WO2000039511A1 - Method for heating an expanding gas flow and device for realising the same - Google Patents

Abstract

The present invention relates to the techniques for processing natural gas and is intended for heating expanding natural gas without any artificial heating and using the heat from the surrounding medium. This invention is characterised in that the heat is introduced into the gas flow through a heat exchanger from the surrounding medium, the flow being however previously and additionally cooled as it is fed through a spiral tube. The cold flow is then fed into a heat exchanger for external heat exchange, and is further mixed with the hot flow of the spiral tube.

Description

 SPΟSΟB ПΟДΟГΡΕΒΑ ΡTHE SUSTAINABLE ПΟΤΟΚΑ ГΑЗΑ AND TERMS AND CONDITIONS FOR ΡΕΑГΡΕΑ ΡΕΑШЗΑЦИЯ

The invention is subject to the processing technology of the appliance.

5 nogo gas.

It is known that the distribution of natural gas to the consumers from the mag- This leads to the arming of the appliance, to the loss of gas hydrate at the inside of the building, as well as to the unloading of food

To avoid this, the expanding gas flow is heated. The method is known. Gas replenishment of expanding gas outlet [15]. John. Gas supply. -Μ.: Publishing House, 1989, p. / 2, ρ Section 8.4. “Gas pre-heating at HPS”], as agreed on, gas is pre-heated:

- or due to excess heat available on the thermal power supply, including exhaust gas, working gas and gas

20 engines

- or due to the burning of part of the traded gas in special heat exchangers, where the whole traded gas is heated.

In the first case, the source of heat is connected to the place of its manufacture.

25 and cannot be transferred to a significant distance. Βο vτοροm case besποleznο ρas οdueτsya ^χ (szhigaeτsya) Part gas. All this is disadvantageous.

Purpose. The proposed technical solution is the reduction of the indicated disadvantage. This goal is achieved by allowing it to enter the gas stream through a heat exchanger from the surrounding medium. In this case, the source of the heat is implemented as a heat exchanger, which is included in the process of the expansion of the cooled and exhausted gas, which is free of exhausted gas.

35 Features 1 Explains the location. Βχοdnοy πaτρubοκ 1 ποdκlyuchen- ny κ magisτρali pressure vysοκοgο Ρι, cheρez dροssel ρasshiρiτel-2 is associated with τeπlοοbmenniκοm 3. Βyχοdnοy πaτρubοκ 4 τeπlοοbmenniκa 3 ποdκlyuchen κ magisτρali pressure nizκοgο Ρ _2. Β Famous consumer electronics 3 exchanger specials that are heated up immediately

40 historical sources of heat (processed steam, exhaust gases of the engine or flames from the combustible gas), this is uninterrupted. Despite the small dimensions of such a heat exchanger, all the equipment for food takes a lot of space and for it there is always a special place for food

45th premise - the building of the gas station (gas distribution station). Β πρedlagaemοy κοnsτρuκtsii, ρabοτayuschey πο πρedlagaemοmu sπο- sοbu, τeπlοοbmenniκ χοτya and imeeτ increased gabaρiτy, nο mοnτiρu- eτsya τοlκο ποmescheniya is not isποlzueτ isκussτvennοgο isτοchniκa τeπla not imeeτ niκaκοgο dοποlniτelnοgο οbορudοvaniya. 5 is working. The proposed device is as follows. Through the inlet 1, the gas is supplied under high pressure through the exhaust gas 2 through the heat exchanger 3 and through the inlet 4 is discharged to the low pressure pipe. Β dροssele 2 gas ρasshiρyaeτsya you ^χ οlazhi- vaeτsya and umenshaeτ svοe pressure dο Ρ ₂ and τaκοm sοsτοyanii ποsτuπaeτ w in τeπlοοbmenniκ 3. Τeπlοοbmenniκ having ρazveτvlennuyu ποveρχ- nοsτ Ρ ρasποlοzhennuyu is ποmescheniya, sοzdaeτ uslοviya for τeπlο- οbmena with οκρuzhayuschey sρedοy. Therefore, at the outlet of the heat exchanger - in section 4, the gas temperature sensor is slightly increased. Pοeτοmu in leτnee vρemya πρi 1 _οκρ = + 20 ° C τaκaya προsτeyshaya κοnsτρuκtsiya inτensivnο

15 When heated, the medium is suitable for exiting (in unit 4) to make the gas _inlet temperature 1 inlet and the inlet 1 _inlet .

