Theoretical and Experimental Researches Regarding the Performances of a New Type of Rotating Machine with Profiled Rotors

Abstract

The paper establishes an original computation formula for the flow rate of the fluid transported by a new type of rotating machine with profiled rotors; the theoretical characteristic diagram of the machine - flow rate versus machine speed - is built. The scheme of the test stand used for performing measurements needed in order to build the experimental diagram is presented. The variation of the volumetric efficiency of the working machine in function of the machine speed is finally described.

Assessing Friction Effect due to the Viscosity between the Rotor and a Rotating Machine Case

“…If the rpm of the machine increases, the consumed power for overcoming the viscous friction increases as well Figure 8. The influence of this consumed power is very small [17]. The consumed power increases when the machine rpm increases.…”

A Constructive Solution that Can Function As a Force Machine or As a Work Machine

“…The fluid aspired into the suction connection (2) figure 1, is transported by a rotation movement by the pistons (6) to the discharge connection (5), the fluid can be polyphase (air + water, water + sand, water + steam, water + ash, etc.) or it may be viscous, or high density.…”

Determining the energy performance of a rotating machine for fluid flow

“…The present paper presents the operation of the machine as a rotating volumetric pump with profiled rotors [1,2].…”

“…The machine ( Figure 1) consists of has two identical rotors (2, 5) with a special shape which rotates within a case (1,4) with the same speed. The rotation of the two rotors is synchronous and is provided by a cylindrical gear consisting of two inclined gear wheels located in or out the machine.…”

“…The most common are thermal machines, after the principle of operation, are classified as follows [1]:…”