Adsorption refrigeration system, monitoring method thereof, storage medium and product

Abstract

The application discloses an adsorption refrigeration system monitoring method, comprising the following steps: obtaining the heat exchange fluid temperature at the inlet of the heat exchange channel of the adsorption bed in a preset stage as the heat exchange fluid inlet temperature; and adjusting the heat exchange fluid flow rate at the inlet of the heat exchange channel of the adsorption bed in the preset stage according to the heat exchange fluid inlet temperature to correct the heat exchange amount of the heat exchange channel. In the adsorption refrigeration system monitoring method, when the heat exchange fluid temperature changes, the corresponding corrected flow rate can better avoid the desorption time length or the adsorption time length from changing too much, so that the desorption time length and the adsorption time length can maintain a stable ratio, and the adsorption refrigeration system can orderly perform desorption and adsorption, and the refrigeration efficiency can be better ensured. The application further discloses an adsorption refrigeration system monitoring method, a computer readable storage medium and a computer program product.

Description

Technical Field

[0001] This invention relates to the field of adsorption technology, and more specifically, to a method for monitoring an adsorption-cooling system, an adsorption-cooling system using the above-described monitoring method, a computer-readable storage medium storing the adsorption-cooling system monitoring method, and a computer program product using the above-described adsorption-cooling system monitoring method. Background Technology

[0002] Currently, data center air conditioning units mainly rely on the traditional method of converting electrical energy into mechanical energy for cooling. The high power consumption and heat generated by data centers, as well as the inexhaustible natural cooling sources, are not fully utilized. This waste heat utilization cooling solution can make full use of the heat of the data center, without the need for compressor cooling, and can still provide the cooling capacity required by the data center.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: the waste heat source often experiences temperature fluctuations due to load changes or other reasons. These temperature fluctuations are most affected by the environment, causing fluctuations in the desorption or adsorption time of the adsorption chiller, which in turn leads to an imbalance between the two. This has a significant impact on the cooling efficiency of the adsorption chiller. Therefore, there is a problem that the desorption and adsorption cannot be carried out in a high-efficiency synchronous manner due to temperature fluctuations of the heat / cooling source, resulting in low efficiency. Summary of the Invention

[0004] In view of the above, the first objective of this invention is to provide a monitoring method for an adsorption refrigeration system, which can effectively solve the problem that the ratio of desorption time to adsorption time in the current adsorption refrigeration system fluctuates greatly due to the temperature fluctuation of the heat exchange fluid. The second objective of this invention is to provide an adsorption refrigeration system using the above-mentioned monitoring method. The third objective of this invention is to provide a computer-readable storage medium for storing the above-mentioned monitoring method. The fourth objective of this invention is to provide a computer program product using the above-mentioned monitoring method.

[0005] To achieve the first objective mentioned above, the present invention provides the following technical solution:

[0006] A method for monitoring an adsorption refrigeration system includes the following steps:

[0007] The temperature of the heat exchange fluid at the inlet of the heat exchange channel of the adsorption bed in the preset stage is obtained as the inlet temperature of the heat exchange fluid. The preset stage is either the desorption stage or the adsorption stage.

[0008] Based on the inlet temperature of the heat exchange fluid, the flow rate of the heat exchange fluid entering the pre-set stage adsorption bed at the inlet of the heat exchange channel is adjusted accordingly to correct the heat exchange capacity of the heat exchange channel.

[0009] In the aforementioned adsorption refrigeration system monitoring method, when the temperature of the heat exchange fluid entering the heat exchange channel changes due to variations in the external environment, the flow rate can be adjusted to correct the heat exchange capacity of the heat exchange channel. This mitigates the change in heat exchange efficiency caused by the temperature adjustment of the heat exchange fluid, thereby correcting the desorption or adsorption time. In this method, the corresponding flow rate correction when the heat exchange fluid temperature changes better prevents excessive fluctuations in desorption or adsorption time, maintaining a stable ratio between the two. This ensures that the entire adsorption refrigeration system can perform desorption and adsorption in an orderly manner, thus better guaranteeing refrigeration efficiency. In summary, this adsorption refrigeration system monitoring method effectively solves the problem of large fluctuations in the ratio of desorption to adsorption time caused by variations in the heat exchange fluid temperature in current adsorption refrigeration systems.

