DE102016106915A1 - heat exchangers - Google Patents

Abstract

The invention relates to a heat exchanger, in particular a three-media heat exchanger, and a method for operating a heat exchanger. The heat exchanger (1) comprises at least: - a container (2) defining a container internal volume (3); - At least a first coil (4) which is arranged in the container (2), wherein the first coil (4) for guiding a medium to be tempered (5) is provided and arranged; and - at least one second coil (6) disposed in the container (2) and spaced from the first coil (4), the second coil (6) being provided and arranged for guiding a tempering medium (7). The container interior volume (3) is at least partially filled with a liquid heat transfer medium (8) between the first coil (4) and the second coil (6). The liquid heat transfer medium (8) is a thermal oil. The heat exchanger and the method make it possible that ice formation in the heat exchanger is avoided. In addition, setting a temperature change in the heat exchanger is very simple and nevertheless possible as precisely and consistently as possible.

Description

The invention relates to a heat exchanger, in particular a three-media heat exchanger, and a method for operating a heat exchanger.

For cooling or heating a medium to be tempered heat exchangers are known. These comprise, if they are provided, for example, for cooling a medium to be tempered, regularly a so-called cold side on which a cooling medium flows and a so-called hot side, on which the medium to be tempered or to be cooled flows. The heat transfer takes place in these "two-media heat exchangers" directly from the hot side to the cold side.

There are also known as "three-media heat exchangers" in which a transfer medium or a heat transfer medium is provided between the hot side and the cold side. Such three-media heat exchangers are used, for example, for cooling drinks, for example, beer in the dispenser, wherein water is usually used as a heat transfer medium. In the water, two lines are separated from each other, with one of the two lines, a coolant and through the other of the two lines, the drink to be cooled flows. The water rests here in a container, for example a tank, through which the two lines are guided. In connection with the known three-medium heat exchangers, however, it has proven to be disadvantageous that the heat transfer medium, especially water, freezes rapidly during operation, whereby on the one hand, the cooling process is adversely affected, in particular difficult to control, and on the other Three-media heat exchanger can be damaged during heavy ice formation.

On this basis, it is an object of the present invention, at least partially solve the problems described with reference to the prior art. In particular, a heat exchanger and a method for operating a heat exchanger are to be specified, wherein ice formation in the heat exchanger is avoided. In addition, setting a temperature change in the heat exchanger should be very simple and nevertheless as precise and consistent as possible.

These objects are achieved by the features of the independent claims. Further advantageous embodiments of the solution proposed here are specified in the dependent claims. It should be noted that the features listed individually in the dependent claims can be combined with each other in any technologically meaningful manner and define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

• – einen Behälter, der ein Behälter-Innenvolumen definiert;
• – mindestens eine erste Rohrschlange, die in dem Behälter angeordnet ist, wobei die erste Rohrschlange zum Führen eines zu temperierenden Mediums vorgesehen und eingerichtet ist; und
• – mindestens eine zweite Rohrschlange, die in dem Behälter und beabstandet zu der ersten Rohrschlange angeordnet ist, wobei die zweite Rohrschlange zum Führen eines Temperier-Mediums vorgesehen und eingerichtet ist;

wobei das Behälter-Innenvolumen zwischen der ersten Rohrschlange und der zweiten Rohrschlange zumindest teilweise mit einem flüssigen Wärmeübertragungsmedium gefüllt ist und wobei das flüssige Wärmeübertragungsmedium ein Thermal-Öl ist. A heat exchanger according to the invention, in particular three-medium heat exchangers, comprises at least:

• A container defining a container internal volume;
• - At least a first coil, which is arranged in the container, wherein the first coil is provided for guiding a medium to be tempered and set up; and
• - At least a second coil, which is arranged in the container and spaced from the first coil, wherein the second coil for guiding a tempering medium is provided and arranged;

wherein the container interior volume between the first coil and the second coil is at least partially filled with a liquid heat transfer medium and wherein the liquid heat transfer medium is a thermal oil.

