Studying and selecting the blades number of the centrifugal pump with low head and the wind engine for a system of pump using wind turbine to produce salt for coastal areas

Abstract

    This paper focuses on analyzing the effects of the number of blades of pump and wind engine on the hydraulic characteristics of a centrifugal pump using engine wind (LTM 15 – 1,2kW), which is used for pumping the seawater to produce salt. This is a new model that was installed and applied in Hon Khoi (Khanh Hoa). Five options of the number of pump blades including 2,3,4,5 and 6 and two options of the number of wind turbine blades, 4 and 6 were investigated. The results show that the number of pump and wind turbine blades are 5 and 6 respectively for the maximum efficiency and this system ensures the ability to provide seawater for the salt field with area F=(1÷2)ha. Then, the results are verified experimentally. The pump–wind turbine system has parameters: head H=(1,1 ÷1,75)m, rate Q =(15÷42)m3 /h, efficiency ηb =(27÷60)%, wind speed V = (3 ÷ 7) m/s.