Methods for cleaning a NPP steam generator tube bundle. The methods characterized in that a hydrodynamic manipulator connected to a hoist is inserted into a vertical corridor inside a heat exchanger. The methods include taking preliminary measurements of the dose rate inside the steam generator, measuring eddy current signals and analyzing the signals received to assess the condition of the walls of heat exchange tubes and deposit thickness. The methods further include determining the coordinates of a cleaning sector and calculating cleaning time and modes, ejecting a high-pressure jet of water using at least one nozzle configured to rotate around the swiveling axis, and moving the hydrodynamic manipulator according to the coordinates of the cleaning sector with the water jet set at a feed pressure of 1000 to 1500 bar and a flow rate of 100 to 150 l/min and a simultaneous video monitoring of the cleaning zone.

A method for cleaning, sanitizing, and disinfecting commercial and residential HVAC system includes applying low pressure cleaning foam to heat-exchange coils of the HVAC system, the cleaning foam including one or more agents that break down organic and/or inorganic fouling dirt or debris, the foam removing and carrying away dirt or debris from the coils. Moving air, such as from the air handler of the HVAC system, pushes or draws the cleaning foam from the first side of the coils toward a second side, the cleaning foam and removed dirt or debris exiting the second side of the coils. The moving air and cleaning foam move co-currently in the same direction through spaces in the coils.

An apparatus for cleaning HVAC cooling coils comprises a supply and collection assembly having a housing defining an interior space for containing a quantity of cleaning solution. A pump has a pump inlet positioned to be in fluid communication with the cleaning solution and is operative to deliver the cleaning solution to a supply outlet of the supply and collection assembly. A vacuum source has a vacuum inlet positioned to be in fluid communication with an ullage space above the quantity of cleaning solution such that the vacuum source creates negative pressure in the ullage space during operation. A collection inlet is in fluid communication with the ullage space such that the cleaning solution is returned to the interior space through the collection inlet during operation of the vacuum source. A nozzle device is in fluid communication with the supply outlet via outlet piping so as to deliver the cleaning solution to a surface of an HVAC coil unit. A fluid return tool is in fluid communication with the collection inlet via return piping so as to collect used cleaning solution from the HVAC coil unit.

A method for cleaning, sanitizing, and disinfecting commercial and residential HVAC system includes applying cleaning foam to coils of the HVAC system, the foam including one or more agents that break down organic and/or inorganic fouling debris into particles, the foam removing and carrying away debris from the coils.

A method and system for the maintenance and operation of air-cooled heat exchangers in climactic extremes of hot and cold ambient air temperatures which includes the permanent installation of a plurality of spray tubes provided with spaced-apart nozzles positioned between the finned heat exchange tubes and longitudinally aligned within the region of the finned-tube pitch. In one mode of operation, the forced air fan is stopped and temperature-controlled pressurized water with an optional cleaning agent is discharged from the nozzles to dislodge dirt and debris from the finned surfaces while simultaneously cooling the hot process liquid. When high ambient air temperatures preclude the forced air fans from achieving the required cooling of the process liquid passing through the ACHE, refrigerated pressurized cooled water and compressed air in the form of a mist is discharged from the nozzles. When low ambient air temperatures would reduce the temperature of the process liquid to an unacceptable level, pressurized heated air is discharged from the nozzles. Temperature sensors and associated automated programmed control systems can advantageously be employed to adjust the volume and temperature of the respective fluids discharged through the spray nozzles, or the system can be manually controlled by an operator based upon the temperature and pressure of the process fluid discharged from the ACHE.

A device for cleaning surfaces, mobile, in particular for the cleaning of the cooling elements of an exchanger, including a truck for a nozzle-carrier rack, intended to be disposed in a movable manner facing the surface to be cleaned, carrying a nozzle-carrier rack, with one or more nozzles spraying the surface to be cleaned, and a guide system including, on the one hand, at least one guide profile on which the truck for a nozzle-carrier rack moves, acting as a path for the truck during its movement in the direction of the guide profile, and on the other hand, bearing members of the truck moving on the at least one profile, and wherein the at least one guide profile is rigidified by at least one rigidification beam, under elastic tension, rigidly connected in several discrete positions by fastening plates to the guide profile.

A heat storage system is provided that is capable of being manufactured at lower cost and has higher heat transmission efficiency. A heat storage system includes a heat storage material having a higher specific gravity in a solid phase than in a liquid phase, a heat storage tank for containing the heat storage material, a cooling side heat exchanger arranged at an upper section inside the heat storage tank and for cooling the heat storage material, a heating side heat exchanger arranged at a lower section inside the heat storage tank and for heating the heat storage material, and a wall surface heater for heating a side wall of the heat storage tank.

The present disclosure relates to a soot blower including: a lance tube which includes one end that reciprocally moves in one direction on a surface of an inlet port of a flow path of the tubular heat exchanger; a drive unit which is connected to the lance tube and reciprocally moves and rotates the lance tube in the one direction; a first nozzle which is connected to the one end of the lance tube and discharges steam to the inlet port; and a second nozzle which is disposed adjacent to the first nozzle and connected to the one end of the lance tube and discharges solid particles to the inlet port, and the present disclosure relates to a method of cleaning a tubular heat exchanger by using the soot blower.

A method for the automated cleaning of lamellar heat exchangers and other sensitive surfaces, a moving apparatus, preferably moved on rollers or skids, being moved up and down on a guide unit made up of one and preferably two guide rails, on which a support arm is mounted, on which at least one and preferably multiple spray nozzles are mounted in such a way that they are moved along with the guide unit via the moving apparatus with the aid of an additional drive unit via a roller or toothed wheel mounted on another end, a carrier gas, preferably compressed air, and a liquid, preferably water, as the spray agent being supplied through feed hoses at a pressure of at least 2 bar, the supplied water quantity being less than 1%, preferably less than 0.30%, of the supplied air quantity.

A radiator cleaning assembly includes a blowing tube having a tubular portion and a flattened fin portion facilitating the fin portion to be positioned adjacent to a radiator without damaging the radiator. The fin portion has an air hole extending into an interior of the blowing tube. A valve is integrated into the blowing tube and the valve is positioned on the tubular portion. The valve is positionable in an open condition to pass air into the blowing tube and the valve is positionable in a closed condition to inhibit air from passing into the blowing tube. An air hose is fluidly coupled to the valve and the air hose is fluidly coupled to a source of compressed air to deliver compressed air to the valve. The valve delivers the compressed air to the air hole in the blowing tube to dislodge dirt and debris from the radiator.