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An exhaust gas waste heat recovery heat exchanger includes a housing having a working fluid inlet, a working fluid outlet, an exhaust inlet, and an exhaust outlet, an exhaust flow path extending through the housing between the exhaust inlet and the exhaust outlet, and a working fluid flow path exten

An exhaust gas waste heat recovery heat exchanger includes a housing having a working fluid inlet, a working fluid outlet, an exhaust inlet, and an exhaust outlet, an exhaust flow path extending through the housing between the exhaust inlet and the exhaust outlet, and a working fluid flow path extending through the housing between the working fluid inlet and the working fluid outlet and having a first portion and a second portion. A flow of working fluid along the first portion of the working fluid flow path can be substantially counter to a flow of exhaust along the exhaust flow path, and the flow of working fluid along the second portion of the working fluid flow path can be substantially parallel to the flow of exhaust along the exhaust flow path.

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1. An exhaust gas waste heat recovery heat exchanger comprising: a housing having a working fluid inlet, a working fluid outlet for dispensing a superheated vapor, an exhaust inlet, and an exhaust outlet;an exhaust flow path extending through the housing between the exhaust inlet and the exhaust out

1. An exhaust gas waste heat recovery heat exchanger comprising: a housing having a working fluid inlet, a working fluid outlet for dispensing a superheated vapor, an exhaust inlet, and an exhaust outlet;an exhaust flow path extending through the housing between the exhaust inlet and the exhaust outlet; anda working fluid flow path extending through the housing between the working fluid inlet and the working fluid outlet and having a first portion adjacent to the working fluid inlet and a second portion spaced apart from the working fluid inlet, a flow of working fluid along the first portion of the working fluid flow path being substantially counter to a flow of exhaust along the exhaust flow path adjacent to the first portion of the working fluid flow path, the flow of working fluid along the first portion of the working fluid flow path that is substantially counter to the flow of exhaust is located within the housing to receive heat from the flow of exhaust traveling along the exhaust flow path, the flow of working fluid along the second portion of the working fluid flow path being substantially parallel to the flow of exhaust along the exhaust flow path adjacent to the second portion of the working fluid flow path. 2. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein heat transferred from the flow of exhaust traveling along the exhaust flow path to the working fluid traveling along the second portion of the working fluid flow path vaporizes and superheats the working fluid before the working fluid exits the housing through the working fluid outlet. 3. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the housing substantially encloses a vaporizer operable to vaporize at least a portion of the flow of working fluid traveling along the second portion of the working fluid flow path, a superheater operable to superheat the flow of working fluid traveling along the second portion of the working fluid flow path, and a preheater positioned along the first portion of the working fluid flow path and being operable to transfer heat from the flow of exhaust to the flow of working fluid traveling along the first portion of the working fluid flow path before the working fluid enters the vaporizer. 4. The exhaust gas waste heat recovery heat exchanger of claim 3, wherein heat is transferred from the exhaust flow to the working fluid flow in at least one of the vaporizer and the superheater before the exhaust flow enters the preheater. 5. The exhaust gas waste heat recovery heat exchanger of claim 3, wherein a bypass extends outwardly from the housing between an outlet of the preheater and an inlet of the vaporizer, the working fluid flow path extending through the bypass. 6. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the heat exchanger is operable to reduce a temperature difference between the flow of exhaust adjacent the exhaust inlet and the working fluid in the working fluid flow path adjacent to the exhaust inlet. 7. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the second portion of the working fluid flow path is contained within the housing. 8. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the first portion of the working fluid flow path extends within a first portion of the housing in counter-flow heat exchange relationship with the flow of exhaust, and wherein the second portion of the working fluid flow path extends within a second portion of the housing in parallel-flow heat exchange relationship with the flow of exhaust. 9. A heat recovery system comprising: a turbine;an exhaust gas waste heat recovery heat exchanger including a housing having a working fluid inlet, a working fluid outlet, an exhaust inlet, and an exhaust outlet;an exhaust flow path extending through the housing between the exhaust inlet and the exhaust outlet; anda working fluid flow path extending through the housing between the working fluid inlet and the working fluid outlet and having a first portion adjacent to the working fluid inlet and a second portion spaced apart from the working fluid inlet, a flow of working fluid along the first portion of the working fluid flow path being substantially counter to a flow of exhaust along the exhaust flow path adjacent to the first portion of the working flow path, the flow of working fluid along the first portion of the working fluid flow path that is substantially counter to the flow of exhaust is located within the housing to receive heat from the flow of exhaust traveling along the exhaust flow path, the flow of working fluid along the second portion of the working fluid flow path being substantially parallel to the flow of exhaust along the exhaust flow path adjacent to the second portion of the working fluid flow path; anda heat transfer circuit extending between a turbine outlet and the working fluid flow path. 10. The heat recovery system of claim 9, wherein heat transferred from the flow of exhaust traveling along the exhaust flow path to the working fluid traveling along the second portion of the working fluid flow path vaporizes and superheats the working fluid before the working fluid exits the housing through the working fluid outlet. 11. The heat recovery system of claim 9, wherein the housing substantially encloses a vaporizer operable to vaporize at least a portion of the flow of working fluid traveling along the second portion of the working fluid flow path, a superheater operable to superheat the flow of working fluid traveling along the second portion of the working fluid flow path, and a preheater positioned along the first portion of the working fluid flow path and being operable to transfer heat from the flow of exhaust to the flow of working fluid traveling along the first portion of the working fluid flow path before the working fluid enters the vaporizer. 12. The heat recovery system of claim 11, wherein heat is transferred from the exhaust flow to the working fluid flow in the vaporizer and the superheater before the exhaust flow enters the preheater. 13. The heat recovery system of claim 11, wherein a bypass extends outwardly from the housing between an outlet of the preheater and an inlet of the vaporizer, the working fluid flow path extending through the bypass. 14. The heat recovery system of claim 9, wherein the heat exchanger is operable to reduce a temperature difference between the flow of exhaust adjacent the exhaust inlet and the working fluid in the working fluid flow path adjacent to the exhaust inlet. 15. The heat recovery system of claim 9, wherein an integrated heat exchanger is positioned along the heat transfer circuit and includes a recuperator having a first pass and a second pass adjacent to the first pass for transferring heat from the working fluid traveling along the first pass to the working fluid traveling along the second pass;a condenser positioned adjacent to the recuperator to receive the working fluid from the first pass of the recuperator and having a first coolant flow pass for receiving heat from the working fluid traveling through the condenser to condense the working fluid traveling through the condenser;a housing enclosing the recuperator and the condenser and including a working fluid inlet, a working fluid outlet, a coolant inlet, and a coolant outlet, the first coolant flow pass extending through the housing between the coolant inlet and the coolant outlet. 16. The heat recovery system of claim 15, wherein the integrated heat exchanger includes a subcooler positioned adjacent to the condenser to receive the condensed working fluid from the condenser and having a second coolant flow pass, and wherein the housing encloses the subcooler. 17. The heat recovery system of claim 9, wherein the second portion of the working fluid flow path is contained within the housing. 18. The heat recovery system of claim 9, wherein the first portion of the working fluid flow path extends within a first portion of the housing in counter-flow heat exchange relationship with the flow of exhaust, and wherein the second portion of the working fluid flow path extends within a second portion of the housing in parallel-flow heat exchange relationship with the flow of exhaust.