120, Ch3, Oil Burners Summary Exam Questions & Answers 100% Accurate1

3 systems of an oil burner - ANSWER-Every oil burner must have an air delivery system, a fuel delivery system, and an ignition system. How are oil burners classified? - ANSWER-Classified by the method used to prepare the fuel for combustion. Which type of oil burner dominates the residential market? - ANSWER-high-pressure gun-type oil burners. Advances in recent years have centered around what type of oil burner? - ANSWER-Flame retention head oil burners. How does an oil burner extract heat from fuel oil? - ANSWER-Convert liquid fuel oil into vapor, Mix the vapor with air, Ignite the air/oil mixture, Project flame heat energy into the boiler or furnace, Three systems built into every oil burner - ANSWER-Oil delivery system, Air delivery system, ignition system. Why are high-pressure gun-type oil burners popular? - ANSWER-Regardless of manufacture, they all operate the same way, They have only few specialized parts, and most parts are available, Equipment operates at a high level of efficiency. What is the purpose of the flame retention head? - ANSWER-To create turbulence and low pressure directly in front of the nozzle to better mix the air and oil and to accomplish complete combustion. What is the major disadvantage of the FIXED flame retention head? - ANSWER-Each retention head size will only fit a small range of nozzles, so changing a nozzle may likely require changing the retention head as well. How does the retention head keep the flame close to the end of the burner? - ANSWER-An eddy current creates a lower air pressure in front of the nozzle. Why are forced draft oil burners necessary? - ANSWER-Compact designs of high efficiency boilers result in restrictive flew gas passages that prevent hot gasses from completely exiting the fire box. Which in turn prevents more fresh air in for further continued combustion. Name at least two popular manufacturers of oil burners for the residetial market. - ANSWER-Riello Beckett Carlin