Hybrid photovoltaic power generation system for heating water using solar energy in residence, comprises solar cell module, solar thermal collector, heat exchanger, connections, boiler and water pipes
PROCESS FOR MANUFACTURE OF BRUSHS AND ELECTRIC COMMUTATORS COATED WITH DOPED DIAMOND FOR ELECTRIC ENGINES
Fabrication of a vitreous carbon powder and thermosetting resin conducting glue consists of mechanical mixing, with air curing of the product