Feeding Large Heat Pumps from Sewage Water Treatment Plants

  • B. Stjernström
Conference paper

Summary

A number of large heat pump stations for district heating have recently been built in Sweden. Treated sewage water has been used as major low temperature energy source. Lake and sea water have also been used sometimes as additional energy to a sewage source. In the largest of them, the Hammarby 175 MW plant, water is transported from the sewage plant by gravity in a 2.7 km long rock tunnel and pumped up to and through the heat pump evaporators in two steps by submersible pumps. When returning to the recipient the head is used to recover energy with a 315 kW submersible hydroturbine generator. Multiple submersible pump concepts have been selected in order to cut total station costs and secure high availability. Basic pump station layouts are presented.

Keywords

Zinc Vortex Foam Epoxy Sewage 

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References

  1. ABB STAL, 1985, 120 MW Heat Pump Station at Solna/SundbybergGoogle Scholar
  2. Bixio Vincenzo, 1985, New Concepts in the Design of Propeller Pumping Stations, Cleup PadovaGoogle Scholar
  3. Flygt AB, 1990, Pumping Stations With Large Submersible Centrifugal PumpsGoogle Scholar
  4. Flygt AB, 1990, Pumping Stations With Submersible Propeller and Large Low Lift PumpsGoogle Scholar
  5. Stjernström-Rune, 1988, Hammarbyverket, värmepumpar, spillvattenpumpar och vattenturbin, KTH DT 1b, VT-88Google Scholar
  6. Stockholm Energi, 1987, The Hammarby plantGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • B. Stjernström
    • 1
  1. 1.Flygt ABSweden

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