An industrial waste heat recovery device based on a hybrid nano-fluid heat exchange system

Abstract

The present invention relates to a technical field of heat energy development and utilization, and in particular to an industrial waste heat recovery device based on a mixed nano-fluid heat exchange system, comprising a liquid storage tank for placing a mixed nano-fluid, a filter for filtering the mixed nano-fluid flowing out of the liquid storage tank, a flow meter for monitoring the flow rate, a pressure pump for applying force to the mixed nano-fluid, a valve for controlling the circulation state of the mixed nano-fluid, a single-layer and double-layer channel plate heat exchanger for heat dissipation of a heat source wall, a waste heat recovery device for recovering waste heat from the mixed nano-fluid, and an analysis module for judging whether the working state of the industrial waste heat recovery device is qualified, and adjusting the operating state of the pressure pump when the working state of the industrial waste heat recovery device is judged to be unqualified, thereby overcoming the problems in the prior art that the medium used to complete the heat exchange cannot be recycled, is easy to pollute the environment, and the absorbed heat energy is not reused for the second time.

Description

Technical Field

[0001] The invention relates to the technical field of thermal energy development and utilization, and in particular to industrial waste heat recovery equipment based on a mixed nano-working fluid heat exchange system. Background Art

[0002] At present, the energy utilization thermal efficiency of industrial furnaces in my country is lower than that of foreign countries, with an average of less than 30%. Most of the heat in the production process is discharged into the urban waters or atmospheric environment in different forms of waste heat, causing heat loss. Among them, there are relatively few studies on the heat dissipation loss of furnace walls. The control of heat dissipation loss of furnace walls is mainly focused on the insulation of furnace walls. Furnace design and researchers have also taken a variety of measures for the insulation of furnace walls, but they mainly focus on strengthening the insulation of furnace walls. The multi-layer furnace wall construction method is adopted to make each layer of furnace wall materials play their own high temperature resistance and insulation role. The furnace wall is made of all refractory fibers to further reduce the temperature of the outer wall of the furnace. Although certain insulation measures are taken, there will still be heat loss, and there is relatively little research on the heat recovery of industrial furnace wall surfaces or the impact on the thermal environment of the workshop and its control and recovery technology.

[0003] The outer wall temperature of a common industrial furnace is around 70-200℃, which is low-grade heat. From the perspective of current energy utilization, its recycling value is still very low. However, with the tense international energy situation, the continuous depletion of fossil energy and the continuous rise in energy prices, people have to consider further secondary energy recovery issues and need to find or research and develop new recovery technologies or systems to recover lower-grade heat.

[0004] Chinese Patent Publication No.: CN109668141A provides a waste heat recovery device and heat exchange method for a boiler system; wherein the waste heat recovery device for a boiler system comprises: a vertical shell having an air inlet and a drain port, wherein the air inlet is located above the drain port; a heat exchange assembly, wherein part or all of the heat exchange assembly is located in the shell, wherein the heat exchange assembly comprises a plurality of heat exchange elements, wherein the plurality of heat exchange elements are arranged at intervals along the height direction of the shell, and the medium to be cooled entering from the air inlet is fully condensed after passing through the plurality of heat exchange elements layer by layer from top to bottom and is discharged from the drain port to the outside of the shell;

[0005] It can be seen that the waste heat recovery device and heat exchange method for the boiler system have the following problems: the medium used to complete the heat exchange cannot be recycled, which is easy to pollute the environment; the absorbed heat energy is not reused, resulting in a waste of resources. Summary of the invention

[0006] To this end, the present invention provides an industrial waste heat recovery device based on a hybrid nano-working fluid heat exchange system to overcome the problem in the prior art that the heat exchange medium cannot be recycled and the absorbed heat energy cannot be reused.

