What is water column in boiler?

A water column is used on a steam boiler to reduce the turbulence and fluctuation of the water level so the gage glass can provide a steady, accurate water level reading. The use of a water column is not mandatory. The most common type of low water fuel cutoff is a float inside a chamber.

What is the purpose of water level indicator in boiler?

The function of a water level indicator is to indicate the level of water in the boiler constantly. It is also called water gauge. It helps the operator in keeping the level constant from outside through a glass tube. In case of need, if the level falls down, water will be pumped by the operator.

How do you calculate water makeup?

Cooling tower calculation

1. Cooling tower makeup calculation. Water Make Up = D + E +B.
2. Evaporation Loss = 0.00085 * 1.8 * C * Δt. C = Circulating water in.
3. Blowdown : B = E = Evaporation Loss in.
4. COC = Cycle of Concentration.
5. Capacity of cooling Tower.

Is water level indicator is a boiler mounting?

Construction: Normally two water level indicator are fitted into the boiler. These are fitted at the front end side of every boiler.

What is boiler efficiency formula?

Direct efficiency In order to calculate boiler efficiency by this method, we divide the total energy output of a boiler by total energy input given to the boiler, multiplied by hundred. GCV= Gross calorific value of the fuel.

What is the factor of evaporation in a boiler?

FACTOR OF EVAPORATION Water enters the boiler at 225°F. The boiler pressure is 100 psi and the boiler water temperature is 338°F. The latent heat is 881 Btu. What is the factor of evaporation? FE = SH + LH / 970.3 FE = SH + LH / 970.3

When does the density of boiler water decrease?

  The density of boiler water decreases as operating pressure increases.   The error can be significant, especially as operating pressures exceed 2000 psi, and on large steam drums with long visibility gages such as used in HRSG applications.

How much steam does a boiler produce per hour?

BOILER HORSE POWER What is the boiler horsepower of a boiler generating 21,500 lbs of steam per hour at 155 psi? The factor of evaporation is 1.08.

Why is the drum level always lower than the boiler level?

  The external measurement instrument will always indicate lower than the True Drum Level.   The magnitude of the level error depends on operating pressure and height of the water column.   The density of boiler water decreases as operating pressure increases.