[0010] In some technical solutions, adjusting the flow rate of the heat exchange fluid at the inlet of the heat exchange channel of the adsorption bed entering the preset stage means adjusting the flow velocity of the heat exchange fluid in the heat exchange channel.

[0011] In some technical solutions, adjusting the flow rate of the heat exchange fluid entering the pre-set stage adsorption bed at the inlet of the heat exchange fluid according to the inlet temperature of the heat exchange fluid, in order to correct the heat exchange capacity of the heat exchange channel, is as follows:

[0012] Based on the inlet temperature of the heat exchange fluid, the target flow rate value is obtained by querying the pre-stored temperature-flow rate correspondence table.

[0013] The flow rate of the heat exchange fluid at the inlet of the heat exchange channel of the adsorption bed in the preset stage is controlled to reach the target flow rate value.

[0014] Some technical solutions also include:

[0015] Determine whether the inlet temperature of the heat exchange fluid has reached the preset boundary temperature; if so, output the corresponding result.

[0016] In some technical solutions, the corresponding result is an alarm message.

[0017] In some technical solutions, the method further includes: adjusting the flow rate of the heat exchange fluid at the inlet of the heat exchange channel entering the preset stage adsorption bed based on the difference between the inlet temperature of the heat exchange fluid and the preset temperature, as follows:

[0018] Controlling the flow rate of the heat exchange fluid at the inlet of the heat exchange channel of the adsorption bed in the preset stage to achieve the target flow rate value Q2=Q1(T) 11 -T 12 ) / (T 21 -T 22), where Q1 is the heat exchange fluid flow rate at the inlet of the heat exchange channel of the adsorption bed in the preset stage before adjustment; where T 11 To adjust the temperature of the heat exchange fluid at the inlet of the heat exchange channel of the pre-set adsorption bed; where T 12 To adjust the temperature of the heat exchange fluid at the outlet of the heat exchange channel of the pre-set adsorption bed; where T 21 The temperature of the heat exchange fluid at the inlet of the heat exchange channel of the adsorption bed in the current preset stage; where T 22 This refers to the temperature of the heat exchange fluid at the outlet of the heat exchange channel of the adsorption bed in the current preset stage.

[0019] In some technical solutions, the heat exchange fluid is a cooling fluid for adsorption, and the preset stage is an adsorption stage.

[0020] To achieve the second objective mentioned above, the present invention also provides an adsorption refrigeration system, which includes an adsorption bed, a controller, a control valve, and a temperature sensor. The temperature sensor is capable of acquiring the temperature of the heat exchange fluid at the inlet of the heat exchange channel of the adsorption bed. The control valve is capable of adjusting the flow rate of the heat exchange fluid in the heat exchange channel of the adsorption bed. The controller is used to execute the acquired computer program to implement any of the above-mentioned adsorption refrigeration system monitoring methods. Since the above-mentioned adsorption refrigeration system monitoring method has the aforementioned technical effects, the adsorption refrigeration system having this monitoring method should also have the corresponding technical effects.

[0021] To achieve the third objective mentioned above, the present invention also provides a computer-readable storage medium for storing a computer program that, when executed by a processor, implements any of the aforementioned adsorption refrigeration system monitoring methods. Since the aforementioned adsorption bed monitoring method has the aforementioned technical effects, the computer-readable storage medium applying this adsorption refrigeration system monitoring method should also have corresponding technical effects.

[0022] To achieve the fourth objective mentioned above, the present invention also provides a computer program product, comprising a computer program / instructions, which, when executed by a processor, implements any of the aforementioned adsorption refrigeration system monitoring methods. Since the aforementioned adsorption bed monitoring method possesses the aforementioned technical effects, the computer program product applying this adsorption refrigeration system monitoring method should also possess corresponding technical effects. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart illustrating the adsorption refrigeration system monitoring method provided in an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the adsorption refrigeration system provided in an embodiment of the present invention.