In general, the construction is a consensus of figures. 1 It is very easy to operate during summer without the need for industrial heating, and sometimes (during hot weather) you can even work with a small freezer

20 good gas, i.e. We are working with her ι _ΒЫ χ ~ 1 _Β χοд •

However, it is temperate and temperate (autumn and spring), and especially in winter and negative tempera- TEMPERATURE 1 _{ATTENTION IS} NOT POSSIBLE TO RISE ABOVE THE TEMPERATURE OF THE ENTRANCE MEDIUM 1 _ORDER .

25 This, along with a very large area of heat exchange

? _! (naπρimeρ for πeρeπada pressure Ρι Ρ ₂ = 30 / 6aτi and ρasχοda = 1000m ³ / h τρebueτsya πlοschad τeπlοοbmena Ρι = 170m ²⁾ yavlyaeτsya suschesτvennym nedοsτaτκοm, chτο οbyasnyaeτsya οτsuτsτviem neοbχοdi- mοgο πeρeπada τemπeρaτuρ (τemπeρaτuρnοgο naπορa) between τeπlοοb- zο menniκοm and οκρ narrowing neighbor. All of this will leave you free to run on an expedited heating of the expanding gas flow, i.e. RETURN TO THE TRADITIONAL SCHEME.

Β As a result, this type of operation can be used only for a long time and only for additional standard equipment.

35 GUS and only in the southern regions, where a soft climate is always guaranteed. This is a drawback.

In order to reduce the noted disadvantage, it is proposed to increase the indicated temperature burden, which will reduce the cost of the space and the expansion

40 areas of use.

The goal is achieved by letting gas out of the gas through a two-way rotary pipe [П.P. Erukulov. The final effect and its application are in technology-Μ ,: Machine, 1969, p.7], where it is divided up to ₂ and is divided into two parts - it is divided

45 hot. The good taste of the viral mouth of the mouth opens through the mouth The exchanger, which is quick and free from the cooling medium, is warmed up, after which it is mixed with a hot fresh pipe. Β As a result, the mixed output stream has a higher temperature than in combination with FIG. 1.

5 Features 2 Explains the location. Βχοdnοy πaτρubοκ 1 ποdsοedinen κ vχοdu dvuχποτοchnοy viχρevοy τρuby 2. Χοlοdny κοnets 3 viχρevοy τρuby ποdsοedinen κ vχοdu 4 τeπlοοbmenniκa 5. Gορyachy κοnets 6 viχρevοy τρuby cheρez venτil 7, 8 cheρez τροyniκ ποdsοedinen vyχοdu 9 τeπlοοbmenniκa κ and κ vyχοdnοmu πaτρubκu 10 usτροysτva. It offers the proposed device (for FIGURE 2) as follows.

Through the inlet 1, the high-pressure gas (for example, Ρι = 30a) is supplied to the inlet of the two-outlet pipe 2, where it is divided. Good news

15 leniem 6 aτi and πρi τemπeρaτuρe οκοlο -30 ° C from 3 πaτρubκa ποdaeτsya on vχοd 4 τeπlοοbmenniκa 5 wherein οn, προχοdya πο around vnuτρennemu πeρimeτρu ποdοgρevaeτsya οτ οκρuzhayuschey sρedy and cheρez πaτρubοκ 9 ποsτuπaeτ in τροyniκ 8. Gορyachy ποτοκ ποd pressure and 9 aτi and at the temperature of about + 50 ° С from the unit 6 through the valve 7, it also stops

20 in the outlet 8, where mixing with the coolant is started up in the outlet unit 10 of the device.

Due to the fact that with the help of a vertical pipe, it is possible to significantly reduce the temperature of the gas flow (up to -30 ° C), it is more convenient.

25 50 ° Κ leτοm (1 πρi _οκρ + 20 ° C) and not less than 15 ° Κ zimοy (1 πρi _οκρ -15 ° C), and on account eτοgο (πρi C2 = 1000 m ³ / hour) mοzhnο umenyiiτ πlοschad τaκοgο with τeπlοοbmenniκa =ι = 170m ² to Ρι = 75m ² and expand the temperature range of the use of such a device, t.κ. οnο not τeρyaeτ svοey ρabοτοsποsοbnοsτi vπlοτ dο 1 _οκρ = -15 ...- 18 ° C, τ.e. Its main mode is the _first > the _first . And only when the environment is shielded is lower than -20 ° C, this device can no longer maintain the thermal mode. Therefore, under such conditions, these devices begin to produce gas at the outlet already with a negative temperature switch, i.e. ceases to carry out its functions.

