Lithium bromide heat pump integrated composite generation condenser and system based on hollow fiber membrane

Abstract

According to the lithium bromide heat pump integrated composite generation condenser and system based on the hollow fiber membrane, industrial waste heat is used as a high-temperature heat source, the membrane heat and mass transfer technology of the hollow fiber membrane is combined, a generator and a condenser in a lithium bromide absorption heat pump are combined, and the integrated composite generation condenser structure is formed. Industrial waste heat serves as a high-temperature heat source to heat a dilute lithium bromide solution, water vapor in the high-temperature lithium bromide solution penetrates through a hollow fiber membrane to enter a water vapor layer due to the steam pressure difference, the water vapor is cooled by circulating cooling water, and simultaneous transfer of heat and a working medium is achieved. Condensate water works in the evaporator, enters the absorber to be sprayed and mixed with a concentrated lithium bromide solution, and then enters the integrated composite generation condenser to be circulated. According to the composite generation condenser, the form that an evaporator and an absorber of traditional equipment are separated is abandoned, the occupied area of the equipment is greatly reduced, meanwhile, conveying of media between the equipment is avoided, heat loss is reduced, and the performance coefficient of a heat pump is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of absorption lithium bromide heat pumps, and in particular relates to an integrated composite generating condenser and system of a lithium bromide heat pump based on a hollow fiber membrane. Background Art

[0002] At present, the consumption of traditional energy has become an important factor restricting the sustainable development of mankind. Faced with the severe energy situation, we must accelerate the development of new energy and improve energy utilization efficiency. my country has abundant waste heat resources. In the process of traditional coal-fired power generation and industrial production, a large amount of waste heat and waste heat will be generated, which is difficult to be utilized due to its low grade. The advantages of lithium bromide heat pumps are its high efficiency, energy saving, environmental protection, safety and reliability. The lithium bromide absorption heat pump technology can convert low-grade thermal energy into high-grade thermal energy to achieve the purpose of waste heat utilization and energy saving and consumption reduction. The condenser and generator of the existing lithium bromide heat pump are two devices arranged separately. Therefore, a large space is required when arranging the lithium bromide heat pump. At the same time, heat will inevitably be lost when transferring between different devices, which seriously restricts the operating efficiency of the lithium bromide heat pump. Summary of the invention

[0003] In view of the characteristics of equipment layout in the existing lithium bromide heat pump technology, the present invention provides an integrated composite generator-condenser and system for a lithium bromide heat pump based on a hollow fiber membrane, which can arrange the generator and condenser in the lithium bromide absorption heat pump in the same device, and can effectively reduce heat loss and the space area required for equipment layout.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: A lithium bromide heat pump integrated composite generator condenser based on a hollow fiber membrane, the integrated composite generator condenser is composed of multiple groups of basic functional units connected in series and parallel; Each group of basic functional units includes a cladding, and a sixth metal heat exchange plate, a fourth metal heat exchange plate, a second heat and mass transfer hollow fiber membrane plate, a second metal heat exchange plate, a first metal heat exchange plate, a first heat and mass transfer hollow fiber membrane plate, a third metal heat exchange plate and a fifth metal heat exchange plate arranged in the cladding from left to right; anti-leakage unit sealing plates are respectively arranged at both ends of the cladding; The top of the cladding is provided with an inlet for high-temperature waste heat medium on the cladding, an inlet for a dilute lithium bromide solution on the cladding, and an inlet for circulating cooling water on the cladding, and the bottom is provided with an outlet for high-temperature waste heat medium after work on the cladding, an outlet for a concentrated lithium bromide solution on the cladding, a pipe opening for a two-phase flow of flowing water and vapor on the cladding, and an outlet for circulating cooling water on the cladding; All metal heat exchange plates and all heat and mass transfer hollow fiber membrane plates have high-temperature waste heat medium inlets, lithium bromide dilute solution inlets and circulating cooling water inlets on the plates at one end, and high-temperature waste heat medium outlets, circulating cooling water outlets, pipe openings for flowing water vapor two-phase flow and lithium bromide concentrated solution outlets on the plates at the other end; The waste heat source is introduced between the second metal heat exchange plate and the first metal heat exchange plate, the dilute lithium bromide solution is introduced between the first metal heat exchange plate and the first heat and mass transfer hollow fiber membrane plate, and between the second metal heat exchange plate and the second heat and mass transfer hollow fiber membrane plate, water vapor is introduced between the first heat and mass transfer hollow fiber membrane plate and the third metal heat exchange plate, between the second heat and mass transfer hollow fiber membrane plate and the fourth metal heat exchange plate, between the fifth metal heat exchange plate and the corresponding anti-leakage unit sealing plate, and between the sixth metal heat exchange plate and the corresponding anti-leakage unit sealing plate, and circulating cooling water is introduced between the third metal heat exchange plate and the fifth metal heat exchange plate, and between the sixth metal heat exchange plate and the fourth metal heat exchange plate.

