Mechanically-driven pulsating flow valve for heat and mass transfer enhancement

Apparatus for transferring mass and/or heat including a valve for a stream of fluid impinged upon a surface, the stream having a temporal jet velocity profile, the valve precisely pulsing and controlling the temporal jet velocity profile of the stream of fluid, the valve comprising:

• a valve body;
• a fluid stream inlet in the valve body;
• a fluid stream outlet in the valve body;
• a movable insert received within the valve body, the insert controlling flow of fluid as fluid passes from the fluid stream inlet to the fluid stream outlet, the insert having a flow passage of a shape and orientation to provide a desired duty cycle of the valve further comprising a plurality of interchangeable movable inserts for the valve body, the interchangeable movable inserts each having a flow passage of a shape and orientation to provide a desired duty cycle of the valve.

Apparatus including a valve for a stream of fluid impinged upon a surface, the stream having a temporal jet velocity profile, the valve precisely pulsing and controlling the temporal jet velocity profile of the stream of fluid, the valve comprising:

• a valve body;
• fluid stream inlet means on the valve body;
• fluid stream outlet means on the valve body;
• a rotatable insert valving member received within the valve body and rotatable about an axis of rotation, the insert valving member controlling flow of fluid as fluid passes from the inlet means to the outlet means, the insert valving member having a generally linear flow passage of a shape and orientation to provide a desired duty cycle of the valve and extending through the valving member insert along a line that is generally transverse to the axis of rotation.

Apparatus including:

• a valve for a stream of fluid impinged upon a surface, the stream having a temporal jet velocity profile, the valve precisely pulsing and controlling the temporal jet velocity profile of the stream of fluid, the valve comprising:
• a valve body;
• a fluid stream inlet in the valve body;
• a fluid stream outlet in the valve body;
• and
• a first movable insert received within the valve body and rotatable about an axis of rotation, the first movable insert controlling flow of fluid as fluid passes from the fluid stream inlet to the fluid stream outlet, the insert having a flow passage generally perpendicular to the axis of rotation and of a shape and orientation to provide a first desired duty cycle of the valve;
• and
• a plurality of additional movable inserts, the additional movable inserts each having a flow passage of a shape and orientation to provide a desired duty cycle of the valve.

Apparatus including:

• a plurality of movable inserts, the movable inserts each having a flow passage of a shape and orientation to provide a desired duty cycle of a valve in which they are received, the movable inserts being receivable in a valve for a stream of fluid impinged upon a surface, the stream having a temporal jet velocity profile, the valve precisely pulsing and controlling the temporal jet velocity profile of the stream of fluid, the valve comprising:
• a valve body;
• a fluid stream inlet in the valve body;
• a fluid stream outlet in the valve body;
• and
• a first movable insert received within the valve body and rotatable about an axis of rotation, the first movable insert controlling flow of fluid as fluid passes from the fluid stream inlet to the fluid stream outlet, the insert having a flow passage generally perpendicular to the axis of rotation and of a shape and orientation to provide a first desired duty cycle of the valve.

A rotary pulsating valve apparatus including:

• a movable insert, the movable insert having a flow passage of a shape and orientation to provide a desired duty cycle of a valve in which it is received, the movable insert being receivable in a valve for a stream of fluid impinged upon a surface, the stream having a temporal jet velocity profile, the valve precisely pulsing and controlling the temporal jet velocity profile of the stream of fluid, the valve comprising:
• a valve body;
• a fluid stream inlet in the valve body;
• a fluid stream outlet in the valve body;
• and
• the movable insert, wherein when the movable insert is received within the valve body and rotatable about an axis of rotation, the movable insert controls flow of fluid as fluid passes from the fluid stream inlet to the fluid stream outlet along a path that is transverse to the axis of rotation.