By em. Dr.-Ing Bernd Stoffel
Assessing the strength potency of Pumps and Pump Units, constructed in cooperation with Europump, is the 1st booklet on hand offering the heritage, method, and evaluation instruments for realizing and calculating power potency for pumps and prolonged items (pumps+motors+drives). Responding to new ecu requisites for pump potency, and US DOE exploratory paintings in environment pump power potency guidance, this e-book offers clarification, derivation, and representation of PA and EPA equipment for assessing strength potency. It surveys laws with regards to pump strength efficiencies, offers history on pump and motor efficiencies, and describes the concept that of strength potency Index (EEI) for circulators and unmarried and multi-pump systems.
- The first booklet to hide Europump- subsidized examine on power potency in pumps, together with insurance of recent european directions applied in January 2015
- Discusses Product strategy (PA) and prolonged Product technique (EPA) to assessing strength efficiency
- Derives and explains the minimal potency Index (MEI)
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Extra info for Assessing the Energy Efficiency of Pumps and Pump Units: Background and Methodology
Furthermore, in Ref.  a detailed analysis is carried out for pumping systems with a function Hdemand 5 f(Qdemand) according to Eq. 2. 1, 11, and 110 kW) and various numbers of annual pump operating hours. As a result, for an exemplary annual operating time of 4000 h and for the whole investigated range of motor sizes, the savings by the use of a speed variation for flow adjustment are about 36%. 8 TWh/year at the usage estimated for 2020. In the preparatory study  that concerns circulators used in central heating systems, three different improved technologies are identified: ● ● ● Improved (standard) circulator Variable speed (AC induction motor) Variable speed (permanent magnet motor).
21], main changes in the draft of the revised version IEC 60034-30-1 (March 2014) compared to the version of 2008 are as follows: All technical constructions of electric motors are covered as long as they are rated for direct on-line operation. Thereby, for example, line-start permanent magnet motors are included. 12 # PN # 1000 kW and with up to eight poles and are rated for certain operating conditions defined in the standard. Explicitly excluded from the draft standard (besides others) are: ● ● ● motors completely integrated into a machine (for example pump, fan, and compressor) that cannot be practically tested separately from the machine submersible motors specifically designed to operate wholly immersed in a liquid motors with integrated frequency-converters (compact drives) when the motor cannot be tested separately from the converter.
Because of the inclusion of electric components (motor or PDS) in the treatment of pump units as extended products, from the beginning of the work on this item experts from the side of motor, converter, and PDS manufacturers became regular members of the expert subgroups. Overview on Europump Approaches Chapter | 3 43 Vice versa, Europump has been involved in the work done by the responsible committee of CENELEC on the elaboration of the European standard . This involvement has been by direct participation of representatives of the JWG, by a permanent exchange of information between both groups, and by delivering contributions in respect to pump units serving as an application example.