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Construction Management

Faculty of Engineering, LTH

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Solutions for energy use in developing countries

Funded by SIDA

The research focuses on passive and semi-passive design as the way to save energy use in buildings, to improve the indoor comfort of occupants of buildings, to provide a pure and healthy air through the reduction of the use of biomass in buildings, as well as contributing to less polluted outdoor air.

Mozambique is a tropical country with abundant solar radiation throughout year. Maputo City, the capital of the country where the study focuses, is a subtropical city with high influence of tropical weather characterised by strong solar radiation along the year. In the city, the main source used for heating water is biomass and kerosene constituting more than 80% of users with electricity and gas covering less than 14% of users. Many citizens have no conditions to afford this expense of biomass, gas or electricity, thus constant interruptions of energy due to non-payment of electrical bills are common and respiratory disease is constant due to taking showers with cold water.  

In the city, the normal behaviour of the citizens in term of bathing is to use hot water for taking a shower even on warm days. Besides this, the available water is not potable, thus for drinking pure water, citizens’ use boiled water. The energy used for these purpose is high, representing about 27% of the total energy used in domestic activities.

This research deals with the development of adequate means that could be used for heating water for bathing and drinking in order to reduce energy cost from boiling water. The use of passive systems based on solar collectors was found to be a suitable means for widespread implemented in Maputo City, Mozambique.

This research project is conducted in collaboration with Eduardo Mondlane University in Mozambique.

Contact: Marcelino Rodrigues or Anne Landin

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