[0007] To achieve the above object, the present invention provides an industrial waste heat recovery device based on a hybrid nano-working fluid heat exchange system, comprising:

[0008] A liquid storage tank for placing dispersed and stable mixed nanofluids;

[0009] A filter connected to the liquid storage tank, for filtering the mixed nanofluid flowing out of the liquid storage tank;

[0010] A flow meter connected to the filter for monitoring the flow of the mixed nanofluid flowing through the filter;

[0011] A pressure pump connected to the flow meter to apply force to the mixed nanofluid;

[0012] A valve connected to the pressure pump to control the flow state of the mixed nanofluid;

[0013] A single-layer channel plate heat exchanger, which is connected to the valve and is used to perform primary heat dissipation on the heat source wall;

[0014] A double-layer channel plate heat exchanger, which is connected to the single-layer channel plate heat exchanger and is used for secondary heat dissipation of the heat source wall;

[0015] A waste heat recovery device, which is connected to the double-layer channel plate heat exchanger, is used to recover waste heat from the mixed nanofluid flowing out of the double-layer channel plate heat exchanger using a cooling medium, and the cooling medium is returned to the waste heat recovery device to supply heat to the heating user for the next step of waste heat utilization;

[0016] An analysis module is connected to the waste heat recovery device, and is used to determine whether the working state of the industrial waste heat recovery equipment is qualified based on the temperature change of the cooling medium in the waste heat recovery device, and to adjust the operating state of the pressure pump when it is determined that the working state of the industrial waste heat recovery equipment is unqualified.

[0017] Furthermore, the internal channel structures of the single-layer channel plate heat exchanger and the double-layer channel plate heat exchanger are both circulation channels with circular grooves, and their structures are based on the linear channels with regularly added groove structures inside the channels.

[0018] Furthermore, the working medium inlet and outlet of the circular groove circulation channel of the single- and double-layer channel plate heat exchanger are both arranged on the same side.

[0019] Furthermore, the bottom of the single-layer channel plate heat exchanger is a smooth surface directly connected to the heat source wall. Through the action of the pressure pump, the mixed nano-working fluid enters the circular groove circulation channel side, and the working fluid flow completes the heat dissipation of the heat source wall.

[0020] Furthermore, there is a thin plate in the middle of the double-layer channel plate heat exchanger, and both the upper and lower sides are circular groove circulation channels, wherein the upper channel is connected to the outlet of the single-layer channel plate heat exchanger, and the mixed nano-working fluid that completes heat absorption in the single-layer channel plate heat exchanger flows into the upper part of the double-layer channel plate heat exchanger, and the lower part of the double-layer channel plate heat exchanger is connected to the waste heat recovery device, and the waste heat recovery system provides cooling working fluid to complete the heat exchange with the mixed nano-working fluid. The cooling working fluid after completing the heat exchange is returned to the waste heat recovery device to provide heating users with the next step of waste heat utilization.

[0021] Furthermore, the mixed nano-working fluid flowing through the single- and double-layer channel plate heat exchangers is a mixed nano-fluid of metal-metal oxide, wherein the metal nano-particles are Ag nano-particles, the metal oxides are TiO2 nano-particles, and the base fluid is deionized water.

[0022] Furthermore, the channels of the single- and double-layer channel plate heat exchanger are made of steel.

[0023] Furthermore, the analysis module determines whether the working state of the industrial waste heat recovery equipment is qualified based on the temperature change of the cooling medium in the waste heat recovery device, and determines whether to adjust the operating state of the pressure pump based on the temperature of the heat source wall of the single- and double-layer channel plate heat exchanger when it is determined that the temperature change of the cooling medium does not meet the standard.

[0024] Furthermore, the analysis module is used to set several adjustment methods for the operating state of the pressure pump based on the difference between the temperature of the cooling medium and the preset temperature standard when the temperature of the heat source wall of the single- and double-layer channel plate heat exchanger meets the standard, and the adjustment range of the operating state of the pressure pump under each adjustment method is different.

[0025] Furthermore, the analysis module is used to determine a correction method for the valve opening based on the adopted adjustment method for the operating state of the pressure pump.

