更多"Generating tubes in waste heat boil"的相关试题:
[单项选择]The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust ().
A. gas composition
B. gas temperature
C. pressure
D. timing
[单项选择]Diesel engine waste heat boiler construction is usually of the fire-tube or()
A. cyclone furnace boiler type
B. dry back boiler type
C. water-tube type
D. critical circulation boiler type
[单项选择]The purpose of designing some waste heat boilers with sinuous fire tubes, is to()
A. increase exhaust gas velocity through the boiler
B. reduce accumulations of carbon deposits on the heat transfer surfaces
C. eliminate exhaust gas pulsations and noise
D. increase the rate of heat transfer to the waterside
[单项选择]An exhaust gas bypass is installed on a waste heat boiler in order to ().
A. bypass exhaust gas at high loads to prevent excessive back pressure
B. bypass a portion of the exhaust gas at peak loads for better efficiency
C. recycle exhaust gas to the turbocharger
D. minimize moisture condensation in the boiler gas passages at low loads
[单项选择]A waste heat boiler is installed on some diesel propelled vessels to ().
A. provide steam for emergency propulsion
B. provide steam for the turbo-generator
C. heat the waste water tanks
D. steam for warming engines
[单项选择]A SECONDARY function of a waste heat boiler is to ().
A. reduce engine exhaust noise
B. reduce engine back pressure
C. increase engine cycle efficiency
D. increase turbocharger efficiency
[单项选择]The PRIMARY function of a waste heat boiler is to ()
A. reduce engine exhaust noise
B. reduce engine back pressure
C. recover heat which otherwise would be lost
D. increase turbocharger efficiency
[单项选择]What does blowing tubes accomplish?()
A. Eliminates unburned fuel oil residues from the firebox
B. Increases boiler efficiency
C. Flushes away mineral deposits inside the water tubes
D. Cleans soot deposits from the inside of the stack
[单项选择]Waste oil should()
A. be treated according to the C-Es command exactly
B. be treated according to MARPOL
C. accumulate in bilges or on tank tops in accordance with MARPOL
D. discharge to sea at the specified areas
[单项选择]The sum of the sensible heat and the latent heat of any substance is known as ().
A. total heat
B. residual heat
C. specific heat
D. superheat
[单项选择]Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using().
A. sealing clamps
B. repair tape
C. a tube patch
D. sail twine and vulcanizing kit
[单项选择]Fins are installed on the fireside of water-tubes used in waste boiler to()
A. decrease the velocity of gases flowing past the tubes
B. increase the rate of heat transfer
C. reduce accumulations carbon deposits
D. direct the flow of gases
[单项选择]A system of reservoirs and connecting tubes in a gyro compass is called a().
A. spider element
B. mercury ballistic
C. gyrotron
D. rotor
[单项选择]You intend to discharge medical or hazardous wastes ashore MARPOL annex V requires you to notify a receiving port or terminal in advance.How much advance notice require?()
A. 12 hours
B. 24 hours
C. 48 hours
D. Advance notification is not required
[单项选择]During waste clothes being charged into an incinerator, the auxiliary burner().
A. should be stopped manually
B. keeps the combustion as usual
C. would be cut off by an interlock
D. would replace the waste oil burner and keep going on
[单项选择]Solid waste generation,and electricity and water consumption are costly and have their own set of environmental().
A. inspect
B. impairs
C. impacts
D. insects
[单项选择]The solid waste was charged into the incinerator through ().
A. the solid waste dump chute
B. an access door
C. the same way for waste oil burners
D. a changing opening
[单项选择]Fueling results in the collection of waste oil in drip pans and containers. Which is an approved method of disposing of the waste oil? ()
A. Draining it overboard when the vessel gets underway
B. Placing it in proper disposal facilities
C. Adding sinking agents and discharging it into the water
D. Mixing it with dispersants before draining it overboard