KR20160067994A - Cooling device and method for cooling a medium - Google Patents

Abstract

To manufacture a cooling device for cooling a medium, in which a large amount of heat can be diverted by the cooling device in an efficient manner, it is proposed that the cooling device includes: a vaporizing device for vaporizing water, A vacuum device for generating a pressure lower than atmospheric pressure in the vaporization space of the vaporization device, a loading space that is at least partially filled with an absorbing medium fluidly connected to the vaporization space of the vaporization device and for absorbing the vaporized water The unloading device being capable of removing water absorbed by the loading device and the absorbing medium from the absorbing medium and discharging it to the periphery of the cooling device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling device,

The present invention relates to a cooling apparatus for cooling a medium.

Such cooling devices are used in manufacturing plants to effectively remove the heat generated in manufacturing processes, particularly at the periphery. For example, the cooling device may be provided with the use of a river from a river adjacent to the manufacturing plant to perform cooling. When there is a considerable need for cooling, especially in the summer, it is generally possible to deliver only small quantities of heat to the river due to legal requirements. This can lead to manufacturing technical and economic difficulties.

It is an object of the present invention to provide a cooling device in which a large amount of heat can be effectively removed.

This object is achieved by a cooling device for cooling a medium according to the invention comprising:

A vaporizing device for vaporizing water,

A vacuum device for generating a pressure lower than atmospheric in the vaporization space of the vaporizer,

A loading device comprising a loading space fluidly connected to the vaporizing space of the vaporizing device and being at least partially filled with an absorbing medium for absorbing the vaporized water,

Wherein the water absorbed by the absorbing medium can be removed from the absorbing medium and discharged into the periphery of the cooling device.

For purposes of the present invention, the absorption of water by the absorption medium is, in particular, the physical and / or chemical reaction of the absorption medium with water. The reaction is particularly reversible. For example, water may be provided to be absorbed by the absorption medium, taken up, adsorbed and / or integrated into the absorption medium.

The absorbing medium is preferably a component of a thermochemical store in which excess heat can be used to cover and / or to mitigate cooling requirements as well as to provide heat.

The cooling device preferably includes an open cooling circuit in which the cooling water is detectably used by vaporization as well as by performing a temperature increase. In this way, under the same cooling requirements, the amount of cooling water required can be reduced considerably, for example up to 60 times.

During the absorption and / or discharge of water by the absorption medium, the heat to be discharged or the heat to be absorbed is referred to. The absorption of water is therefore preferably exothermic or endothermic. Thus, the discharge of water is preferably endothermic or exothermic.

The unloading device may advantageously comprise an unloading space in which the water absorbed by the absorbing medium can be removed from the absorbing medium, and the unloading space is preferably spatially separated from the loading space of the loading device.

The unloading space may advantageously have a pressure higher than the loading space during the cooling operation of the cooling device.

The unloading space is preferably fluidly connected to the peripheral portions of the cooling device. The unloading space preferably has at least approximately the pressure of the peripheral portions, in particular the atmospheric pressure.

The absorbing medium preferably comes into direct contact with the unloaded hot air in the unloading space to remove water from the absorbing medium. The unloaded hot air then preferably transfers the water removed from the absorption medium into the peripheries of the cooling device.

Instead of direct contact between the unloaded hot air and the absorbing medium, it is also possible to provide indirect heat transfer. Here, the water removed from the absorption medium is preferably collected in the form of vapor, for example, in a space which can be opened by a valve to discharge water into the peripheral portions.

It may be advantageous for the cooling device to include a conveying device for conveying the absorbing medium from the loading space to the unloading space.

Alternatively or additionally, the cooling device may comprise a conveying device for conveying the absorbing medium from the unloading space to the loading space.

In particular, it may be provided that the cooling device comprises a conveying device in which the absorbing medium can be conveyed both from the loading space to the unloading space and from the unloading space to the loading space.

The cooling device comprises at least one locking device to which the absorption medium can be conveyed from the lower pressure side of the cooling device to which the vaporizing space and / or the loading space is allocated to the higher pressure side of the cooling device to which the unloading space is assigned May be provided.

