Abstract
Water pressure problems at home can be quite frustrating in daily life which is comes in different ways of complication. It may take forever for the faucets to fill a bathtub, or a slow spray shower head and longer time taken for the washing machine to run a cycle. The problem can be fixed by installing a pressure booster pump. This research is embarked to study on a centrifugal pump performance with a view to analyse pressure built-up and flowrate in pipe at fixed speed. A simple and inexpensive test rig is developed to resemble water distribution for domestic use; i.e. house application. The method is then experimentally validated to measured and analysed the pump performance such as water pressure, water flowrate, power of pump and pump speed. Since the centrifugal pump are added, the pump is able to boost the water flowrate. However, since the centrifugal pump work at constant speed, the water pressure in pipe is high when the water demand is low. The maximum pressure inside the pipe was 28.24 psi which quite high and exceed the piping standards. Power consumption also remained constant approximately 0.500 kWh when water demand was low which led to energy wastage.
Highlights
Water is plentifully available natural resource on earth and can be renewable. 70% of the Earth’s surface are covers with water but only portable for 3% of the water
The data results obtained from the experimental rig testing can be seen in Table 1 which displayed the value of water pressure and water flowrate based on the quantity of pipe that open synchronously
Pressure Half open valve Pressure Full open valve Flowrate Half open valve Flowrate Full open valve. This experiment was done to analyse the use of centrifugal pump which is constant speed pump for domestic application
Summary
Water is plentifully available natural resource on earth and can be renewable. 70% of the Earth’s surface are covers with water but only portable for 3% of the water. A centrifugal pump transmit energy to the liquid which means a centrifugal force that produced by the rotating impeller [2]. It is increase the pressure by converting mechanical energy from the motor to the water through the rotating impeller. The differential pressure or head created by the pump is used to transmit energy to the water, and overcome the frictional losses in the piping system. The H-Q curves shape have a direct effect on the stability operation of centrifugal pump and flow regulation range. This pump need a variable value of torque based on speed. At a constant speed operation, it is mandatory to use throttle valves to regulate either the pressure or flow but it was old method and used a lot of energy which is lead to energy crisis [11,12]
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