Method air cooling oil, regenerative cooler for carrying out the method and the collector of this cooler

 

(57) Abstract:

Usage: in refrigeration, and more particularly to a method of cooling/ as well as recuperative coolers and collectors coolers/ in such systems in which the refrigerant is air, in particular, to methods of cooling oil. The inventive method of cooling oil includes an operation start of the cooler at low ambient temperatures, which is carried with the help of heat to the outer surface of the section of the cooler and subsequent feeding on heat-exchange surface sections cooler hot oil. When this oil pre circulates in a closed circuit with an external source of heat. Application of heat to the outer surface of the sections is carried out by conductive heating, pre-oil circulation lead by serial flow through all distributing and collecting manifolds sections bypassing the heat exchange surface, after completion of the preliminary oil circulation last served on the heat exchange surface directly from distributing and collecting manifolds of sections of the cooler. Regenerative cooler includes at least one of the nes collectors for one of the environments. Each collector has accordingly working connections for input or output medium, and further comprises a circulation pipe, and the entire cooler is equipped with one bypass line with a regulating gate valve body connected at one end to the circulation pipe distributing manifold of one of the sections, and the other end into the circulation pipe collecting collector is also one of the sections /single-cooler - to the same partition/. The collector includes a housing equipped with a pipe /collecting sewer-pipe to exit environment; distributing manifold coupling for inlet protection/ and heater. Additionally, the collector includes a circulation pipe connected to the bypass circuit, and the heater is made in the form of conductive element, the profiled shape of the manifold and mounted on its outer surface. 3 S. and 18 C.p. f-crystals, 9 Il.

The group of inventions is characterized by a single inventive concept relates to refrigeration, and more particularly to a method of cooling and regenerative coolers and collectors of such coolers) in such systems in which the refrigerant is air, in the particular case to spooa regenerative cooler, having at least one heat exchange section with distributing and collecting manifolds for oil [1] In this way there are no tools that provide in terms of start-up at low ambient temperatures guaranteed heating of the heat exchange sections, which in practice leads to thermal shock, to a significant increase of the resistance of the oil cavity and, accordingly, the oil pressure due to a sharp cooling to enroll in the cold section, the result are cases of depressurization sections and their failure. In this way the description of the operation of the start-up of the coolant in the low temperature environment is missing, so the technical result achieved by the proposed method, in this way obtained can not be.

There are also known methods of cooling oil through the feed air flow in the regenerative cooler, having at least one heat exchange section with distributing and collecting manifolds for oil, while cooler at low ambient temperatures is performed with the aid of heat to the outer surface of the sections of the cooler, and then feed on the heat exchange surface of the heated oil, will precede the way pre-circulation in a closed circuit carries out without a supply of oil in the reservoir, and the supply of heat lead by convective heat transfer between the outer surface of the sections and hot air supplied auxiliary fan through stand-alone heaters.

This method is the closest analogue.

Technical result achieved in the proposed method, in this way cannot be achieved, since the presence of Autonomous fans and heaters require large power consumption for very large heat loss to the environment, besides all this equipment complicates the design of the cooler.

The objective of the present invention to develop ways to provide effective and economical heating sections regenerative cooler and circulating oil at low ambient temperatures, so that in a short period of time to reliably run cooler oil with a minimum expenditure of energy, while ensuring long-term resource of his work.

The technical result achieved by the invention increase the operational reliability of the regenerative cooler and reduce energy consumption during its start-up in low ambient temperatures.

Dopolnitelnye fact, in the method of cooling oil through the feed air flow in the regenerative cooler having at least one heat exchange section with distributing and collecting manifolds for the oil, start the chiller at low ambient temperatures is performed with the aid of heat to the outer surface of the sections of the cooler and subsequent feeding on heat-exchange surface sections cooler hot oil, previously circulating in a closed circuit with an external source of heat; heat input to the outer surface of the sections of the cooler is carried out by conductive heating, pre-circulation lead by its flow through all distributing and collecting manifolds sections bypassing the heat exchange surface, after completion of the preliminary oil circulation serves on the heat exchange surface directly from the distributing reservoir sections of the cooler.

