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STOCKHOLM: THE CITY OF LARGE HEAT PUMPS.

Author(s) : PERSSON T., JANDER L.

Type of article: Article

Summary

TWO SYSTEMS ARE DESCRIBED, ONE OF 100 MW THE OTHER 120 MW WHICH CAN PRODUCE 2.8 GWH OF HEAT PER DAY. TREATED SEWAGE IS STORED FOR 24 HOURS IN AN UNDERGROUND CHAMBER TO ACT AS A BUFFER AND IS FED TO THE HEAT PUMP AT AN INLET TEMPERATURE RANGING FROM 283 TO 291 K (10 TO 18 DEG C). IN COLD WEATHER THE HEAT PUMP IS SUPPLEMENTED BY OIL FIRING BUT OVER-ALL COSTS HAVE BEEN REDUCED BY 50%. OTHER SMALLER PLANTS ARE ALSO DESCRIBED USING LAKE WATER WITH A MINIMUM WATER TEMPERATURE OF 274.5 K (1.5 DEG C). A NOVEL APPLICATION IS THE USE OF A BARGE SUPPLYING WATER AT 358 K (85 DEG C) WHEN FED WITH WATER VIA OVERHEAD PIPES WHICH IS PREHEATED IN OTHER PLANTS TO 333 TO 353 K (60 TO 80 DEG C). G.R.S.

Details

  • Original title: STOCKHOLM: THE CITY OF LARGE HEAT PUMPS.
  • Record ID : 1988-0785
  • Languages: English
  • Source: H&V Eng. - vol. 59 - n. 679
  • Publication date: 1986/11
  • Document available for consultation in the library of the IIR headquarters only.

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