Heat exchange system

A method of operating a heat exchange system in order to operate a second heat exchanger within an indoor space to selectively provide cooling in the indoor space and provide heating in the indoor space:

• providing a second heat exchanger that is disposed within an interior space, wherein the second heat exchanger comprises first and second manifolds that are disposed at opposite ends of one or more flowpaths that are fluidly connected with both of the first set of tubes and the second set of tubes;
• providing a first heat exchange assembly that is configured to be disposed in an outdoor space configured for outside air to flow therethrough, the second heat exchange assembly comprising:
• a first set of tubes that are arranged in a parallel flow manner between a first manifold and a second manifold, wherein straight portions of adjacent tubes within the first set of tubes are disposed with a space therebetween along each tube of the first set of tube between the first and second manifolds;
• a second set of tubes that are arranged in a parallel flow manner between a third manifold and a fourth manifold, wherein straight portions of adjacent tubes within the second set of tubes are at least partially disposed within the space between straight portions of adjacent tubes of the first set of tubes;
• wherein a refrigerant that flows through the first set of tubes additionally flows through the second set of tubes before the refrigerant returns to again flow through the first set of tubes;
• operating a compressor, and
• providing an expansion valve such that refrigerant flows through the system flows through the expansion valve,
• when desired to provide cooling within the indoor space, operating the system in a first mode of operation, aligning the system such that refrigerant that flows through the compressor reaches the compressor after flowing through the second set of tubes and upon leaving a compressor outlet flows through the first set of tubes, and
• when desired to provide heating within the indoor space, operating the system in the second mode of operation, aligning the system such that refrigerant that flows through the compressor reaches the compressor after flowing through the first set of tubes and upon leaving the compressor outlet flows through the second heat exchanger before flowing through the second set of tubes.

A heat exchange system comprising:

• a first heat exchange assembly that is configured to be disposed in an outdoor space configured for outside air to flow therethrough, the first heat exchange assembly comprising:
• a first set of tubes that are arranged in a parallel flow manner between a first manifold and a second manifold, wherein straight portions of adjacent tubes within the first set of tubes are disposed with a space therebetween along each tube of the first set of tube between the first and second manifolds;
• a second set of tubes that are arranged in a parallel flow manner between a third manifold and a fourth manifold, wherein straight portions of adjacent tubes within the second set of tubes are at least partially disposed within the space between straight portions of adjacent tubes of the first set of tubes;
• wherein a refrigerant that flows through the first set of tubes additionally flows through the second set of tubes before the refrigerant returns to again flow through the first set of tubes;
• a second heat exchanger that is disposed within an interior space, wherein the second heat exchanger comprises first and second manifolds that are disposed at opposite ends of one or more flowpaths that are fluidly connected with both of the first set of tubes and the second set of tubes;
• a compressor, and
• an expansion valve, and
• wherein in a first mode of operation refrigerant that flows through the compressor reaches the compressor after flowing through the second set of tubes and upon leaving a compressor outlet flows through the first set of tubes.