Allowable Parameters for Boiler Make Up Water

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Boiler make up water is an essential element in maintaining the efficiency and safety of a boiler. It is the water that is added to the boiler to make up for any water lost due to evaporation, blowdown or other losses. The allowable parameters for boiler make up water are important for ensuring the proper functioning of the boiler. It is important to understand what these parameters are and how they affect the boiler's performance.

The most important parameter for boiler make up water is the total dissolved solids (TDS). The TDS of the make up water must be monitored closely to ensure the proper functioning of the boiler. The TDS of the make up water should be kept to a minimum, as higher levels can cause scaling and corrosion of the boiler components. The pH of the make up water should also be monitored, as it affects the corrosion rate of the boiler components. The pH of the make up water should be slightly alkaline, usually between 7.5 and 8.5.

The hardness of the make up water should also be monitored closely. Hardness is determined by the amount of calcium and magnesium salts in the water. Hardness levels above 200 ppm can cause scaling and other problems in the boiler. The oxygen content of the make up water should also be monitored, as oxygen can cause corrosion of the boiler components. The oxygen content should be kept to a minimum, usually below 0.1 ppm.

The silica content of the make up water should also be monitored. Silica can cause scaling and corrosion of the boiler components. The silica content should be kept below 20 ppm. The chloride content of the make up water should also be monitored, as high levels can cause corrosion of the boiler components. The chloride content should be kept below 200 ppm.

The alkalinity of the make up water should also be monitored. Alkalinity is a measure of the ability of the water to neutralize acids. Alkalinity should be kept between 50 and 150 ppm. Finally, the temperature of the make up water should be monitored, as it affects the efficiency of the boiler. The temperature of the make up water should be kept between 180 and 210 degrees Fahrenheit.

These are the main allowable parameters for boiler make up water. It is important to monitor these parameters closely to ensure the proper functioning of the boiler. By following these parameters, the efficiency and safety of the boiler can be maintained.

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