Air conditioning system, heat recovery temperature regulation and control method and scientific investigation ship

Abstract

The invention relates to the technical field of shipborne equipment, and discloses an air conditioning system, a heat recovery temperature regulation and control method and a scientific investigation ship, the air conditioning system comprises an air conditioning module, the air conditioning module comprises a first air conditioner and a second air conditioner, and first air outlets of the output end of the first air conditioner are formed in different laboratories; second air outlets of the output end of the second air conditioner are formed in a plurality of intervals of the clean room. The cooling module is connected with the first air conditioner and the second air conditioner. The heat recovery module comprises a cooling water assembly, a heat recovery device and a heat accumulator. The cooling water assembly and the heat accumulator are both connected with the air conditioner module. Two ends of the heat recovery device are respectively connected with the cooling water assembly and the heat accumulator, and the heat recovery device is in heat exchange connection with the cooling module; the first air conditioner and the second air conditioner are arranged, so that the air cleanliness in the clean room can be improved, and the scientific research efficiency is improved; and the heat recovery module can absorb and store heat of the cooling module, so that the energy consumption of the laboratory air conditioning system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shipborne equipment, in particular to an air conditioning system, a heat recovery temperature regulation method and a scientific research ship. BACKGROUND

[0002] With the increasing improvement of the construction level of scientific research ships, the diversification trend of ship laboratories is becoming more and more obvious. As an important place for various experiments and researches on ships, the internal environment of the laboratory directly affects the accuracy of experimental results and the health of experimental personnel. In order to better serve scientists to conduct scientific experiments and research, facilitate scientists to analyze data of collected samples in real time, and other scientific researches, higher requirements are needed for the control system of factors affecting the laboratory environment such as temperature, humidity, air flow, cleanliness and energy saving.

[0003] However, the current shipborne laboratory air conditioning system lacks special research on multi-disciplinary complex experimental environment, and has many outstanding problems. On the one hand, it cannot meet the air cleanliness requirements of some special laboratories; on the other hand, the current ship central air conditioning system does not use a heat recovery system, which has high energy consumption, and seriously affects and restricts the development and efficiency of the shipborne laboratory scientific research work. SUMMARY

[0004] The technical problem to be solved by the present application is how to solve the problems of low air cleanliness of the shipborne laboratory and excessive energy consumption of the laboratory air conditioner, and how to accurately regulate the temperature of the laboratory. In order to solve the above technical problems, the present application provides an air conditioning system, a heat recovery temperature regulation method and a scientific research ship, which comprises an air conditioning module, a cooling module and a heat recovery module. The air conditioning module comprises a first air conditioner and a second air conditioner. The output end of the first air conditioner is connected in parallel with a plurality of first air outlets, and the plurality of first air outlets are arranged in different laboratories. The output end of the second air conditioner is connected in parallel with a plurality of second air outlets, and the plurality of second air outlets are arranged in different laboratories. The cooling module is connected to the first air conditioner and the second air conditioner, and is used to output and drive the refrigerant water to circulate between the first air conditioner, the second air conditioner and the cooling module. The heat recovery module comprises a cooling water assembly, a heat recovery device and a heat accumulator. The cooling water assembly is connected to the first air conditioner and the second air conditioner. The heat accumulator is connected to the first air conditioner and the second air conditioner. The heat recovery device is connected to the cooling water assembly and the heat accumulator at both ends. The heat recovery device is in heat exchange connection with the cooling module. The cooling water assembly is used to output and drive the cooling water to circulate between the heat recovery device, the heat accumulator, the first air conditioner and the second air conditioner.

[0005] Preferably, a constant pressure module is further included, an input end of the constant pressure module is connected with the first air conditioner and the second air conditioner, and an output end of the constant pressure module is connected with the cooling module, and the constant pressure module is used for adjusting and maintaining the pressure of the refrigerant water delivered by the air conditioning module to the cooling module.

[0006] Preferably, the first air outlet is connected with a variable air volume air distributor, and the second air outlet is integrally provided with a high-efficiency filter, a static pressure tank, a diffuser plate and an air volume adjusting valve.

