Patent ID: 11898571
Assignee: TRANE INTERNATIONAL INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. The lubricant supply system of claim 5, wherein the one or more refrigeration circuits include:
a first refrigeration circuit including the second working fluid, the expander, the auxiliary compressor, and the lubricant heater that is a heat exchanger configured to heat the lubricant with the second working fluid, and
a second refrigeration circuit including a third working fluid, a second auxiliary compressor, a second expander, and the lubricant cooler that is a heat exchanger configured to cool the lubricant flowing through the lubricant pathway with the third working fluid, the third working fluid including a refrigerant and being different from the first working fluid and the second working fluid.