The thermal oil is preferably formed with a silicone oil or a silicone polymer. The use of the thermal oil as a heat transfer medium advantageously makes it possible for the heat transfer medium to remain (completely) liquid even in very low temperature ranges. Thus, unwanted ice formation in the heat exchanger can be avoided by the thermal oil. Preferably, the thermal oil is intended and arranged to remain (completely) liquid in a heat transfer medium temperature range of -100 ° C to + 260 ° C [degrees Celsius], especially from -70 ° C to + 160 ° C. Particularly preferably, the freezing point of the thermal oil is in the range of -120 ° C to -50 ° C, in particular at about -111 ° C. Most preferably, the thermal oil at -100 ° C has a (dynamic) viscosity of about 78.6 mPa · s [millipascal seconds]. Due to the fact that the thermal oil has a low viscosity at very low heat transfer medium temperatures, high heat transfer coefficients can be achieved in a particularly advantageous manner even at these temperatures.

Preferably, the heat exchanger is used to set a temperature change of the medium to be tempered. Particularly preferably, the heat exchanger is used to carry out the method presented here. This is preferred Temperature control medium liquid nitrogen (LIN). More preferably, the medium to be tempered is ammonia.

The proposed heat exchanger and the proposed method allow in an advantageous manner that a particularly simple, in particular without high control engineering effort, an exact setting a temperature change of the medium to be tempered in the first coil is possible. In this case, the temperature change of the medium to be tempered can be determined, in particular measured, between a first outlet and a first inlet of the first tube coil. The thermal oil and / or the homogenizing device allow a high and particularly uniform heat transfer coefficient along at least the first coil or the second coil, whereby the adjustment of the temperature change is advantageously simplified. A uniform or uniform heat transfer coefficient is ensured, in particular, by means of the thermal oil and / or the homogenizing device, avoiding local ice formation in the container internal volume, in particular at the first and / or second tube coil.

• – eine antreibbare Homogenisierungseinrichtung, die in dem Behälter angeordnet und zur Vergleichmäßigung einer Temperaturverteilung einer Wärmeübertragungsmedium-Temperatur des Wärmeübertragungsmediums in dem Behälter-Innenvolumen vorgesehen und eingerichtet ist.

According to an advantageous embodiment, it is proposed that the heat exchange further comprises:

• A drivable homogenizing device which is arranged in the container and is provided and arranged to equalize a temperature distribution of a heat transfer medium temperature of the heat transfer medium in the container interior volume.

The homogenizing device can be driven electrically and / or pneumatically. The homogenizing device preferably comprises an electric motor or is (actively) connected to an electric motor. The homogenizing device preferably comprises at least one pump, such as a gear pump or a jet pump, a rotor and / or a stirrer. Preferably, a drive motor connected to the homogenizing device is arranged outside the container, preferably on a container outer wall. The drive motor can be connected to the homogenizing device by means of a shaft, for example a spindle extension. The shaft can in this case penetrate a container wall, preferably a container bottom, and / or a container lid (fluid-tight).

According to a further advantageous embodiment, it is proposed that the homogenizing device comprises at least one agitator. Preferably, the homogenization device or the agitator is arranged or formed at the bottom of the container.

The homogenizer may move the heat transfer medium in the container interior volume. On the one hand, this has the advantage that ice formation due to the movement of the heat transfer medium is at least impeded and preferably prevented; on the other hand, the formation of local heat or cold esters and / or temperature stratifications of the heat transfer medium in the container interior volume can be avoided by the homogenizing device. Preferably, the heat transfer medium can be moved by means of the homogenization device with a (pre) determined flow rate. Particularly preferably, the homogenizing device is provided and arranged to move the heat transfer medium at a (pre) certain flow rate around the first and / or second coil and / or along the first and / or second coil. In this way, advantageously, the heat transfer coefficient and the convective heat transfer in the heat exchanger can be increased.

According to an advantageous embodiment, it is proposed that at least one first temperature sensor in the container and in contact with the heat transfer medium, is disposed between the first coil and the second coil and wherein at least one second temperature sensor is disposed in the container and in contact with the heat transfer medium, between a container wall and the first coil or the second coil. Preferably, at least two second temperature sensors are provided in the container, wherein one of the second temperature sensors between the first coil and the container (inner) wall and the other of the second temperature sensors between the second coil and the container (inner) wall are arranged. Preferably, the (all) temperature sensors and a drive motor of the homogenization device are connected to each other (active) and are particularly preferably connected to a (common or higher-level) control unit. In this case, the control unit can receive measurement signals from the temperature sensors and send control signals to the drive motor of the homogenization device.