In the present specification and in the appended claims, the pressure lower than atmosphere is a pressure not particularly higher than ambient pressure / atmospheric pressure, for example not higher than about 500 mbar, especially not higher than about 100 mbar, preferably not higher than about 50 mbar to be.

In the present specification and the appended claims, the term "high pressure " specifically refers to a pressure essentially corresponding to ambient pressure and / or atmospheric pressure or higher than ambient pressure and / or atmospheric pressure.

In an embodiment of the present invention, the cooling device may be configured such that the absorbing medium can be conveyed from the high pressure side of the cooling device to which the unloading space is assigned to a lower pressure side of the cooling device to which the vaporizing space and / And may include at least one locking device.

In particular, the cooling device may comprise a conveying device for conveying the absorbing medium in a closed circuit. In this case, the absorbing medium can preferably be transported back again from the loading space to the unloading space, especially to a loading space along a separate route.

The cooling device may advantageously include a water supply for supplying liquid water to the vaporizer.

The chiller preferably comprises at least one heat exchanger capable of transferring heat from the medium to be cooled to the vaporizer, in particular from the vaporizer to the vaporized water.

The absorbing medium is preferably liquid or solid. In particular, it may be provided that the absorption medium is free to flow. The absorption medium may be, for example, bulk material and / or powder.

In one embodiment of the invention, the absorption medium comprises a salt, a water soluble salt solution, a silica gel, a mineral, a hydroxide, an ionic liquid and / or a zeolite or a salt, a water soluble salt solution, silica gel, minerals, Ionic liquids and / or zeolites.

It may be advantageous that the cooling device comprises at least one degassing device for degassing the water to be fed to the vaporizing device and / or at least one degassing device for degassing the absorption medium to be loaded with water.

A vacuum device for generating a pressure lower than atmospheric in the vaporization space of the vaporization device may be formed, for example, by a transport device for transporting the absorption medium.

The cooling device preferably includes at least one heat exchanger capable of transferring heat from the external heat source to the absorbing medium arranged in the unloading space.

The cooling device, particularly the unloading device, particularly includes at least one flushing device for flushing the unloading space with the flushing medium. The flushing medium is, for example, dry hot air that can pass through the unloading space of the unloading device.

The absorption medium is preferably heated in the unloading space by a flushing medium and / or by an external heat source, with the result that water is preferably removed from the absorption medium. The water is in particular discharged in the form of gas or vapor and is removed by the flushing medium from the unloading space.

The cooling device of the present invention is particularly suitable for carrying out the method for cooling the medium.

The present invention therefore also provides a method for cooling a medium by means of a cooling device.

In this regard, the present invention has the object to provide a method by which the medium can be cooled effectively and using a very small amount of cooling medium, in particular water.

This object is achieved by a method for cooling a medium by means of a cooling device according to the invention, the method comprising:

Applying a pressure lower than ambient to the vaporization space of the vaporizer,

Introducing liquid water into the vaporization space,

Vaporization of water in the vaporization space,

Introducing vaporized water from the vaporization space into the loading space of the loading apparatus that is at least partially filled with an absorbing medium fluidly connected to the vaporizing space and absorbing the vaporized water,

Absorbing the water vaporized by the absorption medium,

Removing water absorbed by the absorbing medium from the absorbing medium and discharging water into the periphery of the cooling device.

The method according to the present invention preferably has one or more of the features and / or advantages described in connection with the cooling device of the present invention.

In addition, the cooling device of the present invention preferably has individual features and / or advantages or multiple features and / or advantages of the method according to the present invention.

The discharge of water into the peripheries is preferably carried out in gas or vapor form.

It may be advantageous that the absorption medium is taken out of the loading space after absorption of water and introduced into the unloading space of the unloading device of the cooling device.

To remove water absorbed by the absorbing medium from the absorbing medium, the absorbing medium is preferably heated to a temperature above the temperature of the medium to be cooled by the cooling device before cooling the medium.