[0005] A further improvement of the present invention is that the high-temperature waste heat medium inlet on the cladding top, the lithium bromide dilute solution inlet on the cladding and the circulating cooling water inlet on the cladding are arranged diagonally with the high-temperature waste heat medium outlet after work on the cladding, the lithium bromide concentrated solution outlet on the cladding, the pipe opening for flowing water vapor two-phase flow on the cladding and the circulating cooling water outlet on the cladding at the bottom of the cladding.

[0006] A further improvement of the present invention is that a narrow rectangular space is formed between two adjacent metal heat exchange plates, between the metal heat exchange plate and the heat and mass transfer hollow fiber membrane plate, and between the metal heat exchange plate and the anti-leakage unit sealing plate.

[0007] A further improvement of the present invention is that each metal heat exchange plate is a heat exchange plate with metal corrugations.

[0008] A further improvement of the present invention is that each heat and mass transfer hollow fiber membrane plate is a polymer hydrophobic microporous membrane.

[0009] An absorption lithium bromide heat pump system based on an integrated generator condenser, the system is based on the lithium bromide heat pump integrated composite generator condenser based on a hollow fiber membrane, comprising: a cooling tower, an absorber, an evaporator and a heat exchanger; The pipe opening of the water vapor two-phase flow on the cladding is connected to the condensed water inlet of the evaporator, the low-pressure water vapor outlet of the evaporator is connected to the low-pressure water vapor inlet of the absorber, the circulating cooling water outlet on the cladding is connected to the circulating cooling water inlet of the absorber, and the circulating cooling water outlet of the absorber is connected to the circulating cooling water inlet on the cladding through the cooling tower; The lithium bromide dilute solution outlet of the absorber is connected to the lithium bromide dilute solution inlet of the heat exchanger, the lithium bromide dilute solution outlet of the heat exchanger is connected to the lithium bromide dilute solution inlet on the cladding, the lithium bromide concentrated solution outlet on the cladding is connected to the lithium bromide concentrated solution inlet of the heat exchanger, and the lithium bromide concentrated solution outlet of the heat exchanger is connected to the lithium bromide concentrated solution inlet of the absorber.

[0010] A further improvement of the present invention is that an expansion valve is provided on the pipeline between the pipe opening for the water vapor two-phase flow on the cladding and the condensed water inlet of the evaporator.

[0011] A further improvement of the present invention is that a circulating cooling water pump is provided on the pipeline connecting the circulating cooling water outlet of the absorber to the cooling tower.

[0012] A further improvement of the present invention is that the evaporator is also provided with an evaporator chilled water inlet and an evaporator chilled water outlet.

[0013] A further improvement of the present invention is that the temperature of the chilled water is 4°C.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: The hollow fiber membrane-based lithium bromide heat pump integrated composite generator condenser provided by the present invention abandons the form of separate arrangements of the generator and condenser in the traditional lithium bromide heat pump, and utilizes the characteristics of the hollow fiber membrane to composite the two devices into one, thereby avoiding the transmission of media and energy between devices, reducing material and energy losses, and improving the performance coefficient of the heat pump. The various media in the integrated composite generator condenser are not in direct contact, the equipment operation stability is higher, and the application range of waste heat sources is wider. The flexible series-parallel modular setting of the unit group in the integrated composite generator condenser can meet the utilization needs of waste heat of different capacities.

[0015] The absorption lithium bromide heat pump system based on the integrated generator condenser provided by the present invention has a higher degree of equipment integration and is simpler and more reliable in composition than the traditional system. Compared with the traditional absorption lithium bromide heat pump system, the system greatly reduces the floor space of the equipment and the system layout space, which is conducive to the miniaturization and flexible layout of the absorption heat pump system. Compared with the traditional lithium bromide absorption heat pump, it has a higher system efficiency.

