Constructional difference between Low Pressure and High Pressure Boiler

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Constructional difference between Low Pressure and High Pressure Boiler

A boiler is an instrument that is invented to heat water and produce energy. Before being distributed throughout the system the heat is applied to water in an enclosed container. The major difference between a low-pressure and a high-pressure boiler is the amount of pressure pounds per square inch gauge and per square inch that the boiler produces.

Low-Pressure Boiler Definition

In a low-pressure boiler the pressure does not go beyond 15 psi, and hot water heating boilers are not designed to go beyond 260 psi. The temperature in a low-pressure boiler will not rise above 250° F. Because these types of boilers operate at lower pressures, they don't need to be checked regularly and only have to be checked when the appliance begins to break down.

High-Pressure Boiler Definition

High-pressure boilers will heat steam above 15 psi and water at pressures that go beyond 160 psi. Temperatures in high-pressure boilers will go beyond 250 °F. Because of the elevated pressure at which these boilers operate, to ensure safety at all times it need to be observed. High-pressure boiler operators must audit safety devices, switches, valves, and leaks on a regular basis. To prevent further occurring damage any malfunctions need to be fixed immediately

HIGH PRESSURE BOILER

LOW PRESSURE BOILER

In high pressure boilers, steam pressure is above 15 psi.

In low pressure boilers, steam pressure never goes beyond 15 psi.

Hot water pressure always go beyond 260 psi

Water pressure never go beyond 260 psi

Temperature in high pressure boiler will always be greater than 250oC.

Temperature in low pressure boiler will never be greater than 250oC.

For the safety due to high working pressures, these boilers are required to be checked all the time.

Since these boilers work on low working pressure, they don’t need continuous check.

Applications involve production of steam in power plant and in industries

These are used for water heating and steam which is used to heat rooms.

In high pressure boilers for similar size, the output is relatively high.

In low pressure boilers for similar size, the output is relatively less.

It requires high maintenance

It requires low maintenance

The operating costs are comparatively high

The operating costs are comparatively low.

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