[0026] The following labels are shown in the attached diagram:

[0027] 1. Adsorption bed; 2. Condenser; 3. Evaporator; 4. Heat exchange channel. Detailed Implementation

[0028] This invention discloses a monitoring method for an adsorption refrigeration system, which effectively solves the problem that the ratio of desorption time to adsorption time in the current adsorption refrigeration system fluctuates greatly due to the temperature fluctuation of the heat exchange fluid.

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-2 , Figure 1 This is a flowchart illustrating the adsorption refrigeration system monitoring method provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the adsorption refrigeration system provided in an embodiment of the present invention.

[0031] In some embodiments, an adsorption refrigeration system monitoring method is provided. Specifically, the adsorption refrigeration system monitoring method mainly includes the following steps.

[0032] Step S100: Obtain the temperature of the heat exchange fluid at the inlet of the heat exchange channel 4 of the pre-set adsorption bed 1, and use it as the inlet temperature of the heat exchange fluid.

[0033] It should be noted that the judgment steps in steps S100 and S200 are mainly performed within a certain stage of the adsorption bed 1. For the adsorption bed 1 of the adsorption-cooling system, high-temperature fluid (heat source fluid for desorption) and low-temperature fluid (cooling fluid for adsorption) need to be alternately introduced. When the adsorption bed 1 enters the adsorption stage, the low-temperature fluid is introduced to cool the adsorbent in the adsorption bed 1, while the low-temperature fluid heats up. The gaseous adsorbent opposite the adsorbent is then adsorbed by the adsorbent until adsorption is complete. At this point, the introduction of the low-temperature fluid is stopped, and the adsorption stage ends. Then, the high-temperature fluid is introduced, and the adsorption bed 1 enters the desorption stage. After the high-temperature fluid is introduced, the adsorbent is heated, and the heated adsorbent desorbs the gaseous adsorbent. At this point, the high-temperature fluid cools down and flows out from the outlet. After the adsorbent desorption is complete, the introduction of the high-temperature fluid is stopped, and the desorption stage ends, allowing the adsorption stage to resume.

[0034] Based on the above analysis, it can be found that the preset stage can be either an adsorption stage or a desorption stage. If the preset stage is an adsorption stage, then the heat exchange fluid is the cooling fluid, i.e., the cooling fluid used for adsorption; if the preset stage is a desorption stage, then the heat exchange fluid is the heat source fluid, i.e., the heat source fluid used for desorption.

[0035] For more accurate determination, a temperature sensor can be directly installed at the inlet of heat exchange channel 4 to directly detect the inlet temperature. Alternatively, the temperature can be detected elsewhere, as long as it reflects the temperature of the heat exchange fluid at the inlet of heat exchange channel 4. It should be noted that in actual operation, the fluid temperature in heat exchange channel 4 can be used to determine whether the current stage is desorption or adsorption. This is because even with temperature fluctuations, the cooling fluid used for adsorption and the heat source fluid used for desorption will exhibit a significant temperature difference. Therefore, the intermediate value between the two can be used as a criterion to determine whether the current fluid is the cooling fluid used for adsorption or the heat source fluid used for desorption, thus determining whether it is the adsorption or desorption stage. Alternatively, other methods can also be used to obtain the temperature.

[0036] Step S200: Adjust the flow rate of the heat exchange fluid at the inlet of the heat exchange channel 4 into the preset stage adsorption bed 1 according to the inlet temperature of the heat exchange fluid, so as to correct the heat exchange capacity of the heat exchange channel 4.

[0037] The correction of the heat exchange capacity of heat exchange channel 4 refers to correcting the change in heat exchange capacity of heat exchange channel 4 caused by the change in the inlet temperature of the heat exchange fluid. Specifically, there are two main correction methods: during the adsorption stage, the higher the inlet temperature of the heat exchange fluid, the higher the corresponding flow rate of the heat exchange fluid; during the desorption stage, the higher the inlet temperature of the heat exchange fluid, the lower the corresponding flow rate of the heat exchange fluid.

