Heating Systems - Steam and Condensate Loads

Calculating steam and condensate loads in steam heated systems

The two basic situations common when calculating steam and condensate loads in steam heated systems are

  • heat transfer through areas
  • heating up materials

Heat Transfer through Areas

Heat transfer through areas can be expressed as:

Q = U A dt         (1)

where

Q = quantity of heat transferred trough the area

U = heat transfer coefficient

A = heat transfer area

dt = temperature difference between the steam and the secondary heated fluid

Heating up Materials

The heat needed to heat up materials can be expressed as:

Q = w cp (t2 - t1)         (2)

where

w = weight of material

cp = specific heat of the heated material (Check Material Properties to find specific heat for materials)

t1 = initial temperature of the heated material

t2 = final temperature of the heated material

Heat Rate

The heat rate is the heat transferred per unit of time.

Heat Transfer Rate through Areas

The formula for calculating the heat transfer rate for heat transfer through an area can be expressed as:

Q' = Q / (L h) = U A dt /(L h)         (3)

where

L = Latent heat of evaporated (condensation) steam (Check Steam Tables to find latent heat, SI or Imperial Units)

h = available time

Heat Transfer Rate when heating up Materials

The formula for calculating the heat transfer rate for heating up materials can be expressed as:

Q' = Q / (L h) = w cp (t2 - t1) /(L h)         (3b)

Related Topics

  • Steam and Condensate - Steam & condensate systems- properties, capacities, pipe sizing, systems configuration and more

Related Documents

Matched Content

Tag Search

Search the Engineering ToolBox

- "Search is the most efficient way to navigate the Engineering ToolBox!"

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your SketchUp model with the Engineering ToolBox - SketchUp Extension/Plugin - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!
About the Engineering ToolBox!

close