According to an advantageous embodiment, it is proposed that a minimum distance between the first coil and the second coil is at least 2.5 cm [centimeter]. Preferably, the minimum distance is at least 5 cm, more preferably at least 10 cm or even at least 15 cm. The greater the distance between the first coil and the second coil, the better the advantages of the heat transfer medium can be utilized, since as the gap increases, direct interference between the first coil and the second coil will decrease. Preferably, the minimum distance is selected so that a direct or immediate heat transfer, for example, a heat conduction and / or thermal radiation, between the first coil and the second coil (almost completely) is avoided. The minimum distance between the first coil and the second coil advantageously facilitates adjusting the temperature change in the first coil, since heat radiation and heat conduction influences can be greatly reduced and it is possible that along the first coil almost the same (isothermal) or a uniform heat transfer medium temperature is present.

• a) Führen eines zu temperierenden Mediums durch mindestens eine erste Rohrschlange, die in dem Behälter angeordnet ist,
• b) Führen eines Temperier-Mediums durch mindestens eine zweite Rohrschlange, die in dem Behälter und beabstandet zu der ersten Rohrschlange angeordnet ist,
• c) Einstellen einer Temperaturänderung einer Medientemperatur des zu temperierenden Mediums zwischen einem ersten Einlass und einem ersten Auslass der ersten Rohrschlange,

wobei das flüssige Wärmeübertragungsmedium ein Thermal-Öl ist. According to a further aspect, a method for operating a heat exchanger is proposed, wherein a container internal volume of a container of the heat exchanger is at least partially filled with a liquid heat transfer medium and wherein the method comprises at least the following steps:

• a) guiding a medium to be tempered by at least one first tube coil, which is arranged in the container,
• b) passing a tempering medium through at least one second tube coil which is arranged in the container and at a distance from the first tube coil,
• c) setting a temperature change of a medium temperature of the medium to be tempered between a first inlet and a first outlet of the first coil,

wherein the liquid heat transfer medium is a thermal oil.

The process is preferably carried out in a heat exchanger proposed here. The indicated sequence of process steps a), b) and c) results in a regular course of the process. Individual or all method steps can be performed simultaneously, sequentially and / or at least partially in parallel.

For guiding or conveying the medium to be tempered by the first coil, additional or external flow generators, such as at least one (conveying) pump, and / or flow influencing means, such as at least one throttle, may be provided and fluidly connected to the first coil. For guiding or conveying the tempering medium through the second coil, in particular when the tempering medium is liquid nitrogen (LIN), there is a pressure difference between a high tempering medium pressure in a storage tank or a tempering medium. Memory and a low or lower tempering medium pressure at the outlet of the second coil can be used. Alternatively or cumulatively, additional or external flow generators, such as at least one (conveying) pump, and / or flow influencing means, such as at least one throttle, may be provided and fluidically connected to the second coil for guiding or conveying the tempering medium through the second coil be.

According to an advantageous embodiment, it is proposed that the heat transfer medium temperature of the heat transfer medium in the container interior volume is adjusted to a predetermined temperature. Preferably, for adjusting the heat transfer medium temperature to the predetermined temperature, a mass flow of the tempering medium is changed by the first coil. The mass flow of the temperature-control medium is preferably controlled as a function of the heat transfer medium temperature in the container internal volume, in particular as a function of the heat transfer medium temperature which is measured by means of the first temperature sensor. Preferably, the predetermined temperature in the container internal volume, in particular at least in an area between the first coil and the second coil is kept (almost) constant. More preferably, the predetermined temperature is between -40 ° C and + 40 ° C. Particularly preferably, a maximum temperature deviation of the heat transfer medium temperature in the container interior volume, in particular at least in a region between the first coil and the second coil, +/- 5 ° C, most preferably +/- 2 ° C or even + / -1 ° C. In other words, a control accuracy of the heat transfer medium temperature in the container internal volume is preferably at most +/- 5 ° C, more preferably at most +/- 2 ° C, or most preferably at most +/- 1 ° C.

• d) Sensorisches Erfassen einer Temperaturverteilung einer Wärmeübertragungsmedium-Temperatur des Wärmeübertragungsmediums in dem Behälter-Innenvolumen.

According to an advantageous embodiment, it is proposed that the method further comprises the following step d):

• d) Sensing a temperature distribution of a heat transfer medium temperature of the heat transfer medium in the container internal volume.

The sensory detection preferably takes place by means of the at least one first temperature sensor and the at least one second temperature sensor, which are arranged in the container and in contact with the heat transfer medium. Particularly preferably, the detected sensor data are evaluated by means of an evaluation unit of a (higher-level) control unit.

• e) Vergleichmäßigen der Temperaturverteilung der Wärmeübertragungsmedium-Temperatur des Wärmeübertragungsmediums in dem Behälter-Innenvolumen.

