Purdue Research Foundation

Bechtel Energy Technologies & Solutions, Inc.

Davide Ziviani

Eckhard Achim Groll

James Edward Braun

David Ladd

Riley Barta

Orkan Kurtulus

Riley B Barta

Xinye Zhang

Florian Simon

Changkuan Liang

Akash Patil

Systems and methods for implementing ejector refrigeration cycles with cascaded evaporation stages that utilize a pump to optimize operation of the ejector and eliminate the need for a compressor between the evaporation stages.

Systems and methods for implementing ejector refrigeration cycles with cascaded evaporation stages

An apparatus for providing an optimized amount of refrigerant to a refrigeration system includes three valves coupled with a fluid coupling, the first valve being coupled between the fluid coupling and an inlet of a refrigerant source, the second valve being coupled between the fluid coupling and an outlet of the refrigerant source, the third valve being coupled between the fluid coupling and the refrigeration system, the fluid coupling having a refrigerant chamber operable to store a volume of refrigerant to selectively provide the volume of refrigerant to the refrigeration system upon operation of the first, second, and third valves.

Portable automatic refrigerant charging device and method

A method for operating and controlling a vapor-compression cycle includes providing a system comprising an evaporator with a fan, a compressor, a condenser with a fan, an integrated expander, and a flash tank device with a vapor/liquid two-phase inlet and two outlets wherein a first outlet is a vapor outlet and a second outlet is a liquid outlet, and a metering valve; bringing a vapor-compression cycle up to steady-state at a fixed operating condition; opening the metering valve until the desired compressor suction superheat is achieved; and maintaining the desired degree of superheat by selectively increasing and decreasing superheat by reducing and increasing metering valve flow rate respectively.

Control method for vapor compression cycle

The present disclosure relates to a novel vapor compression refrigeration system, and the methods of making and using the vapor compression refrigeration system.

Vapor compression refrigeration system

Growing community of inventors

West Lafayette, IN, United States of America

Davide Ziviani