Abstract
A mathematical model of an electric drive of a centrifugal borehole pump is proposed for evaluating its energy consumption in operating conditions. The model is based on the use of minimum set of technical parameters of the pump, presented in the public data of the manufacturer. The correctness of the calculated formulas is confirmed by experimental data provided in the program for equipment search and selection from Grundfos Product Center. Based on the created model, a comparative analysis of the energy efficiency of products from various manufacturers was made. It is proved that when choosing a centrifugal borehole pump of the local water supply system, it is necessary to pay attention to the energy efficiency indicators of electric drive in order to make a final decision.
Highlights
The use of groundwater sources on the basis of wells is currently a common technical solution when designing industrial and individual water supply systems. In this case water supply system is based on the application of a borehole pump with an electric drive and an automation unit which controls the object with specified quality indicators [1,2,3]
This article proposes a mathematical model of an electric centrifugal borehole pump for calculating its energy efficiency, based on the use of minimum set of parameters presented in the manufacturer’s public data
Since the electric power consumed by the pump electric drive is determined by its payload, in this particular case, it can be calculated based on the hydraulic power Pg at the output of the pump unit and its coefficient of efficiency (COE) η, measured in %, is:
Summary
The use of groundwater sources on the basis of wells is currently a common technical solution when designing industrial and individual water supply systems In this case water supply system is based on the application of a borehole pump with an electric drive and an automation unit which controls the object with specified quality indicators [1,2,3]. To equip the water wells, the manufacturers offer a whole range of electric centrifugal pumps with a wide range of prices and technical characteristics. The Russian manufacturers and firms from neighboring countries, for example, Unipump, Jeelex (Russia), Belamos (Belarus), Promelectro (Ukraine), as a rule, offer lower-cost solutions In this case, technical documentation presented in free Internet data, does not contain all the necessary information to assess the economic and energy efficiency of the project. This article proposes a mathematical model of an electric centrifugal borehole pump for calculating its energy efficiency, based on the use of minimum set of parameters presented in the manufacturer’s public data
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