The water introduced into the vaporizer preferably has a temperature which is not higher than about 25 ° C, in particular not higher than about 20 ° C, for example not higher than about 15 ° C.

To remove water from the absorption medium, the absorption medium is preferably heated to a temperature of at least about 80 캜, such as at least about 90 캜, preferably at least about 100 캜.

It may be advantageous for the absorbing medium to be cooled after removing the water absorbed by the absorbing medium from the absorbing medium and / or before introducing the absorbing medium into the loading space.

In addition, the cooling device of the present invention and / or the method according to the present invention may have one or more of the following features and / or advantages:

The water is preferably vaporized, for example by a cooling device, at a pressure below atmospheric at about 10 ° C.

The main cooling effect of the cooling device is preferably achieved by vaporization of the water at a pressure lower than atmospheric.

In particular, the circulating absorbing medium (reaction medium) is preferably partially transported under partial pressure and under ambient pressure (high pressure), preferably below the atmospheric pressure.

The cooling device of the present invention can be used, for example, when conventional heat pumps fail, especially when cooling is not actually used in another way.

Particularly when the absorption medium is circulated and cooled, for example, before being introduced into the loading space, continuous operation of the cooling device can be enabled.

The cooling water used for cooling is preferably not only sensibly heated but also vaporized. Conventionally, in heating by a typical 10 K, the amount of heat that can be accommodated may be about 41 kJ / kg. On the other hand, the amount of heat that can be accommodated through vaporization is about 2503 kJ / kg. According to the present invention, the cooling potential of the water used can thus be increased by about 60 times. The cooling water requirement therefore decreases sharply at a given cooling power.

Preferably, the cooling water does not need to be fed back into the steel after the heat has been received since the cooling water is preferably discharged in the form of gas or vapor in the periphery.

The absorption medium preferably enables the time at which the waste heat is used to be separated from the point at which the cooling function occurs, especially during loading of the absorption medium, particularly for unloading the absorption medium.

In particular, it is possible to use an inexpensive reactor (loading space) optimized for the required cooling power (vaporizer power), especially if the absorption medium can be transported. A large storage device for receiving the absorbing medium can then preferably be removed.

For example, reference is made to the use of industrial waste heat at a temperature level of about 100 DEG C to unload the absorption medium.

The absorbing medium preferably has a high affinity for water. In particular, the absorbing medium is preferably highly hygroscopic.

Water is preferably introduced into the liquid form into the cooling apparatus and discharged in the form of gases and / or vapors into the peripheral portions from the cooling apparatus.

The cooling device of the present invention is particularly suited for cooling industrial processes, providing pre-determined cooling power, and / or additionally covering peak rods in existing cooling devices.

Further features and / or advantages of the invention will be set forth in the description which follows and in the written description of the working examples.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a cooling device in which liquid water is vaporized under a lower pressure than atmosphere and is vented into vapor and / or gaseous form into the periphery of the cooling device.

The same or functionally equivalent elements are denoted by the same reference numerals in the drawings.

A cooling device, shown in FIG. 1 and generally designated 100, is used, for example, to cool the medium that is fed into the heat exchanger 102, for example.

The cooling device 100 includes a vaporization device 104 for vaporizing water and a water supply device 106 through which liquid water can be introduced into the vaporization device 104.

In addition, the cooling device 100 includes a vacuum device 108 that can be applied at a lower pressure side 110 than the atmosphere of the cooling device 100 with a pressure lower than ambient.

In particular, pressures lower than ambient, i.e., ambient or atmospheric pressure, e.g., less than about 100 mbar, may be generated in the vaporization space 112 of the vaporizer 104 by the vacuum device 108.

Due to the pressure lower than atmospheric in the vaporization space 112, the liquid state water supplied to the vaporizer 104, particularly the vaporization space 112, can be vaporized even at relatively low temperatures.

The cooling device 100 further includes a loading device 114 that includes a loading space 116.

The loading space 116 is at least partially filled with an absorbing medium. The vaporized water can be particularly absorbed by the absorption medium.

