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# Steam Boiler Shells - Stress vs. Boiler Pressure

The stress in a steam boiler shell can be calculated as

σ = P D / 2 t                                    (1)

where

σ = hoop stress (Pa, N/m2)

P = boiler pressure (Pa, N/m2)

D = diameter of boiler shell (m)

t = thickness of boiler shell (m)

## Related Topics

### • Sizing of Steam and Condensate Pipes

Dimensions of steam and condensate pipe lines. Calculate pressure losses, recommended velocities, capacities and more.

## Related Documents

### Boiler - Efficiency

Combustion gross and net calorific value.

### Boiler Blowdown

Suspended solids in the feed water will remain in the boiler when steam is generated.

### Boiler Blowdown Rate

Calculate boiler blowdown rate.

### Boiler Capacities

Steam boilers output can be expressed in Boiler Horsepower, MBTU or in Pounds of Steam delivered per hour.

### Boilers - Classification

Classification of boilers according the ASME Boiler and Pressure Vessel Code.

### Fixed Pipes - Stress vs. Change in Temperature

Temperature changes introduces stress fixed pipes.

### Properties of Saturated Steam - SI Units

Saturated Steam Table with steam properties as specific volume, density, specific enthalpy and specific entropy.

### Saturated Steam - Properties - Imperial Units

Steam table with sensible, latent and total heat, and specific volume at different gauge pressures and temperatures.

### Stress

Stress is force applied on cross-sectional area.

### Stress in Thick-Walled Cylinders or Tubes

Radial and tangential stress in thick-walled cylinders or tubes with closed ends - with internal and external pressure.

### Stress, Strain and Young's Modulus

Stress is force per unit area - strain is the deformation of a solid due to stress.

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