The same technical result in particular cases is achieved in that in the method of cooling oil, characterized by the above features, preliminary oil circulation lead by its sequential supply first through all the dealer, and then collecting all the collectors siouxie collectors sections; the oil flow in the collecting collectors start with the header of the section, with the distributing manifold which begin prior circulation of the oil; the oil flow in the collecting collectors start with a manifold that section in distributing manifold which complete the oil flow by distributing collectors; advanced oil circulation start when reaching the surface sections of the cooler temperature, satisfying the following condition:

tn.c.tm.20oC,

where:

tn.c. the surface temperature of the sections cooler in degrees Celsius;

tm. oil temperature in degrees Celsius;

pre-circulation oil finish when the temperature satisfying the following condition:

tm.tp.20oC

where:

tm. -oil temperature in the contour of the initial circulation in degrees Celsius;

tp.-working oil temperature at the inlet to the cooler;

pre-circulation oil finish step, initially for one group of sections, then the other.

Additional technical result is achieved in that in the method characterized by the features necessary for the main technical result of conductive heat lead by podvodem supply heat directly to the heat exchange surfaces of the sections of the cooler; conductive heat lead by heat to the pipes leading to the reservoir sections of the cooler, the temperature of the heater at the stage of preliminary oil circulation does not exceed 100-130oC.

Known regenerative coolers containing several sections, each of which has a heat exchange surface and adjacent to the opposite sides of the distributing and collecting manifolds for one of the environments, having respectively the working nozzles to enter the environment [2]

This cooler all the dealer (and collecting) collectors combined total of the dealer's (collecting) the pipeline, and the heating surface is made tubular, while inside collectors entered the electric heating elements.

To launch such a cooler in conditions of low ambient temperatures is possible only at great cost of electricity, as specified in the cooler heating collectors are by convective heat transfer between the oil heated by the immersed electric heating elements, and the housing of the collector, heating the heat transfer surface by convective heat transfer between the outer surface of the sections and the hot air, by submitting the current environment due to leakage of coolant and lack of insulation. Therefore, the technical result (increase operational reliability while reducing power consumption when running cooler at low ambient temperatures) is not reached.

Also known regenerative coolers containing one section consisting of a heat exchange surface and adjacent to the opposite sides of the distributing and collecting collector for one of the environments, respectively, operating connections for input and output [1]

This cooler on the number of essential features is the closest analogue.

The technical result (increase operational reliability while reducing power consumption when running cooler at low ambient temperatures) this cooler is not achieved.

The objective of this invention to design regenerative cooler, providing reliable operation with high resource if it needs multiple runs in low temperature environment.

The technical result achieved by this invention increase operational reliability while reducing rachocki the result of intensification of the process of heating.

The main technical result is achieved by the regenerative cooler containing at least one section comprising heat exchange surface and adjacent to the opposite sides of the distributing and collecting manifolds for one of the environments, respectively, operating connections for input and output environment, each collector section further comprises a circulation pipe, and the entire cooler is equipped with one bypass line with a regulating gate valve body connected at one end to the circulation pipe distributing manifold and the other end of the circulation pipe collecting collector of one of the sections. The same technical result in particular cases is achieved by the fact that at one end adjacent collectors, facing one another, is a work-pipe, and at the other end adjacent collector circulation, while these nozzles are communicated through the connecting pipelines, forming together with collectors and bypass lines are part of a closed loop pre-medium circulation with external heat source; distributing and collecting manifolds for circulating pipes which are connected the bypass line is tor this section; distributing and collecting manifolds for circulating pipes which are connected the bypass line, are the last dealer collector along the medium in a closed circuit, and a collecting manifold section having a first distributing manifold along the medium in a closed circuit.

Additional technical result is achieved in that the heat exchange surface is made in the form of a single plate-fin package of alternating flat and corrugated sheets; the packages are equipped with surface electric heaters, while between adjacent packages section provides a gap, and the heaters are installed on the external side walls of the packages in the specified clearances.

Famous collectors, comprising a housing, equipped with a pipe for input or output medium, and the heater [3]

The heater is made in the form of a system of channels connected to the heating medium, and operates only in the cool-down period and idle period start, so the technical result achieved by the invention, is missing.

Famous collectors regenerative cooler, comprising a housing equipped with a work patner collector.

