Brazil: low Income Multi-family House with individual Solar Water Heaters and Gas Back-up

 Thermosiphon systems in Rio de Janeiro” The cooperation project between the German Agency for International Cooperation (GIZ) and the federal housing bank CAIXA bears first fruits. A multi-family house in the Brazilian city of Rio de Janeiro with 496 units was equipped with one thermosiphon system each. This installation serves as a showcase for this kind of technology, as it is the first in Rio de Janeiro which uses gas instead of electricity as an auxiliary heating source.
Photo: GIZ

The newly constructed multi-family houses are destined for low-income families. Each solar water heating unit consists of 2 flat plate collectors and one thermal storage tank of 200 litres, which is enough to meet the heating demand of a family of five. Brazilian engineering bureau Studio Equinócio was commissioned by the GIZ to design and engineer the project. The systems were supplied and installed by Heliotek, a Brazilian collector and tank manufacturer, which belongs to the international Monier Group.

 Multi-family houses” Showcase of solar thermal technology: The newly constructed multi-family houses for low-income families are the first of their kind in Rio de Janeiro.
Photo: GIZ

The project in Rio de Janeiro was developed as part of the 1,000-roof programme between CAIXA and GIZ. The three-year cooperation began in 2009, aimed at a transfer of technological know-how concerning the design and installation of solar water heaters financed by CAIXA. The Brazilian development bank plays an important role in the social housing programme My Home My Life.

CAIXA has financed 43,306 social housing units with solar water heating in 2010. With the project “the solar water heating in social housing”, CAIXA won 1st place in the 2nd Best Practices Award given by Ministry of Environment (MMA) in December 2010.

More information: (in Portuguese)
1,000-roof-programme by the GIZ (in German):
2nd Best Practices Award (in Portuguese):

This text was written by Carlos Faria Café, Director of SE-Studio Equinócio – Marca Solar Group based in Brazil.


By continuing to use the site, you agree to the use of cookies. Find out more by following this link. Accept