[0016] In summary, the present invention innovatively realizes an integrated composite generator-condenser based on hollow fiber membranes. By utilizing the form of a plate heat exchanger and combining the heat and mass transfer characteristics of hollow fiber membranes, the functions of the generator and condenser in the traditional lithium bromide absorption heat pump system can be simultaneously realized, which greatly reduces the heat loss of the medium transmitted between different devices, while saving the space required for equipment layout and improving the system efficiency of the lithium bromide heat pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the hollow fiber membrane-based lithium bromide heat pump integrated composite generator condenser of the present invention.

[0018] Figure 2 The schematic diagram of the layout of the absorption lithium bromide heat pump system based on the integrated generating condenser of the present invention.

[0019] Description of reference numerals: 1-first metal heat exchange plate, 2-second metal heat exchange plate, 3-first heat and mass transfer hollow fiber membrane plate, 4-second heat and mass transfer hollow fiber membrane plate, 5-third metal heat exchange plate, 6-fourth metal heat exchange plate, 7-fifth metal heat exchange plate, 8-sixth metal heat exchange plate, 9-high-temperature waste heat medium inlet on the plate, 10-high-temperature waste heat medium outlet after work on the plate, 11-lithium bromide dilute solution inlet on the plate, 12-lithium bromide concentrated solution outlet on the plate, 13-tube for flowing water vapor two-phase flow on the plate 14-on-board circulating cooling water inlet, 15-on-board circulating cooling water outlet, 16-on-cladding high-temperature waste heat medium inlet, 17-on-cladding high-temperature waste heat medium outlet after work, 18-on-cladding lithium bromide dilute solution inlet, 19-on-cladding lithium bromide concentrated solution outlet, 20-on-cladding flowing water vapor two-phase flow pipe opening, 21-on-cladding circulating cooling water inlet, 22-on-cladding circulating cooling water outlet, 23-anti-leakage unit sealing plate, 24-integrated composite generating condenser; Circulating cooling water line: 25-cooling tower, 26-circulating cooling water pump, 27-absorber circulating cooling water outlet, 28-absorber, 29-absorber circulating cooling water inlet; Water vapor two-phase flow line: 30-expansion valve, 31-evaporator condensed water inlet, 32-evaporator, 33-evaporator chilled water inlet, 34-evaporator chilled water outlet, 35-evaporator low-pressure water vapor outlet, 36-absorber low-pressure water vapor inlet; Lithium bromide solution route: 37-absorber lithium bromide dilute solution outlet, 38-absorber lithium bromide concentrated solution inlet, 39-heat exchanger, 40-heat exchanger lithium bromide dilute solution inlet, 41-heat exchanger lithium bromide dilute solution outlet, 42-heat exchanger lithium bromide concentrated solution inlet, 43-heat exchanger lithium bromide concentrated solution outlet. DETAILED DESCRIPTION

[0020] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0021] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0025] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1 refer to Figure 1 The present embodiment provides a lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane, wherein the integrated composite generator condenser 24 is composed of multiple groups of basic functional units connected in series and in parallel; Each group of basic functional units includes a cladding, and from left to right, a sixth metal heat exchange plate 8, a fourth metal heat exchange plate 6, a second heat and mass transfer hollow fiber membrane plate 4, a second metal heat exchange plate 2, a first metal heat exchange plate 1, a first heat and mass transfer hollow fiber membrane plate 3, a third metal heat exchange plate 5 and a fifth metal heat exchange plate 7 are arranged in the cladding; both ends of the cladding are respectively provided with anti-leakage unit sealing plates 23; The top of the cladding is provided with an inlet 16 for high-temperature waste heat medium on the cladding, an inlet 18 for a dilute lithium bromide solution on the cladding, and an inlet 21 for circulating cooling water on the cladding. The bottom is provided with an outlet 17 for high-temperature waste heat medium after work on the cladding, an outlet 19 for a concentrated lithium bromide solution on the cladding, a pipe opening 20 for a two-phase flow of water and steam on the cladding, and an outlet 22 for circulating cooling water on the cladding. All metal heat exchange plates and all heat and mass transfer hollow fiber membrane plates have high-temperature waste heat medium inlet 9, lithium bromide dilute solution inlet 11 and circulating cooling water inlet 14 on the plate at one end, and high-temperature waste heat medium outlet 10, circulating cooling water outlet 15, pipe opening 13 for flowing water vapor two-phase flow and lithium bromide concentrated solution outlet 12 on the plate at the other end; The second metal heat exchange plate 2 and the first metal heat exchange plate 1 are used to pass waste heat source, the first metal heat exchange plate 1 and the first heat and mass transfer hollow fiber membrane plate 3 and the second metal heat exchange plate 2 and the second heat and mass transfer hollow fiber membrane plate 4 are used to pass lithium bromide dilute solution, the first heat and mass transfer hollow fiber membrane plate 3 and the third metal heat exchange plate 5, the second heat and mass transfer hollow fiber membrane plate 4 and the fourth metal heat exchange plate 6, the fifth metal heat exchange plate 7 and the corresponding anti-leakage unit sealing plate 23 and the sixth metal heat exchange plate 8 and the corresponding anti-leakage unit sealing plate 23 are used to pass water vapor, and the third metal heat exchange plate 5 and the fifth metal heat exchange plate 7 and the sixth metal heat exchange plate 8 and the fourth metal heat exchange plate 6 are used to pass circulating cooling water.

