US 5,412,950 A · Energy recovery system

Abstract

This invention is a gas wave refrigeration method and a corresponding device used in an energy recovery system, which employs a mechanism creating a pulsating flow wave resonant interactions to generate cooling and heating effects without any mobile parts used in the device. The said system includes a precooler, a gas-liquid separator, and a gaseous wave refrigeration device (GWRD). The GWRD consists of a flow buffering chamber, a convergent nozzle, a oscillating chamber, resonant tubes, and a flow stabilizer. The operation of the GWRD is based on a pulsating flow production created by wave interactions between laterally oscillating high speed jets and resonant tubes. Such method of the pulsating flow production omits a conventional bistable element or other flow switching elements used in prior similar devices. A longitudinal resonating phenomenon of resonant tubes which provides a energy transformation and cooling effect is produced simultaneously by such wave interaction process. By means of this method and device, the energy recovery system provides an effective operation in a wide range of working conditions of pressurized gases in separation and liquefaction applications.

Claims14

Dependent claims

A gaseous wave refrigeration apparatus comprising:

(a) a gaseous wave refrigeration apparatus having a convergent nozzle, an oscillating chamber connected to said convergent nozzle, a plurality of resonant tubes having open end connected at apertures to said oscillating chamber, and a flow stabilizer crossing over said oscillating chamber at the apertures of said resonant tubes, and
(b) a resonant refrigeration means using a pulsating flow of a periodic jet oscillation from said convergent nozzle in said oscillating chamber driven alternatively by each of said resonant tubes, wherein said jet oscillation, maintained by a pressure positive feedback loop comprising said stabilizer and said resonant tubes, couples with the intrinsic resonant frequency of a gaseous column in said resonant tubes and governs a resonant cooling effect accompanied with said intrinsic resonant frequency of gaseous column in said resonant tubes.

A gaseous wave refrigeration apparatus comprising:

(a) a gaseous wave refrigeration apparatus having a convergent nozzle, an oscillating chamber connected to said convergent nozzle, a plurality of resonant tubes having open connected at apertures to said oscillating chamber, and a flow stabilizer means crossing over said oscillating chamber adjacent the open ends of said resonant tubes, and
(b) a resonant refrigeration means using a pulsating flow of a periodic jet oscillation from said convergent nozzle in said oscillating chamber driven alternatively by each of said resonant tubes, wherein said jet oscillation, maintained by a pressure positive feedback loop comprising said stabilizer means and said resonant tubes, couples with the intrinsic resonant frequency of a gaseous column in said resonant tubes and governs a resonant cooling effect accompanied with said intrinsic resonant frequency in said resonant tubes, and
(c) wherein said stabilizer means eliminates mutual interference of discharging flow among open ends of said resonant tubes in said oscillating chamber, diminishes mutually mixing losses between discharging flow among the open ends of said resonant tubes and moving said jet in said oscillating chamber, balances flow load state among open ends of said resonant tubes, and forms a steady feedback loop of said jet oscillation in said oscillating chamber for said jet interchanging to sweep over the each open end of said resonant tubes.

Dependencies are inferred from the claim text.

Energy recovery system

Life of this patent

Energy recovery system

Life of this patent

Abstract

Claims14