Sustainable Energy for Development: People, organizations, and projects active in environmentally benign energy sources for developing countries.
Ken Novak's Weblog
Friday, October 10, 2003
Solar-Powered Refrigeration: "Designed to function in arid to semi-arid regions with at least 5 sun-hours per day, the PV direct-drive, or PV direct, SunDanzer solar refrigerator is a chest-type cabinet with a 105-liter (3.7 cubic feet) internal volume, a lockable top-opening door, a corrosion-resistant coated steel exterior, and a patented low-frost system. It uses thermal storage for cooling efficiency, with a direct connection between the vapor compression cooling system and the PV module. This is accomplished by integrating a phase-change material into a well-insulated refrigerator cabinet and developing a microprocessor-based control system that permits the direct connection of a PV module to a variable-speed compressor. The integration allows for peak power-point tracking and the elimination of batteries.. The solar refrigerator's thermal storage material provides 7 days of reserve cold storage, even in tropical climates, or during extensive periods of cloudy weather .. Light indicators on the front of the refrigerator inform users of the status of the thermal reserve.
For frequently cloudy regions or areas with less than 5 sun-hours per day, SunDanze Refrigeration offers highly efficient battery-powered refrigerators, as well as freezers. These units run on 12 or 24 volts, direct current, and require a smaller PV or renewable energy system. " Current retail price $900. 2:23:15 PM
Tuesday, October 07, 2003
Ghana rural electricity
: High proportion of PVs, using export financing from Spain, China, India, and Korea: "Under the project, financed by the United Nations Development Programme (UNDP) and the Ghana Government, 2,300 solar systems have been installed in the Northern, Upper East and Upper West Regions in schools, residential property, health facilities and water pumping systems, as well as street lighting.
The Minister said the government was sourcing a 15 million-dollar and a six million-dollar funding from the Spanish government and the China Exim Bank respectively for the development and expansion of solar systems throughout the country. .. Dr Nduom announced that under the Rural Electrification Programme, the government was seeking 25 million dollars from Exim Bank of India and 50 million dollars from the Korean Exim Bank for the extension of electricity to the rural areas. 4:09:15 PM
Dr Nduom said under the Rural Electrification Programme 1,000 communities would be connected to the national grid throughout the country while 650 other communities would be connected under the Self Help Electrification Programme (SHEP)... Mr John Nuworklo, Northern Regional Director of NED said VRA/NED had signed a contract for the supply of 50,000 pre-paid meters for the next three years for distribution to customers."
Monday, October 06, 2003
: features many small and medium-sized solar energy projects in developing countries. 2:16:52 PM