IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0556614
(2012-07-24)
|
등록번호 |
US-8495859
(2013-07-30)
|
발명자
/ 주소 |
- Horek, Jon
- Wilson, Michael J.
- Voss, Mark
|
출원인 / 주소 |
- Modine Manufacturing Company
|
대리인 / 주소 |
Michael Best & Friedrich LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
35 |
초록
▼
The present invention provides 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, and
The present invention provides 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, 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.
대표청구항
▼
1. An exhaust gas waste heat recovery heat exchanger comprising: a housing having a first working fluid inlet, a second working fluid inlet, a first working fluid outlet, a second working fluid outlet for dispensing a superheated vapor, an exhaust inlet, an exhaust outlet, a preheater, and a superhe
1. An exhaust gas waste heat recovery heat exchanger comprising: a housing having a first working fluid inlet, a second working fluid inlet, a first working fluid outlet, a second working fluid outlet for dispensing a superheated vapor, an exhaust inlet, an exhaust outlet, a preheater, and a superheater;an exhaust flow path extending between the exhaust inlet and the exhaust outlet through the preheater and the superheater; anda working fluid flow path extending through the housing between the first working fluid inlet and the second working fluid outlet, the working fluid flow path including, a first portion that extends through the preheater from the first working fluid inlet to the first working fluid outlet, a flow of working fluid along the first portion of the working fluid flow path through the preheater receiving heat from the flow of exhaust traveling along the exhaust flow path, anda second portion that extends through the superheater from the second working fluid inlet to the second working fluid outlet and spaced apart from the first working fluid inlet, the flow of working fluid along the second portion of the working fluid flow path through the superheater receiving heat from the flow of exhaust traveling along the exhaust flow path;wherein the preheater and the superheater are integrally formed and enclosed within the housing such that each defines a section of a single heat exchanger;wherein the housing includes a wall extending from the exhaust inlet to the exhaust outlet, wherein heat transfer between the flow of exhaust and the flow of working fluid occurs through the wall, and wherein the exhaust inlet is located at a first end of the housing and the exhaust outlet is located at a second end of the housing opposite from the first end. 2. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the preheater is adjacent the first working fluid inlet such that the working fluid flows through the first working fluid inlet and discharges into the preheater. 3. The exhaust gas waste heat recovery heat exchanger of claim 2, wherein the superheater is adjacent the second working fluid outlet such that the working fluid flows through the superheater and is discharged from the superheater through the second working fluid outlet. 4. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the preheater is adjacent the exhaust outlet. 5. The exhaust gas waste heat recovery heat exchanger of claim 4, wherein the superheater is adjacent the exhaust inlet. 6. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the housing including the preheater and the superheater is a single integral housing. 7. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the first portion of the working fluid flow path is adjacent the first working fluid inlet and the exhaust outlet and the second portion of the working fluid flow path is adjacent the second working fluid outlet and the exhaust inlet. 8. 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 second working fluid outlet. 9. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the housing substantially encloses the superheater operable to superheat the flow of working fluid traveling along the second portion of the working fluid flow path, and the 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. 10. The exhaust gas waste heat recovery heat exchanger of claim 1, further comprising: a vaporizer; anda bypass extending outwardly from the housing between the first working fluid outlet and the inlet of the vaporizer, the working fluid flow path extending through the bypass. 11. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the exhaust inlet of the housing supplies exhaust to the superheater and the exhaust outlet of the housing vents the exhaust from the preheater. 12. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the wall at least partially defines the exhaust flow path and at least partially defines both the first and second portions of the working fluid flow path. 13. The exhaust gas waste heat recovery heat exchanger of claim 1, wherein the flow of working fluid through the first portion of the working fluid flow path is counter to the flow of exhaust through the exhaust flow path, and wherein the flow of working fluid through the second portion of the working fluid flow path is parallel to the flow of exhaust through the exhaust flow path. 14. The exhaust gas waste heat recovery heat exchanger of claim 13, wherein the wall separates the flow of exhaust from the flow of working fluid such that the flow of working fluid through the working fluid flow path is substantially in a non-cross-flow relationship with the flow of exhaust through the exhaust flow path. 15. A method of recovering waste heat from exhaust, the method comprising the acts of: directing a flow of exhaust along an exhaust flow path through a housing of an exhaust gas waste heat recovery heat exchanger between an exhaust inlet at a first end of the housing and an exhaust outlet at a second end of the housing opposite the first end of the housing, the housing including a wall extending from the exhaust inlet to the exhaust outlet;directing a flow of working fluid into a first working fluid inlet defined in the housing;directing the flow of working fluid along a working fluid flow path through a preheater arranged within the housing;transferring heat through the wall of the housing from the exhaust traveling along the exhaust flow path to the working fluid traveling through the preheater;removing the flow of working fluid from the housing through a first working fluid outlet defined in the housing;directing the flow of working fluid into a second working fluid inlet defined in the housing after having removed the flow of working fluid through the first working fluid outlet;directing the flow of working fluid along a second portion of the working fluid flow path that extends through a superheater arranged within the housing, wherein the preheater and the superheater are integrally formed and enclosed within the housing such that each defines a section of a single heat exchanger;transferring heat through the wall of the housing from the exhaust traveling along the exhaust flow path to the working fluid traveling through the superheater; andremoving the working fluid from the housing through a second working fluid outlet as a superheated vapor. 16. The method of claim 15, wherein transferring heat from the exhaust traveling along the exhaust flow path to the working fluid traveling along the second portion of the flow path includes vaporizing the working fluid adjacent an inlet to the second portion of the working fluid flow path. 17. The method of claim 15, wherein directing the flow of working fluid along the working fluid flow path includes directing the working fluid through the vaporizer to vaporize at least a portion of the flow of working fluid traveling along the working fluid flow path and the superheater to superheat at least a portion of the flow of working fluid traveling along the second portion of the working fluid flow path after directing the working fluid through the preheater. 18. The method of claim 15, wherein directing the flow of exhaust along the exhaust flow path through the housing includes transferring heat from the exhaust flow to the working fluid flow in the superheater before the exhaust flow enters the preheater. 19. The method of claim 15, wherein directing the flow of working fluid along the working fluid flow path includes directing the working fluid through the bypass extending outwardly from the housing and between the outlet of the preheater and the inlet of the vaporizer. 20. The method of claim 15, further comprising reducing a temperature difference between the exhaust flow and the working fluid flow in the preheater before directing the preheated working fluid from the first portion of the working fluid flow path to the second portion of the working fluid flow path. 21. The method of claim 15, wherein directing the flow of the working fluid along the working fluid flow path through the preheater and the superheater of the housing includes directing the flow of the working fluid through the housing including the preheater and the superheater as a single integral housing.
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