The technical result achieved by the invention in that the collector is not provided, since the circulation along the manifold is not feasible.

The task of the invention to develop design collecting or distributing manifold for preliminary circulation environment along the manifold, bypassing the heat exchange surface when the runs at low ambient temperatures with the preliminary conductive heating body of the collector.

The technical result achieved by the invention is the provision of a preliminary medium circulation along the manifold, bypassing the heat exchange surface and providing a conductive heating body of the collector.

This technical result is achieved by the fact that the collector regenerative cooler, comprising a housing, equipped with a pipe for input or output medium, the collector further comprises a circulation pipe connected to the bypass line with the regulatory shut-off body, and the heater is made in the form of conductive element, the profiled shape of the manifold and mounted on its outer surface.

This technical result, in private locationy pipes are located on opposite ends of the manifold, in the conductive element is made in the form of a non-metal heating layer encased in a polymer shell.

In Fig. 1 shows a diagram of a closed loop operational and pre-oil circulation with the described regenerative cooler; Fig. 2 is a schematic representation of the three cooler with one bypass line; illustrates PP 2, 5, 13, 14 and 15 of the formula of the invention; Fig. 3 the same cooler, illustrating PP 2, 4, 13, 14 and 164 in Fig.4 schematically shows a two-piece cooler with two bypass lines, illustrating PP 3, 13, 14 formulas of the invention; Fig. 5 is a schematic representation of a four-section cooler with four bypass lines, additionally illustrating p. 8 claims, Fig. 6 shows a section of the regenerative cooler is a perspective view illustrating the position of surface heaters on the side walls of the package and on the outer surface of the collector, working and circulating pipes; Fig. 7 presents a perspective view of plate-fin package section of the cooler of Fig.8 shows a perspective view of the manifold cooler with profiled shape of the collector surface heater; Fig. 9 section a-a of Fig.section 1 (see Fig.1). The cooler may contain several sections, in particular, additional sections 2, 3 and 4 (see Fig.2, 3, 4, 5). Each section has a heat exchange surface 5, the dealer 6 and collecting 7 collectors. In turn, the dealer 6 collector has a working pipe 8 to enter the environment and circulation 9 collecting header 7, respectively, work the pipe 10 and the circulation 11. The cooler has at least one bypass line 12 with the regulatory locking body 13. The cooler may also have multiple bypass lines, in particular, 14, 15 and 16. The bypass line 12 is connected to the circulation pipe 9 distributing manifold 6 from one of the sections and the other end of the circulation pipe 11 collecting collector 7 one of the sections. At the same time, regulating the locking body 13 may be made in the form of valves with manual operation, either in the form of temperature controllers are various designs that automatically varies the flow of oil through the bypass line from zero to a maximum value depending on the oil temperature.

The described regenerative cooler (see Fig. 1) included in the cooling system oil (or other liquid medium, prone to solidification or freezing) system includes a pump 17 and 18 heat source can be a gas turbine engine bearings, blowers, compressors, etc). The pump 17 and line 19 is connected with a working pipe 8 to the inlet of the oil distributing manifold 6 and highway 20 (through 18) with a working pipe 10 collecting collector 7 for oil yield.

When performing multiple chiller it will be included in the same circulating system oil cooler. The difference will be only in specific cases, which will be connected to the line 19 and 20.

This system has a closed loop pre-circulation environment, including the highway 19 and 20, the source 18 of the heat pump 17, collectors 6, 7 and the bypass line 12.

The system has a closed loop of the working medium circulation, including highway 19 and 20, the source 18 of the heat pump 17, the heat-exchange surface 5, distributing and collecting manifolds 6,7.

Similar circuits will be and when multiple bypass lines. In multiple chillers (see 2, 3, 4 and 5) at one end adjacent collectors (or the dealer 6 or collecting 7) facing one another, is working pipe (or 8 to enter the environment, or 10 to exit environment), at the other end adjacent collector circulation 9 or 10. Work and the circulation pipe is connected to the s 12, 14, 15, 16 form part of a closed loop pre-medium circulation with external source 18 and heat pump 17. These pipes 21 with these same collectors 6 and 7 together with a heat exchange surface 5 sections 1,2,3,4 form part of the closed path of the working medium circulation with the source 18 and heat pump 17.

