Heat exchanger

1. A heat exchanger for use in a vapor compression system comprising:

a shell;

a first tube bundle configured to operate in a falling film mode;

a hood; and

a distributor;

the first tube bundle comprising a plurality of tubes extending substantially horizontally in the shell;

the hood overlies and substantially laterally surrounds substantially all of the tubes of the first tube bundle;

the distributor is configured and positioned to distribute fluid onto at least one tube of the plurality of tubes;

the shell comprises a first process fluid box at one end of the shell and a second process fluid box at an opposed end of the shell;

the plurality of tubes of the first tube bundle extend from the first process fluid box to the second process fluid box, the plurality of tubes comprising at least a first set of tubes and a second set of tubes, the second set of tubes being spaced from the first set of tubes;

the first process fluid box and the second process fluid box each being configured to direct a process fluid through the first set of tubes in a first direction and to direct the process fluid through the second set of tubes in a second direction opposite the first direction.

2. The heat exchanger of claim 1 wherein the spacing between the first set of tubes and the second set of tubes is non-horizontal.

3. The heat exchanger of claim 1 wherein the spacing between the first set of tubes and the second set of tubes is configured to extend horizontally.

4. The heat exchanger of claim of claim 2 wherein the spacing between the first set of tubes and the second set of tubes has a substantially herringbone profile.

5. The heat exchanger of claim 1 wherein the spacing between the first set of tubes and the second set of tubes is associated with a baffle positioned in at least one of the first process fluid box or the second process fluid box.

6. The heat exchanger of claim 1 wherein an arrangement of the first set of tubes and the second set of tubes between the first process fluid box and the second process fluid box represents a multiple pass configuration that is greater than a two pass configuration, at least one of the first or the second set of tubes further includes a first subset of tubes and a second subset of tubes, wherein the first subset of tubes and the second subset of tubes each being configured to direct the process fluid through the first subset of tubes in a first direction and to direct the process fluid through the second subset of tubes in a second direction opposite the first direction.

7. The heat exchanger of claim 1 further comprising a second tube bundle having a plurality of tubes configured to operate at least partially immersed in a continuous boiling liquid mass, the plurality of tubes of the second tube bundle comprising at least a third set of tubes and a fourth set of tubes, the second tube bundle being spaced from the first tube bundle, the first process fluid box and the second process fluid box each being configured to direct a process fluid through the third set of tubes in a first direction and to direct the process fluid through the fourth set of tubes in a second direction opposite the first direction.

8. The heat exchanger of claim 7 wherein the spacing between the third set of tubes and the fourth set of tubes is non-horizontal.

9. The heat exchanger of claim 7 wherein the spacing between the third set of tubes and the fourth set of tubes is configured to extend horizontally.

10. The heat exchanger of claim of claim 9 wherein the spacing between the third set of tubes and the fourth set of tubes resembles a herringbone profile.

11. The heat exchanger of claim 7 wherein the spacing between the third set of tubes and the fourth set of tubes is associated with a baffle associated with at least one of the first process fluid box or the second process fluid box.

12. The heat exchanger of claim 7 wherein an arrangement of the third set of tubes and the fourth set of tubes between the first process fluid box and the second process fluid box represents a two pass configuration.

13. The heat exchanger of claim 7 wherein an arrangement of the third set of tubes and the fourth set of tubes between the first process fluid box and the second process fluid box represents a single pass configuration.

14. The heat exchanger of claim 7 wherein an arrangement of the third set of tubes and the fourth set of tubes between the first process fluid box and the second process fluid box represents a multiple pass configuration that is greater than a two pass configuration.

15. The heat exchanger of claim 7 wherein a process fluid is configured to be directed through at least one tube of the first tube bundle or the second tube bundle, each tube bundle being configured to direct a process fluid through the first set or the third set of tubes in a first direction and to direct the process fluid through the second set or the fourth set of tubes in a second direction opposite the first direction.