2Course introduction Course Type: practice course Time : 7 hours Students: the third grade
3The Main Content The Main Content Main Content Time 1 Basic principle and construction1 hour2Operations introduction1.5 hours3Operations practice4 hours4Sum up the main points of the lessonhalf an hour
4Basic principle and construction Question: Please list the use of marine boilers[Main Boiler]：producing Superheated Steam(过热蒸汽) to drive main engine.[Auxiliary/Donkey Boiler] ：producing Superheated Steam(过热蒸汽) and Saturated Steam (饱和蒸汽)to drive auxiliary machinery,to heat fuel oil,lube oil,flesh water, or for air conditioner and daily use.
51.According to the heat source 一，Basic Types1.According to the heat source[Exhaust Boiler ] :from main engine exhaust gas[oil-burning Boiler]:from combustionQuestion: As we know,there is an exhaust boiler on board.why do we still need an oil-burning bioler?
62.According to the structure 一，Basic Types2.According to the structure[Smoke-tube Boiler][Water-tube Boiler][Mixed-type Boiler]
73. According to the water circulation 一，Basic Types3. According to the water circulation[Natural Circulating Boiler] ：The power of water cycle is from density difference.[Forced Circulating Boiler] ：The water cycle is due to pumps.
8the natural water cycle principle Steam DrumDowncomerRiserWater DrumQuestion:which level is higher,the level in water gauage or the steam drum level?