Fig.1 and 2 illustrate the options when the circulation pipes connected to the bypass line, belong to the same partition. In Fig. 3 illustrates a variant, when the circulation pipe 9 distributing manifold 6 section 3 is connected to the circulation pipe 11 collecting collector 7 section 1. Possible variant of the cooler with two bypass lines 12 and 14 (see Fig.4), where each bypass line connects the circulation pipe 9 distributing manifold 6 and the circulation pipe 11 collecting collector 7 of each of the sections 1 and 2. It is also possible four-section cooler with 4 bypass lines 12, 14, 15 and 16 (see Fig.5), where the sections are divided into 2 parallel groups, each of which consists of 2 sections.

Thus, distributing and collecting manifolds, to the circulation pipe which is connected a by-pass line, are poslednii this section (see Fig.2), or collecting manifold section having a first distributing manifold downstream environment in a closed loop pre-circulation (see Fig.3).

Sections 1, 2, 3 and 4 may consist of one plate-fin package 22, and from several packages (see Fig.6). Packages 22 are provided with surface heaters 23, made in the form of conductive element represents a non-metal layer 24 is enclosed in a polymer shell 25; a heater installed on an external side walls 26 of the package 22, and the gap 27 is provided between packages sections. Heaters can be mounted on the reservoir.

As was shown above, the heat exchange surface 5, mostly made in the form of a plate-fin packet (see Fig. 7) alternating flat 28 and arms 29 of the sheets forming the channels 30 (oil channels for the cooling medium (oil) and the channels 31 (air channels) for the cooling medium (air).

In this case, the regenerative cooler is made, as a rule, cross-accurate, and the feeder side of the second medium (usually air) collectors has not.

Possible embodiments of the regenerative tall with high thermal conductivity, for example, aluminum, its alloys, etc.

The work of the regenerative cooler.

Describes variant regenerative cooler when cooled environment (submitted to the collectors) is an oil and cooling medium air, while the bypass line is connected to the circulation path of cooling of the bearings of the gas turbine engine or heater.

The operating mode.

(Control stop valve 13 bypass lines 12, 14, 15 and 16 is closed).

Oil pumped from the oil tank (Fig.1 not shown) by pump 17 through line 19 is supplied to the source 18 of heat, which are the bearings of the gas turbine engine or compressor. Lubricated and cooled bearings and having absorbed the heat of friction, the heated oil is directed into the working conduit 8 to enter the environment distributing manifold 6 section 1 single-regenerative cooler (see Fig.1). From the distributing manifold 6 heated oil enters the heat exchange surface 5 in the oil channel 30 where it is cooled while passing through the air channels 31 of the cooling air pumped by the fan (not shown). The cooled oil flows into the collecting header 7 and through the working of patrol the P> Possible options scheme when the source 18 of heat is located on highway 20 to the suction line of the pump 17; operating mode cooling oil remains the same as described above.

In multiple-chiller (see Fig.2) the oil received in the distributing manifold 6, section 1. divided into 2 parts: one part is equal to approximately 1/3 of the total oil consumption, enters the heat exchange surface 5 of the section 1, and the second part, equal to about 2/3 of the oil flow through the circulation pipe 9 and the connecting pipe 21 enters the working pipe 8 distributing manifold 6, section 2, which, in turn, is again divided into 2 parts. Each of these parts is equal to about 1.3 oil consumption; thus one part enters the heat exchange surface 5 of the section 2, and the second through the circulation pipe 9 distributing manifold 6 of the section 2 and the connecting pipe 21 into the working tube 8 distributing manifold 6, section 3.

Oil, chilled in section 3, through collecting header 7 of this section, work the pipe 10 to exit environment, the connecting pipe 21 and the circulation pipe 11 enters the collecting header 7 section 2 where it is mixed with butter, chilled in section 2, and then through the servant of the collecting header 7 section 1, where it connects with butter, chilled in section 1, and the full flow of the cooled oil through the working tube 10 distributing manifold 7 section 1 is sent to the line 20 and then to the pump 17.

Similarly operate in the operating mode multiple chillers, the scheme of which is shown in Fig.3, 4 and 5. The total will be serial or parallel passage of oil through the heat transfer surfaces of all sections, bypassing the bypass line.