[0029] In this embodiment, the high-temperature waste heat medium inlet 16 on the cladding top, the lithium bromide dilute solution inlet 18 on the cladding and the circulating cooling water inlet 21 on the cladding are diagonally arranged with the high-temperature waste heat medium outlet 17 after work on the cladding, the lithium bromide concentrated solution outlet 19 on the cladding, the pipe opening 20 for flowing water vapor two-phase flow on the cladding and the circulating cooling water outlet 22 on the cladding at the bottom of the cladding.

[0030] In this embodiment, narrow rectangular spaces are formed between two adjacent metal heat exchange plates, between the metal heat exchange plate and the heat and mass transfer hollow fiber membrane plate, and between the metal heat exchange plate and the anti-leakage unit sealing plate, and heat and medium exchanges are generated with adjacent fluids.

[0031] In this embodiment, each metal heat exchange plate is a heat exchange plate with metal corrugations, which is used to strengthen the heat exchange between the plates.

[0032] In this embodiment, each heat and mass transfer hollow fiber membrane plate is a polymer hydrophobic microporous membrane.

[0033] Example 2 refer to Figure 1 and Figure 2 The absorption lithium bromide heat pump system based on the integrated generating condenser provided in this embodiment includes: a cooling tower 25, an absorber 28, an evaporator 32 and a heat exchanger 39; the pipe mouth 20 of the flowing water vapor two-phase flow on the cladding is connected to the evaporator condensate inlet 31, the evaporator low-pressure water vapor outlet 35 is connected to the absorber low-pressure water vapor inlet 36, the cladding circulating cooling water outlet 22 is connected to the absorber circulating cooling water inlet 29, and the absorber circulating cooling water outlet 27 is connected to the cladding circulating cooling water inlet 21 through the cooling tower 25; the absorber lithium bromide dilute solution outlet 37 is connected to the heat exchanger lithium bromide dilute solution inlet 40, the heat exchanger lithium bromide dilute solution outlet 41 is connected to the cladding lithium bromide dilute solution inlet 18, the cladding lithium bromide concentrated solution outlet 19 is connected to the heat exchanger lithium bromide concentrated solution inlet 42, and the heat exchanger lithium bromide concentrated solution outlet 43 is connected to the absorber lithium bromide concentrated solution inlet 38.

[0034] In this embodiment, an expansion valve 30 is provided on the pipeline between the pipe opening 20 for the water vapor two-phase flow on the cladding and the condensed water inlet 31 of the evaporator.

[0035] In this embodiment, a circulating cooling water pump 26 is provided on the pipeline connecting the absorber circulating cooling water outlet 27 to the cooling tower 25 .

[0036] In this embodiment, the evaporator 32 is further provided with an evaporator chilled water inlet 33 and an evaporator chilled water outlet 34 .