According to an advantageous embodiment, it is proposed that the method further comprises the following step e):

• e) Comparing the temperature distribution of the heat transfer medium temperature of the heat transfer medium in the container internal volume.

Preferably, a homogenizing device arranged in the container serves to equalize the temperature distribution of the heat transfer medium temperature. Particularly preferably, the homogenization device is operated as a function of the detected temperature distribution and / or controlled by the (higher) control unit. In particular, to homogenize the temperature distribution, the homogenizing device is operated as long as a temperature difference between the first temperature sensor and the second temperature sensor is detected. A rotational speed of the homogenizing device and / or a drive motor operatively connected to the homogenizing device can be predetermined by the control unit as a function of the size of the temperature difference between the first temperature sensor and the second temperature sensor. In this case, the speed can be increased when the temperature difference increases.

The details, features and advantageous embodiments discussed above in connection with the heat exchanger can accordingly also occur in the method presented here and vice versa. In that regard, reference is made in full to the statements there for a more detailed characterization of the features.

In another aspect, there is proposed use of a thermal oil as a heat transfer medium in a three-media heat exchanger in a manufacturing process of a pharmaceutical product or a plastic product. Preferably, liquid nitrogen is used as the tempering medium in the three-medium heat exchanger. More preferably, ammonia is used as medium to be tempered.

The details, features and advantageous embodiments discussed above in connection with the heat exchanger and / or the method can accordingly also occur with the use presented here and vice versa. In that regard, reference is made in full to the statements there for a more detailed characterization of the features.

• – einen Behälter, der ein Behälter-Innenvolumen definiert;
• – mindestens eine erste Rohrschlange, die in dem Behälter angeordnet ist, wobei die erste Rohrschlange zum Führen eines zu temperierenden Mediums vorgesehen und eingerichtet ist;
• – mindestens eine zweite Rohrschlange, die in dem Behälter und beabstandet zu der ersten Rohrschlange angeordnet ist, wobei die zweite Rohrschlange zum Führen eines Temperier-Mediums vorgesehen und eingerichtet ist; und
• – eine antreibbare Homogenisierungseinrichtung, die in dem Behälter angeordnet und zur Vergleichmäßigung einer Temperaturverteilung einer Wärmeübertragungsmedium-Temperatur eines flüssigen Wärmeübertragungsmediums in dem Behälter-Innenvolumen vorgesehen und eingerichtet ist;

wobei das Behälter-Innenvolumen zwischen der ersten Rohrschlange und der zweiten Rohrschlange zumindest teilweise mit dem flüssigen Wärmeübertragungsmedium gefüllt ist. Bevorzugt ist das flüssige Wärmeübertragungsmedium ein Thermal-Öl. To solve the stated objects, a heat exchanger, in particular a three-media heat exchanger, can serve (alternatively or cumulatively), at least comprising:

• A container defining a container internal volume;
• - At least a first coil, which is arranged in the container, wherein the first coil is provided for guiding a medium to be tempered and set up;
• - At least a second coil, which is arranged in the container and spaced from the first coil, wherein the second coil for guiding a tempering medium is provided and arranged; and
• A drivable homogenizing device disposed in the container and provided and arranged to equalize a temperature distribution of a heat transfer medium temperature of a liquid heat transfer medium in the container internal volume;

wherein the container interior volume between the first coil and the second coil is at least partially filled with the liquid heat transfer medium. Preferably, the liquid heat transfer medium is a thermal oil.

• a) Führen eines zu temperierenden Mediums durch mindestens eine erste Rohrschlange, die in dem Behälter angeordnet ist,
• b) Führen eines Temperier-Mediums durch mindestens eine zweite Rohrschlange, die in dem Behälter und beabstandet zu der ersten Rohrschlange angeordnet ist,
• c) Einstellen einer Temperaturänderung einer Medientemperatur des zu temperierenden Mediums zwischen einem ersten Einlass und einem ersten Auslass der ersten Rohrschlange,
• d‘) Bewegen des flüssigen Wärmeübertragungsmediums in dem Behälter-Innenvolumen, insbesondere mittels einer (vorstehend beschriebenen) Homogenisierungseinrichtung.