[0038] Correspondingly, if the heat exchange fluid is a desorption heat source fluid: when the inlet temperature of the heat exchange fluid increases, the flow rate of the desorption heat source fluid at the inlet of heat exchange channel 4 needs to be reduced to decrease the current heat exchange capacity of heat exchange channel 4 for correction. The specific adjustment amount should be determined based on whether correction is possible. Simultaneously, when the inlet temperature of the heat exchange fluid decreases, the flow rate of the desorption heat source fluid at the inlet of heat exchange channel 4 needs to be increased to increase the current heat exchange capacity of heat exchange channel 4 for correction. The specific adjustment amount should be determined based on whether correction is possible. It should be noted that the correction here does not require complete correction; at least some correction adjustment should be possible.

[0039] Correspondingly, if the heat exchange fluid is an adsorption cooling fluid: when the inlet temperature of the heat exchange fluid increases, the flow rate of the adsorption cooling fluid at the inlet of heat exchange channel 4 needs to be increased to increase the current heat exchange capacity of heat exchange channel 4 for correction. The specific adjustment amount should be based on what can be corrected. At the same time, when the inlet temperature of the heat exchange fluid decreases, the flow rate of the adsorption cooling fluid at the inlet of heat exchange channel 4 needs to be decreased to decrease the current heat exchange capacity of heat exchange channel 4 for correction. The specific adjustment amount should be based on what can be corrected. It should be noted that the correction here does not require a complete correction, but at least some correction adjustment should be possible.

[0040] It should be noted that, based on the inlet temperature of the heat exchange fluid, the flow rate of the heat exchange fluid entering the inlet of heat exchange channel 4 of adsorption bed 1 in the preset stage should be adjusted accordingly. The corresponding adjustment range can be obtained by looking up a table based on the pre-stored correspondence. Alternatively, a relationship can be established and calculated through simulation. The relationship establishment method mainly involves the relationship between time flow rate and temperature. In this case, the relationship should be established separately for the heat source fluid used for desorption and the cooling fluid used for adsorption to obtain a more accurate relationship. After determining whether the current stage is the desorption stage or the adsorption stage, the corresponding temperature and flow rate data table or the corresponding relationship should be selected.

[0041] In the aforementioned adsorption refrigeration system monitoring method, when the temperature of the heat exchange fluid entering heat exchange channel 4 changes due to variations in the external environment, the flow rate can be adjusted to correct the heat exchange capacity of heat exchange channel 4. This mitigates the change in heat exchange efficiency caused by the temperature adjustment of the heat exchange fluid, thereby correcting the desorption or adsorption time. In this method, the corresponding flow rate correction when the heat exchange fluid temperature changes better prevents excessive fluctuations in desorption or adsorption time, maintaining a stable ratio between the two. This ensures that the entire adsorption refrigeration system can perform desorption and adsorption in an orderly manner, thus better guaranteeing refrigeration efficiency. In summary, this adsorption refrigeration system monitoring method effectively solves the problem of large fluctuations in the ratio of desorption to adsorption time caused by variations in the heat exchange fluid temperature in current adsorption refrigeration systems.

[0042] In some embodiments, in step S100 above, the flow rate of the heat exchange fluid entering the inlet of the heat exchange channel 4 of the pre-set adsorption bed 1 is adjusted. This adjustment can be achieved by adjusting the flow velocity of the heat exchange fluid in the heat exchange channel 4. For example, when it is necessary to increase the flow rate of the heat exchange fluid, the pumping speed can be increased to increase the pressure difference, thereby increasing the flow velocity of the heat exchange fluid in the heat exchange channel 4 and thus improving the heat exchange efficiency. Alternatively, the adsorption bed 1 may have multiple heat exchange channels 4, and the number of open heat exchange channels 4 can be adjusted to adjust the flow rate of the heat exchange fluid entering the entire adsorption bed 1, which can also correct the heat exchange efficiency of the adsorption bed 1. Due to the limited structure of the adsorption bed 1, generally only the pump speed is adjusted, which is more convenient and simple.

