SUBCOOLER LEVEL CONTROL FOR A TURBINE EXPANSION REFRIGERATION CYCLE

SUBCOOLER LEVEL CONTROL FOR A TURBINE EXPANSION REFRIGERATION CYCLE

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 24 GOVERNS THE REFRIGERANT FLOW TO THE TURBINE EX...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: STEVEN E. MELOLING, VISHNU M. SISHTLA
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
WEAPONS
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Beschreibung
Zusammenfassung: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 24 GOVERNS THE REFRIGERANT FLOW TO THE TURBINE EXPANDER (19). IN ORDER TO ACCOMMODATE OFF-DESIGN CONDITIONS, A BYPASS CONDUITS (23) CARRIES LIQUID REFRIGERANT AROUND THE TURBINE EXPANDER (19) DIRECTLY TO THE EVAPORATOR (21). IN THIS CASE A BYPASS FLOAT VALVE (24) OPENS THE BYPASS CONDUIT (23) WHEN THE LIQUID LEVEL IN THE CONDENSER SUMP REACHES A PREDETERMINED HIGH LEVEL. ALTERNATIVELY, A FLOAT SWITCH (30) AND A BYPASS SOLENOID (31) CAN BE EMPLOYED. FIG. 1