Heat exchanger for a vapor compression system
Embodiments of the present disclosure relate to a vapor compression system that includes a refrigerant loop, a compressor disposed along the refrigerant loop and configured to circulate refrigerant through the refrigerant loop, a condenser disposed downstream of the compressor along the refrigerant loop, where the condenser includes a plurality of tubes disposed in a shell and a diffusion area configured to enhance thermal energy transfer within the condenser, where the diffusion area is defined by a cavity of the condenser without a tube of the plurality of tubes, and an evaporator disposed downstream of the condenser along the refrigerant loop.
1. A vapor compression system, comprising:
a refrigerant loop;
a compressor disposed along the refrigerant loop and configured to circulate a refrigerant through the refrigerant loop;
a condenser disposed downstream of the compressor along the refrigerant loop, wherein the condenser is configured to receive the refrigerant through a first inlet and a second inlet of the condenser, wherein the first inlet is disposed above the second inlet relative to a vertical dimension of the condenser, wherein the condenser comprises a plurality of tubes disposed within a shell of the condenser, wherein the condenser comprises a passage lane configured to enhance thermal energy transfer within the condenser, wherein the passage lane is aligned with and extends from the second inlet through the shell of the condenser to form a gap between a first tube bundle and a second tube bundle of the plurality of tubes, wherein the passage lane extends horizontally through the shell of the condenser and extends across a diameter of the shell from a first diametric point of the shell to a second diametric point of the shell, and wherein the gap of the passage lane comprises a length that is greater than a tube diameter of a tube of the plurality of tubes; and
an evaporator disposed downstream of the condenser along the refrigerant loop.
2. The vapor compression system of claim 1 , wherein the condenser comprises a single tube plate disposed between axial ends of the shell and configured to receive and support at least one tube of the plurality of tubes to reduce vibrations of the at least one tube, and wherein the condenser does not include an additional tube plate between the axial ends of the shell.
3. The vapor compression system of claim 1 , wherein the condenser comprises a distributor trough extending into and axially along a diffusion area of the condenser.
4. The vapor compression system of claim 3 , wherein the distributor trough is configured to receive a portion of the refrigerant from the first inlet.
5. The vapor compression system of claim 4 , wherein the distributor trough comprises an axially oriented channel or plurality of openings formed in a collection surface of the distributor trough and configured to enable distribution of the portion of the refrigerant to the diffusion area.
6. The vapor compression system of claim 1 , wherein at least a portion of a boundary of the passage lane is defined by a plurality of dry tubes of the first tube bundle, the second tube bundle, or both, wherein the plurality of dry tubes is configured to block refrigerant flow therethrough.
7. The vapor compression system of claim 1 , comprising an intermediate vessel positioned between the condenser and the evaporator.
8. The vapor compression system of claim 7 , wherein the intermediate vessel comprises a flash tank.
9. The vapor compression system of claim 7 , wherein the intermediate vessel comprises a surface economizer.
10. The vapor compression system of claim 1 , comprising at least one expansion device positioned between the condenser and the evaporator.