(2.) After stabilization has occurred, set the balance weights at
any convenient value slightly less than the total weight of the
fuel and container.
(3.) Start the stopwatch when the balance weights fall and record
the total weight.
(4.) Reduce the balance weight a convenient amount and record the
amount of the weights removed.
(5.) Stop the stopwatch when the balance weights fall and record
the total weight and the elapsed time.
(6.) Repeat steps (1) thru (2) above until the timed portion of
the test exceeds the 2 hours.
(7.) From the total elapsed time and total of the weights removed
calculate the fuel consumption in terms of pounds per hour.
(8.) Using the value obtained in step (7) above, compute the rate
of fuel consumption per kilowatt hour, as follows:
Pounds per kWH
=
Fuel Consumption in Pounds per Hour
kW Load
(9.)
Repeat the test for each load condition specified.
(10.) Determine the capacity of the generator set fuel tank in
pounds of fuel.
(11.) For each specified load, compute the number of continuous
hours the generator set will operate on a full tank of fuel. The
following formula shall be used.
Operating hours
=
Fuel Tank Capacity (Pounds)
Fuel Consumption (Pounds per hour)
ALTERNATE PROCEDURE FOR WEIGHING FUEL
(1.) Supply fuel from the auxiliary fuel container, mounted on a
platform balance, or other weighing device.
(2.) After stabilization has occurred, record weight readings
every one-half hour for a period of 2 hours.
(3.) Calculate the average hourly fuel consumption rate in pounds
per hour.
(4.) Using the average hourly fuel consumption rate obtained
above, compute the rate of fuel consumption per kilowatt hour, as
follows:
Pounds per kWH
=
Fuel Consumption
kW Load
(5.)
Repeat test for each load condition specified.
(6.) Determine the capacity of the generator set fuel tank in
pounds of fuel.
SECTION 16263A
Page 88
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