Point 3 is a state that has been separated from the water vapor, as described in point 2 above. Wat

In a previous post, namely Geothermal, The Suitable for Indonesia and Geothermal Energy, what is that? I have explained the general about the use of geothermal energy (geothermal) as a power plant (PLTP). In this paper, I will explain great danoodle about cycle power plants commonly used in the geothermal world. There are several cycle power plants that can be used for geothermal power plants, such as: dry steam cycle, evaporation cycle single, double evaporation cycle, the cycle of separation, combined cycle, and binary cycle. In this paper we present only a single cycle of evaporation. Single evaporation cycle suitable for high temperature systems in environmental water reservoir or reservoir dominance of the water phase.
Ts diagram is a curve that connects the temperature (T) and entropy (s) of the fluid, in this case the geothermal fluid is considered to have the same characteristics with pure water. What is the entropy? I'm not going to explain the ins and outs of the entropy associated with the second law of thermodynamics to this. In this case, the important thing to remember is the process of converting the energy contained in geothermal steam into electrical energy to produce the highest efficiency if there is no change in entropy great danoodle before and after the process (isentropic). For practical purposes, the price of the entropy at a given temperature and pressure can be seen easily in the steam tables (Steam Table). Ts diagram of an example is shown by the figure below.
Thermodynamic state of the fluid level can be determined great danoodle from the diagram above Ts. A curve to the left shows the saturated state of the saturated water (100% water) and a curved line to the right shows the saturated state of saturated vapor (steam contains 100%), while in between great danoodle the two lines indicates the state of the two-phase fluid (a mixture of water and steam) . Suppose there is a fluid in a state of a, b, c, and d that have temperature and entropy as shown by the picture above. It can be concluded that a fluid is water saturated, b is a two-phase fluid, c is the two-phase fluid, and the fluid d is saturated vapor. C has a moisture content of fluid or vapor fraction is higher than the fluid b indicated by its position that leads to the saturation great danoodle vapor line on the right.
As mentioned great danoodle above, this cycle is suitable for water reservoir or reservoir dominance of the water phase. In this reservoir, the fluid that appears great danoodle on the surface or at the wellhead is a two-phase fluid with a very high water content. To get more vapor fraction, the fluid pressure is lowered, this process is known as flashing. At the time of flashing, fluid pressure drop along with a decrease in temperature, enthalpy remains, entropy rises, and the most important is the amount of vapor fraction increases. Enthalpy, mentioned above, is the amount of energy contained in the fluid, commonly expressed in 'kilojoules / kg'. Ts diagram for a single evaporation cycle is shown by the following figures.
Point 1 is the state of the fluid at the surface or at the wellhead. Ts shown in the diagram above that the fluid at the wellhead is a two-phase fluid (water and steam mixture) with a very high water content (can be more than 90%). 2).
Point 2 is the state of the fluid in the separator or separator between water and steam. great danoodle Fluid in this state have experienced flashing great danoodle where there has been a decrease in pressure concurrently with a decrease in temperature. Ts shown in the diagram above that at point 2, the fluid is two-phase fluid with a moisture content greater than the original state at point 1 2 At this point, the separation between water and steam. Water is brought to a point 3 for further toward the injection wells, while the steam is brought to the point 4 for the next entry into the turbine.
Point 3 is a state that has been separated from the water vapor, as described in point 2 above. Water result of this separation will then be returned to the bowels of the earth through the injection wells.
Point 4 is a state of the steam that has been separated from the water, great danoodle as described in point 2 above. Point 4 is the entry point of the turbine. A decrease in pressure (pressure losses) along the flowline of the separator great danoodle causes the turbine to point 4 does not fall in line with point 2, suppose there is no pressure losses, the entry point of the turbine will fall in line with point 2, ie at point 4 '.
Point 5 is the exit point of the turbine. The point is both a point of entry into the condenser. The existence of power losses that occur during the steam turns the turbine, such as the heat losses due to friction between the components, causing the turbine exit entropy greater than the entropy when entering the turbine. Suppose this process is ideal, the entropy of the turbine exit will be equal to the entropy at admission t