3.1.1. The load torque
For the RERDs, the load torque is one of the key parameters to evaluate the feasibility of the mating clearance. Besides, a Nilotinib of the load torque will permit the minimization of the mating clearance in a further step, and ensure the device with a high efficiency.
Fig. 5 shows the torque of the textured RERD and the un-textured RERD when the operating pressure changes from 1.0 MPa to 6.0 MPa with the mating clearance of 0.035 mm and rotary speed of 500 rpm. The data indicates that the load torque increases with the rise of the operating pressure for both the textured RERD and the un-textured RERD. Fortunately, the torque of the textured RERD is dramatically lower than secondary xylem of the un-textured RERD. Under an operating pressure of 6.0 MPa, the torque of the textured RERD is about 7.0 N·m which is only about half of that of the un-textured RERD.
Fig. 5. Torque comparison between the textured RERD and the un-textured RERD under different operating pressures with a mating clearance of 0.035 mm, rotary speed of 500 rpm and flow rate of 12 m3/h.Figure optionsDownload full-size imageDownload as PowerPoint slide