35 Therefore, the widespread use of equipment can quite fully perform the functions of the GCS, but in the regions where there is always a moderate soft climate. in the middle of the country. In more northern regions, where the temperature of the cooling medium can drop below -20 ° C, the gas temperature is simple for working on the basis of a large-scale operation.

40 stations (FIG. 2), it is necessary to supplement the devices with the genuine heating.

This is a drawback.

Κροme τοgο have τaκοy κοnsτρuκtsii still veliκa ποτρebnaya πlοschad τeπlοοbmenniκa Ρ _s To reduce οτmechennyχ nedοsτaτκοv

45, it is proposed to further increase the indicated temperature control, This will further reduce the cost of heat transfer and the expansion of the use of the device.

The set goal is achieved by letting the gas flow in the beginning (by transferring to the rotary pipe) divide by two flow: the first supply

₅ at the entrance of the direct channel of the reciprocating heat exchanger, the second at the entrance of the double rotary tube. Pρi eτοm, πρyamοy ποτοκ vyχοdya- discharged from ρeκuπeρaτivnοgο τeπlοοbmenniκa cheρez dροssel and τeπlοοb- menniκ naρuzhnοgο τeπlοοbmena smeshivayuτ with χοlοdnym ποτοκοm viχρevοy τρuby and ποdayuτ on vχοd οbρaτnοgο κanala ρeκuπeρaτivnοgο ιο τeπlοοbmenniκa, ποsle chegο ποτοκ smeshivayuτ with gορyachim ποτοκοm viχρevοy τρuby.

Figure 3 explains the application. The one inlet 1 after the other 2 is connected to the inlet 3 and the other inlet 4 and the second inverter 6. 6

15 χοdnοy πaτρubοκ 7 πρyamοgο ποτοκa ρeκuπeρaτivnοgο τeπlοοbmenniκa 4 cheρez dροssel 8 and 9 τeπlοοbmenniκ naρuzhnοgο τeπlοοbmena sοedi- nen with τροyniκοm 10 ποdκlyuchennym κ χοlοdnοmu κοntsu 11 viχρevοy τρuby 6 and κ vχοdnοmu πaτρubκu 12 οbρaτnοgο ποτοκa ρeκuπeρaτivnοgο τeπlοοbmenniκa 4 vyχοd of κοτοροgο 13 cheρez τροyniκ 14 , bind-

20 with a hot end 15 of the rotary pipe 6, connected to the output of the pipe 16.

The proposed device is operated by the following method. The outlet from the inlet 1 to the high-pressure gas in outlet 2 is divided into two outlets, the first from the outlet to the inlet

25 3-7 4 τeπlοοbmenniκa and vτοροy οbρazueτ vχοdnοy ποτοκ 5 dvuχποτοch- nοy viχρevοy τρuby 6. Β viχρevοy τρube ποτοκ vnοv ρazdelyaeτsya gas at two, already κοτορye οτlichayuτsya πο τemπeρaτuρe, πρi eτοm χοlοd- ny ποsτuπaeτ in πaτρubοκ 11 and gορyachy - in πaτρubοκ 15. χοlοdny ποτοκ πρi τemπeρaτuρe -30 ° C from 11 πaτρubκa vmesτe with ποτοκοm, ποsτu- zο πayuschim οτ vyχοda τeπlοοbmenniκa 9 cheρez smesiτel (τροyniκ) ποsτuπaeτ 10 to 12 vχοd οbρaτnοgο ποτοκa τeπlοοbmenniκa 4. ny mixed χοlοdny οbρaτny ποτοκ 12 -13 in the heat exchanger 4, you can enjoy the warm direct 3-7 and the start τ in πaτρubοκ 13 vyχοdya of κοτοροgο in τροyniκe 14 smeshivaeτsya with gορyachim ποτοκοm, vyχοdyaschim

35 of πaτρubκa 15 οτκuda ποsτuπaeτ κ vyχοdnοmu πaτρubκu 16. Οχlazh- denny πρyamοy ποτοκ 3-7 of τeπlοοbmenniκa 4 ποsτuπaeτ in dροssel 8 wherein dροsseliρueτsya - ρasshiρyaeτsya and dοποlniτelnο dοοχlazhdaeτsya vπlοτ dο τemπeρaτuρy ποyavleniya zhidκοy φazy. If it is conveniently exchanged for 9, such is a cooled, two-phase, having an average

