A comparative study of paper produced from zea mays - Philippine ...

#28
The device to harness th mechanical energy released
during the deceleration of an automobile
Giselle G Gervacio, Elma S Dizon, Yvonne R Pineda, Emmeline G Cadabes,
Geneva M Selirio
ABSTRACT
The study deals with the construction of a fuel economizer which
works by reutilizing the harnesses mechanical energy released during the
deceleration of an automobile. The principal parts of the device are: an
alternator which converts mechanical energy to electrical energy, a DC source
which stores the generated energy, and a DC motor which reconverts the
electrical energy into mechanical energy. Consequently, the device helps the
engine propel the vehicle, thereby lessening the engine’s load.
Efficiency tests conducted to compare the fuel economy of the car with
the device and the car without the device, showed that no significant amount
of fuel is saved under the simulated traffic condition, whereas 14% fuel
saving was observed under the cruising speed condition. This result was
obtained despite the utilization of roughly only 1% available energy. The
feasibility of mechanical energy re-utilization is thus demonstrated, and a step
towards maximizing energy utilization has been taken. With further
improvements, it is recommended that the device be integrated as part of
vehicles, especially of buses.
#29
The utilization of the magnus effect in improving windfall
performance
Benjamin Granada, Apollo Sangalang, Reyman Selirio, Richard dela Torre,
Ricardo Zarate Jr
ABSTRACT
The magnus effect was applied to the conventional two-bladed rotor
and resulted in a Savonius version of the present barrel version which uses
the Magnus Effect. This resulted in a windmill of the horizontal gender with
two pairs of open semi-circles freely rotating and a main gear at the center
to help convert the spinning into power. The two pairs of split-barrels were
constructed out of scrap GI sheets and connected to a main aluminum shaft
by two bearings that made the Savonius rotors rotate in any direction. A
turntable and wind vane kept the windmill (Hrunting I) facing the wind.
The project gave a negative result due to mechanical and
constructional problems due to the cumbersome weight of each rotor, in
instability of only one bearing supporting the windmill and problems of friction
encountered with the bearings.