[0007] Preferably, the first air conditioner sequentially comprises a first air inlet section, a first filter section, a first heating section, a first refrigeration section, a first air supply section and a first humidification section along the direction of the fresh air outlet. The first air inlet section is provided with an air adjusting door; the first filter section is provided with a plate filter and a differential pressure sensor; the first refrigeration section is provided with a refrigeration coil, both ends of the refrigeration coil being connected with the cooling module and the constant pressure module respectively; the first heating section is provided with a heating coil, both ends of the heating coil being connected with the heat accumulator and the cooling water assembly respectively; the first humidification section is provided with an electric heating humidifier; and the first air supply section is provided with a fan, a motor and a sterilization device.

[0008] Preferably, the second air conditioner sequentially comprises a second air inlet section, a second filter section, a pre-heating section, a second refrigeration section, a second heating section, a second humidification section, a second air supply section, a sound reduction section and a third filter section along the direction of the fresh air outlet. The second air inlet section is provided with an air adjusting door; the second filter section is provided with a primary filter and a differential pressure sensor; the pre-heating section and the second heating section are both provided with a heating coil, both ends of the heating coil being connected with the heat accumulator and the cooling water assembly respectively; the second refrigeration section is provided with a refrigeration coil, both ends of the refrigeration coil being connected with the cooling module and the constant pressure module respectively; the second humidification section is provided with an electric heating humidifier; the second air supply section is provided with a fan and a motor; the sound reduction section is provided with a sound reduction sheet; and the third filter section is provided with a medium filter and a sterilization device.

[0009] Preferably, the cooling module comprises a plurality of cold water units arranged in parallel, and each cold water unit comprises a compressor, a condenser and an evaporator.

[0010] Preferably, the cooling water assembly comprises a shipborne central cooling system. The heat recovery device comprises a cooling water pipe, the cooling water pipe is arranged in close contact with the condenser, and both ends of the cooling water pipe are connected with the central cooling system and the heat accumulator respectively. The heat accumulator is provided with a heat phase change material.

[0011] Preferably, multiple clean rooms are arranged in parallel.

[0012] The present invention also provides a heat recovery temperature control method, which uses an air conditioning system as described above, including the following steps: S1. After the system is powered on, the sensor signal is checked to see if it is normal, and the first valve and the second valve are closed, the third valve is opened, and the first circulation pump and the second circulation pump are opened at the same time, and the first circulation pump and the second circulation pump are put into standby mode. The first valve is located between the heat recovery device and the heat accumulator, the second valve is located between the heat accumulator and the air conditioning module, and the third valve is a bypass valve; the first circulating pump is located between the heat recovery device and the heat accumulator, and the second circulating pump is located between the heat accumulator and the air conditioning module. S2. The controller acquires sensor signals and compares them with corresponding preset values. Based on the different signal data comparison results, it selects and switches between different working modes. The sensor signals include the inlet temperature T1 and outlet temperature T2 of the cooling water in the heat recovery unit, the inlet temperature T3 and outlet temperature T4 of the cooling water in the heat accumulator, the inlet temperature T5 of the cooling water in the air conditioning module, the outlet temperature T6 of the cooling water in the air conditioning module, and the temperature T of the phase change material in the heat accumulator. P Cooling water flow rate F1 at the inlet of the heat accumulator and cooling water flow rate F2 at the inlet of the air conditioning module; S3. When the value of T2 obtained by the controller is not less than the first preset value, and T P If the value is less than the second preset value and the controller does not receive a heating command from the air conditioning module, the heat storage mode will be activated. S4. When the controller receives the heating command from the air conditioning module, and T P When the value is not less than the third preset value, the heat dissipation mode is activated; S5, when the T2 value obtained by the controller is not less than the first preset value, and T P When the value is less than the second preset value and the controller receives a heating command from the air conditioning module, the hybrid mode S6 is activated. P If the value is less than the fourth preset value, or if there is a system malfunction, the bypass mode will be activated.

[0013] Preferably, the heat storage mode includes the following steps: S31. Open the first valve, close the third valve, and start the first circulation pump. Cooling water circulates between the heat recovery device and the heat accumulator. S32, The controller continuously acquires and monitors the values ​​of T2 and T. P Numerical value; S33, When the controller detects T P If the value is not less than the fifth preset value or the T2 value is less than the first preset value, then the first valve is closed, heat storage is paused, and the system enters standby mode. S34, the controller continues to monitor whether the air conditioning module has heating instructions, if the heating instructions of the air conditioning module are received, the heat release mode is preferentially switched to.

