Upgraded technology and equipment for soil processing and sowing in extreme conditions
The results of joint research work carried out over many years by several leading institutions to create, justify, and conduct field, industrial, and state tests of competitive grain production technology based on domestic equipment are presented.
Ploughing quality and energy consumption depending on plough bodies type
Experimental determination of ploughing quality and energy consumption carried out on loamy soils most common for the arable lands in European part of Russia. The field tests done for three standard types of mouldboard body surfaces: cultural, semi-helicoidal (cylindroid) and helicoidal. Results shows that bodies with cylindroid mouldboard surface had better soil crumbling against cultural (digger) body surfaces. Helicoidal bodies supplied better quality of soil layer turnover than cultural and semi-helicoidal ones. Designed plough construction allowed change ploughshares installation angles relative to the furrow line from 25 to 55°. Optimal ploughshares angle to the furrow line obtained 45…50°. The traction resistance force of the plough equipped with helicoidal bodies was measured 6…8% lower than cultural bodies and 3…4% lower than cylindroid ones at tractor speed 2.5…3.0 m-s-1.
Heat Transfer Characteristic for a New Plate Metal Hydride Reactor
The property of major metal hydride reactors in the world was analyzed and a new plate metal hydride reactor was designed.An experimental facility to test the metal hydride reactor was also designed correspondingly.The effective thermal conductivity of the plate metal hydride reactor was measured by varying the initial metal hydride packing fraction,the kind of filled gas and the pressure of the filled gas,cycle numbers.The test results show that the effective thermal conductivity of the reactor,has exceeded(7.5) W/(m·K) before activation,which is increased greatly.After alloy activation,the effective thermal conductivity of the reactor has a linear change trend with the hydrogen pressure during the interval 0.1~3.5 MPa.The effective thermal conductivity of the reactor just only decreases quickly at the beginning,but becomes stable after several cycles.