Units:
Allows the user to specify the units of measure that will be used to specify
input and output parameters. The Expansion Tank Selection Program offers the
options of either U.S. (English) or SI (System International) units.
Fluid Type:
Clicking on the
Fluid Type Drop
Down Menu will
allow the User to
make Expansion
Tank Selections
based on the
Fluid Types.
Pipe Material:
Clicking on the Pipe Material Drop Down Menu will allow the User to specify either
Copper or Steel Pipe for the system being sized.
System Volume (gal):
Enter the total volume of fluid in the system. The total system volume should include the
amount of fluid in the piping system (including all valves and fittings) as well as in the
pumps and other equipment in the system.
Minimum of Initial Fill or Operating Temperature (F):
Enter the minimum of either the initial fill temperature or the minimum expected
operating temperature. This temperature will be used to establish the lower level of
the operating range for which the expansion of the system fluid is calculated. As
such, it should be the lowest temperature that the system will ever be expected to
see. For example, in a heating system, the minimum temperature will probably be the
temperature of the water when the system is filled (approximately 50-55F). In a chilled
water system, the minimum temperature will probably be experienced while the system
is operating and will be equal to the design temperature leaving the chiller. The
allowable range for this value is 40.0 to 240.0 F.
Maximum Design Temperature (F):
Enter the maximum expected system temperature. This temperature will be used to
establish the highest level of the operating range for which the expansion of the
system fluid is calculated. As such, it should be the highest temperature that the
system will ever be expected to see. For example, in a heating system, the maximum
temperature will probably be the temperature of the water leaving the heat source
(boiler). In a chilled water system, the maximum temperature will probably be
experienced on a hot summer day when the system is down for maintenance and the
ambient temperature causes the system fluid temperature to rise. The allowable range
for this value is 40.0 to 240.0 F.
Minimum of Initial Fill or Operating Pressure (psig):
Enter the minimum of either the initial fill pressure or the system operating pressure.
The allowable range for this value is 0.0 to 300.0 psig).
Maximum Design Pressure (psig):
Enter the maximum expected system pressure. The allowable range for this value is 0.0
to 300.0 psig.