[0014] Preferably, the heat release mode comprises the following steps: S41, open the second valve, close the third valve, start the second circulating pump, and the cooling water is transported from the heat accumulator to the air conditioning module; S42, the controller continues to acquire and monitor T P value and T6 value; S43, when the controller monitors that T P value is less than the third preset value or T6 value is not less than the sixth preset value, the second circulating pump is closed, the heat release is suspended, and standby is entered; S44, the controller continues to monitor T2 value and T P value, and T P value is less than the second preset value, the mixed mode is preferentially switched to.

[0015] Preferably, the mixed mode comprises the following steps: S51, open the first valve and the second valve, close the third valve, start the first circulating pump and the second circulating pump, and the cooling water circulates between the heat recovery device, the heat accumulator, the air conditioning module and the cooling water assembly; S52, the controller continues to adjust the opening of the first valve and the second valve, monitors the difference between T p value and T5 value is greater than the first preset temperature difference, the opening of the second circulating pump is increased to reduce the temperature difference and maintain the operation of the mixed mode; S53, the controller monitors whether the difference between T p value and T5 value is less than the second preset temperature difference, if it is not less than the second preset temperature difference, the operation of the mixed mode is maintained, if it is less than the second preset temperature difference, the opening of the first circulating pump is increased, and whether the difference between T p value and T5 value is greater than the first preset temperature difference is judged again.

[0016] Preferably, the bypass mode comprises the following steps: S61, open the third valve, close the first valve and the second valve, and the cooling water in the heat recovery device and the air conditioning module returns to the cooling water assembly through the bypass circuit; S62, trigger a fault alarm, the controller records a fault code, and waits for manual reset.

[0017] Preferably, when T P value is greater than the seventh preset value or any sensor monitors that the cooling water temperature is greater than the eighth preset value, all valves are forced and the cooling fan is started; When F1 or F2 is less than a ninth preset value of the rated flow, an alarm is triggered, and a bypass mode is switched to; When the ambient temperature is lower than a tenth preset value, the electric heat tracing is started to maintain the pipeline temperature.

[0018] The application also provides a research vessel provided with the air conditioning system and using the heat recovery temperature control method.

[0019] The air conditioning system, the heat recovery temperature control method and the research vessel have the beneficial effects that: In the embodiment, the first air conditioner and the second air conditioner are respectively arranged for the ordinary laboratory and the clean room, so that the air cleanliness in the clean room can be separately adjusted and controlled, which is different from other ordinary laboratories, so as to meet the requirements of special experiments on air cleanliness, and improve the research efficiency; the heat recovery module can absorb and store the heat absorbed by the cooling module when the laboratory is cooled into the heat accumulator, so as to provide heat for the first air conditioner and the second air conditioner when the laboratory needs to be heated in the subsequent experiment, realize the recycling of heat energy, avoid the loss of heat, reduce the energy consumption of the laboratory air conditioning system, and more accurately control the temperature of each laboratory. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a connection diagram of the air conditioning system of the application; Figure 2 is a structure diagram of the first air conditioner of the application; Figure 3 is a structure diagram of the second air conditioner of the application; Figure 4 is a connection diagram of the application for heat recovery by using cooling water; Figure 5 is a principle diagram of the heat recovery of the application; Figure 6 is a logic diagram of the heat storage mode of the application; Figure 7 is a logic diagram of the heat release mode of the application; Figure 8 is a logic diagram of the mixed mode of the application; Figure 9 is a logic diagram of the bypass mode of the application.