[0043] In some embodiments, the temperature fluctuation range of the heat exchange fluid at the inlet of heat exchange channel 4 can be controlled in practical applications. The fluctuation range should not be too large; generally, it should not exceed 10%, and ideally be maintained between 1% and 2%. For example, the temperature range of the heat exchange fluid at the inlet of heat exchange channel 4 is generally within T... d To T d +2%*T d Between, where T d This is generally the lowest temperature value of the heat exchange fluid in practical applications. Therefore, the above-mentioned flow rate adjustment is a fine-tuning, and the effect of fine-tuning is of greater significance for correcting the adsorption and desorption times. However, excessive temperature fluctuations lead to poor overall operation of adsorption bed 1.

[0044] In some embodiments, the adjustable range of the heat source fluid for desorption is limited; therefore, the above-described adsorption refrigeration system monitoring method is more suitable for monitoring the adsorption bed 1 during the adsorption stage. However, when adjusting the cooling fluid for adsorption, the fluctuation range of the cooling fluid is larger, generally exceeding T... d To T d +10%*T d Fluctuations between, and even possibly T d To T d +20%*T d .

[0045] In some embodiments, step S200 is preferred here: adjusting the flow rate of the heat exchange fluid entering the inlet of the heat exchange channel 4 of the preset stage adsorption bed 1 according to the inlet temperature of the heat exchange fluid, so as to correct the heat exchange capacity of the heat exchange channel 4, specifically:

[0046] Step S210: Based on the inlet temperature of the heat exchange fluid, query the pre-stored temperature-flow correspondence table to obtain the target flow rate value.

[0047] The pre-stored temperature and flow rate correspondence table is a data table showing the relationship between the temperature of the heat exchange fluid at the inlet of the heat exchange channel 4 of the pre-set adsorption bed 1 and the flow rate of the heat exchange fluid in the heat exchange channel 4 of the pre-set adsorption bed 1.

[0048] A temperature-flow rate correspondence table is established because, in practical applications, many factors affect heat exchange efficiency, and the relationship between temperature and flow rate is not necessarily strongly correlated; it may also be affected by other factors. Adsorption refrigeration systems are systems with numerous strongly coupled parameters, making it difficult to make a single judgment based on a single system parameter.

[0049] At this point, establishing a temperature-flow rate correspondence table can be based on the characteristics of the current adsorption bed 1. This table can be calculated and established experimentally, making it more representative. Since the data table generally represents data points and lacks continuity, values ​​at this point, being intermediate, can be categorized to the previous or next level without significantly impacting the actual situation, while still providing a corrective effect.

[0050] Specifically, for the cooling fluid used for adsorption, the available cooling fluid for adsorption can be divided into multiple temperature ranges. Then, through experimental methods, the optimal flow rate for each range can be found so that the final adsorption time can be kept in a more stable range. Based on this, the above-mentioned temperature and flow rate correspondence table can be established.

[0051] Step S220: Control the flow rate of the heat exchange fluid at the inlet of the heat exchange channel 4 of the preset stage adsorption bed 1 to reach the target flow rate value.

[0052] A specific control method could be PID regulation to ensure that the optimal flow rate is reached as quickly as possible.

[0053] It should be noted that the above method of obtaining the inlet temperature of the heat exchange fluid can be done in real time, which would require real-time adjustment to the optimal flow rate. However, considering short-term consistency, a judgment can be made at the beginning of each adsorption or desorption phase.

[0054] In some embodiments, for more stable operation, the inlet temperature of the heat exchange fluid should also be monitored. Specifically, after step S100, the method may further include: determining whether the inlet temperature of the heat exchange fluid has reached a preset boundary temperature, and if so, outputting a corresponding result. The corresponding result may be an alarm message or a termination command to stop the operation of the adsorption refrigeration system.

