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This study guide provides a series of questions and answers related to oil burners, covering topics such as atomization, combustion efficiency, and safety devices. It is a valuable resource for students and professionals seeking to understand the fundamentals of oil burner operation and maintenance.
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Modern oil burners are referred to as high-pressure burners, as the oil is delivered through the burner at a pressure of about _____ psi. Correct answer: 100 psi The process of breaking up a liquid into fine droplets is called _____. Correct answer: atomization _____ is the amount of carbon left in a sample of oil after it is vaporized, changed from a liquid to a vapor, by blending it. Correct answer: Carbon residue The portion of a nozzle assembly that produces rotation of the oil spray is called the _____. Correct answer: swirl chamber Oil lines can be constructed of _____, _____ or _____ pipe connected with malleable fittings.
Correct answer: wrought iron, steel or brass If a technician inspects the interior of a combustion chamber and finds large quantities of unburned oil, he would correctly conclude that _____. Correct answer: incomplete combustion is taking place. The CAD cell is a safety device that uses which of the following to prove ignition? Correct answer: unknown A condensing oil furnace operates at a higher efficiency because part of the heat output is _____. Correct answer: latent heat To make combustion efficiency test, a hole must be made _____. Correct answer: unknown What would happen if the narrow spray angle nozzle were used in a round combustion chamber? Correct answer: unknown When the oil supply is above the oil burner pump, the pump and supply would normally be a _____. Correct answer: single stage pump
Correct answer: is a safety switch that shuts down the boiler if it does not sense heat in the flue box. Creates turbulence in the air-oil mixture to increase efficiency. Correct answer: flame retention ring insulated with ceramic to prevent electrical ground. Correct answer: electrodes Devices that will shut burner down in case the burner doesn't fire Correct answer: stack switch Meters flow of fuel oil into the chamber Correct answer: nozzle Generates approximately 10,000 volts needed for spark. Correct answer: ignition transformer