Filtration system and method of design
View Patent ↗A filtration system comprising at least one filter element, at least a first and a second filter media that are different to one another and are arranged in a parallel relationship, wherein fluid flow through the filtration system comprises a first fluid flow portion that flows through the first media and a second fluid flow portion that flows through the second media.
1. A filtration system comprising:
at least one filter element;
at least a first and a second filter media that are different to one another and are arranged in a parallel relationship, wherein the first media has a higher particulate removal efficiency than the second media, and the second media has a lower pressure loss across the filter media than the first media, and wherein fluid flow through the filtration system comprises a first fluid flow portion that flows through the first media and a second fluid flow portion that flows through the second media.
2. The filtration system according to claim 1 wherein each filter media is disposed in a respective filter element.
3. The filtration system according to claim 1 , wherein at least one filter element includes both the first and second filter media.
4. The filtration system according to claim 1 wherein the first media's performance against a first performance property is superior to that of the second media; and the second media's performance against a second performance property is superior to that of the first media.
5. The filtration system according to claim 1 wherein the first media has a longer life than the second media; and the second media has lower pressure loss after exposure to moisture than the first media.
6. The filtration system according to claim 1 , wherein the first media passes a filter life test, the second media does not pass a filter life test, and the filtration system passes a filter life test.
7. The filtration system according to claim 1 , wherein the first media takes a longer time to build to its maximum particle filtration efficiency than the second media; and the second media takes a shorter time to build to its maximum particle filtration efficiency than the first media.
8. The filtration system according to claim 1 , wherein the first media is a nano fibre polymer based media and the second media is a glass/cellulose blended media.
9. The filtration system according to claim 1 , wherein the first media is back-pulsed in operation and the second media is static in operation.
10. A method of optimising performance of a particulate filtration system, the method comprising:
providing at least one filter element;
providing at least a first and a second filter media that are different to one another; and arranging the first and second filter media in parallel, wherein the first media has a higher particulate removal efficiency than the second media, and the second media has a lower pressure loss across the filter media than the first media, and wherein fluid flow through the filtration system comprises a first fluid flow portion that flows through the first media and a second fluid flow portion that flows through the second media.
11. The method according to claim 10 , wherein the first media's performance against a first performance property is superior to that of the second media; and the second media's performance against a second performance property is superior to that of the first media.
12. The method according to claim 10 wherein the first media has a longer life than the second media; and the second media has lower pressure loss after exposure to moisture than the first media.
13. The method according to claim 10 wherein the first media passes a filter life test, the second media does not pass a filter life test, and the filtration system passes a filter life test.
14. The method according to claim 10 wherein the first media takes a longer time to build to its maximum particle filtration efficiency than the second media; and the second media takes a shorter time to build to its maximum particle filtration efficiency than the first media.
15. A gas turbine comprising an inlet for receiving air and a filtration system through which the air is filtered, the filtration system comprising
at least one filter element;
at least a first and a second filter media that are different to one another and are arranged in a parallel relationship, wherein the first media has a higher particulate removal efficiency than the second media, and the second media has a lower pressure loss across the filter media than the first media, and wherein fluid flow through the system comprises a first fluid flow portion that flows through the first media and a second fluid flow portion that flows through the second media.