Abstract: A liquid desiccant (LD)-based dehumidification system is provided for heating, ventilation, air conditioning and refrigeration (HVAC&R) systems. The LD-based dehumidification system includes a tank containing LD, a contact media device including media for disposition in a flow of air to be dehumidified and a sump disposed below the media to receive LD drained from the media, a pump and valve system to pump the LD from the tank to the contact media device to wet the media and from the sump to the tank, a heat exchanger through which LD, which is pumped from the sump to the tank, flows, a sensing system to sense one or more conditions of the LD and a controller to control the pump and valve system in accordance with a system status and the one or more conditions of the LD.

Abstract: Disclosed is a method of anodizing the interior surface of a heat transfer tube comprising placing a plurality of contact electrodes in electrical communication with, and along, an exterior surface of the heat transfer tube, inserting a counter electrode into an interior space of the heat transfer tube, providing an electrolytic solution to the interior space of the heat transfer tube, passing an electric current between the plurality of contact electrodes and the counter electrode through the electrolytic solution, forming an oxidation layer along the interior surface of the heat transfer tube, wherein the oxidation layer has an oxidation layer thickness that decreases along a length of the heat transfer tube, stopping the passage of the electric current, removing the electrolytic solution, and applying a sealing solution to a surface of the oxidation layer to form a sealed oxidation layer along the interior surface of the heat transfer tube.

Abstract: The disclosure provides a method for protecting a tube of a heat exchanger. The method includes inserting at least one portion of a non-ferrous tube into a hole of a tube sheet of the heat exchanger. The at least one portion of the non-ferrous tube is then rolled to radially expand the at least one portion. The at least one portion expands and forms a seal with the hole. A sleeve is then affixed onto an inner surface corresponding to the at least one portion of the non-ferrous tube.

Abstract: An anodization apparatus is disclosed that includes an anode holder adapted to hold a tube, such that the tube is adapted to receive electrolyte and the tube has a first surface profile formed on an inner surface of the tube. The anodization apparatus also includes a cathode holder adapted to hold a cathode concentrically in the tube, such that the cathode has a second surface profile formed an outer surface of the cathode and the outer surface faces the inner surface of the tube. The cathode holder and the anode holder are adapted to supply electric potential of a predetermined current density to the cathode and the tube, respectively, and a surface area ratio between the first surface profile and the second surface profile is maintained within a predetermined range to facilitate formation of a homogenized anodized coat on the second surface profile.

Abstract: A corrosion protection system is provided. The corrosion protection system comprises an electrical contact coupled to an apparatus. The electrical contact can apply a negative potential to the apparatus. The corrosion protection system comprises a sensor. The sensor detects moisture with respect to the apparatus. The corrosion protection system comprises a power supply. The power supply is electrically coupled to the electrical contact and provides a negative potential to the electrical contact in accordance with commands of a processor. The processor utilizes the power supply attached to the apparatus via the electrical contact to provide and apply the negative potential to the apparatus based on a sensor signal from the sensor. The sensor signal indicates the detection of the moisture by the sensor.

Abstract: A method and system of activating a fan for an air conditioning system is disclosed. Upon the sensing of rain in the proximity of the air conditioning system, such as a condenser, a fan is activated. The fan is configured to drive air and rain through the condenser. The fan can be configured to operate periodically or for a pre-set amount of time while rain is being sensed.

Abstract: Disclosed is a method of in-situ application of a conformal surface treatment to an internal surface of a heat exchanger of a chiller comprising providing a surface treatment solution to an inlet of the heat exchanger of the chiller, urging a flow of the surface treatment solution along a flowpath from the inlet past a plurality of heat transfer tubes to an outlet of the heat exchanger of the chiller, collecting the surface treatment solution, forming the conformal surface treatment along an internal surface of the first manifold, the plurality of heat transfer tubes, the second manifold, and a plurality of interconnections therebetween, stopping the flow of the surface treatment solution, and removing the surface treatment solution from the chiller.

Abstract: Disclosed is a method of anodizing the interior surface of a heat transfer tube comprising placing a plurality of contact electrodes in electrical communication with, and along, an exterior surface of the heat transfer tube, inserting a counter electrode into an interior space of the heat transfer tube, providing an electrolytic solution to the interior space of the heat transfer tube, passing an electric current between the plurality of contact electrodes and the counter electrode through the electrolytic solution, forming an oxidation layer along the interior surface of the heat transfer tube, wherein the oxidation layer has an oxidation layer thickness that decreases along a length of the heat transfer tube, stopping the passage of the electric current, removing the electrolytic solution, and applying a sealing solution to a surface of the oxidation layer to form a sealed oxidation layer along the interior surface of the heat transfer tube.

Abstract: A method and system of activating a fan for an air conditioning system is disclosed. Upon the sensing of rain in the proximity of the air conditioning system, such as a condenser, a fan is activated. The fan is configured to drive air and rain through the condenser. The fan can be configured to operate periodically or for a pre-set amount of time while rain is being sensed.

Abstract: A corrosion protection system is provided. The corrosion protection system comprises an electrical contact coupled to an apparatus. The electrical contact can apply a negative potential to the apparatus. The corrosion protection system comprises a sensor. The sensor detects moisture with respect to the apparatus. The corrosion protection system comprises a power supply. The power supply is electrically coupled to the electrical contact and provides a negative potential to the electrical contact in accordance with commands of a processor. The processor utilizes the power supply attached to the apparatus via the electrical contact to provide and apply the negative potential to the apparatus based on a sensor signal from the sensor. The sensor signal indicates the detection of the moisture by the sensor.

Abstract: A corrosion sensor including a cathodic metallic layer configured to allow moisture to pass therethrough, and an anodic metallic layer affixed to the cathodic metallic layer such that an air gap is formed therebetween.