Run mode at low ambient temperatures.

(Before you start regulating the locking body 13 bypass lines 12, 14, 15 and 16 is open).

At idle the pump 17 and the lack of oil circulation include all surface heaters 23 and is heated section of the cooler to the temperature of the oil in the circuit. After this includes the pump, and begins to work the contour of the initial oil circulation. In this case, the oil pumped by the pump 17 through line 19, the source 18 heat is supplied to the working pipe 8 distributing manifold 6, section 1 (see Fig. 1) and then, bypassing the heat exchange surface 5 (a consequence of its large hydraulic resistance at low temperatures oil), is directed through the circus of the nozzle 10 of the same collector and highway 20 is returned to the pump 17.

In multiple coolers oil in the contour of the initial circulation flows bypassing the heat exchange surface 5 or sequentially through all of the distributing reservoir 6, the bypass line 12 and then through all the collecting reservoir 7(see Fig.2 and 3), or enters at the same time in the dealer's 6 and collecting 7 collectors of one section, then through the same collectors another section (see Fig. 4 and 5).

The oil circulating in the contour of the initial circulation, including the source 18 of heat, gradually heated, gradually heating the section of the cooler. With increasing oil temperature shut-off body 13 is gradually closed, directing all most of the oil from the distributing reservoir 6 on the heat exchange surface 5. After the oil temperature is equal to about her work is regulating a stop valve 13 is closed completely and all the oil from the distributing reservoir 6 is directed to the heat exchange surface 5 sections of the cooler, thereby terminated prior circulation of the oil and begins operating mode.

The design of the collector.

The collector can be either collecting or distributing; in the first case he has the current collector 7, comprising a housing 32 with a working pipe 10 to exit environment has advanced the circulation pipe 11. connected to the bypass line or connecting piping. Thus, a work 10 and the circulation nozzles 11 are located on opposite ends of the manifold 7.

The collector 7 is equipped with a heater 33, made in the form of electrically conductive element, the profiled shape of the manifold and mounted on its outer surface (if such a heater to straighten, it will be similar to the surface of the heater 23). Conductive element (see Fig.9) has the insulation layer 34 and the power supply 35 and made in the form of other non-metallic layer 24, for example, graphite encased in a polymer shell 25 (see prospectus "Heating element polymer" production-commercial firm "Mercure", Bronnitsy, Moscow region)

Distributing manifold 6 has the same device that collects the collector 7, and installed on the opposite side of the heat exchange surface 5 (see Fig.6).

The housing 28 of the manifold is made from a material with high heat conductivity such as aluminum.

On the roads leading to the reservoir may be t the Ana in the private version of its application in regenerative cooler with plate-fin surface, when cooled medium is oil, and the cooling air, and the oil circulates in a closed circuit with a source of heat. Because the collector can be distributes or collects, describes the work of both collectors together (see Fig.1, 8, 9).

The operating mode.

The heated oil (mainly from the circulation circuit having a source of heat) is supplied into the housing 32 of the distributing manifold, and then the channels 30 of the heat exchange surface, where it is cooled by an air stream passing through the channels 29. The cooled oil flows into the housing 32 collecting collector, and then to the consumer. In the particular case of the consumer is the source of heat (for example, the bearings of steam or gas turbine). In this mode, the heater 33 is disabled.

Regulating a stop valve 13 is closed and the oil bypass line 12 through the circulation pipe 9 is not supplied.

The mode of using the collector to start the regenerative cooler at low ambient temperatures.

Turns on the heater 33. Since the housing 32 of the manifold is made from a material with high heat conductivity, is their fast heating. Upon reaching the tempo of the St collector, this stop valve bypass line 13 is in the open position, and the heater 33 is turned off. Received in the socket 8 oil rushes to the circulation pipe 9, bypassing the heat exchange surface (since the latter has a high hydraulic resistance), then runs through the bypass line 12 and through the circulation pipe 11 enters the collecting header 7, where work through the pipe 10 to the consumer. Thus, the oil will circulate along the reservoir, increasing the efficiency of heating and of course heating section to a predetermined temperature, after which the locking body 13 is gradually closed and the reservoir is transferred to the operating mode.

The implementation of the method.

