Patent ID: 9746219
Date: 2017-08-29
CPC Classifications: F25B,F25D

Claim:
1. A refrigeration system comprising: a refrigerant evaporator coil, vapor/liquid separation structure connected to an outlet of said evaporator coil via refrigerant line configured to separate low pressure refrigerant vapor from low pressure refrigerant liquid; a refrigerant compressor connected to an outlet of said liquid-vapor separation device via refrigerant line and configured to compress refrigerant vapor from said vapor liquid separation structure; a refrigerant condenser connected to an outlet of said refrigerant compressor via refrigerant line and configured to condense refrigerant vapor produced in said compressor to refrigerant liquid, a high pressure-side expansion device connected to an outlet of said refrigerant condenser via refrigerant line and configured to reduce pressure of refrigerant liquid received from said refrigerant condenser; a collection vessel connected to an outlet of said high pressure-side expansion device via refrigerant line for receiving refrigerant liquid from said high pressure-side expansion device; a low pressure-side expansion device connected to an outlet of said collection vessel via refrigerant line and configured to reduce pressure of refrigerant liquid received from said collection vessel; refrigerant line connecting an outlet of said low pressure-side expansion device to an inlet of said vapor/liquid separation structure and configured to deliver refrigerant liquid to said separation structure; said vapor/liquid separation structure having a liquid outlet that is connected via refrigerant line to an inlet of said evaporator; wherein said vapor/liquid separation structure, said compressor, said high pressure side expansion device, said collection vessel, and said low pressure side expansion device are situated inside a pre-packaged modular machine room; wherein said refrigeration system requires less than six pounds of refrigerant per ton of refrigeration capacity.