[0021] In the diagram: 1. Air conditioning module; 11. First air conditioner; 111. First air intake section; 112. First filter section; 113. First heating section; 114. First cooling section; 115. First air supply section; 116. First humidification section; 12. Second air conditioner; 121. Second air intake section; 122. Second filter section; 123. Preheating section; 124. Second cooling section; 125. Second heating section; 126. Second humidification section; 127. Second air supply section; 128. Silencing section; 129. Third filter section; 13. First air outlet; 14. Second air outlet 2. Cooling module; 21. Chiller unit; 3. Heat recovery module; 31. Cooling water assembly; 32. Heat recovery device; 33. Heat accumulator; 34. First valve; 35. Second valve; 36. Third valve; 37. First circulation pump; 38. Second circulation pump; 4. Pressure stabilizing module; 5. Laboratory; 6. Clean room. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0023] like Figures 1 to 5 As shown, a preferred embodiment of the present invention provides an air conditioning system, a heat recovery temperature control method, and a research vessel, which includes an air conditioning module 1, a cooling module 2, and a heat recovery module 3. The air conditioning module 1 includes a first air conditioner 11 and a second air conditioner 12. The output end of the first air conditioner 11 is connected in parallel with multiple first air outlets 13, which are respectively located in different laboratories 5. The output end of the second air conditioner 12 is connected in parallel with multiple second air outlets 14, which are respectively located in multiple sections of the clean room 6. The cooling module 2 is connected to the first air conditioner 11 and the second air conditioner 12 respectively. The cooling module 2 is used to output and drive the chilled water to circulate between the first air conditioner 11, the second air conditioner 12 and the cooling module 2. The heat recovery module 3 includes a cooling water assembly 31, a heat recovery device 32, and a heat storage device 33. The cooling water assembly 31 is connected to the first air conditioner 11 and the second air conditioner 12. The heat storage device 33 is connected to the first air conditioner 11 and the second air conditioner 12. The two ends of the heat recovery device 32 are respectively connected to the cooling water assembly 31 and the heat storage device 33. The heat recovery device 32 is connected to the cooling module 2 for heat exchange. The cooling water assembly 31 is used to output and drive the cooling water to circulate between the heat recovery device 32, the heat storage device 33, the first air conditioner 11, and the second air conditioner 12.

[0024] The air conditioning system used in the traditional shipborne laboratory 5 is mostly a constant air volume central air conditioning system, which does not set different air conditioners for different laboratories 5, resulting in that the air cleanliness of some laboratories 5 cannot meet the requirements, and the temperature of each laboratory 5 cannot be automatically controlled, which seriously affects the normal progress of scientific experiments, and a large amount of waste heat is generated in the process of temperature control of the laboratory 5, which is not fully utilized, resulting in high energy consumption of the air conditioning of the shipborne laboratory 5.

[0025] In the embodiment, the first air conditioner 11 and the second air conditioner 12 are respectively arranged in different laboratories 5 according to different level requirements, wherein the plurality of first air outlets 13 of the first air conditioner 11 are arranged in parallel and arranged in different laboratories 5, the first air conditioner 11 can meet the air cleanliness requirements of most ordinary laboratories 5 to meet the normal progress of most ordinary scientific experiments, and the plurality of second air outlets 14 of the second air conditioner 12 are also arranged in parallel, but the plurality of second air outlets 14 are arranged in different areas of the clean room 6 with special requirements to provide higher air cleanliness for the clean room 6. Of course, a third air conditioner can also be arranged in other embodiments, which can be used for ventilation of crew rooms, dining rooms, engine rooms and other rooms on the ship. In addition, in a specific embodiment, the ordinary laboratory 5 includes a microbiology laboratory 5, an organic geochemistry laboratory 5, an inorganic geochemistry laboratory 5, a basic geology laboratory 5, etc., and the clean room 6 includes a changing room, a buffer room and an experiment room and other areas. In addition, the ventilation system is also connected to each laboratory 5 and different areas of the clean room 6, which can continuously guide the air in each laboratory 5 and the clean room 6 to the outside to ensure that the indoor air is in a flowing state, thereby ensuring that the air cleanliness meets the requirements. Finally, the cooling water assembly 31 can be arranged in a box in some embodiments for storing cooling water to be used, and in another specific embodiment, the cooling water assembly 31 can be a central cooling system on the ship, which provides functions of storage, output, filtration and recovery of cooling water.

[0026] In some embodiments, the constant pressure module 4 is further provided, the input end of the constant pressure module 4 is connected with the first air conditioner 11 and the second air conditioner 12, and the output end of the constant pressure module 4 is connected with the cooling module 2. The constant pressure module 4 is used to adjust and maintain the pressure of the refrigerant water delivered from the air conditioning module 1 to the cooling module 2.

