CONTROL SIMULATION AND EXPERIMENTAL STUDY ON GOLDFISH POND USING PLATE HEAT EXCHANGER WITH DISTURBANCE OF CHANGES IN AMBIENCE AND HOT WATER TEMPERATURE

• Main Author: Vincent
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69709
• Institution: Institut Teknologi Bandung

The use of geothermal energy is very widespread in the world, namely direct and indirect use of geothermal energy. In the direct use of geothermal, 34% of geothermal energy is used in the aquaculture sector (fishery cultivation). In the cultivation process, there are many disturbances that occur in fish ponds such as the temperature of the hot spring and the ambient air temperature which can change so that a control system is needed that can maintain it at the optimum temperature. Fish are aquatic creatures that can reproduce by laying eggs. Each fish has an optimum temperature so that seeding in fish can run faster and extreme temperature that can be tolerated by fish. Goldfish have an optimum temperature of 22oC-32oC and an extreme temperature of 4oC-37oC. In order for the pool temperature to be constant at the optimum temperature, a control system is needed in such a way as to maintain the pool water temperature at the optimum temperature (setpoint). The control system used in this final project is PID control by utilizing a plate heat exchanger as a tool between cold water and hot water The result of the experiment is that the control system can maintain the pool water temperature at the setpoint temperature of 26oC in three types of variations, namely without disturbance, disturbance from changes in ambient temperature, and disturbance from changes in hot water temperature. In the disturbance of changes in hot water temperature, the disturbance causes the pool water temperature to change from 0.02oC to 0.05oC so that it can be ignored. When the ambient temperature is disturbed, the air temperature reaches 19oC and the control system can restore the pool water temperature to the setpoint temperature.