The loading space 116 and the vaporizing space 112 may be fluidly connected to one another for this purpose so that the vaporized water in the vaporizing space 112 may be within the loading space 116.

The absorption medium is discharged from the loading space 116 by one or two conveying devices 118 of the cooling device 100 after the absorption of water and within the unloading space 120 of the unloading device 122 Can be introduced.

In particular, water can be removed from the absorbent medium by the unloading device 122.

The conveying device 118 arranged downstream of the loading space 116 in the conveying direction 124 is initially located at a pressure side 110 lower than the atmosphere of the cooling device 100, Forms a lock device 126 that can be transported to the high pressure side 128 of the cooling device 100, i. E., At least approximately ambient pressure.

The unloading device 122 is arranged on this high pressure side 128 of the cooling device 100 so that ambient pressure is present in the unloading space 120 of the unloading device 122, Can be removed from the absorption medium at ambient pressure.

The unloading space 120 of the unloading device 122 is coupled to the heat exchanger 130 of the cooling device 100.

Heat from the external heat source 132 can be transferred to the absorbing medium located in the unloading space 120 by the heat exchanger 130.

The absorption medium can be heated to a particularly high temperature, for example up to about 100 < 0 > C.

The unloading space 120 may be open to the peripheral portions 134 of the cooling device 100 so that water diverted from the absorbing medium may escape into the peripheral portions 134. [

The cooling device 100 further includes a flushing device 136, for example, a flushing device 136 through which hot hot air can be introduced into the unloading space 120.

The unloading space 120 and the absorbing medium present therein are thus adapted to first heat the absorbing medium, secondly to drain water diverted from the absorbing medium from the unloading space 120 and finally into the peripheries 134 Particularly by a flushing device 136 to discharge water.

In order to optimize the functioning of the cooling device 100, one or more degassing devices 138 of the cooling device 100 are additionally provided. In particular, the liquid water to be fed to the vaporizer 104 may be degassed by these degasser devices 138. In addition, the absorption medium to be introduced into the loading space 116 can be degassed by the degassing device 138.

The transition from the high pressure side 128 of the cooling system 100 to the lower pressure side 110 of the atmosphere can be realized by the throttle valves 140 of the cooling system 100 in particular.

In particular, lower pressure than the desired atmosphere in the vaporization space 112 and / or the loading space 116, particularly at the lower pressure side 110, can be achieved in a planned manner by the throttle valves 140.

Finally, the loading device 114 preferably additionally includes an extraction device 142. The gas, particularly the inert gas, accumulated in the loading space 116 during the operation of the cooling device 100 can preferably be discharged from the loading space 116 by the extracting device 142.

In the cooling system 100, a closed absorbing medium circuit 144 is first formed. The absorption medium circuit 144 includes a loading space 116, a conveying device 118, an unloading space 120, a degassing device 138, a throttle valve 140 and a further conveying device 118.

In the absorptive media circuit 144, the absorbent medium may thus be fed into the unloading space 120 through the locking device 126 from the loading space 116. The unloaded medium may then be fed back into the loading space 116 from the unloading space 120 through the degassing device 138 and the throttle valve 140 and through the lock device 126.

The cooling device 100 further includes a water conveying section 146.

The water transport section 146 includes a throttle valve 140, a water supply device 106, a degassing device 138, a vaporization space 112, a loading space 116, a transport device 118, 120 and finally peripheral portions 134.

By means of the water carrying section 146, initially liquid water can be fed into and vaporized in the vaporization space 112 via the throttle valve 140 and through the water supply device 106. The vaporized water is fed into the loading space 116 and can be absorbed there by the absorption medium.

The absorbed water may be fed into the unloading space 120 via the conveying device 118 and thus through the locking device 126 with the absorbing medium, where it is removed from the absorbing medium and finally, 134 together with the flushing medium.

The water carrying section 146 is thus not closed. Rather, initially, liquid water may be supplied to the cooling device 100 and discharged in the form of gas or vapor within the peripheral portions 134.

The cooling device 100 described above functions as follows:

The medium to be cooled by the cooling device 100 is fed into a heat exchanger 102 that is thermally coupled to the vaporization device 104.