[0026] Compared with the prior art, the beneficial effect of the present invention lies in that the internal channel structures of the single-layer channel plate heat exchanger and the double-layer channel plate heat exchanger in the present invention are both circulation channels with circular grooves, and their structures are based on the linear channels and regularly add groove structures inside the channels to increase the heat dissipation area of ​​the heat exchanger, and the groove spacing and channel spacing are set according to the size of the heat exchange surface.

[0027] Furthermore, the working medium inlet and outlet of the circular groove circulation channel of the single- and double-layer channel plate heat exchanger are both arranged on the same side, which is convenient and quick to install, and can further increase the heat dissipation area of ​​the heat exchanger and improve the efficiency of industrial waste heat recovery.

[0028] Furthermore, the bottom of the single-layer channel plate heat exchanger is a smooth surface directly connected to the heat source wall. Through the action of the pressure pump, the mixed nano-working fluid enters the circular groove circulation channel side, and the working fluid flow completes the heat dissipation of the heat source wall, further improving the heat dissipation efficiency of the industrial waste heat recovery equipment, reducing damage to the heat source wall, saving energy, and avoiding thermal pollution to the environment.

[0029] Furthermore, there is a thin plate in the middle of the double-layer channel plate heat exchanger, and both the upper and lower sides are circular groove circulation channels, wherein the upper channel is connected to the outlet of the single-layer channel plate heat exchanger, and the mixed nano-working fluid that completes heat absorption in the single-layer channel plate heat exchanger flows into the upper part of the double-layer channel plate heat exchanger, and the lower part of the double-layer channel plate heat exchanger is connected to the waste heat recovery device, and the waste heat recovery system provides cooling working fluid to complete the heat exchange with the mixed nano-working fluid. The cooling working fluid after the heat exchange is returned to the waste heat recovery device to supply heat to the heating user for the next step of waste heat utilization, which further improves the heat dissipation efficiency of the industrial waste heat recovery equipment, reduces damage to the heat source wall, saves energy, and avoids thermal pollution to the environment.

[0030] Furthermore, the analysis module determines whether the working state of the industrial waste heat recovery equipment is qualified based on the temperature change of the cooling medium in the waste heat recovery device; the analysis module determines that the working state of the industrial waste heat recovery equipment is qualified when it is determined that the temperature change of the cooling medium meets the standard, or, when it is determined that the temperature change of the cooling medium does not meet the standard, the working state of the industrial waste heat recovery equipment is secondary determined based on the temperature of the single- and double-layer channel plate heat exchanger heat source wall; the analysis module determines that the working state of the industrial waste heat recovery equipment is qualified when it is determined that the temperature of the single- and double-layer channel plate heat exchanger heat source wall meets the standard, or, the analysis module is also used to determine the adjustment method for the operating state of the pressure pump based on the difference between the temperature of the cooling medium and the preset temperature standard when it is determined that the temperature of the single- and double-layer channel plate heat exchanger heat source wall meets the standard, which further ensures the safety of the heat source wall, improves the heat dissipation efficiency of the industrial waste heat recovery equipment, saves energy, and avoids thermal pollution to the environment.

[0031] Furthermore, the analysis module is used to set several adjustment methods for the operating state of the pressure pump based on the difference between the temperature of the cooling medium and the preset temperature standard when it is determined that the temperature of the heat source wall of the single-layer or double-layer channel plate heat exchanger meets the standard, and the adjustment range of the operating state of the pressure pump under each adjustment method is different, which further ensures the safety of the heat source wall, improves the heat dissipation efficiency of the industrial waste heat recovery equipment, saves energy, and avoids thermal pollution to the environment.

