T/JAMIA 003-2024 The evaluation of economic operation of centrifugal pump unit

Scope

Main Technical Content: 4 Basic Requirements The economic operation of centrifugal pump units shall comply with the provisions of GB/T 13466. The selection of centrifugal pump equipment should prioritize motors and pumps that meet the energy efficiency standards specified in related mandatory efficiency documents such as GB 18613 and GB 19762, and products that have been phased out by national regulations should not be selected. The selection of equipment should adopt the method of life cycle cost analysis to choose highly economical devices. For motors with an annual running time of more than 3,000 hours and a load rate of over 60%, their energy efficiency grade should meet the requirements of Class 2 energy efficiency specified in the relevant mandatory efficiency documents. The selection of centrifugal pump units should meet the following requirements: a) It should meet the system's operating head and flow requirements; b) The selection of pumps should comply with the provisions of relevant documents such as GB/T 9481 and GB/T 13007; c) The design operating point should be within the economic operating range specified by the pump manufacturer. Under various production process conditions, pumps should be selected based on the system's load characteristics. When selecting multiple pumps for combined operation, the technical requirements for series and parallel operation should be met. When using multiple pumps for combined operation, high-efficiency pumps should be used to bear the basic load to minimize the electrical consumption per unit of liquid transported. For parallel operation, pumps with equal head characteristics should be used; For series operation, pumps with equal flow characteristics should be used; When using speed control devices for regulation, the pump series/parallel operation rules should be followed, and it is recommended to use frequency-controlled pumps for efficient energy-saving series/parallel operation. Accor

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