A submarine is powered by a nuclear reactor that consists of the reactor coolant, steam generation and other support systems that supply steam to the engine room. The pressurized water reactor (PWR) uses 20-45% enriched uranium-235 fuel to produce 165 MW of power, driving two 26 MW steam turbines that generate electricity and drive the propeller shaft The submarine has a displacement of 19800 tons submerged, crew of 105, length of 185 m and width of 12 m. Calculate the speed of the submarine when surfaced and submerged in kn (knots) or km/h. a) Use the PWR data to determine amount of power generated & use shaft work correlation to calculate the submarine propulsion when surfaced & submerged b) The speed of the submarine must be realistic as the fastest submarine speed recorded is 32 kn. Show all necessary calculations c) Specify no of screws/blades from your calculation

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water

the answer to this is proletariats.

hope this : )