Subcooler level control for a turbine expansion refrigeration cy

Details Subcooler level control for a turbine expansion refrigeration cy Subcooler level control for a turbine expansion refrigeration cy

1995-01-30

1996-05-14

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62116, 62218, F25B 4100, F25B 100

Patent

active

055156940

ABSTRACT:
A single-fluid two-phase turbine expander is employed in a compression-expansion refrigeration system. The turbine has nozzles of fixed, predetermined orifice and is designed for optimal operation in steady-state normal conditions. A main float valve governs the refrigerant flow to the turbine expander. In order to accommodate off-design conditions, a bypass conduit carries liquid refrigerant around the turbine expander directly to the evaporator. In this case a bypass float valve opens the bypass conduit when the liquid level in the condenser sump reaches a predetermined high level. Alternatively, a float switch and a bypass solenoid can be employed.

REFERENCES:
patent: 2494120 (1950-01-01), Ferro, Jr.
patent: 3277658 (1966-10-01), Leonard, Jr.
patent: 5285653 (1994-02-01), Meloling et al.

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