To achieve the stated objects, a method for operating a heat exchanger may also be used (alternatively or cumulatively), wherein a container internal volume of a container of the heat exchanger is at least partially filled with a liquid heat transfer medium and wherein the method comprises at least the following steps:

• a) guiding a medium to be tempered by at least one first tube coil, which is arranged in the container,
• b) passing a tempering medium through at least one second tube coil which is arranged in the container and at a distance from the first tube coil,
• c) setting a temperature change of a medium temperature of the medium to be tempered between a first inlet and a first outlet of the first coil,
• d ') moving the liquid heat transfer medium in the container interior volume, in particular by means of a homogenizing device (described above).

The above in connection with the heat exchanger and the method in which always a thermal oil is used as a heat transfer medium is discussed details, features and advantageous embodiments may accordingly also occur in the heat exchanger presented here with a drivable homogenizer and the method proposed here, and vice versa. In that regard, reference is made in full to the statements there for a more detailed characterization of the features.

According to a further aspect, in particular, a use of a drivable homogenizing device is proposed, which is arranged in a container of a (three-media) heat exchanger, wherein a container internal volume of the container between a first coil and a second coil at least partially with a liquid heat transfer medium is filled to equalize a temperature distribution of a heat transfer medium temperature of the heat transfer medium in the container internal volume of the container and for generating a (predetermined) flow rate of the heat transfer medium in the container internal volume. In this case, the homogenizing device preferably comprises at least one agitator. More preferably, the (predetermined) flow rate of 2 m / s to 25 m / s [meters per second], more preferably from 10 m / s to 20 m / s.

The invention and the technical environment will be explained in more detail with reference to the figures. It should be noted that the invention should not be limited by the embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and / or findings from other figures and / or the present description. They show schematically:

1 : A sectional view of a heat exchanger according to the invention.

1 schematically shows a sectional view of a heat exchanger according to the invention 1 who has a container 2 , a first pipe coil 4 and a second coil 6 includes. The container 2 defines a container internal volume 3 that between the first coil 4 and the second coil 6 with a liquid heat transfer medium 8th is filled. In the embodiment shown, the liquid heat transfer medium 8th a thermal oil.

The first coil 4 is in the container 2 arranged and for guiding a medium to be tempered 5 provided and furnished. For this purpose, at least the first inlet 14 and / or the first outlet 15 the first coil 4 be provided with a connecting element (not shown here), in particular a connecting piece or a pipe connection, which is explicitly or exclusively associated with the (respective) medium to be tempered. If, for example, ammonia as medium to be tempered by the first coil 4 be guided or promoted, so the first coil can 4 by way of example at least at the first inlet 14 and / or at the first outlet 15 be provided with an external thread as a connecting element (not shown here), wherein the external thread is designed with a specific, for example normalized, outer diameter, which is provided explicitly or exclusively for connecting an ammonia source or an ammonia consumer. This can prevent that to the first coil 4 a medium source is connected to a medium for which the first coiled tube 4 not intended and furnished. In addition, it can be prevented that a consumer to the first coil 4 connected, which is not intended and furnished for the medium carried therein or even could be damaged by this medium.

The second coil 6 is in the container 2 and spaced to the first coil 4 arranged. The second coil 6 is for guiding a tempering medium 7 provided and furnished. For this purpose, at least the second inlet 16 and / or the second outlet 17 the second coil 6 be provided with a connecting element (not shown here), which explicitly or exclusively the (respective) tempering medium 7 assigned. As tempering medium 7 becomes the heat exchanger 1 here for example liquid nitrogen (LIN) at the second inlet 16 fed.

As shown 1 is in the container 2 a drivable homogenizer 9 arranged. The homogenizer 9 is for equalizing a temperature distribution of a heat transfer medium temperature of the heat transfer medium 8th in the container interior volume 3 provided and furnished. The homogenizer 9 here includes an example of an agitator 10 in that, for example, by a drive motor 20 can be driven rotationally.

The speed of the agitator 10 or the drive motor 20 can in response to a detected temperature distribution of the heat transfer medium temperature of the heat transfer medium 8th to be controlled.

For detecting the temperature distribution of the heat transfer medium temperature of the heat transfer medium 8th in the container interior volume 3 are a first temperature sensor 11 and two second temperature sensors 12 in the container 2 and in contact with the heat transfer medium 8th arranged. Here is the first temperature sensor 11 between the first coil 4 and the second coil 6 arranged. The second temperature sensors 12 are each between a container wall 13 and the first coil 4 or the second coil 6 arranged. When a temperature difference between the first temperature sensor 11 and one or both second temperature sensors 12 and / or between the two second temperature sensors 12 is measured, a comparison of the temperature distribution of the heat transfer medium temperature of the heat transfer medium 8th in the container interior volume 3 by a corresponding activation of the homogenizing device 9 be achieved. This can be achieved that unwanted layers and / or heat or Kältenester the heat transfer medium 8th in the container interior volume 3 be avoided. This contributes to the heat transfer medium temperature of the heat transfer medium 8th in the container interior volume 3 can be adjusted to a predetermined, uniform temperature.