[0037] In this embodiment, when working, it includes: The lithium bromide dilute solution is pressurized by a pump from the absorber 28 and passes through the heat exchanger 39 for heat exchange, and enters the integrated composite generator condenser 24. After being heated by the waste heat source, the lithium bromide dilute solution generates a vapor pressure difference with the steam condensate water two-phase liquid cooled by the circulating cooling water on the other side of the heat and mass transfer hollow fiber membrane plate. Through the membrane distillation effect, the water vapor passes through the heat and mass transfer hollow fiber membrane plate and enters the other side. The lithium bromide solution is concentrated into a lithium bromide concentrated solution, and the concentrated solution passes through the heat exchanger 39 to heat the opposite lithium bromide dilute solution, and the cooled concentrated solution returns to the absorber 28.

[0038] Among them, the high-temperature water vapor is cooled by the circulating cooling water into condensed water. The condensed water passes through the expansion valve 30 and enters the extremely low-pressure evaporator 32, where it completes the working cycle with the chilled water system. The temperature of the chilled water is about 4°C, and the condensed water of the evaporator 32 is about 12°C. Heat is transferred between them through the pipe wall, so that the condensed water evaporates into gas at low pressure, while taking away a large amount of heat to complete the work. All evaporated condensed water will gather in the chamber of the evaporator 32, and will be reintroduced into the almost vacuum absorber 28 for spraying, and quickly mixed with the lithium bromide concentrated solution, and then turned into a dilute lithium bromide solution for circulation.

[0039] The circulating cooling water used to cool the steam in the integrated composite generator condenser 24 enters the cooling tower 25 for cooling, and is then pumped into the absorber 28 to absorb the reaction heat generated by the lithium bromide concentrated solution absorbing water molecules, and then enters the integrated composite generator condenser 24 again to cool the water vapor, completing a cycle.

[0040] Compared with the existing absorption lithium bromide heat pump technology, the present invention adopts an integrated design, integrating the generator and the condenser into one device to form an integrated composite generator condenser, thereby saving system layout space and improving the working efficiency of the lithium bromide heat pump.

[0041] Industrial waste heat acts as a high-temperature heat source to heat the lithium bromide solution. The high temperature creates a vapor pressure difference between the lithium bromide solution and water vapor on both sides of the hollow fiber membrane. The water vapor in the lithium bromide solution passes through the porous hollow fiber membrane through the membrane distillation effect. The water vapor transferred to the other side transfers heat with the circulating cooling water through the metal corrugated plate and condenses into condensed water.

[0042] The condensed water flows out of the integrated composite generator condenser, performs heat transfer with chilled water in the vacuum evaporator, and then enters the absorber to spray the lithium bromide solution with increased concentration. The diluted lithium bromide solution re-enters the composite generator condenser for circulation. The circulating cooling water that cools the water vapor in the integrated composite generator condenser passes through air cooling or other circulating water cooling systems. Under the action of the pump, it absorbs the heat generated by the spraying of lithium bromide concentrated solution in the absorber and re-enters the integrated composite generator condenser for circulation.

[0043] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane, characterized in that: The integrated composite generator condenser (24) is composed of a plurality of groups of basic functional units connected in series and in parallel; Each group of basic functional units comprises a cladding, and a sixth metal heat exchange plate (8), a fourth metal heat exchange plate (6), a second heat and mass transfer hollow fiber membrane plate (4), a second metal heat exchange plate (2), a first metal heat exchange plate (1), a first heat and mass transfer hollow fiber membrane plate (3), a third metal heat exchange plate (5) and a fifth metal heat exchange plate (7) which are arranged in sequence from left to right in the cladding; anti-leakage unit sealing plates (23) are respectively arranged at both ends of the cladding; The top of the cladding is provided with an inlet for high-temperature waste heat medium on the cladding (16), an inlet for a dilute lithium bromide solution on the cladding (18), and an inlet for circulating cooling water on the cladding (21); the bottom is provided with an outlet for high-temperature waste heat medium after processing on the cladding (17), an outlet for a concentrated lithium bromide solution on the cladding (19), a pipe opening for a two-phase flow of water and vapor on the cladding (20), and an outlet for circulating cooling water on the cladding (22); All metal heat exchange plates and all heat and mass transfer hollow fiber membrane plates have a high-temperature waste heat medium inlet (9) on the plate, a lithium bromide dilute solution inlet (11) on the plate, and a circulating cooling water inlet (14) on the plate at one end, and a high-temperature waste heat medium outlet (10) after processing on the plate, a circulating cooling water outlet (15) on the plate, a pipe opening for flowing water vapor two-phase flow on the plate (13), and a lithium bromide concentrated solution outlet (12) on the plate at the other end; The waste heat source is introduced between the second metal heat exchange plate (2) and the first metal heat exchange plate (1); the dilute lithium bromide solution is introduced between the first metal heat exchange plate (1) and the first heat and mass transfer hollow fiber membrane plate (3) and between the second metal heat exchange plate (2) and the second heat and mass transfer hollow fiber membrane plate (4); water vapor is introduced between the first heat and mass transfer hollow fiber membrane plate (3) and the third metal heat exchange plate (5); between the second heat and mass transfer hollow fiber membrane plate (4) and the fourth metal heat exchange plate (6); between the fifth metal heat exchange plate (7) and the corresponding anti-leakage unit sealing plate (23); and between the sixth metal heat exchange plate (8) and the corresponding anti-leakage unit sealing plate (23); and circulating cooling water is introduced between the third metal heat exchange plate (5) and the fifth metal heat exchange plate (7) and between the sixth metal heat exchange plate (8) and the fourth metal heat exchange plate (6).