[0055] It should be noted that when it is necessary to judge both the adsorption and desorption stages at the same time, it is also necessary to first determine whether the preset stage is the desorption stage or the adsorption stage, and then select the corresponding preset boundary temperature according to whether it is the adsorption stage or the desorption stage.

[0056] In some embodiments, heat exchange efficiency has a certain relationship with temperature and flow rate, especially when the composition of the heat exchange fluid remains constant.

[0057] Based on this, step S200 above can be specifically described as follows:

[0058] Step S230: Control the flow rate of the heat exchange fluid at the inlet of the heat exchange channel 4 of the pre-set stage adsorption bed 1 to reach the target flow rate value Q2=Q1(T) 11 -T 12 ) / (T 21 -T 22 ), where Q1 is the heat exchange fluid flow rate at the inlet of heat exchange channel 4 of adsorption bed 1 in the preset stage before adjustment; where T 11 To adjust the inlet temperature of the heat exchange fluid in the heat exchange channel 4 of the pre-set adsorption bed 1; where T 12 To adjust the temperature of the heat exchange fluid at the outlet of heat exchange channel 4 of the pre-set adsorption bed 1; where T 21 The temperature of the heat exchange fluid at the inlet of heat exchange channel 4 of adsorption bed 1 in the current preset stage; where T 22 The current preset stage is the heat exchange fluid temperature at the outlet of heat exchange channel 4 of adsorption bed 1.

[0059] Where Q1 is the heat exchange fluid flow rate at the inlet of heat exchange channel 4 of adsorption bed 1 in the preset stage before adjustment, referring to the flow rate at the start of the above control steps. And where T... 11 To adjust the inlet temperature of the heat exchange fluid in the heat exchange channel 4 of the pre-set adsorption bed 1; and where T 12 To adjust the pre-set stage of the heat exchange fluid temperature at the outlet of heat exchange channel 4 of adsorption bed 1, the specific time period can be the previous detection result, which serves as the result before adjustment, while the current detection result is as follows: T 21 And T 22 .

[0060] Specifically, the monitoring method for adsorption refrigeration systems can be as follows:

[0061] Step S110: Obtain the temperature of the heat exchange fluid at the inlet of the heat exchange channel 4 of the pre-set adsorption bed 1, and use it as the heat exchange fluid inlet temperature T. 21 .

[0062] Step S231: Obtain the heat exchange fluid flow rate Q1 at the inlet of heat exchange channel 4 of adsorption bed 1 in the current preset stage; obtain the heat exchange fluid temperature T at the outlet of heat exchange channel 4 of adsorption bed 1 in the current preset stage. 22 .

[0063] Step S232: Control the flow rate of the heat exchange fluid at the inlet of the heat exchange channel 4 of the pre-set stage adsorption bed 1 to reach the target flow rate value Q2=Q1(T)11 -T 12 ) / (T 21 -T 22 ), where T 11 For pre-stored temperature values; and T in them 12 This is for pre-stored temperature values.

[0064] Step S232: Place T 11 Replace the value with T 21 The value of T 12 Replace the value with T 22 The value. Then reverse step S110.

[0065] Even if we get T 11 To adjust the inlet temperature of the heat exchange fluid in the heat exchange channel 4 of the pre-set adsorption bed 1; and where T 12 To adjust the temperature of the heat exchange fluid at the outlet of the heat exchange channel 4 of the pre-set adsorption bed 1.

[0066] Based on the adsorption refrigeration system monitoring method provided in the above embodiments, the present invention also provides an adsorption refrigeration system, which includes an adsorption bed 1, a controller, a control valve, and a temperature sensor. The temperature sensor can acquire the temperature of the heat exchange fluid at the inlet of the heat exchange channel 4 of the adsorption bed 1. The control valve can adjust the flow rate of the heat exchange fluid in the heat exchange channel 4 of the adsorption bed 1. The controller is used to execute the acquired computer program to implement any one of the adsorption refrigeration system monitoring methods in the above embodiments. Since the adsorption bed 1 adopts the adsorption refrigeration system monitoring method in the above embodiments, the beneficial effects of the adsorption bed 1 are explained in the above embodiments.