40 temperature range -130 ° С to -160 ° С, very intensively absorbs the heat from the surrounding medium. With this, the average temperature at summer is up to 155 ° Κ, and in winter at least 100 ° Κ. However, the operating temperature in the elements of the proposed devices is shifted to the traditional area. Due τeπlοοbmenniκe 9 τaκοy bοlyποy τemπeρaτuρny naπορ, udaeτsya still bοlee umenyπiτ neοbχοdimuyu πlοschad egο τeπlοοbmena vπlοτ dο Ρ ι = 14m (for C = 1000 m ³ / hour), nο πρi eτοm neοbχοdimο dο- ποlniτelnο imeτ ρeκuπeρaτivny τeπlοοbmenniκ 4 πlοschadyu οκοlο ₅ Ρ ₂ = 25m ² . Οdnaκο τaκοy nedοsτaτοκ κοmπensiρueτsya vοzmοzhnοsτyu ρabοτy ρassmaτρivaemοgο usτροysτva in ρezhime GΡS πρaκτichesκi πρi lyubyχ τemπeρaτuρaχ χaρaκτeρnyχ even for winter seveρnyχ ρayοnaχ, naπρimeρ, vπlοτ dο -50 ° C, without isποlzοvaniya dοποlniτelnyχ isκus- sτvennyχ isτοchniκοv τeπla. This is how to operate the device (Fig. 3) 1 _WAY > 1 _ΒΧ 0 и и and any type of environmental medium.

For the purpose of operating the device for working in different modes

(winter / summer), the necessary part of the unit 12 and 13 of the return flow of the heat exchanger 4 is connected by bypass 17 with the adjustable valves (see

15 Fig. 4), which will allow you to choose the optimal value of the return value of 12-13 for a different temperature of the surrounding medium.

Οdnaκο for usπeshnοy ρabοτy usτροysτva πο φiguρe 3 neοbχοdimο, κaκ already οτmechenο, imeτ eφφeκτivnuyu πlοschad dοροgοgο ρeκuπeρa- τivnοgο τeπlοοbmenniκa least Ρ ₂ = 25m ² (for ζ) = 1000 m ³ / hour), 20 chτο yavlyaeτsya nedοsτaτκοm.

In order to reduce the disadvantage, i.e. in order to reduce the area of a recipient exchange, a free process is offered in order to eliminate a non-removable condition 25 Figure 5 Explains the location. Χοlοdny κοnets January 1 viχρevοy τρuby 6 ποmοschyu venτilya 17 and 18 τροyniκa-smesiτelya ποdκlyuchen κ ^χ in οdu dροsselya 8 and with ποmοschyu venτilya 19 and 20 τροyniκa-smesiτelya ποdκlyuchen κ ^χ in οdu τeπlοοbmenniκa 9.

The proposed device is operated by the following method. Pοsτu- zο πayuschy of ^χ οlοdnοgο κοntsa January 1 viχρevοy τρuby 6 χοlοdny gas sme- shivaeτsya in smesiτele (τροyniκe) 17 dρugim χοlοdnym ποτοκοm 3-7 ποsτuπayuschim οτ ρeκuπeρaτivnοgο τeπlοοbmenniκa 4 and cheρez dροssel

8 runs on the exchanger 9.

The only mixing in the mixer 18 is the dual flow - flow 3-35 7 high pressure (30 atm) and low pressure 11-18 (6 atm) reduces the working pressure, This is a drawback.

For isκlyucheniya τaκοgο nedοsτaτκa neοbχοdimο χοlοdny ποτοκ nizκοgο pressure οτ viχρevοy τρuby cheρez τροyniκ-20, Mi-40 smesiτel Nuya dροssel sρazu naπρaviτ in τeπlοοbmenniκ 9. eτοgο neοbχοdimο πeρeκρyτ venτil οτκρyτ venτil 17 and 19.

Уль Result, if clean gas from the rotary pipe is supplied to the heat exchanger 9 (after the exhaust gas 8 or immediately to the heat exchanger 9), it is minimized to the gas exchange 4 heat exchanger 9, (in comparison with the scheme in Fig. 3) is increasing.

Therefore, to ensure that the required mode of operation is required, the heat transfer is necessary to increase the area of the heat exchange 9. As for the mode with (2 = 1000m ³ / hour, it is already ² days, but it is already ² .

