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A major barrier to wider deployment of solar power systems by homeowners and small businesses is the initial cost to purchase and install rooftop components. Today some U.S. municipalities and utilities are developing plans to assist property owners to acquire such components through loans and leasing arrangements. Investigate and critically evaluate these and other options for fostering deployment of solar power systems discovered through design-group brainstorming and use of the Internet. Report your findings in a poster presentation.
estimate the diameter of an aluminum atom given that the density is 2.7 gramscubic centimeter and the atomic mass is
calculate the change in specific internal energy and enthalpy of air for a process starting at 250 k and ending at 500
a pitot-static tube measures the stagnation and static pressure of air at 8.5 and 1.5 of h2o respectively. what is the
a piston-cylinder assembly contains a 2 phase liquid-vapor mixture of water initially with a pressure of 500 kpa and a
Why does the definition of NPSH include the dynamic head of the fluid? Isn't cavitation based only on the difference between the static head and the local vapor pressure?
a steel shaft 120 mm in diameter is supported in flexible bearings at its ends. two pulleys each 500 mm in diameter are
Consider a slab of solid material of area A between two large parallel plates a distance Y apart. Give the initial condition and the progression of events that proceeds with time as the lower plate is suddenly brought to a slightly higher temperature..
a de-superheater works by injecting liquid water at 20 degrees c into a 10 kgs stream of superheated water vapor at 300
Find denisty altitude
Air (assumed to be an ideal gas) is contained in a piston-cylinder assembly at an initial state of 1 bar with a volume of 1 m3. The mass of air contained in the cylinder is 1 kg. During any expansion or compression of the air, the pressure remains co..
A cylinder with an area ratio of 0.2 and a bore diameter of 7.5 cm steadily extends a 13.3 kN load. If the cap-side pressure is 4 MPa and the rod-side pressure is 250 kPa, what is the force ecienccy of the actuator?
in an ammonia refrigeration plant 2 kgmin of ammonia enters the compressor at 1.902 bar and 0.96 dry and is compressed
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