High Water Tank Research Articles

Development of PLC-SCADA based control strategy for water storage in a tank for a semi-automated plant

The present work represents the use of PLCs (Programmable logic controller) software and SCADA (Supervisory Control and Data Acquisition) for studying the water level and control operation of a tank for a semi-automated plant. Sensors play an important role in identifying the water level position in the tank. The entire process can be observed and controlled in real time with a SCADA system, and the pump will be started automatically after getting the instruction from the sensors in case of low water level. All four real time novel automatic control scenarios which include the measurement of low and high water tank levels, starting of the pump, tank water level filling and stopping of the pump at desired water level, have been applied through RSLOGIX 5000 PLC ladder programming and the process is visualized through SCADA monitor display. Such automation technology is highly reliable, efficient and helps to optimize the operation cost of any plant.

Mini Hydel Power Generation From Over Head Tanks Using Pelton Turbine

The electricity demand is increasing day by day all over the world. A lot of efforts are made to make the buildings productive and self sustainable. Saving a small amount of electricity can contribute huge to full fill the demand of electricity. Due to this fact it is proposed to get energy from overhead water tanks. Following this approach a 20 m high water tank is considered. Water in the pipeline rotates a mini-hydro turbine with appropriate rotation. The feasibility to generate electricity from the potential energy of water of the pipeline has been founded. The purpose of this system is to find the cost effective and environmental friendly solution of the power generation using low-cost mini-hydro turbine having negligible environmental effects. The experimental system of this idea consists of a mini-hydro turbine having diameter of 0.21 m which is coupled with a dc generator via chain-gear mechanism to obtain desired rotation. Sensor box is designed to monitor the technical parameters. Led bulbs are introduced in the system to indicate and validate the output and results. The calculations and theoretical concepts are presented using basic theory and equations of fluid mechanics and turbo-mechanics. The outputs are validated using numerical and experimental results.

Series-Parallel Combined Constant Pressure Water Supply Pipeline Design of High-Rise Building

The existing parallel type pressurized water supply pipeline of high-rise buildings has been improved to build energy-saving high-rise building water supply systems. Series-parallel combined constant pressure water supply pipeline is designed. Antipollution high water tank is reasonably installed above the middle area of the building to supply water for the middle area high water tank and supply pressurized water by water pumps for high-rise district. And PLC control system is designed to control the work efficiency of the water pumps according to the sensor feedback information. Verified by calculation and simulation, series-parallel combined constant pressure water supply pipeline is better than parallel water supply pipes in saving the energy which is about the middle-Hybrid phase consumption of the latter. PLC control is simulated and the results show that PLC can effectively control the water supply system to ensure stable water pressure so as to save energy.

사각형 중간맨홀에서의 유사 퇴적 분석 및 산정식 제안

Sediment load deposited in sewers and manholes reduces not only the capacity of pipes but also the efficiency of the whole sewer system. This causes the inundations of the low places and overflows at manholes, Moreover, sulfides and bad odor can occur due to deposited sediment with organic loads in manholes. Movements of sediment load in manholes are complicated depending on manhole size, location, inside structure, sediment load type, and time. Therefore, it is necessary to understand the movements of sediment load in manholes by experiments. In this study, experiments were implemented by a square manhole with straight path to measure deposited sedimentation quantity. The experimental apparatus was consisted of a high water tank, an upstream tank, test pipes, a sediment supplier, a manhole, and a downstream tank to measure the experimental discharge. The quantity of deposited sediment load was measured by different conditions, such as the inflow condition of sediment(continuous and certain period), the amount of inflow sediment, discharge, and the type of sediment. Jumoonjin sand(S

Research on pressure optimization effect of high level water tank by drinking water network hydraulic model

In order to solve the problem of inadequate water pressure in the southern and southeast area of City K, high level water tank is to be built in different locations of network system to improve this situation. When it is low peak period at night, the excess produced water will be transferred into the high level water tank. Otherwise, during the peak period of the daytime, network will be supplied by water treatment plants and high water tank together so as to balance the network pressure. This paper analyses the different high water tank building plans through hydraulic model simulating, thus, providing an economical and reasonable suggestion to the network's modification.