The following tests are tests of the installation of WHD-2, located on the platform of the car "GAZ-33021" when driving a car.
The tests took place during the period from 01.04. on 04.04.2011, at the forest road on the outskirts of Kiev. The quality of roads allowed to develop short-term rate of up to 85 km / h, stable measurements could be produced at speeds up to 70 km / hour.
Geometrical parameters of the work items and their location on the platform installation WHD-2 were the same as during hydrotest.
During testing at the facility WHD-2 associated with the transformation of the kinetic energy of the oncoming air flow when the vehicle (car) into useful work, changed the air flow rate and the load on the generator.
Measured parameters: power generated by setting the WHD-2 speed gear (crank shaft)
Calculated parameters: the efficiency of the installation WHD-2.
Diagram of the experimental setup on the car shown in Fig. 30.
Installing the WHD-2, a platform 1 which is mounted on a support frame structure 2, was placed in the back of 3 car "GAZ-33021" on four legs 4, made of pipes (diameter 42 mm., 2 mm thick., Length 800 mm. .) Reliance 2 was attached to the body 3 car with four conventional rigging straps (shown in Fig. 30 not shown). The lower edge of the working elements 5 arranged at 150 mm. above the cab 6. Generator 7 was installed on one of the shafts 8 crank mechanism (shown in Fig. 30 not shown), which also installed pinion gearing 9. Remote control and sensor recording speed of the shaft of the generator (shown in Fig. 30 not shown) was in the cab. The number of workers investigated 5 elements is 8. Arrow 10 shows the flow of oncoming air.
Parameters of the work items and their locations (the phase angle between work items and work items between rows) were the same as during hydrotest.
On the lateral surface of the work items in the rear edges were assigned a red ribbon material to visually check the characteristics of the air flow of work items.
The device operates as follows. When driving 3 the oncoming air stream 10 communicates with the working elements 5. The scheme of interaction similar to the scheme shown in Fig. 6. Under the influence of the total component of the flow and UAI, which coincide with the direction of reciprocating movement of the working elements 5, the reciprocating movement of the working elements 5 by means of a crank-connecting rod mechanism (shown in Fig. 30 not shown) are converted into rotational movement of shaft 8, one of which is set generator 7. Operating elements 5 are connected together by means of toothed gears 9, so the forces resulting from the shaft 8 of the generator 7, equal to the total effort of all the working elements 5, resulting from the interaction of the working elements 5 with the flow of oncoming air 10. The generator converts energy 7 shaft 8 in the three-phase alternating current which, after conversion (see Fig. 29), fixed installations in the unit (in Fig. 30 not shown) mounted in the cab.
Plots of output power from the vehicle speed and load on the generator shown in Fig. 31.
In the graphs can be clearly seen a proportional increase in power generated by the generator, depending on the speed of the car.
Maximum power was taken at a frequency of rotation of the shaft of the generator is equal to 140 rev / min and the speed of 70 km / h, the minimum power was removed when the generator shaft speed of 40 rev / min and the speed of 40 km / hour.
Plots of efficiency produced by the generator when the vehicle depending on speed and load on the generator shown in Fig. 32.
With increasing speed and load on the generator efficiency of the installation increases to its maximum value and then begins to fall. In the case of the load on the generator is equal to 3 om., efficiency has not reached its maximum. The maximum efficiency will be achieved at higher vehicle speeds.