[0032] Furthermore, the analysis module is used to determine a correction method for the valve opening based on the adjustment method adopted for the operating status of the pressure pump, further ensuring the safety of the heat source wall, improving the heat dissipation efficiency of the industrial waste heat recovery equipment, saving energy, and avoiding thermal pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of an industrial waste heat recovery device based on a hybrid nano-working fluid heat exchange system according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic structural diagram of a single-layer channel plate heat exchanger according to an embodiment of the present invention;

[0035] Figure 3 It is a top view of the structure of the circular groove circulation channel according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic structural diagram of a double-layer channel plate heat exchanger according to an embodiment of the present invention;

[0037] Figure 5 It is a side sectional view of a double-layer channel plate heat exchanger according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0041] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0042] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] See also Figure 1 As shown, it is a structural schematic diagram of an industrial waste heat recovery device based on a hybrid nano-working fluid heat exchange system according to an embodiment of the present invention; an industrial waste heat recovery device based on a hybrid nano-working fluid heat exchange system comprises a hybrid nano-working fluid storage tank 1, a valve 2 for controlling the inlet and outlet of working fluid, a flange 3, a filter 4, a flow meter 5, a pressure pump 6, a valve 7, a single-layer heat exchanger working fluid inlet 8, an outlet 9, a single-layer groove circulation channel plate 10, a heat source wall 11, a double-layer heat exchanger upper layer hybrid nano-working fluid inlet 12, an outlet 13, an upper layer groove circulation channel 14, a double-layer heat exchanger lower layer cooling working fluid inlet 15, an outlet 16, a lower layer groove circulation channel 17, and a heat user 18. A stable mixed nanofluid is placed in the liquid storage tank 1, and enters the circular groove channel 10 under the action of the pressure pump 6 to complete the heat exchange with the high-temperature furnace wall 11. The heated mixed nano-working fluid then enters the double-layer groove channel 17 in the waste heat recovery circulation system, and again completes the heat exchange with the cooling working fluid provided by the waste heat recovery device. After cooling, the nano-working fluid flows through the circulation pipeline and enters the single-layer groove channel again, and circulates in sequence.

[0044] See also Figure 2 As shown, it is a structural schematic diagram of a single-layer channel plate heat exchanger according to an embodiment of the present invention; 21 is a pipeline connection flange, and the mixed nano-working fluid enters the circular groove channel through the pipeline 22 to complete the heat exchange, wherein 23 is a bolt for fixing the fixture and the channel, 24 is a working fluid outlet pipeline, 25 is a sealing gasket between the channel cover plate and the channel, which plays a sealing role to prevent the working fluid from flowing chaotically during the flow process, 26 is the circular groove channel inlet, 27 is a fixing bolt, 28 is a designed circulation channel, and 29 is the circular groove channel outlet.

[0045] See also Figure 3As shown, it is a top view of the structure of the circular groove circulation channel of an embodiment of the present invention; the circular grooves are symmetrically distributed and have equal spacing. The heat exchange plates of the above-mentioned single-layer and double-layer channel heat exchangers are all circular groove structures. Compared with ordinary linear channels, this structure increases the heat dissipation area, and when the mixed nano-refrigerant flows through the groove structure, a certain amount of turbulence will occur, which will also intensify the heat exchange process and increase the heat exchange efficiency. In order to ensure easy installation, multiple channels are designed as a circulatory structure so that the inlet and outlet of the nano-refrigerant are on the same side.

[0046] See also Figure 4 As shown, it is a schematic diagram of the structure of a double-layer channel plate heat exchanger according to an embodiment of the present invention; compared with a single-layer, a groove channel with the same structure is designed on the other side of the channel, so that the heat of the mixed nano-working fluid can be utilized.

[0047] See also Figure 5 As shown, it is a side sectional view of the double-layer channel plate heat exchanger of an embodiment of the present invention; it can be seen from the figure that the addition of the groove structure greatly increases the heat exchange area of ​​the heat exchanger, and thus will also improve the efficiency of the heat exchanger to a certain extent.

[0048] The heat exchanger is made of steel in consideration of thermal conductivity, performance and economic cost.

