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THERMAL EFFECTS OF AIR FLOWS IN BUILDING STRUCTURES.

Author(s) : KOHONEN R.

Type of article: Periodical article

Summary

DESCRIBES ANALYSES OF THE THERMAL EFFECTS OF AIR FLOWS IN BUILDING STRUCTURES. TREATS IN ADDITION LABORATORY EXPERIMENTS CONCERNING NATURAL CONVECTION IN CLOSED AND SEMI-OPEN CAVITIES FILLED WITH FIBROUS INSULATING MATERIAL. STUDIES THREE DIFFERENT AIR FLOW SYSTEMS: NATURAL/FORCED CONVECTION IN OPEN/SEMI-OPEN TWO-DIMENSIONAL INSULATION STRUCTURES, HEATING OF INFILTRATING AIR IN CRACKS AND DIFFUSIVE INFILTRATION. FINDS THAT INCREASED HEAT TRANSFER CAUSED BY NATURAL CONVECTION IS INSIGNIFICANT IN CLOSED NORMAL SIZE WALLS, BUT MAY BE AS HIGH AS 10% IF THE COLD SURFACE IS VERY PERMEABLE. HEATING OF INFILTRATION AIR IN CRACKS MAY RISE TO 80% OF THE OUTDOOR/INDOOR TEMPERATURE DIFFERENCE. CONCLUDES THAT DYNAMIC INSULATION WITH THE USE OF SOLAR ENERGY APPEARS TO BE A PROMISING WAY. (INT. BUILD. SERV. ABSTR., GB., 21, N 1, 1986, 23, 86-00235.

Details

  • Original title: THERMAL EFFECTS OF AIR FLOWS IN BUILDING STRUCTURES.
  • Record ID : 1986-2432
  • Languages: English
  • Source: Finl. TRC, Res. Note - n. 367
  • Publication date: 1985/09
  • Document available for consultation in the library of the IIR headquarters only.

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