[0027] Specifically, the large amount of heat absorbed by the chilled water after passing through the first air conditioner 11 and the second air conditioner 12 respectively changes the pressure state of the chilled water. If the chilled water is directly fed back to the cooling module 2, pressure fluctuation in the chilled water pipeline is likely to occur, which in turn causes damage to the chilled water pipeline and valves. Therefore, it is necessary to set a pressure regulating device. The basic function of the pressure regulating device is to maintain a constant working pressure of the chilled water by absorbing or releasing the liquid or gas in the chilled water pipeline, thereby avoiding large pressure fluctuation caused by temperature change, preventing system overpressure such as expansion of the cooling liquid due to heating or negative pressure such as contraction of the liquid cooling, and protecting the system pipeline and valve. The pressure regulating device adjusts the volume change of the chilled water, maintains the circulating pressure, compensates for the volume expansion or contraction of the medium due to temperature change, ensures the system airtightness, reduces the loss of medium or air entry, realizes the pressure regulation, water replenishment and air exhaust of the chilled water system, and mainly includes a chilled water pump, a closed pressure regulating expansion tank, a spiral blow-off and air exhaust device, a water collector, a water distributor, an isolation water replenishment meter, and corresponding valves, accessories, etc. The first air conditioner 11 and the second air conditioner 12 in the embodiment are connected to the pressure regulating device. After the pressure of the chilled water is stabilized by the pressure regulating device, the chilled water is fed to the cooling module 2 to complete the circulation of the chilled water.

[0028] In some embodiments, the first air outlet 13 is connected with a variable air volume air distributor, and the second air outlet 14 is integrated with a high-efficiency filter, a static pressure tank, a diffuser plate and an air volume regulating valve.

[0029] Specifically, the air conditioning air output by the first air conditioner 11 will pass through the fire damper and the air register in sequence, and then be dispersed to different first air outlets 13, and the dispersed air conditioning air will pass through the VAV valve and the silencer before being introduced into different laboratories 5 through the variable air volume air distributor. The air conditioning air output by the second air conditioner 12 will first pass through the fire damper, the air register, the VAV valve, and the silencer, and then be dispersed to different areas of the clean room 6 through the second air outlet 14, and high-efficiency filters and ozone sterilization devices are integrated at the end of each second air outlet 14. The ozone sterilization device and the high-efficiency filter can be provided with a device, and the ozone sterilization device can also be integrated with an ultraviolet sterilization device. In addition, the variable air volume air valve is a device for adjusting the air flow in the air conditioning or ventilation system, which is composed of a valve body, a motor, temperature and humidity sensors, and pressure sensors. The variable air volume air distributor includes a programmable comfort controller, an electric air valve, a temperature sensor, a pressure sensor, an electric heating element, and a controller. In actual use, the variable air volume air valve and the variable air volume air distributor cooperate with the PLC controller and multiple temperature sensors and pressure sensors to accurately control the temperature and air flow in the laboratory 5, maintain the stability of the temperature in the laboratory 5, and adjust the speed of the fan in the first air conditioner 11 or the second air conditioner 12, thereby ensuring the stability of the air supply pressure in the air duct and avoiding excessive fluctuations in air pressure and interference between air flows in different air ducts.

[0030] In some embodiments, the first air conditioner 11 includes a first air inlet section 111, a first filter section 112, a first heating section 113, a first refrigeration section 114, a first air supply section 115, and a first humidification section 116 in sequence along the fresh air outlet direction. The first air inlet section 111 is provided with an air register; the first filter section 112 is provided with a plate filter and a differential pressure sensor; the first refrigeration section 114 is provided with a refrigeration coil, the two ends of which are connected to the cooling module 2 and the constant pressure module 4, respectively; the first heating section 113 is provided with a heating coil, the two ends of which are connected to the heat accumulator 33 and the cooling water assembly 31, respectively; the first humidification section 116 is provided with an electric heating humidifier; and the first air supply section 115 is provided with a fan, a motor, and a sterilization device.

