Assessing external double skin envelopes coupled with night ventilation and thermal mass for passive cooling in the tropics

  • YEAR
    2016
  • AUTHORS
    Rupasinghe, Himalshi Tharanga
  • CATEGORIES
    2016 Conference Papers
    Architectural Science and Building Design
    Conference Papers

Extract

The paper conceptualizes and investigates the potential of utilizing double skin envelops consist of thermal mass coupled with night ventilation for passive cooling in warm humid climates. On-site thermal performance investigations resulted in redefining thermal mass effect in double skin envelopes. The work demonstrates that thermal mass in the double skin envelope contributed to work as a heat sink thus promoting passive cooling although the tropics are characterized with slight diurnal ranges as compared to hot dry climates. Results provide evidence of passive cooling with internal air temperatures moving 2-3.5 degrees C below the ambient levels due to envelope dependency with heat removal, stack force and night ventilation primarily created due to double skin envelopes. Findings show empirical evidence of passive cooling suggesting that the double skin envelopes can play a positive role in addressing extreme climatic conditions.

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