The described method of cooling oil is carried out in a regenerative cooler, which has one or more sections with distributing and collecting manifolds for oil while the oil is cooled by an air stream supplied to the regenerative cooler. This method provides for the operation of the start-up of the chiller at low ambient temperatures. In practice, such conditions can be created in the winter time, when the cooler is in non-insulated areas is ur (up to -60oC). This method requires the presence of the circulating closed circuit with an external source of heat. Implementation of the proposed method is examined on the example of executing the circulation of a closed loop in the form of systems of cooling oil supplied to the bearings of the gas turbine engine or heater operating at low temperatures (down to -60oC), i.e., in the winter time. When the engine is running (or heater) method is as follows (see Fig.1).

Oil is heated in bearings (source 18 heat) until t=60-120oC, using a pump 17 through line 19 enters the distributing manifold 6, and then on the heat exchange surface 5 where it is cooled to a predetermined temperature, and then collecting header 7, from line 20, the cooled oil through a pump 17 is returned to the bearings. The cooling air supplied to the heat exchange surface with the help of fans, adjusting capacity to achieve the desired cooling. Depending on the amount of oil and other production and thermal conditions of the regenerative cooler can be performed multiple. In this case (see Fig. 2, 3, 4, 5) entity x sections (serial or parallel), and cool air flow.

In the run mode regenerative cooler the method is as follows.

The run mode begins when the gas turbine engine or the compressor when the oil temperature is equal to 10-20oC, and the temperature of the regenerative cooler (its collectors, the surface of the heat exchanger), which is outdoors, can reach -60oC.

In this mode, the described method provides for the operation of pre-circulation of the oil through the feed through all distributing or collecting the collectors of all the sections (see Fig.2, 3, 4, 5) to bypass the heat exchange surface or through collecting and distributing manifolds one section (see Fig.1) in single run cooler, thus after completion of the preliminary oil circulation, the latter served on the heat exchange surface directly from the distributing reservoir sections of the cooler. This operation is performed using the bypass lines with regulating the locking body 13: when running cooler one-section through the bypass line 12 (see Fig. 1), when performing multiple chiller using bypass lines 12, 14, 15, 16 (see Fig. 2, 3, 4, 5).

Start mode start with the supply of t is in private cases, beginning with either heat directly to collectors, or to the heat exchange surface sections, or to both. At very low ambient temperatures are more conductive heating by heat to the pipes leading to the reservoir sections of the cooler.

In other words, the start mode start with on of those or other heaters, while the circulation loop is not enabled (motor or blower does not work). Heating of the surface sections of the cooler due to their implementation of materials with high thermal conductivity is intensively and soon after you will be satisfied with the condition

tn.c.tm.20oC,

where

tn.c. the surface temperature of the sections cooler in degrees Celsius;

tm. oil temperature in degrees Celsius.

In practice, this temperature is 10-15oC, and the temperature of the heaters does not exceed 100-130oC.

Then move to the pre-oil circulation, which begin simultaneously with the starting of the engine and supercharger. In practice, this operation is carried out as follows. Regulatory body 13 on all bypass lines 12,14,15,16 set in the "open" position, open the valve (not shown) on the highways 19,20 and oil about 20, again to the bearings is heated to a temperature satisfying the condition

tm.tp.20oC,

where

tm. the temperature of the oil in the circuit prior circulation in degrees Celsius;

tp. working oil temperature at the inlet to the chiller.

Depending on the layout of the sections of the oil circulation are either by its sequential supply first through all the dealer collectors, and then through all gathering collectors (see Fig.2, 3), or by parallel flow simultaneously in distributing and collecting manifolds sections (see Fig.4, 5).

The oil flow in the collecting collectors start either from a collector that section in the distributing manifold which complete the oil flow by distributing collectors (see Fig.2) or the oil flow in the collecting collectors start with a manifold that section in distributing manifold which start the oil flow by distributing collectors (see Fig.3).

Provides the option that the preliminary circulation completes the first step for one group of sections, then to the other (see Fig. 5). This technique is carried out, for example, by setting the regulating valve bodies in sections 1, 2 at a temperature of 50 + 10oC, and is the condition of tm. tp. 20oC, mode, start, end and begin normal operating mode.