[0049] Regarding the choice of heat exchange medium, metal-metal oxide mixed nanofluid is used. Because the thermal conductivity of traditional fluid medium is limited, the improvement of heat exchange efficiency of heat exchanger is limited. Therefore, nanofluid with high thermal conductivity is used as heat exchange medium. Metal Ag nanofluid has strong thermal conductivity, but general dispersion stability. Sedimentation will occur during flow, affecting the service life of pipeline. Although the thermal conductivity of metal oxide TiO2 is general, its dispersion stability is good. The two are combined to prepare Ag-TiO2 mixed nanofluid, which enhances its dispersion stability while maintaining high thermal conductivity.

[0050] The present invention is mainly aimed at a rapid heat dissipation system for a large heat source wall. It utilizes a mixed nanofluid with high thermal conductivity and good dispersion stability as a heat exchange medium and a groove channel heat exchanger with a large heat exchange area as a heat dissipation device. The combination of the two can quickly dissipate heat for the heat source wall, and at the same time, the heat absorbed by the cooling medium is used as waste heat recovery to supply heat users.

[0051] Specifically, the analysis module determines whether the working state of the industrial waste heat recovery equipment is qualified based on the temperature change of the cooling medium in the waste heat recovery device, wherein:

[0052] If the analysis module determines that the temperature change of the cooling medium meets the standard, the industrial waste heat recovery equipment is determined to be in working condition; the temperature of the cooling medium needs to be increased by 196°C;

[0053] If the analysis module determines that the temperature change of the cooling medium does not meet the standard, the analysis module performs a secondary determination on the working state of the industrial waste heat recovery equipment based on the temperature of the heat source wall of the single- and double-channel plate heat exchangers.

[0054] Specifically, the analysis module has a secondary determination method for the working state of the industrial waste heat recovery equipment based on the temperature of the heat source wall of the single- and double-channel plate heat exchanger, wherein:

[0055] If the temperature of the heat source wall of the single-channel and double-channel plate heat exchangers is greater than or equal to 287°C, the working state of the industrial waste heat recovery equipment is determined to be qualified;

[0056] If the temperature of the heat source wall of the single-layer channel plate heat exchanger or the heat source wall of the double-layer channel plate heat exchanger is less than 287°C, the working state of the industrial waste heat recovery equipment is judged to be unqualified. The analysis module determines the adjustment method for the operating state of the pressure pump based on the difference between the temperature of the cooling medium and the preset temperature standard.

[0057] Specifically, the analysis module is provided with several adjustment modes for the operating state of the pressure pump based on the difference between the temperature of the cooling medium and the preset temperature standard, wherein:

[0058] If the analysis module determines that the difference between the temperature of the cooling medium and the preset temperature standard meets the preset temperature difference standard, the pressure of the pressure pump is reduced by 5%; the difference between the temperature of the cooling medium and the preset temperature standard is less than or equal to the first preset temperature difference, the first preset temperature difference is 15°C, and the preset temperature standard is 196°C; the valve opening is 70% under the initial condition; under this adjustment mode, the valve opening is adjusted to 60%;

[0059] If the analysis module preliminarily determines that the difference between the temperature of the cooling medium and the preset temperature standard does not meet the preset temperature difference standard, the pressure of the pressure pump is reduced by 10%; the difference between the temperature of the cooling medium and the preset temperature standard is greater than the first preset temperature difference and less than or equal to the second preset temperature difference, and the second preset temperature difference is 30°C; under this adjustment mode, the valve opening is adjusted to 50%;

[0060] If the analysis module determines that the difference between the temperature of the cooling medium and the preset temperature standard does not meet the preset temperature difference standard, the pressure of the pressure pump is reduced by 15%; the difference between the temperature of the cooling medium and the preset temperature standard is greater than the second preset temperature difference; under this adjustment method, the valve opening is adjusted to 40%.