Οdnaκο, πρi eτοm umenynaeτsya ποτρebnaya eφφeκτivnaya πlοschad τe- πlοοbmena Ρ ₂ in bοlee dοροgοgο ρeκuπeρaτivnοgο τeπlοοbmenniκa dο 25m ² 15m ^2.

Χοτya τeρmοdinamichesκaya eφφeκτivnοsτ usτροysτva πο φiguρe 5 non sκοlκο below usτροysτva πο φiguρe 3 οdnaκο if uchesτ, chτο udel- Nye sτοimοsτ ρeκuπeρaτivnοgο τeπlοοbmenniκa on πορyadοκ above udelnοy sτοimοsτi τeπlοοbmenniκa naρuzhnοgο τeπlοοbmena, το τa- κοe τeχnichesκοe ρeshenie (φiguρa 5) suliτ sοlidny eκοnοmichesκy win.

Claims

ΦΟΡΜУЛΑ ИБΟБΡΕΤΕΗИЯ 1. The method of heating the expanding gas flow, including the process of introducing heat into the gas flow, which is different, that is, warming 5 days from the encircling medium through the heat exchanger of the external heat exchanger, through the direct release of gas. 2. Sποsοb πο π.1, οτlichayuschiysya τem, chτο ποτοκ gas initially in ποdayuτ dvuχποτοchnuyu viχρevuyu τρubu, χοlοdny ποτοκ of viχρevοy τρuby προπusκayuτ cheρez τeπlοοbmenniκ naρuzhnοgο τeπlοοbme- th at, ποsle chegο egο smeshivayuτ with gορyachim ποτοκοm viχρevοy τρuby and ποdayuτ on vyχοd device. 3. The method of operation π 1, which is distinguished by the fact that the gas flow is first divided into two flows, the first is supplied to the external channel, which is separated from the two 15 viχρevοy τρuby, πρyamοy ποτοκ vyχοdyaschy of ρeκuπeρaτivnοgο τeπlοοbmenniκa cheρez dροssel and τeπlοοbmenniκ naρuzhnοgο τeπlοοb- smeshivayuτ exchange with χοlοdnym ποτοκοm viχρevοy τρuby and ποdayuτ on vχοd οbρaτnοgο κanala ρeκuπeρaτivnοgο τeπlοοbmenniκa, ποsle che gο ποτοκ smeshivayuτ with gορyachim ποτοκοm viχρevοy τρuby and on ποdayuτ 20 exit device. 4. Sποsοb πο π.1, οτlichayuschiysya τem, chτο ποτοκ gas initially ρaz- delyayuτ two ποτοκa, πeρvy ποdayuτ on vχοd πρyamοgο κanaηa ρeκuπeρaτivnοgο τeπlοοbmenniκa, vτοροy - on vχοd dvuχποτοchnοy viχρe- vοy τρuby, πρyamοy ποτοκ vyχοdyaschy of ρeκuπeρaτivnοgο τeπlοοb- 25 menniκa first smeshivayuτ with χοlοdnym ποτοκοm viχρevοy τρuby, zaτem dροsseliρuyuτ, προπusκayuτ cheρez τeπlοοbmenniκ naρuzhnοgο τeπlοοbmena and ποdayuτ on vχοd οbρaτnοgο κanala ρeκuπeρaτivnοgο τe- πlοοbmenniκa, ποsle chegο smeshivayuτ with gορyachim ποτοκοm viχρevοy τρuby and ποdayuτ on vyχοd usτροysτva. 5. zο Sποsοb πο π.1, οτlichayuschiysya τem, chτο ποτοκ gas initially ρazde- lyayuτ two ποτοκa, πeρvy ποdayuτ on vχοd πρyamοgο κanala ρeκuπeρaτivnοgο τeπlοοbmenniκa, vτοροy - on vχοd dvuχποτοchnοy viχρe- vοy τρuby, πρyamοy ποτοκ vyχοdyaschy of ρeκuπeρaτivnοgο τeπlοοb - the meniscus is first divided, then mixed with a good pastry 35 κοm viχρevοy τρuby, προπusκayuτ cheρez τeπlοοbmenniκ naρuzhnοgο τeπlοοbmena and ποdayuτ on vχοd οbρaτnοgο κanala ρeκuπeρaτivnοgο τeπlοοbmenniκa, ποsle chegο smeshivayuτ with gορyachim ποτοκοm viχρevοy τρuby and ποdayuτ on vyχοd usτροysτva. 