1. Method of cooling oil through the feed air flow in the regenerative cooler having at least one heat exchange section with distributing and collecting manifolds for oil, with the start of the cooler at low ambient temperatures is performed with the aid of heat to the outer surface of the sections of the cooler and subsequent feeding on heat-exchange surface sections cooler hot oil, previously circulating in a closed circuit with an external heat source, characterized in that the supply of heat to the outer surface of the sections of the cooler is carried out by conductive heating, preliminary oil circulation lead by its flow through all distributing and collecting manifolds sections bypassing the heat exchange surface, after completion of the preliminary oil circulation last served on the heat exchange surface directly from the distributing reservoir sections of the cooler.

2. The method according to p. 1, characterized in that the pre-oil circulation lead by its sequential supply first through all the dealer, and then through all of the La lead by parallel flow simultaneously in distributing and collecting manifolds of sections.

4. The method according to PP.1 and 2, characterized in that the oil flow in the collecting collectors start with the header of the section, with the distributing manifold which begin prior circulation of the oil.

5. The method according to PP.1 and 2, characterized in that the oil flow in the collecting collectors start with the header of the section, with the distributing manifold which complete the oil flow by distributing collectors.

6. The method according to PP.1 to 3, characterized in that the preliminary circulation oils begin when the surface sections of the cooler temperature, satisfying the condition

tp.ctm20oWITH,

where tp.cthe surface temperature of the sections of the cooler,oC;

tmoil temperature,oC.

7. The method according to PP.1 to 3, characterized in that the preliminary circulation oil finish when it reaches temperature, satisfying the condition

tmtp20oWITH,

where tmthe temperature of the oil in the circuit prior circulation,oC;

tpthe temperature of the working oil at the inlet to the chiller.

8. The method according to PP.1 to 3, characterized in that the preliminary circulation oil finish step, the beginning is in the lead by applying heat directly to the distributing and collecting manifolds of sections of the cooler.

10. The method according to p. 1, characterized in that the conductive heat lead by heat directly to the heat exchange surfaces of the sections of the cooler.

11. The method according to p. 1, wherein the conductive heating of the lead through an additional supply of heat to the pipes leading to the reservoir sections of the cooler.

12. The method according to p. 1, characterized in that the temperature of the heater at the stage of preliminary oil circulation does not exceed 100 130oC.

13. Regenerative cooler containing at least one section comprising heat exchange surface and adjacent to the opposite sides of the distributing and collecting manifolds for one of the environments, respectively, operating connections for input and output medium, wherein each collector section further comprises a circulation pipe, and the entire cooler is equipped with at least one bypass line with a regulating gate valve body connected at one end to the circulation pipe distributing manifold section and the other end of the circulation pipe collecting collector is also one of the sections.

14. The cooler on p. 13, characterized in that one of the main collector circulation, these nozzles are communicated through the connecting pipelines, forming together with collectors and bypass lines are part of a closed loop pre-medium circulation with external heat source.

15. The cooler on the PP.13 and 14, characterized in that the distributing and collecting manifolds for circulating pipes which are connected the bypass line, are the last collector in the course of the environment in a closed loop pre-circulation and collector collects this same section.

16. The cooler on the PP.13 and 14, characterized in that the distributing and collecting manifolds for circulating pipes which are connected the bypass line, are the last dealer collector in the course of the environment in a closed loop pre-circulation and collecting manifold section having a first distributing manifold downstream environment in a closed loop pre-circulation.

17. The cooler on the PP.13 and 14, characterized in that the heat exchange surface is made in the form of at least one plate-fin package of alternating flat and corrugated sheets.

18. The cooler on the PP.13 and 14, characterized in that the packets are provided to the surface is established with representation on the outer side walls of the packages in the specified clearances.

19. Collector regenerative cooler, comprising a housing, equipped with a pipe for input or output medium, and a heater, wherein the collector further comprises a circulation pipe connected to the bypass line, and the heater is made in the form of conductive element, the profiled shape of the manifold and mounted on its outer surface.

20. Collector under item 19, characterized in that the working and ventilation pipes are located on opposite ends of the collector.

21. Collector under item 19, characterized in that the conductive element is made in the form of a non-metal heating layer encased in a polymer shell.

 

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