A drive system for driving a fan in a wet cooling tower, wherein the fan has a fan hub and fan blades attached to the fan hub. The drive system has a high-torque, low speed permanent magnet motor having a motor casing, a stator and a rotatable shaft, wherein the rotatable shaft is configured for connection to the fan hub. The drive system includes a variable frequency drive device to generate electrical signals that effect rotation of the rotatable shaft of the motor in order to rotate the fan.

A drive system for driving a fan in a wet cooling tower, wherein the fan has a fan hub and fan blades attached to the fan hub. The drive system has a high-torque, low speed permanent magnet motor having a motor casing, a stator and a rotatable shaft, wherein the rotatable shaft is configured for connection to the fan hub. The drive system includes a variable frequency drive device to generate electrical signals that effect rotation of the rotatable shaft of the motor in order to rotate the fan.

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 heat exchanger may include a first container having a gas inlet, a liquid inlet, a gas outlet, and a liquid outlet. The gas inlet may flow a gas at a first temperature into the container while the liquid inlet introduces droplets of a liquid into the container at a second temperature. In the container, the liquid droplets may fall under the force of gravity while the gas flows through the container in a direction that is different from a direction of the spray of the liquid through the container. Accordingly, the liquid and the gas may come into direct contact within the first container and exchange heat. After the liquid and gas exchange heat, the liquid may leave the container through the liquid outlet and the gas may leave the container through the gas outlet.

An example of a system for use in collecting fluid from a gas stream includes one or more collection panels and a frame for arranging the panel(s). Each of the collection panel(s) may comprise an emitter electrode assembly member, comprising one or more emitter electrodes, physically attached to an electrically insulated from a fluid collection member comprising one or more collection electrodes. The frame may be sized and shaped to be disposed near a gas outlet or a duct. An example of a method for collecting fluid from a gas stream includes providing the collection panel(s) disposed in a path of the gas stream; providing the gas stream; generating and maintaining a voltage at the one or more emitter electrodes of each of the collection panel(s); and collecting an amount of the fluid from the gas stream with the one or more collection panels.

A heat exchanger apparatus includes at least one metal sheet with a corrugated surface, fabric covering at least a part of one surface of the at least one metal sheet to promote evaporation, and a wetting agent in the fabric to promote wetting of the fabric, the wetting agent also acting as an anti-microbial agent.

A heat exchanger apparatus includes at least one metal sheet with a corrugated surface, fabric covering at least a part of one surface of the at least one metal sheet to promote evaporation, and a wetting agent in the fabric to promote wetting of the fabric, the wetting agent also acting as an anti-microbial agent.

A hybrid heat pump system comprising a heat pump loop integrated with a hydronic loop. The hybrid heat pump system offers multiple modes of operation to provide increased versatility and improved performance. Each of the loops can operate independently. In addition, the loops can operate in conjunction with each other in both heating and cooling modes. Still further, the hydronic loop can provide a reheat function when the heat pump loop is operating in the cooling mode to provide improved dehumidification of the air delivered to the conditioned space. The heat pump loop may include a hot gas bypass functionality for capacity control and/or freeze protection. The hydronic heat exchanger and the space heat exchanger of the heat pump loop may be combined in a compact single slab construction with a slit fin preventing cross-conduction between the heat exchanger sections.

A hybrid heat pump system comprising a heat pump loop integrated with a hydronic loop. The hybrid heat pump system offers multiple modes of operation to provide increased versatility and improved performance. Each of the loops can operate independently. In addition, the loops can operate in conjunction with each other in both heating and cooling modes. Still further, the hydronic loop can provide a reheat function when the heat pump loop is operating in the cooling mode to provide improved dehumidification of the air delivered to the conditioned space. The heat pump loop may include a hot gas bypass functionality for capacity control and/or freeze protection. The hydronic heat exchanger and the space heat exchanger of the heat pump loop may be combined in a compact single slab construction with a slit fin preventing cross-conduction between the heat exchanger sections.