What is the importance of water quality in a boiler system?

What is the importance of water quality in a boiler system?

Poor water quality can cause scaling, decreased efficiency, leaks, or worse, and achieving and maintaining the appropriate water quality for a given hydronic heating system helps ensure the system’s longevity and performance.

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.

Which of the following is a characteristics of water tube boiler?

Water-tube boilers are best suited to relatively high pressure operation (>40 bar) and have good response to changes in load demand. Tubing is arranged to suit the type of heating fluid, its temperature and pressure, and heat transfer characteristics coupled with the operating conditions of the boiler water.

What are the boiler water quality parameters that needed to be maintained?

The most important parameters to control in boiler applications are conductivity and pH. These are measured in different streams from boiler feed water to boiler water to condensate return. pH plays a vital role in boiler water control. A slightly alkaline pH must be maintained to prevent corrosion.

What are the characteristics 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:

What is the function of boiler water?

The main objectives to treat and condition boiler water is to exchange heat without scaling, protect against scaling, and produce high quality steam. The treatment of boiler water can be put into two parts.

Which is an important factor to determine if the water has a corrosive or scale forming tendency?

The pH of the medium plays a significant role in both scale formation and corrosion. At low pH values (4-6) corrosion is controlling while at high pH values (7-9) scale is predominant.

What are the characteristic features of high pressure boilers?

Why is water treatment necessary in water tube boiler enlist the characteristics of a water tube boiler?

Water for boilers. All natural waters contain varying amounts of suspended and dissolved matter as well as dissolved gases. Feedwater must be pretreated to remove impurities to control deposition, carryover, and corrosion in the boiler system. Poor quality water gives poor quality steam.

What are the characteristics of good water quality?

Physical characteristics of water quality

• Color – pure water is colorless; colored water can indicate pollution.
• Turbidity – pure water is clear and does not absorb light.
• Taste and odor – pure water is always tasteless and odorless.

Why is water quality important?

Water quality testing is an important part of environmental monitoring. When water quality is poor, it affects not only aquatic life but the surrounding ecosystem as well. Physical properties of water quality include temperature and turbidity. Chemical characteristics involve parameters such as pH and dissolved oxygen.

Which of the following is a characteristic of modern boilers?

(1) Modern power boilers are water tube. (2) They use forced type of water circulation. (3) They use feed water heaters. (4) They use modern methods of firing viz.

What is boiler feed water and why is it important?

Proper treatment of boiler feed water is an important part of operating and maintaining a boiler system. As steam is produced, dissolved solids become concentrated and form deposits inside the boiler. This leads to poor heat transfer and reduces the efficiency of the boiler.

What are the feed-water purity requirements for a boiler?

Feed-water purity requirements therefore can vary widely. A low-pressure fire-tube boiler can usually tolerate high feed-water hardness with proper treatment while virtually all impurities must be removed from water used in some modern, high-pressure boilers.

What are the advantages of a water tube boiler system?

Significant advantages of a water tube boiler system include: Safe and easy operation Fast reaction to steam demand Provides highly efficient performance, up to 90\% with an economizer

What is a high capacity boiler?

Modern high capacity boilers are of water tube type. Basically, in this boiler, water will be flown inside the tubes surrounded by flue gases. More steam is generated by using this boiler, so the overall efficiency of the boiler is high.