Here, a heat exchanger and a method for operating a heat exchanger are specified, which at least partially solve the problems described with reference to the prior art. In particular, the heat exchanger and the method make it possible to avoid ice formation in the heat exchanger. In addition, setting a temperature change in the heat exchanger is very simple and nevertheless possible as precisely and consistently as possible.

LIST OF REFERENCE NUMBERS

1

 heat exchangers

2

 container

3

 Container internal volume

4

 First pipe coil

5

 To be tempered medium

6

 Second pipe coil

7

 Tempering medium

8th

 Heat transfer medium

9

 homogenizing

10

agitator

11

First temperature sensor

12

Second temperature sensor

13

container wall

14

First inlet

15

First outlet

16

Second inlet

17

Second outlet

18

minimum distance

19

drain valve

20

drive motor

Claims (10)

Heat exchanger ( 1 ), comprising at least: - a container ( 2 ), which has a container internal volume ( 3 ) Are defined; At least one first coil ( 4 ) contained in the container ( 2 ), wherein the first coil ( 4 ) for guiding a medium to be tempered ( 5 ) is provided and set up; and - at least one second coil ( 6 ) contained in the container ( 2 ) and spaced from the first coil ( 4 ), wherein the second coil ( 6 ) for guiding a tempering medium ( 7 ) is provided and set up; the container interior volume ( 3 ) between the first coil ( 4 ) and the second coil ( 6 ) at least partially with a liquid heat transfer medium ( 8th ) and wherein the liquid heat transfer medium ( 8th ) is a thermal oil. Heat exchange according to claim 1, further comprising: - a drivable homogenizing device ( 9 ) contained in the container ( 2 ) and for equalizing a temperature distribution of a heat transfer medium temperature of the heat transfer medium ( 8th ) in the container interior volume ( 3 ) is provided and set up. Heat exchanger according to claim 2, wherein the homogenizing device ( 9 ) at least one agitator ( 10 ). Heat exchanger according to one of the preceding claims, wherein at least one first temperature sensor ( 11 ) in the container ( 2 ) and in contact with the heat transfer medium ( 8th ), between the first coil ( 4 ) and the second coil ( 6 ) and at least one second temperature sensor ( 12 ) in the container ( 2 ) and in contact with the heat transfer medium ( 8th ), between a container wall ( 13 ) and the first coil ( 4 ) or the second coil ( 6 ) is arranged. Heat exchanger according to one of the preceding claims, wherein a minimum distance between the first coil ( 4 ) and the second coil ( 6 ) is at least 2.5 cm. Method for operating a heat exchanger ( 1 ), wherein a container interior volume ( 3 ) of a container ( 2 ) of the heat exchanger ( 1 ) at least partially with a liquid Heat transfer medium ( 8th ), comprising at least the following steps: a) guiding a medium to be tempered ( 5 ) by at least one first coil ( 4 ) contained in the container ( 2 b) passing a tempering medium ( 7 ) by at least one second coil ( 6 ) contained in the container ( 2 ) and spaced from the first coil ( 4 c) setting a temperature change of a medium temperature of the medium to be tempered ( 5 ) between a first inlet ( 14 ) and a first outlet ( 15 ) of the first coil ( 4 ), wherein the liquid heat transfer medium ( 8th ) is a thermal oil. Method according to claim 6, wherein the heat transfer medium temperature of the heat transfer medium ( 8th ) in the container interior volume ( 3 ) is set to a predetermined temperature. A method according to claim 6 or 7, wherein the method further comprises the following step d): d) Sensing a temperature distribution of a heat transfer medium temperature of the heat transfer medium ( 8th ) in the container interior volume ( 3 ). The method of claim 8, wherein the method further comprises the following step e): e) equalizing the temperature distribution of the heat transfer medium temperature of the heat transfer medium ( 8th ) in the container interior volume ( 3 ). Use of a thermal oil as a heat transfer medium ( 8th ) in a three-media heat exchanger ( 1 ) in a manufacturing process of a pharmaceutical product or a plastic product.

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