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Possibilities and limits of a ground cooling system.

[In German. / En allemand.]

Author(s) : OLESEN B. W.

Summary

In rooms where the occupants are mainly sitting or standing, the ground temperature should not be under 19 deg C for comfort criteria. The surface coefficient of heat transfer between the cooled ground and the room is about 7 watts/m2 K, for a radiant heat transfer of about 5 watts/m2 K. If the upper comfort limit for the experienced temperature is in summer 26 deg C, the maximum cooling capacity of a ground system is from 45 to 50 watts/m2. Nevertheless, the cooling capacity also depends on the construction of the ground, the distance between the tubes, the velocity of flow of water together with the covering of the ground. The paper also deals with these parameters. The risk of a freezed water formation on the ground could also limit the ground temperature for the ground cooling.

Details

  • Original title: [In German. / En allemand.]
  • Record ID : 1996-3627
  • Languages: German
  • Source: DKV-Tagungsbericht 1995, Ulm.
  • Publication date: 1995/11/22
  • Document available for consultation in the library of the IIR headquarters only.

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