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How does the energy use for the typical family vehicle compare with that for the typical hot water heater? What are the Driving Forces For Fuel Cell Development? Infrastructure Difficulty in siting new plants Cost and efficiency losses (5-8%) in transmission Power quality and dependability issues Higher Efficiency Efficiency is reduced by fuel processing Fuel is relatively inexpensive and plentiful (now) Lower emissions What is the cash value of reduced pollutants?
How do you determine the velocity of molten metal flowing through the base of the downsprue?
Electricity might be used to run the fan to draw air through the system, and also to run a chiller - What is a typical COP for a commercial chiller?
A launch approaches a wharf at a speed of 10.5 knots(=5.4m/s).The engine are put in the reverse when the launch is 10 m from the wharf, the retardation being 1.25m/s squared. will the launch come to rest before hitting the wharf.. If not, with wha..
If the efficiency of the turbine in converting the mechanical energy given up by the fluid to the turbine shaft is 89% (nt = 0.89), calculate the friction loss in the turbine in J/kg.
Investigating A Dynamic Movement in Polar Coordinates
In a refrigerator 1 kW is removed from the -10 degree C cold space and 1.3 kW is moved into the 30 degree C warm space. Find the exergy fluxes including direction associated with the two heat transfers.
Calculate the head provided by the pump and Calculate the brake power required if the pump efficiency is 75% (kW).
A reversible heat engine operates between 875 K and 310 K and drives a reversible refrigerator operating between 310 K and 225 K. the engine receives 2000 kJ of heat and the net work output from the arrangement equals 350 kJ. make calculations for..
Water flows though a 20mm diameter pipe at 3L/min and static pressure of 100mmHG. What is the wall stress of the pipe. The pipe is 1.5mm thick.
Find the approximate location of the laminar turbulent transition - what is the net heat removed by the air around the rod?
The kite cable makes an angle of 25 degrees with the horizontal. The velocity of the wind is 30 miles/hour. Neglect ship wave drag.
what is the specific volume, internal energy (kj/kg) and enthalpy (kj/kg) for water at 1.8 mpa and 120 Degrees C? Locate the state on p-v diagram and document assumptions.
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