[0031] Specifically, the first air conditioner 11 adopts a marine indirect variable air volume air conditioner, the main structure of which is composed of a panel and a frame structure, and the interlayer of the panel is provided with intermediate rock wool. In addition to being able to play a noise reduction effect, it can also inhibit the loss of heat, ensure the temperature of the space, reduce the use of air conditioners, and save energy. The first filter section 112 and the first air supply section 115 are both provided with removable maintenance doors to facilitate subsequent maintenance. The air adjustment door of the air inlet section can adjust the amount of air sucked in by the first air conditioner 11. When multiple laboratories 5 require ventilation, the opening of the air adjustment door can be increased, and when the demand is small, the size of the air adjustment door can be adjusted to reduce the air intake and achieve the purpose of energy saving. The panel filter can use a conventional medium-efficiency filter or a high-efficiency filter, and the differential pressure sensor can monitor the gas pressure difference on both sides of the panel filter. When the pressure difference is too large, it indicates that the panel filter is severely clogged, and the differential pressure sensor can automatically alarm to remind the staff to maintain. The refrigeration coil has low-temperature refrigerant water flowing out of the cooling module 2 inside, and copper fins are provided thereon. When the air passes through the refrigeration coil, the refrigerant water can absorb heat to reduce the temperature of the gas, so that the first air conditioner 11 can blow cold air. The used refrigerant water flows to the constant pressure module 4 after warming up to stabilize the pressure. The heating coil in the first heating section 113 has high-temperature cooling water flowing out of the heat accumulator 33. The air can be heated when passing through the high-temperature cooling water, so that the first air conditioner 11 can blow hot air. The cooled cooling water flows back to the central cooling system of the cooling water assembly 31. Of course, in actual use, the flow of low-temperature refrigerant water and high-temperature cooling water is controlled by valves according to actual heating or refrigeration needs, so as to realize stable refrigeration or heating. The electric heating humidifier in the first humidification section 116 is a conventional technology and will not be described in detail. The motor in the first air supply section 115 can drive the fan to operate, so that fresh air from the outside can be continuously sucked in, so that the fresh air from the outside can pass through the first filter section 112 and the first refrigeration section 114 and the first heating section in turn, so as to realize air filtration and refrigeration or heating. Finally, the disinfection device is used for disinfection treatment, wherein the disinfection device adopts a photocatalyst sterilization and disinfection device to realize long-term and continuous sterilization.

[0032] In some embodiments, the second air conditioner 12 includes a second air inlet section 121, a second filter section 122, a pre-heating section 123, a second refrigeration section 124, a second heating section 125, a second humidification section 126, a second air supply section 127, a sound attenuation section 128, and a third filter section 129 in sequence along the fresh air outlet direction. The second air inlet section 121 is provided with an air adjusting door; the second filtering section 122 is provided with a primary filter and a differential pressure sensor; the pre-heating section 123 and the second heating section 125 are both provided with heating coils, the two ends of the heating coils are connected with the heat accumulator 33 and the cooling water assembly 31 respectively; the second refrigeration section 124 is provided with a refrigeration coil, the two ends of the refrigeration coil are connected with the cooling module 2 and the constant pressure module 4 respectively; the second humidification section 126 is provided with an electric heating humidifier; the second air supply section 127 is provided with a fan and a motor; the sound reduction section 128 is provided with sound reduction sheets; and the third filtering section 129 is provided with a medium efficiency filter and a sterilization device.

[0033] Specifically, in the embodiment, since the second air conditioner 12 has a higher requirement on the cleanliness of the output air than the first air conditioner 11, the second air conditioner 12 is provided with two filtering sections compared with the first air conditioner 11, wherein the second filtering section 122 adopts a primary filter with a filtering level of G4, and the third filtering section 129 adopts a medium efficiency filter with a filtering level of G7, which is matched with the high efficiency filter integrated at the second air outlet 14, so as to effectively include the cleanliness of the air entering each area of the clean room 6. Among them, the second filtering section 122 and the third filtering section 129 are also provided with differential pressure sensors, which can detect the state of the second filtering section 122 and the third filtering section 129.

[0034] In addition, the second air conditioner 12 is additionally provided with a sound reduction section 128 and a pre-heating section 123, wherein the sound reduction section 128 is provided with sound reduction sheets to reduce the noise generated by the second air conditioner 12 during operation, so as to avoid the adverse effects of the noise on the clean room 6. The pre-heating section 123 is also provided with a heating coil, and high-temperature cooling water also flows in the heating coil, which can pre-heat the air, thereby improving the heating efficiency of the second air conditioner 12. The cooling water after use is returned to the shipborne central cooling system for subsequent use.

[0035] In some embodiments, the cooling module 2 includes a plurality of cold water units 21 arranged in parallel, and the cold water unit 21 includes a compressor, a condenser and an evaporator. The cold water unit 21 provides refrigerant water for the refrigeration section of the air conditioner, and transfers the heat absorbed by the cooling water to the cooling water. In actual use, the air conditioner load is determined according to the number and area size of the laboratory 5, and then a different number of cold water units are set, each cold water unit bears part of the load, and the heat in the cold water unit is transferred to the cooling water through the heat recovery device 32. After the cooling water recovers the heat in the cold water unit 21, the heat is transported to the heat accumulator 33 for storage for subsequent air conditioning heating use.

