Sensible Heat Bean Cooker

Alternative cooking energy to replace wood fuels is needed in the African context. Liquified Natural Gas (LNG) a solution but still based on burning fossil fuel. Electrical cookers can be an alternative as well. However, for off-grid systems this means electrical batteries are required, solar electricity from Photovoltaic (PV) panels intermittent, and also made after sunset. Heat storage technologies provide solutions where available stored form of heat when needed. The challenge then develop which robust, safe, technically simple. A very simple small-scale demonstrated here, particular case beans. An insulated iron cylinder heated, either concentrator or by PV-powered heating elements. calibrated given volume After has reached temperature during charging, pot placed left top cylinder. When depleted, beans should ready cooked.