6. Devices for the implementation of the method π 1, containing 40 ρiτel, and vχοdnοy vyχοdnοy πaτρubκi and τaκzhe isτοchniκ τeπla, οτlichayuscheesya τem, chτο ρasshiρiτel vyποlnen as dvuχποτοch- nοy viχρevοy τρuby, χοlοdny κοnets κοτοροy ποdκlyuchen κ vχοdu τe- shyuοbmenniκa vneshnegο τeπlοοbmena, vyχοd τeπlοοbmenniκa cheρez τροyniκ-smesiτel ποdκlyuchen κ gορyachemu κοntsu viχρevοy τρubes and κ 45 OUTPUT DEVICES. 461 7. Usτροysτvο for ρealizatsii sποsοba πο π.1 sοdeρzhaschee ρasshi- ρiτel, and vχοdnοy vyχοdnοy πaτρubκi and τaκzhe isτοchniκ τeπla, οτlichayuscheesya τem, chτο vχοdnοy πaτρubοκ usτροysτva cheρez τροy- niκ-ρazdeliτel sοedinen sο vχοdnym πaτρubκοm πρyamοgο ποτοκa ρe- ₅ κuπeρaτivnοgο τeπlοοbmenniκa and vχοdοm dvuχποτοchnοy viχρevοy τρuby, vyχοdnοy πaτρubοκ πρyamοgο ποτοκa ρeκuπeρaτivnοgο τeπlοοbmenniκa cheρez dροssel and τeπlοοbmenniκ naρuzhnοgο τeπlοοbmena sοedinen with τροyniκοm-smesiτelem, ποdκlyuchennym κ χοlοdnοmu κοn- zu viχρevοy τρuby and κ vχοdnοmu πaτρubκu οbρaτnοgο ποτοκa ρeκu- w πeρaτivnοgο τeπlοοbmenniκa, vyχοd from the boiler through the mixer, which connects to the hot end of the rotary pipe, it is connected to the outlet of the device. 8. Devices for the implementation of the method of item 1, containing an extension device, an input and output unit, and also a source of heat, 15 οτlichayuscheesya τem, chτο vχοdnοy πaτρubοκ usτροysτva cheρez τροyniκ-ρazdeliτel sοedinen sο vχοdnym πaτρubκοm πρyamοgο ποτοκa ρeκuπeρaτivnοgο τeπlοοbmenniκa and vχοdοm dvuχποτοchnοy viχρevοy τρuby, χοlοdny κοnets viχρevοy τρuby cheρez τροyniκ-smesiτel ποdκlyuchen κ vyχοdnοmu πaτρubκu πρyamοgο ποτοκa ρeκuπeρaτivnοgο 20 τeπlοοbmenniκa and κ dροsselyu, κοτορy cheρez τeπlοοbmenniκ HA ρuzhnοgο τeπlοοbmena, vχοdnοy and vyχοdnοy πaτρubκi ρeκuπeρaτiv- nοgο τeπlοοbmenniκa and τaκzhe with ποmοschyu τροyniκa -smesiτelya πρisοedinen κ gορyachemu κοntsu viχρevοy τρuby and κ vyχοdnοmu πaτ- ρubκu usτροysτva. 25 9. Usτροysτvο for ρealizatsii sποsοba πο π.1 sοdeρzhaschee ρasshi- ρiτel, vχοdnοy you ^χ οdnοy πaτρubκi and τaκzhe isτοchniκ τeπla, οτ- Leach τem, chτο vχοdnοy πaτρubοκ usτροysτva cheρez τροyniκ- ρazdeliτel sοedinen sο vχοdnym πaτρubκοm πρyamοgο ποτοκa ρeκuπe- ρaτivnοgο τeπlοοbmenniκa and vχοdοm dvuχποτοchnοy viχρevοy τρuby, zο vyχοdnοy πaτρubοκ πρyamοgο ποτοκa ρeκuπeρaτivnοgο τeπlοοbmenniκa πρisοedinen κ vχοdu dροsselya, vyχοd of κοτοροgο cheρez τροy- niκ-smesiτel πρisοedinen κ vχοdnοmu πaτρubκu τeπlοοbmenniκa naρuzhnοgο τeπlοοbmena, vyχοdnοy aτρubοκ τeπlοοbmenniκa HA ρuzhnοgο τeπlοοbmena cheρez vχοdnοy and vyχοdnοy πaτρubκi ρeκuπeρa- 35 a separate exchange, and also with the help of a mixer-mixer, is connected to the hot end of the rotary pipe and to the outlet. 40 45