[0036] In some embodiments, the cooling water assembly 31 includes a shipborne central cooling system. The heat recovery device 32 comprises a cooling water pipe which is arranged in close contact with the condenser, and two ends of the cooling water pipe are connected with the central cooling system and the heat accumulator 33 respectively; The heat accumulator 33 is provided with a heat phase change material.

[0037] In the embodiment, the cooling water assembly 31 is a shipborne central cooling system which is also used for cooling and temperature reduction of other equipment on the ship, so that the overall structure is simpler and the cost is lower; in other embodiments, the cooling water storage device and the output device can be separately arranged for the air conditioner system of the laboratory 5, so as to ensure the stability and reliability of heat recovery and heat output of the air conditioner system. The phase change material in the heat accumulator 33 can be paraffin or hydrated salt in the embodiment.

[0038] In some embodiments, the clean room 6 is provided in parallel with multiple clean rooms. According to actual requirements, the shipborne clean room 6 is often provided with multiple clean rooms, so as to meet the simultaneous performance of more scientific research work, and the second air outlet 14 connected with the second air conditioner 12 is also provided with multiple second air outlets, and the second air conditioner 12 can also be provided with multiple second air conditioners if necessary.

[0039] Referring to Figure 4 and Figure 5 , the application further provides a heat recovery temperature regulation method, which adopts the air conditioner system as described above, and has the following steps: S1, after the system is powered on, it is detected whether the sensor signal is normal, the first valve 34 and the second valve 35 are closed, the third valve 36 is opened, the first circulating pump 37 and the second circulating pump 38 are opened, and the first circulating pump 37 and the second circulating pump 38 are in standby state; The first valve 34 is located between the heat recovery device 32 and the heat accumulator 33, the second valve 35 is located between the heat accumulator 33 and the air conditioner module 1, and the third valve 36 is a bypass valve; the first circulating pump 37 is located between the heat recovery device 32 and the heat accumulator 33, and the second circulating pump 38 is located between the heat accumulator 33 and the air conditioner module 1; S2, the controller acquires the sensor signal, compares the acquired sensor signal with the corresponding preset value, and selects different working modes according to the comparison result of the signal data; The sensor signal comprises the cooling water inlet temperature T1 of the heat recovery device 32, the cooling water outlet temperature T2 of the heat recovery device 32, the cooling water inlet temperature T3 of the heat accumulator 33, the cooling water outlet temperature T4 of the heat accumulator 33, the cooling water inlet temperature T5 of the air conditioner module 1, the cooling water outlet temperature T6 of the air conditioner module 1, the phase change material temperature T of the heat accumulator 33, the cooling water flow F1 at the inlet of the heat accumulator 33 and the cooling water flow F2 at the inlet of the air conditioner module 1. P ​S3, when the T2 value obtained by the controller is not less than the first preset value, and T P the second preset value, and the controller does not receive the heating instruction of the air conditioning module 1, the heat storage mode is started; S4, when the controller receives the heating instruction of the air conditioning module 1, and T P the third preset value, the heat release mode is started; S5, when the T2 value obtained by the controller is not less than the first preset value, and T P the second preset value, and the controller receives the heating instruction of the air conditioning module 1, the mixed mode is started S6, when T P the fourth preset value, or the system fails, the bypass mode is started.

[0040] Specifically, in the embodiment, the temperature of the air conditioning wind output by the first air conditioner 11 and / or the second air conditioner 12 can be more accurately regulated based on the air conditioning system. In step S1, first, a self-checking program is performed to detect whether each sensor, valve, pump body and the like is in a normal state, the first valve 34 from the heat recovery device 32 to the heat accumulator 33 and the second valve 35 from the heat accumulator 33 to the air conditioning module 1 are closed, and the bypass valve is opened, wherein the bypass valve is located between the output end of the heat recovery device 32 and the cooling water assembly 31, and can directly output the high-temperature cooling water of the heat recovery device 32 to the shipborne central cooling system for cooling.

