Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
mobile - visible on handheld devices - alternatively go to www.engineeringtoolbox.com!
Engineering ToolBox > Steam and Condensate Loads in Heating Systems
The two basic situations common when calculating steam and condensate loads in steam heated systems are:
Heat transfer through areas can be expressed as:
Q = U A dt (1)
where
Q = quantity of heat transferred trough the area
A = heat transfer area
dt = temperature difference between the steam and the secondary heated fluid
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 capacity 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
The heat rate is the heat transferred per unit of time.
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
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)