A geothermal site contains geothermal water available at wellhead at a rate of 100 lbm/s. The geothermal water is at 300°F with a vapor fraction of 35 percent. Determine the maximum thermal efficiency and the maximum amount of power that can be produced from this site. Take the dead state temperature to be 80°F.
THE MAXIMUM THERMAL EFFICIENCY THAT CAN BE ATTAINED IS THE CARNOT EFFICIENCY
AND CARNOT EFFICIENCY DOES NOT DEPEND ON THE MEDIUM OF WORKING FLUID
IT DEPENDS ONLY UPON THE SOURCE( i.e highest temp in cycle) AND
SINK TEMPERATURE (i.e lowest tem in cycle)
A geothermal site contains geothermal water available at wellhead at a rate of 100 lbm/s. The...
F uture is 20°c determine the thermal efficiency of this power plant. 7-69 A geothermal site contains geothermal water available at wellhead at a rate of geothermal water is at 300°F with a vapor fraction of 35 percent. Determine the man efficiency and the maximum amount of power that can be produced from this site. To temperature to be 80°F. hamber at a temperature of 210°C as a cst at a rate of 100 lbm/s. The ne the maximum thermal...
CHAPTER 10 10-136 A 10-MW geothermal power plant is being consid- ered at a site where geothermal water at 230°C is available. Geothermal water is to be flashed into a chamber to a lower pressure where part of the water evaporates. The liquid is returned to the ground while the vapor is used to drive the steam turbine. The pressures at the turbine inlet and the tur- bine exit are to remain above 200 kPa and 8 kPa, respec- tively....
Problem 5(25 points) A rigid tank initially contains a partition that separates water at two different states. One side of the partition initially contains 4.5 lbm of steam at 150 psia and 600°F. The other side of the partition contains 7 lbm of saturated liquid 25 percent. The pressure at the final state is 50 psia. -vapor mixture at 300°F with a vapor mass fraction of partition is removed, and mixing occurs until equilibrium is established. The a) b) Determine...
You have a geothermal source of energy where you can access 100 L/s of hot water at 90oC. If you operate a heat engine that operates at 70% of the maximum theoretical efficiency of a heat engine, how much energy could be produced in 1 year? Assume that the heat engine can use the nearby ocean (8 oC) as its cold source (4 marks)?
Ctri Alt Part B (80 points) A nuclear reactor power plant utilizing water as the working fluid is to be analyzed in this problem. The reactor vessel (like a boiler) receives water from a pump and with heat addition produces water at 1500 lbf/in.2 and 500 F. The high-temperature compressed liquid from the reactor is throttled (in a valve) into a flash evaporator separating the fluid into vapor (saturated) and liquid at 300 lbf/in.2. The fraction of the water that...
you can assume all data
Nr 7- FINAL TEST 31 may 2019 1. Enhanced geothermal system. Please calculate amount of water steam at pressure Sbar(a), if saturated water 95 ton per hour throttled from 20 bar to 5 bar(a). 2. District heating boiler house with power output 10 MW consuming wood chips with moisture 40% decide to install flue gas condenser. If flue gas temperature will be 40 C please advice how big will be boiler house power after condenser...
1. A combined gas-steam power cycle uses a single gas turbine
cycle for the air cycle and a simple Rankine cycle for the water
vapor cycle. Atmospheric air enters the compressor at a rate of
88.2 lbm / s, at 14.7 psia and 59 ° F, and the maximum gas cycle
temperature is 1,742 ° F. The pressure ratio in the compressor is
7. The isentropic efficiency of both the compressor and the turbine
is 80%. Gas exits the heat...
Cooling water available at 680F is flowing through 1 in diameter tube at a rate of 62000 lb/hr to cool 7000 lb/hr of a lube oil from 200 to 1000F. The specific heat of the lube is 0.62 Btu/lbm oF and viscosity is 5 cp, thermal conductivity is 0.067 Btu/ft-hr °F. The overall heat transfer coefficient is 35 Btu/ft? hr of. It is considered for a single pass exchanger with 44 tubes are requires. a. Draw a schematic diagram of...
(20%) Q2. A piston-cylinder assembly initially has 100 kPa pressure and 2 liters of air at 25°C. The air is then compressed to 600 kPa pressure and 150°C temperature. Useful work input for compression is 1.2 kJ. Assuming that the ambient pressure and temperature are 100 kPa and 25°C respectively, calculate a) the exergy of the air in the first and last states, b) the minimum work required for the compression process, c) the second law efficiency of the state...
Problem 3.052 A piston–cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 450°F. The water undergoes two processes in series: a constant-pressure process followed by a constant volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid–vapor mixture with a quality of 40%. Neglect kinetic and potential energy effects. Determine the work and heat transfer for each process, all in Btu.