Trane International Inc.

Matthew Aron Witt

Brian Thomas Sullivan

Daoud Ali Jandal

Reginald Loyd Berry

Damion Scott Plymesser

Ronald Allen Boldt

Steven Erwin Meloling

Dennis Lee Justin

Apparatuses, systems, and methods are disclosed to prime a refrigerant pump by decoupling the condenser from the refrigerant pump and the refrigerant pump line or shielding from a condenser operation prior to startup of the system, so that liquid refrigerant can be appropriately sourced from the condenser and/or the evaporator using flow control device(s) such as a source valve on a source line of the condenser and/or on a source line of the evaporator and the control of such valve(s).

Refrigerant cooling and lubrication system

Generally, apparatuses, systems, and methods are described to vent refrigerant vapor from the refrigerant pump line using a vent line, such as during priming of the pump and/or during a startup of the compressor, directed to a relatively reduced volute casing mass of the refrigerant pump, and/or directed to returning refrigerant to an economizer or chiller component other than the condenser.

Refrigerant cooling and lubrication system with refrigerant vapor vent line

Generally, apparatuses, systems, and methods are described that are directed to accessing liquid refrigerant from an evaporator to source a refrigerant pump and pump line to cool and lubricate such moving parts that may be part of the compressor, for example the compressor motor and the compressor bearings, and/or for cooling drives such as an adjustable or variable frequency drive.

Refrigerant cooling and lubrication system with refrigerant source access from an evaporator

Generally, apparatuses, systems, and methods are described to prime a refrigerant pump by decoupling or shielding from a condenser operation, such as for example the condenser water pump, so that liquid refrigerant can be appropriately sourced from the condenser and/or the evaporator using flow control device(s) such as a source valve on a source line of the condenser and/or on a source line of the evaporator and the control of such valve(s).

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La Crosse, WI, United States of America

Matthew Aron Witt