Abstract: The present invention provides a booster apparatus (10) for entraining gas in a flowing second fluid. The booster apparatus comprises a booster housing (116) for receiving a fluid. The booster apparatus has at least one inlet (123) through which a first fluid passes to be entrained in the second fluid when the second fluid is flowing through the booster housing. The present invention also provides a booster assembly (12) comprising a booster apparatus (10) and a fluid motive mechanism such as a turbine unit (11).

Abstract: The present invention provides a booster apparatus (10) for entraining gas in a flowing second fluid. The booster apparatus comprises a booster housing (116) for receiving a fluid. The booster apparatus has at least one inlet (123) through which a first fluid passes to be entrained in the second fluid when the second fluid is flowing through the booster housing. The present invention also provides a booster assembly (12) comprising a booster apparatus (10) and a fluid motive mechanism such as a turbine unit (11).

Abstract: A turbine unit (11) adapted to be placed in a flowing fluid. The turbine unit (11) comprises a first turbine set (13) and a second turbine set (15) mounted within a passage (21) of a housing (19). The first turbine blade set (13) and a second turbine blade set (15) are set in opposed relation such that in operation a region between the two turbine blade sets (13, 15) has a lower pressure than the fluid pressure at an opening of the passage (21). The turbine unit (11) being used to generate power. The turbine units (FIGS. 8 to 11) can be abutted with each other such that they define a passage and each turbine unit comprises a driving turbine blade set before fluid passes to a pumping turbine blade set.

Abstract: A turbine unit (11) comprising a passage (23) through which a fluid may pass. Located within the passage (23) is a driving turbine blade set (25) upstream from a pumping turbine blade set (27) wherein the diameter of the pumping turbine blade is larger than the diameter of the driving turbine blade set. The driving turbine blade set and pumping turbine blade set are mounted in opposed relation whereby the turbine blade sets are in reversed orientation with respect to each other such that in simultaneous operation a region between the two turbine blade sets has a lower pressure than the fluid pressure at an opening of the passage. This induces a greater mass flow rate through the turbine unit than would otherwise be created by a pumping turbine blade set equal to or smaller in diameter than the driving turbine blade set.

Abstract: A turbine unit (11) comprising a passage (23) through which a fluid may pass. Located within the passage (23) is a driving turbine blade set (25) upstream from a pumping turbine blade set (27) wherein the diameter of the pumping turbine blade is larger than the diameter of the driving turbine blade set. The driving turbine blade set and pumping turbine blade set are mounted in opposed relation whereby the turbine blade sets are in reversed orientation with respect to each other such that in simultaneous operation a region between the two turbine blade sets has a lower pressure than the fluid pressure at an opening of the passage. This induces a greater mass flow rate through the turbine unit than would otherwise be created by a pumping turbine blade set equal to or smaller in diameter than the driving turbine blade set.

Abstract: A turbine unit (11) adapted to be placed in a flowing fluid. The turbine unit (11) comprises a first turbine set (13) and a second turbine set (15) mounted within a passage (21) of a housing (19). The first turbine blade set (13) and a second turbine blade set (15) are set in opposed relation such that in operation a region between the two turbine blade sets (13, 15) has a lower pressure than the fluid pressure at an opening of the passage (21). The turbine unit (11) being used to generate power. The turbine units (FIGS. 8 to 11) can be abutted with each other such that they define a passage and each turbine unit comprises a driving turbine blade set before fluid passes to a pumping turbine blade set.