Heating demandsMost traditional heating methods for developing countries are simply open fires. Open fires however cause respiratory health problems due to the smoke generated and incomplete combustion of gases.
Solar water heatingNew designs for heating systems and technologies have been investigated. One key popular method used in both developed and underdeveloped countries is solarhotwater systems. These simply use the infrared radiation from the sun to heat water as it passes through blackened pipes on the roof. The black coating absorbs the radiation. A transparent coating allows the radiation to pass through and insulation surrounding the absorber minimises heat loss to the surroundings. Other than a pump if the design is to be on the roof such that the water needs to gain head height, the overall result is a passive system. The pump can also be solar powered or driven by a micro hydro generator.
Household energies for heatingImproved cook stoves as well as providing a sustainable cooking method also provides heat and often where money and time for fuel collection are scarce both will be used for the same purpose. An IntroductionToHouseholdEnergy provides an overview of the different energies available in off grid areas. Many of these can be used for heating and often dual up with other household energy demands.
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