The disclosure discloses a cooling system and an automatic coolant injection method for the cooling system. The cooling system includes a heat exchanger; a converter; a liquid cooling pipeline; a coolant tank with a liquid-level sensor; an injection pump for injecting coolant from the coolant tank into the liquid cooling pipe; and a control unit. When liquid level of the coolant tank reaches an upper threshold, the injection pump injects coolant into the liquid cooling pipeline. When pressure of the coolant in the liquid cooling pipe reaches an upper static liquid pressure threshold, the control unit turns off the injection pump, and executes the turning-on and turning-off operations of the circulation pump with a preset circulation period. The circulation pump forces the coolant to circulate in the liquid cooling pipeline when being turned on.

The invention relates to a heat exchanger arrangement having at least one multipass heat exchanger, which comprises a first distributor (1), a second distributor (2) and at least one tubular diverter distributor (4) having a predefined tube cross-section (A.sub.U), and a tube arrangement (25) having a plurality of tubes (5) which are at least substantially parallel to one another and have a predefined tube cross-section (A.sub.R), through which a fluid—particularly, water—can flow and which are arranged in the tube arrangement (25) in columns with a predefined number of columns (n), wherein the first distributor (1) and the second distributor (2) are arranged at one end (A) of the heat exchanger arrangement and the diverter distributor (4) is arranged at the opposing end (B), and the tubes (5) extend from the one end (A) to the opposing end (B) and are connected to the diverter distributor (4) and the first or the second distributor (1, 2), and at least one vent opening (10) is arranged at a highest point (T), or at least in the vicinity of the highest point (T), of the diverter distributor (4) to equalize the pressure with the surroundings. In order to enable rapid filling of the heat exchanger arrangement with the fluid, a valve (11) is arranged in the at least one vent opening (10). When the valve (11) is fully opened, a flow cross-section (d) is clear for the passage of air, and the pipe cross-section (A.sub.U) of the diverter distributor (4) and the flow cross-section (d) of the valve (11) are the same as or greater than a minimum cross-section (D.sub.min), which is calculated from the product of the number of columns in the tube arrangement (25) and the pipe cross-section (A.sub.R) of the tubes (D.sub.min=n A.sub.R).

This reservoir tank has a tank body, an inflow pipe, a discharge pipe, and a filler port of cooling fluid in the tank body. The tank body has a first chamber and a second chamber, the filler port is provided to fill the second chamber with the cooling fluid, and an upper limit mark and a lower limit mark are displayed on the tank body. The first chamber and the second chamber communicate with each other through a lower communication path at a portion lower than the lower limit mark. Further, the upper communication path communicates a portion of the first chamber higher than the upper limit mark and a portion of the second chamber below the upper limit mark.

A method for dismantling a steam generator or heat exchanger, such as found in nuclear power plants, which steam generator or heat exchanger includes a plurality of primary circuit tubes with a contaminated inner surface and wherein one or more tubes are sealed with a plug at both end is provided, the method comprising a) opening one or both ends of each sealed tube by creating an opening in or removing, the plug (13); b) introducing a viscous polymer to cure inside the tube wherein the polymer fills the tube across the full tube cross-section at least at the tube ends, immobilizing contaminations in the filled portion inside the tube (11); c) curing the polymer, then detaching the tubes with cured polymer the detached tubes being sealed by the polymer d) sorting out the detached tubes with polymer.

The invention relates to a heat exchanger assembly with at least one multi-pass heat exchanger, comprising a first distributor (1) with a first connection part (1a) for connecting to a fluid line (9), a second distributor (2) with a second connection part (2a) for connecting to a fluid line (9), and at least one first deflection distributor (4), as well as a plurality of tube lines (5) through which a fluid, in particular water, can flow, wherein the first distributor (1) and the second distributor (2) are arranged at one end (A) of the heat exchanger assembly, the deflection distributor (4) is arranged at the opposite end (B) and the tube lines (5) extend from the one end (A) to the opposite end (B), and wherein the first connection part (1a) is arranged at a lowest point (T) or at least near to the lowest point (T) of the first distributor (1) and the second connection piece (2a) is arranged at a lowest point (T) or at least near to the lowest point (T) of the second distributor (2). In order to allow for the heat exchanger assembly to be quickly filled with the fluid and quickly emptied, a third connection part (3) is arranged on the first distributor (1) and/or on the second distributor (2) at a highest point (H) or at least near to the highest point (H) of the respective distributor (1 or 2), and at least one ventilation opening (10) is provided at a highest point (T) or at least near to the highest point (T) of the deflection distributor (4) for pressure equalisation with the environment.

This reservoir tank has a tank body, an inflow pipe, a discharge pipe, and a filler port of cooling fluid in the tank body. The tank body has a first chamber and a second chamber, the filler port is provided to fill the second chamber with the cooling fluid, and an upper limit mark and a lower limit mark are displayed on the tank body. The first chamber and the second chamber communicate with each other through a lower communication path at a portion lower than the lower limit mark. Further, the upper communication path communicates a portion of the first chamber higher than the upper limit mark and a portion of the second chamber below the upper limit mark.

The present disclosure provides a technique related to a cooler including a main channel in which an object to be cooled is attached to an upper surface thereof, and a structure which prevents air bubbles from entering the main channel. A cooler for cooling an object may include: a main channel in which coolant flows, wherein the object is attached to an upper surface of the main channel; and a sub channel bypassing the main channel, wherein a ceiling of the sub channel is higher than a ceiling of the main channel at a branch point between the main channel and the sub channel. Air bubbles trapped in the coolant flow into the sub channel having a higher ceiling height, thus they do not enter the main channel.

A closed-loop system and method for heating of target contaminant zones having environmental contaminants of concern present in the groundwater and the soil by thermal conduction, and subsequent enhancements of physical, biological and chemical processes to attenuate, remove and degrade contaminants in the target contaminant treatment zones, is disclosed. The system and method collects solar or other heat and transfers the heat via a closed-loop and a set of borehole exchangers to subsurface soil in the proximity of and/or directly to the target contaminant treatment zones. The target contaminant treatment zone may comprise contaminated soil, contaminated groundwater in an aquifer, or industrial waste comprising water and/or solids. Solar collectors or heat exchangers capturing waste heat from industrial processes may be used as the heat source.

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.

Disclosed is a method and a device for detecting a non-condensable portion of a medium, which has at least one condensable portion and is present at least partially in gaseous form, wherein in a first method step a temperature measuring device measures a temperature of the medium and a pressure measuring device measures a pressure of the medium, wherein in a second method step a ratio of the pressure to temperature is formed by means of an electronic measuring/operating circuit and this ratio is compared with a desired ratio of a desired pressure and a desired temperature, and wherein in a third method step the electronic measuring/operating circuit outputs a report in case of a minimum deviation of the ratio from the desired ratio.