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US 11,448,427 B2Granted
Heat-recovery-enhanced refrigeration system
AssigneeCarrier Corporation
InventorsHongsheng Liu, Parmesh Verma, Frederick J. Cogswell, Yinshan Feng
Life of this patent
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Abstract
A refrigerated system includes a vapor compression system defining a refrigerant flow path and a heat recovery system defining a heat recovery fluid flow path. The heat recovery system is thermally coupled to the vapor compression system. The heat recovery system includes a first heat exchanger within which heat is transferred between a heat recovery fluid and an engine coolant and at least one recovery heat exchanger positioned along the heat recovery fluid flow path directly upstream from the first heat exchanger.
Claims15
A refrigerated system comprising:
- a vapor compression system defining a refrigerant flow path, the vapor compression system including a compressor and a condenser;
- a closed loop heat recovery system defining a heat recovery fluid flow path comprising a primary fluid loop and a secondary fluid loop, the heat recovery system being thermally coupled to the vapor compression system, wherein the heat recovery system includes:
- a first heat exchanger within which heat is transferred between a heat recovery fluid and an engine coolant;
- a subcooler positioned along the heat recovery fluid flow path, wherein the heat recovery system is thermally coupled to the vapor compression system at a location downstream from the condenser at the subcooler;
- and
- at least one recovery heat exchanger positioned along the heat recovery fluid flow path directly upstream from the first heat exchanger, wherein the heat recovery system is thermally coupled to the vapor compression system at the at least one recovery heat exchanger such that heat is transferred between the heat recovery fluid and the refrigerant within the at least one recovery heat exchanger;
- wherein the first heat exchanger and the at least one recovery heat exchanger are positioned along the primary fluid loop and the subcooler is positioned along the secondary fluid loop.
4 more elements
A method of operating a transport refrigeration system including a vapor compression system and a heat recovery system comprising:
- circulating a refrigerant through a vapor compression flow path of the vapor compression system, the vapor compression system including a compressor and a condenser;
- circulating a heat recovery fluid through a heat recovery fluid flow path of the heat recovery system, the heat recovery fluid flow path including a primary flow path and a secondary flow path, wherein, the heat recovery system includes a heat exchanger for transferring heat between the heat recovery fluid within the heat recovery fluid flow path and an engine coolant, the heat exchanger being arranged along the primary flow path;
- and
- transferring heat to the heat recovery fluid within the heat recovery fluid flow path from the refrigerant within a heat recovery heat exchanger arranged along the primary flow path the heat recovery heat exchanger being separate from the condenser and located directly upstream from the heat exchanger, the vapor compression system being thermally coupled to the heat recovery system at the heat recovery heat exchanger;
- and
- transferring heat to the heat recovery fluid within the heat recovery fluid flow path from the refrigerant within a subcooler arranged along the secondary flow path, the subcooler being located downstream from the condenser relative to the vapor compression flow path.
3 more elements
A refrigerated system comprising:
- a vapor compression system defining a refrigerant flow path, the vapor compression system including a compressor and a condenser;
- a closed loop heat recovery system defining a heat recovery fluid flow path comprising a primary fluid loop and a secondary fluid loop, the heat recovery system including:
- a first heat exchanger within which heat is transferred between a heat recovery fluid and an engine coolant;
- a subcooler positioned along the heat recovery fluid flow path, wherein the heat recovery system is thermally coupled to the vapor compression system at a location downstream from the condenser at the subcooler;
- and
- at least one recovery heat exchanger positioned along the heat recovery fluid flow path upstream from the first heat exchanger wherein the heat recovery system is thermally coupled to the vapor compression system at the at least one recovery heat exchanger such that heat is transferred between the heat recovery fluid and the refrigerant within the at least one recovery heat exchanger, the at least one recovery heat exchanger arranged downstream from an outlet of the compressor and upstream from an inlet of the condenser;
- wherein the first heat exchanger and the at least one recovery heat exchanger are positioned along the primary fluid loop and the subcooler is positioned along the secondary fluid loop.
4 more elements
Dependencies are inferred from the claim text.