The utilization of the renewable energy have been know many people, therefore to increasing utilized solar energy the effectiveness of the use of solar energy directly of them are in the use of plate solar collector flat as a gatherer of the heat of the sun rays that uses three motorcycles collector by an absorber granite stone with varying thick glass cover consisting of 3 mm , 5 mm and 8 mm.…
The composite sandwiches have been developed and produced for various aspects of life. Unsaturated polyester content combined with pin from coconut leaf bone that grows around us and polyurethane rigid foam as core. The method of sandwich composite joints is very important when applied to construction such as window panels, walls, roofs, floors, and others The Z-pin angle variation and Z-pin va…
The utilization of renewable energy have started many knowns, therefore to increase the effectiveness of utilization of solar energy directly, such as with the utilization of solar collectors as collecting solar heat rays that use two flat-plate collector absorbers with granite stones with a variation of the amount of cover that is a duplicate of one glass and double glazing with a thick glass …