2. The lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane according to claim 1, characterized in that: The high-temperature waste heat medium inlet (16) on the cladding top, the lithium bromide dilute solution inlet (18) on the cladding and the circulating cooling water inlet (21) on the cladding are arranged diagonally with the high-temperature waste heat medium outlet (17) on the cladding after processing, the lithium bromide concentrated solution outlet (19) on the cladding, the pipe opening (20) for the flowing water vapor two-phase flow on the cladding and the circulating cooling water outlet (22) on the cladding bottom.

3. The lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane according to claim 1, characterized in that: Narrow rectangular spaces are formed between two adjacent metal heat exchange plates, between the metal heat exchange plate and the heat and mass transfer hollow fiber membrane plate, and between the metal heat exchange plate and the anti-leakage unit sealing plate.

4. The lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane according to claim 1, characterized in that: Each metal heat exchange plate is a heat exchange plate with metal corrugations.

5. The lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane according to claim 1, characterized in that: Each heat and mass transfer hollow fiber membrane plate is a polymer hydrophobic microporous membrane.

6. An absorption lithium bromide heat pump system based on an integrated generating condenser, characterized in that: The system is based on the lithium bromide heat pump integrated composite generator condenser based on hollow fiber membrane according to any one of claims 1 to 5, comprising: a cooling tower (25), an absorber (28), an evaporator (32) and a heat exchanger (39); The pipe opening (20) for the flowing water vapor two-phase flow on the cladding is connected to the evaporator condensation water inlet (31), the evaporator low-pressure water vapor outlet (35) is connected to the absorber low-pressure water vapor inlet (36), the cladding circulating cooling water outlet (22) is connected to the absorber circulating cooling water inlet (29), and the absorber circulating cooling water outlet (27) is connected to the cladding circulating cooling water inlet (21) through the cooling tower (25); The lithium bromide dilute solution outlet (37) of the absorber is connected to the lithium bromide dilute solution inlet (40) of the heat exchanger, the lithium bromide dilute solution outlet (41) of the heat exchanger is connected to the lithium bromide dilute solution inlet (18) on the cladding, the lithium bromide concentrated solution outlet (19) on the cladding is connected to the lithium bromide concentrated solution inlet (42) of the heat exchanger, and the lithium bromide concentrated solution outlet (43) of the heat exchanger is connected to the lithium bromide concentrated solution inlet (38) of the absorber.

7. The absorption lithium bromide heat pump system based on an integrated generating condenser according to claim 6, characterized in that: An expansion valve (30) is provided on a pipeline connecting a pipe opening (20) for flowing water vapor two-phase flow on the cladding to an evaporator condensate inlet (31).

8. The absorption lithium bromide heat pump system based on an integrated generating condenser according to claim 6, characterized in that: A circulating cooling water pump (26) is provided on a pipeline connecting the absorber circulating cooling water outlet (27) to the cooling tower (25).

9. The absorption lithium bromide heat pump system based on an integrated generating condenser according to claim 6, characterized in that: The evaporator (32) is also provided with an evaporator chilled water inlet (33) and an evaporator chilled water outlet (34).

10. The absorption lithium bromide heat pump system based on an integrated generating condenser according to claim 9, characterized in that: The temperature of the chilled water is 4°C.

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