The water is vaporized in the vaporizer 104 to recover heat from the medium to be cooled.

Initially, the liquid water is transferred through the throttle valve 140 and through the water supply device 106 into the vaporizing space 112 for this purpose.

A pressure lower than ambient is preferably present in the vaporization space 112 and therefore the water vaporizes at even very low temperatures and thus receives heat.

In particular, the vaporized water recovers heat from the medium to be cooled.

The water presently present in vapor or gaseous form then enters the loading space 116 where it strongly contacts the hygroscopic absorption medium and is absorbed by the absorption medium.

The absorption medium is, in particular, a salt or a water-soluble salt solution.

The water-loaded absorbing medium is then discharged from the loading space 116. In particular, the water-loaded absorbing medium is taken out of the loading space 116 by the conveying device 118 and fed into the unloading space 120 of the cooling device 100.

The absorbing medium here passes through the lock device 126 and is therefore transferred from the lower pressure side 110 of the cooling device to the higher pressure side 128 of the cooling device 100.

In particular, ambient pressure, e.g., atmospheric pressure, is present on this high pressure side 128.

In the unloading space 120, the water-loaded absorbing medium is heated by introduction of heat to remove water absorbed in the absorbing medium from the absorbing medium.

Due to the relatively high pressure presently present, i.e., the ambient pressure, a relatively high temperature, for example, about 100 DEG C, removes water from the absorbent medium in the form of gas or vapor, and finally the peripheral portions 134 of the cooling device 100, It is required to discharge the water to the inside.

This high temperature is achieved, in particular, by the introduction of dry hot air into the unloading space 120 by the flushing device 136 and / or the transfer of heat from the external heat source 132 to the absorbing medium.

After the water is at least partially removed from the absorption medium, the absorption medium can be reused for absorption of water.

The absorption medium is fed back into the loading space 116 for this purpose, in particular through an additional throttle valve 140 and an additional lock device 126.

The absorbing medium is cooled by a cooling device (not shown) prior to introduction into the loading space 116 to reduce the temperature of the absorbing medium being heated in the unloading space 120 and thus to increase the efficiency of the cooling device 100. [ .

The absorbing medium may then be transferred, in particular, to a continuous circuit, i.

The cooling device 100 may then be operated in particular continuously.

When the cooling device 100 is viewed as a whole, it can be seen that the cooling device thus cools the medium to be cooled by vaporizing liquid water.

Unlike the temperature levels in conventional vaporization plants, the medium to be cooled can be cooled to very low temperatures, for example from about 10 캜 to about 15 캜. The amount of water required for this is very small due to the vaporization of water. In addition, recirculation of the heated water to the source of water can be avoided due to the vaporization of water.

100 cooling system
102 heat exchanger
104 Vaporizer
106 Water supply
108 Vacuum device
110 Lower pressure than atmosphere
112 vaporization space
114 loading device
116 loading space
118 Transport device
120 unloading space
122 unloading device
124 Transport direction
126 Lock device
128 High pressure side
130 heat exchanger
132 External heat source
134 Peripheries
136 Flushing device
138 degassification apparatus
140 throttle valve
142 Extraction device
144 absorption medium circuit
146 Water transport section

Claims (17)

