Abstract
A double suction centrifugal type of pump was converted into a hydraulic turbine (PAT-Pump Acting as Turbine). The casing was maintained and the pump impeller was replaced by a hydraulic runner. The hydraulic runner was designed using the Solid Works software, and was fabricated in Cagayan de Oro City. It was made of stainless steel with a diameter of 0.662 meter. It had 12 blades as compared to the 5 blades of the original pump impeller. It was assembled inside the original pump casing and was installed along the existing 0.9 m diameter water pipeline of the Rio Verde Water Consortium Inc. The lowest recorded PAT efficiency was 29% generating electrical power of 5.5 KW, effective head of 7 m. and flow rate of 1311 cu.m. per hr. The electric generator used was an electric motor running in reverse with an efficiency of around 85%. The highest recorded PAT efficiency was 69% generating electrical power of 16 KW, effective head of 7m. and flow rate of 1439 cu.m. per hr. The PAT that was designed using Solid Works software was fabricated locally in Cagayan de Oro City and installed along an existing water supply line in operation that clearly demonstrated the viability of converting double suction pump into PAT.
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