Promising method of power generation involves collecting

Assignment Help Mechanical Engineering

Reference no: EM13710320

A promising method of power generation involves collecting and storing solar energy in large artificial lakes a few meters deep, called solar ponds. Solar energy is absorbed by all parts of the pond, and the water temperature rises everywhere. The top part of the pond, however, loses to the atmosphere much of the heat it absorbs, and as a result, its temperature drops. This cool water serves as insulation for the bottom part of the pond and helps trap the energy there. Usually, salt is planted at the bottom of the pond to prevent the rise of this hot water to the top. A power plant that uses an organic fluid, such as alcohol, as the working fluid can be operated between the top and the bottom portions of the pond. If the water temperature is 35°C near the surface and 80°C near the bottom of the pond, determine the maximum thermal efficiency that this power plant can have. Is it realistic to use 35°C and 80°C for temperatures in the calculations? Explain

Reference no: EM13710320

Questions Cloud

Combined cycle power plant burns natural gas : A combined cycle power plant burns natural gas and produces 600MW and has an efficiency of 48%. Find the whole sale cost of natural gas and determine the cost of the fuel burned per second for the plant to produce it rated output of 600MW

Steam heated at constant pressure in a steam generator : Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam exiting the first-stage turbine at 6 MPa is reheated at constant pressure to 500°C. Each turbine stage has an isentr..

Adiabatic heat exchanger is used to heat cold water : An adiabatic heat exchanger is used to heat cold water at 8°C entering at a rate of 3 kg/s using hot air at 150°C entering with the same mass flow rate. If the air’s exit temperature air is 30°C,

Flow of clockwise vortex of circulation gamma : Consider the flow of clockwise vortex of circulation gamma and a source of strength Q, both located at the origin. Show that the result is a spiral flow in which the velocity is everywhere inclined at the same angle to the radius vector from the orig..

Promising method of power generation involves collecting : A promising method of power generation involves collecting and storing solar energy in large artificial lakes a few meters deep, called solar ponds. Solar energy is absorbed by all parts of the pond, and the water temperature rises everywhere. The to..

Magnitudes of the normal and tangential accelerations : A particle which movies in a two-dimensional curvilinear motion has coordinates in millimetres which vary with time t in seconds according to x=5t2 +4 and y=2t3 + 6. For time t =3s, determine the radius of curvature of the particle path and the magni..

Mass flowed into the tank and what is its final temperature : An evacuated 1-ft3 tank is connected by a valve to a nitrogen supply line flowing air at 120 psi and70oF. A valve is opened allowing air to flow into the tank until the pressure reaches 90 psi. How much mass flowed into the tank and what is its final..

Constant-volume process the temperature : A piston-cylinder assembly contains 2 lb of water initially at 100 psi and 400 F. The water undergoes two processes in a series, first a constant pressure process and then a constant-volume process. At the end of teh constant-volume process the tempe..

Rigid tank contains saturated refrigerant : A 3.31 ft3 rigid tank contains saturated refrigerant-134 at 100psi. Initially, 14 percent of the volume is occupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank. He..

User Account

All Pages