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Technical
Information
PBBS Equipment
Co . is pleased to offer you the following technical
resources in Adobe PDF format. If you do not have Adobe
Acrobat Reader, you can download
a free copy.
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| Maintaining
a Boiler Log - A boiler log provides a written
record of the boiler operating conditions on a given
day and at a given time. If you would like to begin
a boiler log program, please contact
us. |
| Avoiding
Thermal Shock is a crucial topic for anyone
running hot water boilers. To prevent a surprise
in your hot water system, contact
us to discuss your control strategy. |
| Low
water levels pose a hazard and should be avoided
at all costs. Read the article on low
water control hazards and avoid problems in
your boiler room. |
| Learn
the important aspects of putting your boiler up
for the season with this informative article on
boiler
lay-up. |
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- The
Efficiency Facts Booklet is designed to clearly
define boiler efficiency.
- The
Boiler Guide is the foremost guide on all aspects
of boiler room equipment.
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Engineering Calculations
These calculations are only meant to serve as guidelines.
They are not warranted or guaranteed by PBBS, and in no way
should be relied upon or serve as a substitute for the services
of a qualified and competent professional engineer.
| Question:
| How
large should a boiler feed tank be?
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| Answer:
| The
boiler feed tank should be large enough to supply
about ten minutes of water with the boiler running
at full output and the make-up valve to the boiler
feed system shut. Keep in mind, we are talking about
the flooded capacity of the feed tank. The tank
is typically only half full and, therefore, really
will only provide about 5 minutes of feed water
(if the make-up valve is shut or defective). Also,
if the steam system is for heating, the tank may
need to be bigger than what is described in this
"rule of thumb", and depends on several additional
factors such as EDR, set back, etc.
Enter your boiler horsepower in the field below
and click on the "Calculate Tank Size" button to
estimate your tank size requirements.
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| Question:
| Can
I determine the capacity of a feed tank based on
its dimensions?
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| Answer:
| Yes,
it is very easy. The formula is 5.8 times the diameter
(in feet) squared times the length (in feet) equals
flooded capacity (in gallons).
Enter your tank dimensions (in feet) in the fields
below to estimate the capacity of any feed tank
(in gallons).
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