The technology for power generation using geothermal energy

The technology for power generation using geothermal energy is well established and numerous geothermal power plants throughout the world are currently generating electricity economically. Binary geothermal plants utilize a volatile_secondary_fluid such as.isobutane, n-pentane, and R-114 in a closed loop. Consider a binary geothermal plant with R-114 as the working fluid that Is flowing at a rate of 600Kg/s. The R-114 la vaporized in a boiler at 115 degree C by geothermal fluid that enters at 165 degree C. and Is condensed at 30 degree C outside the tubes by cooling water that enters the tubes at 1B degree C. The average heat flux based on the outer surface of the tubes can be taken to be 4, 600W/m^2. For this system specify: The length of the tubes The diameter of the tubes. The number of tubes The arrangement of the tubes, and The layout of the plant including all components and piping. In addition, address the following questions: a. What is the fraction of the energy \"wasted\" for your system? Justify your answer What is the entropy generation for your system ? How would you go about meeting pertinent environmental regulations? State clearly and justify any assumptions you may choose to make. Present your work in a neat and well-organized fashion.

Solution

Length of the tube = 67meter

Diameter of the tubes = 36 mm

Number of tubes= 9

Arrangement vertical