Estimating the performance of natural draft evaporative coolers

T. Lewis Thompson, Nader V. Chalfoun, Martin R. Yoklic

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


In relatively arid regions, natural draft evaporative coolers can be used for cooling residential and commercial buildings, as well as outdoor areas, however, their design can be time consuming. Several approximations are presented here to simplify the computations. Density calculations are eliminated using a correction term with wet and dry-bulb temperatures. Under calm conditions, iterative calculations involving the pad air velocity and efficiency can be eliminated with a logarithmic approximation.

Original languageEnglish (US)
Pages (from-to)909-915
Number of pages7
JournalEnergy Conversion and Management
Issue number11
StatePublished - Nov 1994


  • Evaporative cooling
  • Natural draft
  • Passive cooling

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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