Why is conductivity of water important?

Why is conductivity of water important?

The reason that the conductivity of water is important is because it can tell you how much dissolved substances, chemicals, and minerals are present in the water. Higher amounts of these impurities will lead to a higher conductivity.

Why is water used in thermal power plant?

In 2015, thermal power generation—anything that burns fuel to create gas or steam that pushes a turbine—used 133 billion gallons of water per day. That water is mostly for cooling the equipment, but some of it is also used for emissions reduction and other processes essential to operating a power plant.

What does conductivity in water indicate?

Conductivity is a measure of the ability of water to pass an electrical current. Because dissolved salts and other inorganic chemicals conduct electrical current, conductivity increases as salinity increases. Conductivity is also affected by temperature: the warmer the water, the higher the conductivity.

What is power plant conductivity?

Degas conductivity is used as an indicator of water quality in the water/steam cycle of power stations. These can be particularly damaging to the blades in the steam turbine. Degas conductivity is measured after the water sample has flowed through a resin and has had carbon dioxide removed by a degassing process.

Do thermal power plants need water?

Thermal power plants in India use water for cooling purposes and the disposal of fly ash, a byproduct in combustion processes.

Which fluid is used in thermal power plant?

The working fluid in thermal power plant is water, which is heated in a boiler to generate the steam that drives the steam turbine. In the turbine, the steam expands and provides energy to move the turbine.

What unit is conductivity of water measured in?

The basic unit of measurement of conductivity is the mho or siemens. Conductivity is measured in micromhos per centimeter (µmhos/cm) or microsiemens per centimeter (µs/cm). Distilled water has a conductivity in the range of 0.5 to 3 µmhos/cm.

What is cation conductivity in boiler water?

Cation conductivity is the most common measurement in the steam/water cycle of a power plant. It uses standard conductivity sensors and transmitters, but conditions the sample with a cation exchange cartridge ahead of the sensor to remove ammonia which allows more sensitive detection of contaminants such as chlorides.

What is water conductivity in boiler?

For boiler water, the conductivity increases at the rate of approximately 2\% (of the value at 25°C) for every 1°C increase in temperature. This can be written as: Example 3.12.3. A boiler water sample has an unneutralised conductivity of 5 000 μS/cm at 25°C.

What is cation conductivity in a power plant?

Cation conductivity is the most common measurement in the steam/water cycle of a power plant. It uses standard conductivity sensors and transmitters, but conditions the sample with a cation exchange cartridge ahead of the sensor to remove ammonia which allows more sensitive detection of contaminants such as chlorides.

How does temperature affect the electrical conductivity of water?

An increase in temperature results in an increase in electrical conductivity. For boiler water, the conductivity increases at the rate of approximately 2\% (of the value at 25°C) for every 1°C increase in temperature. This can be written as: σ T = σ25 [1 + α (T – 25)] σT = Conductivity at temperature T (µS / cm)

What are the main aspects of conductivity of boiler water?

The main aspects are the great temperature difference and high pH. An increase in temperature results in an increase in electrical conductivity. For boiler water, the conductivity increases at the rate of approximately 2\% (of the value at 25°C) for every 1°C increase in temperature.

What are the effects of thermal power plant on the environment?

In a thermal power plant, which uses water at high pressure and temperature, these dissolved substances behave differently than they would at normal temperature and pressure. They cause formation of scales on the inner surface of tubes or react with the tube material and corrode it. These effects are undesirable.