Abstract
The condenser heat from the steam turbine system is discharged into the environment in a way that is likely to damage the environment. This paper simulates a system that produces aquadest with throttled 10% water of condenser output to the cooling water tank with vacuum pressure so as to produce water vapor. This water vapor is condensed in a cooling machine to produce aquadest. The cold water coming out of the cooling water tank is mixed with cooling water from the sea so the temperature is lower causing the condenser output water to be lower temperature (more environmentally friendly). This simulation varies the pressure of cooling water tanks and Pinch Points Temperature Difference (PPTD) of condenser. From the simulation it is found that the higher the pressure of the cooling water tank causes Specific Aquadest Production (SAP), and Energy Consumtion (EC) is getting smaller. The smaller PPTD leads to Specific Aquadest Production (SAP), Specific Energy Consumtion (SEC) and Energy Consumtion (EC) getting smaller. This simulation has the best result that is able to produce aquadest as much as 0.0133 [kg/s], increase the efficiency of steam power plant by 0.21%, and lower condenser water temperature by 0.9 °C.
Highlights
In the coastal areas of Indonesia, especially in big cities and in many other places around the world is a clean water crisis
2 Methods directly discharged into the sea, as well as variations in water pressure within the cooling water tank to improve the efficiency of the production of aquadest and thermodynamic efficiency [7]
Condenser pressure is selected 6.45 kPa because at this pressure has a temperature of 37.5 oC so that with point temperature difference (PPTD) point 5 oC can still be cooled by sea water with temperature of 30 oC
Summary
In the coastal areas of Indonesia, especially in big cities and in many other places around the world is a clean water crisis. The method and process in this research is a new innovation that is by utilizing the waste of warm water of condenser output of the steam power plant This waste is generally directly discharged into the sea without being used first. 2 Methods directly discharged into the sea, as well as variations in water pressure within the cooling water tank to improve the efficiency of the production of aquadest and thermodynamic efficiency [7] In this simulation, only variations on the pinch point temperature difference (PPTD) and the pressure of the cooling water tank are used. It can be seen that this tool circulates the condenser cooling water of the steam power plant so that not all water coming out of the condenser is discharged back into the sea Ṁcooling water pcondenser (pressure) ηisentropic (efficiency) ηth (efficiency of steam power plant) Tcooling water out from condenser PPTD
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