be required.
The designer should select the efficiency for the
desired type of boiler, unless a life cycle cost
analysis indicates that a change in equipment
efficiency is warranted. If the result of the life
cycle analysis recommends a higher efficiency, the
designer should consult multiple boiler
manufacturers to ensure that the desired efficiency
is available and modify the specification
accordingly.
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The boiler shall be provided with a water column with gauge glass and
fittings including water column and gauge glass drain valves of the
straight through type. The steam heating boiler shall be capable of
operating at the specified maximum continuous capacity without damage or
deterioration to the boiler, its setting, firing equipment, or auxiliaries.
The rated capacity shall be the capacity at which the boiler will operate
continuously while maintaining at least the specified minimum efficiency.
Design conditions shall be as follows:
a.
Boiler design pressure 200 kPa 30 psig.
b.
Operating pressure at boiler outlet [_____] kPa psig.
c.
Steam temperature 120 degrees C 250 degrees F.
d.
Feedwater temperature [_____] degrees C degrees F.
e.
Outdoor ambient air temperature [_____] degrees C degrees F (max),
[_____] degrees C degrees F (min).
f.
Site elevation [_____] m feet.
g.
Maximum continuous capacity [_____] kg pounds of steam per hour.
h.
Rated capacity [_____] kg pounds of steam per hour.
i.
Maximum exhaust stack temperature [_____] degrees C degrees F.
j.
[Boilers with a capacity less than 90 kW 300,000 Btuh shall have
an Annual Fuel Utilization Efficiency of at least 75 percent.]
[Gas fired boilers with a capacity of greater than or equal to 90
kW 300,000 Btuh and less than or equal to 733 kW 2,500,000 Btuh
shall have a thermal efficiency of at least 79 percent.] [Gas
fired boilers with a capacity greater than 733 kW 2,500,000 Btuh
shall have a thermal efficiency of at least 80 percent.] [Oil
fired boilers with a capacity greater than or equal to 90 kW
300,000 Btuh shall have a thermal efficiency of at least 83
percent when fired at the maximum and minimum ratings allowed by
the controls.]
2.2
FUEL BURNING EQUIPMENT
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NOTE: Include all the required data for proper
design of the boiler. Delete all references to
fuels which will not be used. When firing fuel oil,
SECTION 15569A
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