1. A cooling device (100) for cooling a medium,
A vaporizing device 104 for vaporizing water,
- a vacuum device (108) for generating a pressure lower than ambient in the vaporization space (112) of the vaporization device (104)
- a loading device (116) comprising a loading space (116) fluidly connected to said vaporizing space (112) of said vaporizing device (104) and at least partially filled with an absorbing medium for absorbing vaporized water 114),
- an unloading device (122) capable of removing water absorbed by the absorbing medium from the absorbing medium and discharging it into the peripheries (134) of the cooling device (100) A cooling device (100) for cooling. The method according to claim 1,
The unloading device 122 includes an unloading space 120 in which water absorbed by the absorbing medium can be removed from the absorbing medium,
Wherein the unloading space (120) is spatially separated from the loading space (116) of the loading device (114). 3. The method of claim 2,
Wherein the unloading space (120) has a pressure higher than the loading space (116) during a cooling operation of the cooling apparatus (100). The method according to claim 2 or 3,
The cooling device 100 may further comprise a conveying device for conveying the absorbing medium from the loading space 116 to the unloading space 120 and / or from the unloading space 120 to the loading space 116 118) for cooling the media. 5. The method of claim 4,
The cooling device (100)
From which the unloading space 120 is allocated, from the lower pressure side 110 of the cooling device 100 to which the vaporizing space 112 and / or the loading space 116 are assigned, And at least one locking device (126) capable of transporting the absorbing medium to the high pressure side (128) of the cooling device (100). The method according to claim 4 or 5,
The cooling device (100)
From the high pressure side 128 of the cooling device 100 to which the unloading space 120 is assigned the cooling device 100 to which the vaporizing space 112 and / And at least one locking device (126) capable of transporting the absorbing medium to a lower pressure side (110) of the atmospheric air of the cooling device (100). 7. The method according to any one of claims 2 to 6,
The cooling device (100) for cooling a medium, wherein the cooling device (100) comprises a conveying device (118) for conveying the absorbing medium in a closed circuit (144). 8. The method according to any one of claims 1 to 7,
The cooling device (100) includes a water supply device (106) for supplying liquid state water to the vaporization device (104). 9. The method according to any one of claims 1 to 8,
The cooling device 100 comprises at least one heat exchanger 102 capable of transferring heat from the medium to be cooled to the vaporization device 104, and more particularly to the vaporized water in the vaporization device 104 , A cooling device (100) for cooling the medium. 10. The method according to any one of claims 1 to 9,
The absorbing medium may comprise a salt, a water soluble salt solution, a silica gel, a mineral, a hydroxide, an ionic liquid and / or a zeolite or a salt, a water soluble salt solution, a silica gel, minerals, a hydroxide, (100) for cooling the medium. 11. The method according to any one of claims 1 to 10,
The cooling device 100 includes at least one degassing device 138 for degassing the water to be fed to the vaporization device 104 and / or at least one degassing device for degassing the absorption medium to be loaded with water. A cooling device (100) for cooling a medium, comprising a gasification device (138). 12. The method according to any one of claims 1 to 11,
Wherein the vacuum device (108) for generating a pressure lower than the atmosphere in the vaporization space (112) of the vaporization device (104) is formed by a transport device (118) (100). 13. The method according to any one of claims 1 to 12,
The cooling system 100 includes at least one heat exchanger 130 that is capable of transferring heat from the external heat source 132 to the absorbing medium arranged in the unloading space 120. The cooling system 100 may include cooling Device (100). A method for cooling a medium by a cooling device (100) comprising:
Applying a pressure lower than ambient to the vaporization space 112 of the vaporizer 104,
Introducing liquid water into the vaporization space 112,
- vaporizing said water in said vaporization space (112)
- the vaporization of the vaporized water from the vaporization space (112) into the vaporization space (112) of the loading device (114) fluidly connected to the vaporization space (112) and at least partially filled with an absorption medium for absorbing the vaporized water Into the loading space 116,
Absorbing the vaporized water by the absorbing medium,
- removing water absorbed by the absorbing medium from the absorbing medium and discharging water into the peripheral portions (134) of the cooling device (100). 15. The method of claim 14,
The absorption medium is drawn from the loading space 116 after absorption of water and introduced into the unloading space 120 of the unloading device 122 of the cooling device 100, Way. 16. The method according to claim 14 or 15,
Wherein the absorbing medium is heated to a temperature above the temperature of the medium to be cooled by the cooling device (100) before the absorbing medium is cooled, so as to remove water absorbed by the absorbing medium from the absorbing medium. ≪ / RTI > 17. The method according to any one of claims 14 to 16,
Wherein the absorbing medium is cooled after the water absorbed by the absorbing medium is removed from the absorbing medium and / or before the absorbing medium is introduced into the loading space (116).

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