A friction welding machine for radiating fins is disclosed, which mainly uses a moving unit to drive a friction joint unit to approach the plurality of radiating fins, and a friction rod provided in the moving unit rotates at a high speed to penetrate the radiating fins. The radiating fins are then welded together through the heat generated by high-speed rotation friction to achieve the purpose of improving the welding quality of the radiating fins and reducing the cost.

A friction welding machine for radiating fins is disclosed, which mainly uses a moving unit to drive a friction joint unit to approach the plurality of radiating fins, and a friction rod provided in the moving unit rotates at a high speed to penetrate the radiating fins. The radiating fins are then welded together through the heat generated by high-speed rotation friction to achieve the purpose of improving the welding quality of the radiating fins and reducing the cost.

A fill pack includes a first fill sheet defining an air intake edge, an air exit edge and an airflow axis extending between the air intake edge and the air exit edge. The first fill sheet defines a first flute section having a first inlet end, a first outlet end and a first peak extending between the first inlet end and the first outlet end. A second fill sheet defines a second flute section having a second inlet end, a second outlet end and a second peak extending between the second inlet end and the second outlet end. The first peak extends relative to the second peak such that a first flute portion defined by the first and second flute sections has a cross-sectional shape that changes between the first and second inlet ends and the first and second outlet ends.

A fill pack includes a first fill sheet defining an air intake edge, an air exit edge and an airflow axis extending between the air intake edge and the air exit edge. The first fill sheet defines a first flute section having a first inlet end, a first outlet end and a first peak extending between the first inlet end and the first outlet end. A second fill sheet defines a second flute section having a second inlet end, a second outlet end and a second peak extending between the second inlet end and the second outlet end. The first peak extends relative to the second peak such that a first flute portion defined by the first and second flute sections has a cross-sectional shape that changes between the first and second inlet ends and the first and second outlet ends.

An air transfer apparatus or enclosure having a heat exchanger attached to at least one side of the air transfer apparatus. The air transfer apparatus is an integral or a monolithic structure or enclosure where all internal cavities of the air transfer apparatus are formed from a single piece of material. The air transfer apparatus or enclosure includes a drain apparatus and a drain device. The drain apparatus includes a plurality of plates and the plurality of plates are positioned to make any collected fluid thereon collect in a sump of the air transfer apparatus.

A cooling tower system is disclosed. The cooling system includes a cooling tower; at least two make-up water inlet streams configured to supply water to the cooling tower; a blowdown stream configured to remove water from the cooling tower; at least one sensor monitoring water in each of the make-up water inlet streams; and a controller operably connected to the at least one sensor.

A cooling tower system is disclosed. The cooling system includes a cooling tower; at least two make-up water inlet streams configured to supply water to the cooling tower; a blowdown stream configured to remove water from the cooling tower; at least one sensor monitoring water in each of the make-up water inlet streams; and a controller operably connected to the at least one sensor.

Embodiments of a direct-drive fan system and a variable process control system are disclosed herein. The direct-drive fan system and the variable process control system efficiently manage the operation of fans in a cooling system such as a wet-cooling tower or air-cooled heat exchanger (ACHE), HVAC systems, mechanical towers or chiller systems.

In one aspect, a cooling tower system is provided that includes an evaporative heat exchanger, a sensor configured to detect a parameter of evaporative liquid distributed onto the evaporative heat exchanger, and an evaporative liquid treatment system. The cooling tower system further includes a controller having a normal operating mode wherein the controller operates the evaporative liquid treatment system to treat the evaporative liquid upon a determination of inadequate evaporative liquid quality based at least in part on the parameter of the evaporative liquid. The controller has a failsafe operating mode wherein the controller changes operation of the cooling tower upon a determination that the operation of the evaporative liquid treatment system is unable to remedy the inadequate evaporative liquid quality.

In one aspect, a cooling tower system is provided that includes an evaporative heat exchanger, a sensor configured to detect a parameter of evaporative liquid distributed onto the evaporative heat exchanger, and an evaporative liquid treatment system. The cooling tower system further includes a controller having a normal operating mode wherein the controller operates the evaporative liquid treatment system to treat the evaporative liquid upon a determination of inadequate evaporative liquid quality based at least in part on the parameter of the evaporative liquid. The controller has a failsafe operating mode wherein the controller changes operation of the cooling tower upon a determination that the operation of the evaporative liquid treatment system is unable to remedy the inadequate evaporative liquid quality.