Surface Machinery and Methods for Oil-Well Pumping Page: 18
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18 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
Some operators recommend preheating the fuel oil so that it will
be atomized more readily.
The system for oil delivery to the burners should be properly in-
stalled and cared for. Leaks should be: repaired at the first oppor-
tunity and oil should be kept from running on the floor by the use
of trays under pumps and strainers. The furnace should be so
constructed that the fuel is completely burned before it reaches the
The oil-firing indicator shown in Figure 2 has been developed as
a reliable guide for the fireman in determining the proper amount
of air required for the boiler furnace. It has been observed that
there is a definite relation between the flue-gas analysis and the in-
tensity of reflected light which is transmitted through the flue gas.
FIGURE 2.-Oil-firing indicator for determining the proper amount of air for combustion.
For description, see text.
If the proper flue-gas analysis and the corresponding intensity of
light reflected through it are known, the furnace efficiency can be
maintained by keeping the light intensity at this point.
The device consists of an electric light and casing, a, and a mirror
reflector and casing, b, each set directly opposite the other with a
nipple extending through the side wall of the furnace at a point far
enough from the fire box to be out of the path of the flame but in
line with the path of the flue gas leaving the furnace. The course of
the reflected light c intersects the course of the flue gas d. The light
reflected from the mirror is indicated by e. The intensity of the
reflected light is observed at the front of the boiler where regulation
of draft to the desired intensity of light gives the proper mixture of
air with the burning oil.
Many operators prefer this device to the CO, recorder or indicator,
as any change in furnace conditions shows on this indicator instantly
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George, H. C. Surface Machinery and Methods for Oil-Well Pumping, report, 1925; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc12407/m1/30/: accessed March 28, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.