Average solar flux incident on a horizontal surface

Assignment Help Mechanical Engineering

Reference no: EM13711566

The yearly average solar flux incident on a horizontal surface in the United States is about 180 W/m2. The average total energy demand in the United States is approximately 100 quads (100 × 1018 ) per year. Assuming an average efficiency of PV cells of 14% and biomass conversion efficiency around 1%, estimate the percentage of land required to provide the energy of the country by these two renewable technologies. (The total land area of the United States is about 9.2 × 106 km2).

Reference no: EM13711566

Questions Cloud

Resolve together to determine bearing stress : If there are two forces acting perpendicular to each other at the same pin, do they resolve together to determine bearing stress?

Heat is transferred to the refrigerant such that pressure : A 4.40-ft^3 rigid tank contains saturated refrigerant-134a at 100 psia. Initially, 26 percent of the volume is occupied by liquid and the rest by vapor. A value at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank..

Burning of the fuels and an atmospheric temperature : Two different fuels are being considered for a 1 MW (net output) heat engine which can operate between the highest temperature produced during the burning of the fuels and an atmospheric temperature of 300 K. Fuel A burns at 2,500 K, delivering 50 MJ..

Calculate the work done on the object by the force : A force of F= (-2i+8j-6k)N is applied to an object that is constrained to move in the direction u=0.5571i+0.4481j-0.6992k. If the object has a total displacement of 10 meters in the direction of u, calculate the work done on the object by the force.

Average solar flux incident on a horizontal surface : The yearly average solar flux incident on a horizontal surface in the United States is about 180 W/m2. The average total energy demand in the United States is approximately 100 quads (100 × 1018 ) per year. Assuming an average efficiency of PV cells ..

How much energy do you consume to complete the task : While completing your homework, imagine the study space you are using employs a space heater with a rating of 30 kW, a refrigerator (for snacks) that is rated for 5 kW, and a light fixture with two 100 W bulbs, all operating at a constant rate for th..

Estimate the increase in the price of a barrel of oil : If there were a carbon tax of $250/ton of CO2 on fossil fuels, estimate the increase in the price of a barrel of oil. The density of oil is assumed to be 803 kg/m3. Use C8H18 for oil.

Solar energy collector produces a maximum temperature : A solar energy collector produces a maximum temperature of 100°C. The collected energy is used in a cyclic heat engine that operates in a 5°C environment. Estimate the thermal efficiency if the engine operates at 40% of Carnot efficiency. How would t..

Steady-state conditions with negligible inlet velocity : Air enters a well-insulated turbine operating at steady-state conditions with negligible inlet velocity, 4 MPa, and 100°C. The air expands to an exit pressure of 100 kPa. The exit velocity and temperature are 90 m/s and 100°C, respectively. The diame..

User Account

All Pages