Read e-book online Assessing the Energy Efficiency of Pumps and Pump Units: PDF

By em. Dr.-Ing Bernd Stoffel

Assessing the strength potency of Pumps and Pump Units, built in cooperation with Europump, is the 1st ebook on hand offering the historical past, method, and overview instruments for knowing and calculating strength potency for pumps and prolonged items (pumps+motors+drives). Responding to new ecu necessities for pump potency, and US DOE exploratory paintings in surroundings pump power potency instructions, this e-book offers clarification, derivation, and representation of PA and EPA tools for assessing strength potency. It surveys laws regarding pump power efficiencies, offers history on pump and motor efficiencies, and describes the idea that of strength potency Index (EEI) for circulators and unmarried and multi-pump systems.

  • The first e-book to hide Europump- backed study on power potency in pumps, together with assurance of latest european guidance applied in January 2015
  • Discusses Product process (PA) and prolonged Product procedure (EPA) to assessing strength efficiency
  • Derives and explains the minimal potency Index (MEI)

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Sample text

The mechanical friction losses result from friction torques Tmech,friction caused by friction in the shaft sealing(s) and in the shaft bearings. Circulators have neither a shaft sealing nor their own pump bearings and, therefore, are not affected by mechanical losses. 2) have no own bearings and, therefore, are not affected by bearing friction losses. The magnitude of the related mechanical friction losses is directly determined by the type and the design details of the 48 Assessing the Energy Efficiency of Pumps and Pump Units shaft sealing (stuffing box, mechanical seal) and of the shaft bearings (roller bearings, sliding bearings).

At the time the regulation entered into force, the corresponding European Standard prEN 16480 [18] had not been finally published. Therefore, in a Commission Communication [25], the needed information for the verification of compliance with the requirements of the regulation [24] was given. Concerning tests regarding the pump efficiency for the purpose of compliance with the requirements of the regulation [24], reference is made to the International Standard ISO 9906 [17]. It is requested that these measurements shall be done according to ISO 9906, Class 2b, with the exception that the total tolerance of pump efficiency for pumps having a mechanical power input of Pmech,N , 10 kW shall not be considered.

30] and Chapters 3 and 8). 2, the energy efficiency of pump units is relevant for the total (global or European) consumption of electric energy. Therefore, it is an ecological and political goal to reduce energy consumed by the use of pump units. In the EU, a legislative frame was established by a general directive concerning all energy using products (EuP) [11], also called the EcoDesign Directive. This directive allows the EC to develop measures to reduce the eco-impact of EuP within the EC.

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