is minimized due to the high velocity of the water.