Low-cost design to cut indoor heat in Latin American cities ^{CEFR A2}

A study to appear in the November issue of the journal Energy and Buildings looks at low-cost, climate-smart design for housing in Latin America's warming cities. Researchers used computer simulations to test how building configurations perform now and under projected climate conditions in five major cities: Rio de Janeiro, São Paulo, Santiago, Bogotá and Lima. They analysed energy performance, costs and carbon emissions to find better options.

The lead author, Alexandre Santana Cruz, reports that common systems such as traditional masonry, fibre cement or clay tiles with expanded polystyrene and single-pane glass form good, climate-resilient combinations. The team calls these passive design measures because they use natural ventilation, shading and sunlight instead of heavy air conditioning. The study notes these measures are affordable for low- and middle-income countries and that more than a billion people live in inadequate housing worldwide.