[0067] The adsorption chamber of adsorption bed 1 is equipped with an adsorbent, and the working fluid used in conjunction with the adsorbent flows through the adsorption chamber and the condensation chamber of condenser 2, and also flows through evaporator 3. The working fluid and adsorbent combine to form a working fluid pair. In an adsorption refrigeration system, multiple working fluid pairs can be provided. One adsorbent can be paired with different working fluids, or multiple adsorbents can be paired with one working fluid. A typical adsorption refrigeration system includes the aforementioned adsorption bed 1, evaporator 3, and condenser 2.

[0068] For adsorption bed 1, there are two main working states: adsorption and desorption, which are generally carried out in stages. In the adsorption state, a low-temperature fluid, i.e., a cooling fluid for adsorption, is used to cool adsorption bed 1, allowing the adsorbent within bed 1 to adsorb the gaseous working medium, ensuring continuous adsorption capacity in the adsorption chamber until the adsorbent reaches a preset saturation state. Taking physical adsorption as an example, the gaseous working medium liquefies into a liquid state, maintaining a low-pressure state within the adsorption chamber to continuously draw in gaseous working medium, such as continuously adsorbing the gaseous working medium from evaporator 3, allowing evaporator 3 to continuously absorb heat through evaporation. In the desorption state, a high-temperature fluid, i.e., a heat exchange fluid for desorption, is generally used to heat adsorption bed 1, causing the working medium within the adsorbent to desorb from the adsorbent, re-forming into a gaseous state. This gaseous working medium then enters condenser 2, where it liquefies into a liquid state. The evaporator 3 and condenser 2 can be the same structure to alternately perform evaporation and condensation; or they can be two structures, as shown in the attached figure. When there are two adsorption beds 1, the two adsorption beds 1 alternately perform desorption and adsorption. At this time, the adsorption time and desorption time are approximately equal. In this case, two structures can be used as the evaporator 3 and condenser 2, respectively.

[0069] The adsorption bed 1 has a heat exchange channel 4 for heat exchange with the adsorbent in the adsorption chamber. This heat exchange channel 4 is a channel capable of carrying at least a high-temperature fluid (heat source fluid), so that a high-temperature fluid flows through it during the desorption phase of the adsorption bed 1. During the adsorption phase, the heat exchange channel 4 can be closed or used to carry a low-temperature fluid. The heat exchange channel 4 can exchange heat with the adsorbent, so that during the desorption phase, a high-temperature fluid flows through it, keeping the entire adsorption chamber at a high temperature. After absorbing heat, the adsorbent desorbs a gaseous adsorbent, which absorbs heat from the high-temperature fluid in the heat exchange channel 4. This gaseous adsorbent can be discharged to the outside or into the condensation chamber of the condenser 2, where it is condensed back into a gaseous adsorbent.

[0070] The control valve is typically a three-way valve, used to alternately introduce the cooling fluid for adsorption and the heat exchange fluid for desorption. Alternatively, multiple three-way valves can be installed to correspond to multiple adsorption beds 1, so that the cooling fluid for adsorption and the heat exchange fluid for desorption are alternately introduced into each adsorption bed 1.

[0071] Based on the adsorption refrigeration system monitoring method provided in the above embodiments, the present invention also provides a computer-readable storage medium for storing a computer program, which, when executed by a processor, implements any one of the adsorption refrigeration system monitoring methods in the above embodiments. Since this computer-readable storage medium employs the adsorption refrigeration system monitoring method in the above embodiments, the beneficial effects of this computer-readable storage medium are explained in the above embodiments.

[0072] Based on the adsorption refrigeration system monitoring method provided in the above embodiments, the present invention also provides a computer program product, which includes a computer program / instructions. When executed by a processor, the computer program / instructions implement any one of the adsorption refrigeration system monitoring methods in the above embodiments. Since this computer program product employs the adsorption refrigeration system monitoring method in the above embodiments, the beneficial effects of this computer program product are explained in the above embodiments.

