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# Steam & Condensate Equations

## Steam consumption and condensate generation when heating liquid or gas flows

Some common steam and condensate equations:

### Steam Heating

ms = h / 960                          (1)

where

ms = steam mass flow rate (lbs/hr)

h = heat flow rate (Btu/hr)

### Steam Heating Liquid Flow

ms = ql 500 SGl Cpl dtl / Ls                         (2)

where

ms = steam mass flow rate (lbs/hr)

ql= volume flow liquid (gallons per minute, gpm)

Cpl= specific heat capacity of liquid (Btu/lb oF)

SGl= specific gravity of fluid

dtl= temperature difference liquid (oF)

Ls= latent heat steam (Btu/lb)

### Steam Heating Air or Gas Flow

ms = qg 60 ρg Cpg dtg / Ls                          (3)

where

ms = steam mass flow rate (lbs./hr.)

qg = volume flow gas (cubic feet per minute, cfm)

ρg = density of the gas (lb/ft3)

Cpg = specific gravity of the gas

dtg = temperature difference gas (oF)

Ls = latent heat steam (Btu/lb)

## Related Topics

• ### Thermodynamics

Thermodynamics of steam and condensate systems.

## Related Documents

• ### Arithmetic and Logarithmic Mean Temperature Difference

Arithmetic Mean Temperature Difference in Heat Exchangers - AMTD - and Logarithmic Mean Temperature Difference - LMTD - formulas with examples - Online Mean Temperature Calculator.
• ### Condensate Generated in Cold Steam Pipes - SI Units

Huge amounts of condensate are generated when cold steam pipes are heated up must be drained from the pipes.
• ### Condensate Generated in Cold Steam Pipes - Sizing of Steam Traps

When cold steam pipes are heated up they generate huge amounts of condensate that must be drained away from the pipe through steam traps - in Imperial Units.
• ### Condensation of Steam - Heat Transfer

Heat transfer when steam condensates.
• ### Flash Steam Generation - Fundamental Physics

Tutorial to the basic physics behind flash steam generation
• ### Liquid, Steam and Gas - Flow Coefficients Cv

Calculate flow coefficients for the design of control valves - Imperial units.
• ### Properties of Saturated Steam - SI Units

Saturated Steam Table with steam properties as specific volume, density, specific enthalpy and specific entropy.
• ### Sizing Steam Pipes (kg/h)

Steam is a compressible gas where pipe line mass flow capacity depends on steam pressure.
• ### Sizing Steam Pipes (lb/h)

Steam is a compressible gas where the capacity of a pipe line depends on the size of the pipe and the steam pressure.
• ### Steam Consumption for some Typical Steam Heated Consumers

Steam consumption rates for typical steam heated consumers in industries like bakeries, breweries, paper factories etc.
• ### Steam Control Valves - Calculate Flow Factor Kv

Designing steam control valves and their Kv values.
• ### Steam Heating Processes - Load Calculating

Calculating the amount of steam in non-flow batch and continuous flow heating processes.
• ### Steam Heating Systems - Classifications

Steam systems carries heat through pipes from the boiler to consumers as heat exchangers, process equipment etc.
• ### Steam Heating Systems - Design

An introduction to the basic design of steam heating systems.
• ### Steam Pipes - Online Pressure drop Calculator

Calculate pressure drops in steam distribution pipe lines.

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## Citation

• The Engineering ToolBox (2005). Steam & Condensate Equations. [online] Available at: https://www.engineeringtoolbox.com/steam-condensate-heating-d_889.html [Accessed Day Month Year].

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