There is described a novel cleaning device for a condenser of a chiller system comprising: a condenser provided with a cooling grid, said cooling grid comprising one or more fins; a dust extraction system configured to remove dust from the surface of the one or more fins of the grid and/or the condenser.

A heat exchange system includes a shell having an interior with an inlet and an outlet wherein a first fluid circuit is defined from the inlet, through a heat exchange volume within the interior of the shell, to the outlet. A tubesheet is mounted within the shell dividing between the heat exchange volume and a plenum of a second fluid circuit within the interior of the shell. A set of tubes extends through the heat exchange volume, a respective interior passage of each tube being in fluid communication with the plenum through a respective opening though the tubesheet. The second fluid circuit includes the plenum and interior passages of the tubes. A spray nozzle is mounted in the plenum of the second fluid circuit with a spray outlet directed toward the tubesheet for cleaning the tubesheet with a submerged impingement jet issued from the spray nozzle.

A robot is disclosed for cleaning the exterior of tubes of a heat exchanger. The robot comprises a lance for directing a jet of fluid into spaces between the tubes, a carriage for transporting the lance in a direction of travel parallel to axes of the tubes of the heat exchanger, and traction assemblies for engaging the tubes to enable the carriage to be advanced along the tubes, wherein the traction assemblies are each moveable relative to the carriage in a direction transverse to that of travel in order to change the track width of the robot.

A self cleaning filtering method and apparatus for a plate heat exchanger including: a suction pipe, centrally disposed within an inlet channel adapted for receiving a cooling medium therein for the plate heat exchanger; nozzles extending radially from, and in fluid communication with, the suction pipe, the nozzles spaced apart from each other; a low pressure chamber, external to the heat exchanger, abutting the pressure plate, the low pressure chamber in fluid communication with the inlet channel, and a section of the suction pipe extending into the low pressure chamber; a drain valve adapted to reversibly open a drain of the low pressure chamber; and a rotation mechanism controlling axial rotation of the suction pipe.

An automatic washing apparatus for a heat exchanger is proposed. The automatic washing apparatus is configured to recognize positions of tube holes through a camera, and to automatically wash the tube holes. The automatic washing apparatus is also configured to be able to automatically wash an external bundle and internal tubes of a heat exchanger in accordance with set operation patterns of an external washing module and an internal washing module, and to be able to reuse washing water used for washing a heat exchanger as washing water by reprocessing the washing water.

A heat exchanger cleaning device is provided. The cleaning device includes a drive motor configured to rotate a gearbox, a slip clutch and a support beam about a first axis. The support beam carries a thread rod, a second motor, and one or more carriage assemblies. The carriage assemblies move linearly as the second motor rotates the threaded rod. The carriage assemblies include a support tube for receiving an ultra-high pressure tube therethrough. The carriage assemblies adjust relative to the heat exchanger such that the UHP tube may be inserted through the support tube into a hole of the heat exchanger. Therein the UHP tube may be advanced to clean sediment from the heat exchanger tube.

A cooling device includes a refrigerant flow path provided in a propulsion system of a ship; an electric pump configured to cause a refrigerant or a cleaning medium to flow through the refrigerant flow path; and a control unit configured to control operations of the propulsion system and the electric pump. The control unit executes each of a plurality of operating modes including a first operating mode (normal operating mode) which drives the propulsion system and the electric pump and causes the refrigerant to flow through the refrigerant flow path, and a second operating mode (maintenance mode) which drives the electric pump without driving the propulsion system and causes the cleaning medium to flow through the refrigerant flow path.

A heat exchanger end cover integrated with a rubber ball cleaning apparatus is disclosed, including a ball collector and a booster pump which are arranged outside the heat exchanger end cover, and a ball-receiving filter screen arranged inside the heat exchanger end cover. The heat exchanger end cover is connected to a cooling water inlet pipe joint and a cooling water outlet pipe joint, the cooling water inlet pipe joint is provided with a water suction port and a ball-dispensing port, and the cooling water outlet pipe joint is provided with a water discharge port and a ball-receiving port.

An antimicrobial lighting system is used to reduce microbial growth on surfaces in or on air conditioning and/or heating equipment. In some examples, antimicrobial light within one or more antimicrobial wavelength ranges is applied to inactivate one or more microorganisms on target surface(s) within or on a packaged terminal air conditioner (PTAC). The antimicrobial light may include light within a first antimicrobial wavelength range and/or light within a second antimicrobial wavelength range. The antimicrobial lighting system may include an array of individually controllable antimicrobial light segments. An array controller may individually control activation of the one or more antimicrobial light segments based on the status information or commands received from a PTAC controller or from an external computing device.

Water-jet cleaning system and a method of cleaning a heat exchanger. The equipment includes a rotary tool having a lance with at least two degrees of freedom. The lance's movements relative to openings defined in the heat exchanger face plate are controlled via a smart indexing controller. The controller includes an electronic communication device that is specifically programmed to selectively activate various components of the rotary tool and a water delivery system. The programming utilizes an observed, learned, or uploaded pattern of the heat exchanger tube openings to selectively rotate the lance relative to the rotary tool's mounting assembly or linearly move the lance towards or away from the mounting assembly. The controller moves the lance to align a nozzle thereon with a selected opening in the face plate and then delivers a high pressure water jet therethrough.