[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of monitoring an adsorption refrigeration system, characterized in that Includes the following steps: The temperature of the heat exchange fluid at the inlet of the heat exchange channel (4) of the adsorption bed (1) in the preset stage is obtained as the inlet temperature of the heat exchange fluid. The preset stage is either the desorption stage or the adsorption stage. Based on the inlet temperature of the heat exchange fluid, the flow rate of the heat exchange fluid entering the heat exchange channel (4) of the preset stage adsorption bed (1) is adjusted accordingly to correct the heat exchange capacity of the heat exchange channel (4).

2. The adsorption refrigeration system monitoring method of claim 1, wherein, The adjustment of the heat exchange fluid flow rate at the inlet of the heat exchange channel (4) of the adsorption bed (1) entering the preset stage is to adjust the flow rate of the heat exchange fluid in the heat exchange channel (4).

3. The adsorption refrigeration system monitoring method of claim 2, wherein, The step of adjusting the flow rate of the heat exchange fluid entering the pre-set adsorption bed (1) at the inlet of the heat exchange channel (4) according to the inlet temperature of the heat exchange fluid, in order to correct the heat exchange capacity of the heat exchange channel (4), includes: Based on the inlet temperature of the heat exchange fluid, the target flow rate value is obtained by querying the pre-stored temperature-flow rate correspondence table. The flow rate of the heat exchange fluid at the inlet of the heat exchange channel (4) of the pre-set adsorption bed (1) is controlled to reach the target flow rate value.

4. The adsorption refrigeration system monitoring method of claim 3, wherein, Also includes: Determine whether the inlet temperature of the heat exchange fluid has reached the preset boundary temperature; if so, output the corresponding result.

5. The adsorption refrigeration system monitoring method of claim 4, wherein, The corresponding results include alarm information.

6. The adsorption refrigeration system monitoring method of claim 5, wherein, The step of adjusting the flow rate of the heat exchange fluid at the inlet of the heat exchange channel (4) entering the pre-set adsorption bed (1) based on the difference between the inlet temperature of the heat exchange fluid and the preset temperature includes: Controlling the flow rate of the heat exchange fluid at the inlet of the heat exchange channel (4) of the pre-set adsorption bed (1) to reach the target flow rate value Q2=Q1(T) 11 -T 12 ) / (T 21 -T 22 ), where Q1 is the heat exchange fluid flow rate at the inlet of the heat exchange channel (4) of the pre-adsorption bed (1) before adjustment; where T 11 To adjust the temperature of the heat exchange fluid at the inlet of the heat exchange channel (4) of the pre-set adsorption bed (1); where T 12 To adjust the temperature of the heat exchange fluid at the outlet of the heat exchange channel (4) of the pre-set adsorption bed (1); where T 21 The temperature of the heat exchange fluid at the inlet of the heat exchange channel (4) of the adsorption bed (1) in the current preset stage; where T 22 The temperature of the heat exchange fluid at the outlet of the heat exchange channel (4) of the adsorption bed (1) in the current preset stage.

7. The adsorption refrigeration system monitoring method according to any one of claims 1-6, characterized in that, The heat exchange fluid includes a cooling fluid for adsorption, and the preset stage includes an adsorption stage.

8. A sorption refrigeration system comprising a sorption bed (1); characterized in that It also includes a controller, a control valve, and a temperature sensor, wherein the temperature sensor is capable of acquiring the temperature of the heat exchange fluid at the inlet of the heat exchange channel (4) of the adsorption bed (1), the control valve is capable of adjusting the flow rate of the heat exchange fluid in the heat exchange channel (4) of the adsorption bed (1), and the controller is used to execute the acquired computer program to implement the adsorption refrigeration system monitoring method as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, Used to store a computer program, which, when executed by a processor, implements the adsorption refrigeration system monitoring method as described in any one of claims 1 to 8.

10. A computer program product comprising computer programs / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the adsorption refrigeration system monitoring method according to any one of claims 1 to 8.

Images