Multi-vane expanders are positive displacement volumetric machines which are nowadays considered for application in micro-power domestic ORC systems.
The paper considers the prospective design of hybrid power piston volumetric machines through the use of gas pressure oscillations in the discharge line.
This work is included in a more extended study on small volumetric machines, that are suitable for a developing small solar power plant (1-3 kW).
Combined cycle gas turbines (CCGTs) are volumetric machines, which means that their net power output decreases at air temperatures above the design point.
Using the developed mathematical model, a numerical experiment of the effect of the ratio of discharge pressure and the suction pressure on the operating processes, power and loss characteristics of the hybrid power piston volumetric machines.
Compared to the other types of volumetric machines and micro turbines, which are adopted in micro-power domestic ORC systems, multi-vane machines feature a lower gas flow capacity, lower expansion ratios, and an advantageous ratio of the power output to the external dimensions.
A volumetric HD machine (model 2008H, Fresenius USA, Walnut Creek, CA) controlled all BFR, DFR, and UFR.
A volumetric HD machine (model 2008H, Fresenius USA, Walnut Creek, CA) was used to control the BFR, DFR and UFR.
Postdilutional HDF sessions were delivered by volumetric dialysis machines (4008 H; Fresenius Medical Care [FMC], Bad Homburg, Germany).
This paper proposes a new method, a Self-adaptive Mathematical Expression Model (SMEM), to describe volumetric errors of machine tools based on Non-Uniform Rational B-Spline (NURBS).
