eng Science and Education Publishing Sustainable Energy 2014-02-08 2 1 35 38 10.12691/rse-2-1-7 RSE2014217 article Mohammadjavad Mahdavinejad 1 Sina Khazforoosh Sinakhazforoosh@ut.ac.ir 2 Faculty of Art and Architecture, Tarbiat Modares University, Tehran, Iran Department of Architecture, University of Tehran-Kish International Campus, Iran Energy, plays a crucial role in our everyday life. As energy supplies are limited, energy conservation is unquestionably one of the great importance to all of us. Although improving energy efficiency can be achieved in many ways, but energy saving in buildings plays one of the main roles in saving energy. Using natural ventilation systems can be effective to achieve this goal. This article tries to propose a pattern in which the combination of two common natural ventilation systems, Wind catcher and Chimney, will be use for optimum ventilation efficiency so that the energy efficiency will be increased. http://pubs.sciepub.com/rse/2/1/7/rse-2-1-7.pdf energy efficiencynatural ventilationwind catcherchimneyevaporative coolingPersiana