[0061] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An industrial waste heat recovery device based on a hybrid nano-working fluid heat exchange system, characterized in that: include: A liquid storage tank for placing dispersed and stable mixed nanofluids; A filter connected to the liquid storage tank, for filtering the mixed nanofluid flowing out of the liquid storage tank; A flow meter connected to the filter for monitoring the flow of the mixed nanofluid flowing through the filter; A pressure pump connected to the flow meter to apply force to the mixed nanofluid; A valve connected to the pressure pump to control the flow state of the mixed nanofluid; A single-layer channel plate heat exchanger, which is connected to the valve and is used to perform primary heat dissipation on the heat source wall; A double-layer channel plate heat exchanger, which is connected to the single-layer channel plate heat exchanger and is used for secondary heat dissipation of the heat source wall; A waste heat recovery device, which is connected to the double-layer channel plate heat exchanger, is used to recover waste heat from the mixed nanofluid flowing out of the double-layer channel plate heat exchanger using a cooling medium, and the cooling medium is returned to the waste heat recovery device to supply heat to the heating user for the next step of waste heat utilization; An analysis module is connected to the waste heat recovery device, and is used to determine whether the working state of the industrial waste heat recovery equipment is qualified based on the temperature change of the cooling medium in the waste heat recovery device, and to adjust the operating state of the pressure pump when it is determined that the working state of the industrial waste heat recovery equipment is unqualified.

2. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 1 is characterized in that: The internal channel structures of the single-layer channel plate heat exchanger and the double-layer channel plate heat exchanger are both circulation channels with circular grooves, and their structures are based on linear channels with regular groove structures added inside the channels.

3. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 2 is characterized in that: The working medium inlet and outlet of the circular groove circulation channel of the single- and double-layer channel plate heat exchanger are both arranged on the same side.

4. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 3 is characterized in that: The bottom of the single-layer channel plate heat exchanger is a smooth surface directly connected to the heat source wall. Through the action of the pressure pump, the mixed nano-working fluid enters the circular groove circulation channel side, and the working fluid flows to complete the heat dissipation of the heat source wall.

5. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 4 is characterized in that: There is a thin plate in the middle of the double-layer channel plate heat exchanger, and both the upper and lower sides are circular groove circulation channels, wherein the upper channel is connected to the outlet of the single-layer channel plate heat exchanger, and the mixed nano-working fluid that has completed heat absorption in the single-layer channel plate heat exchanger flows into the upper part of the double-layer channel plate heat exchanger, and the lower part of the double-layer channel plate heat exchanger is connected to the waste heat recovery device, and the waste heat recovery and utilization system provides cooling working fluid to complete the heat exchange with the mixed nano-working fluid. The cooling working fluid after completing the heat exchange returns to the waste heat recovery device to provide heat for the heating user for the next step of waste heat utilization.

6. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 5 is characterized in that: The mixed nano-working fluid flowing through the single- and double-layer channel plate heat exchangers is a mixed nano-fluid of metal-metal oxide, wherein the metal nano-particles are Ag nano-particles, the metal oxides are TiO2 nano-particles, and the base liquid is deionized water.

7. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 5 is characterized in that: The channels of the single- and double-layer channel plate heat exchanger are made of steel.

8. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 1 is characterized in that: The analysis module determines whether the working state of the industrial waste heat recovery equipment is qualified based on the temperature change of the cooling medium in the waste heat recovery device, and determines whether to adjust the operating state of the pressure pump based on the temperature of the heat source wall of the single- and double-layer channel plate heat exchanger when it is determined that the temperature change of the cooling medium does not meet the standard.

9. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 8 is characterized in that: The analysis module is used to set several adjustment methods for the operating state of the pressure pump based on the difference between the temperature of the cooling medium and the preset temperature standard when the temperature of the heat source wall of the single-channel and double-layer plate heat exchanger meets the standard, and the adjustment range of the operating state of the pressure pump under each adjustment method is different.

10. The industrial waste heat recovery equipment based on the hybrid nano-working fluid heat exchange system according to claim 9, characterized in that: The analysis module is used to determine a correction method for the valve opening based on the adopted adjustment method for the operating state of the pressure pump.

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