[0041] In step S2, the controller can determine whether to switch to a different working mode according to the different sensor data signals obtained, wherein the sensor signals are monitored by flow sensors or temperature sensors not arranged at different positions, and in addition to the sensors for detecting the above signals, a plurality of pressure sensors are arranged, which are mainly used to monitor the pipeline pressure in the entire cooling water system to prevent overpressure or leakage. In the actual determination process, the temperature detected by the temperature sensor is combined with the heating demand to determine and switch the working mode, which is roughly divided into four modes: heat storage mode, heat release mode, mixed mode and bypass mode. The heat storage mode is used when the air conditioning module 1 has no heating demand and the temperature of the heat accumulator 33 is low and not enough heat is accumulated for subsequent use. The heat release mode is used when the air conditioning module 1 has a heating demand and the temperature of the heat accumulator 33 meets certain requirements, so that the heat in the heat accumulator 33 can be quickly transported to the heating section of the first air conditioner 11 and the second air conditioner 12 of the air conditioning module 1 through the cooling water, thereby achieving heating. The heating demand refers to the indoor temperature being lower than the set value, or the heating signal being sent by the staff through the remote controller or the control panel, etc. The mixed mode is used when the heat accumulator 33 meets the heat release condition and the heat storage condition at the same time, and receives the heating instruction, so that the heat storage and heat release are carried out at the same time. The bypass mode is used when the cooling water pipeline system fails or has low load, such as no heat can be recovered due to the low temperature of the phase change material in the heat accumulator 33, or the sensor signal is abnormal and the pump signal is abnormal, etc. The heat accumulator 33 cannot receive more high-temperature cooling water, and the excess high-temperature cooling water is directly returned to the central cooling system through the bypass valve.

[0042] Referring to Figure 6 In some embodiments, the heat storage mode includes the following steps: S31, open the first valve 34, close the third valve 36, and start the first circulating pump 37, and the cooling water circulates between the heat recovery device 32 and the heat accumulator 33; S32, the controller continuously obtains and monitors the T2 value and T P value; S33, when the controller monitors that the T P value is not less than the fifth preset value or the T2 value is less than the first preset value, the first valve 34 is closed, the heat storage is paused, and the standby mode is entered; S34, the controller continuously monitors whether the air conditioning module 1 has a heating instruction, and if the heating instruction of the air conditioning module 1 is received, the heat release mode is preferentially switched to.

[0043] Specifically, when the triggering condition of the heat storage mode is monitored, the first valve 34 is opened to open the passage of the cooling water from the heat storage device 32 to the heat accumulator 33, while the third valve 36 is closed to close the bypass branch, at this time, the high-temperature cooling water is output from the heat storage device 32 to the heat accumulator 33, and the high-temperature cooling water heats the phase change material in the heat accumulator 33, the heat is absorbed by the phase change material, and the cooling water after cooling is transported back to the heat storage device 32 to continue to absorb the heat in the cooling water, and is transported to the heat accumulator 33 again, and so on, until the controller monitors that T P When the value of T2 is not less than the fifth preset value or the value of T2 is less than the first preset value, it indicates that the heat storage of the heat accumulator 33 has reached the upper limit or the heat recovered by the heat storage device 32 is insufficient, then the first valve 34 is closed to suspend the heat storage, and when the heating instruction is received, the heat release mode is switched to preferentially. Of course, it can be understood that when the first valve 34 is closed, the high-temperature cooling water in the heat storage device 32 can flow back to the central cooling system directly through other bypass pipelines, or be transported to other equipment on the ship that needs heating, such as a water heater or a kitchen device, etc. In addition, it can be understood that in some embodiments, the second valve 35 is also in a closed state in the heat storage mode, and the part of the heat storage mode refers to the process action from the initial state to the heat storage mode, and when switching from the heat release mode, the mixed mode and the bypass mode to the heat storage mode, each valve needs to pass through an initialization state first.

[0044] Referring to Figure 7 In some embodiments, the heat release mode includes the following steps: S41, the second valve 35 is opened, the third valve 36 is closed, and the second circulating pump 38 is started, and the cooling water is transported from the heat accumulator 33 to the air conditioning module 1; S42, the controller continuously acquires and monitors T P and the value of T6; S43, when the controller monitors that T P or the value of T6 is not less than the sixth preset value, the second circulating pump 38 is closed, the heat release is suspended, and standby is entered; S44, the controller continuously monitors the value of T2 and the value of T P , when the value of T2 is not less than the first preset value and the value of T P is less than the second preset value, the mixed mode is switched to preferentially.

[0045] Specifically, when the controller monitors the triggering condition of the heat release mode, the second valve 35 is opened, the third valve 36 is closed, the first valve 34 is also in the open state, and then the second circulating pump 38 is started, and at this time the heat storage device 33 is closed to return the cooling water to the heat recovery branch, the cooling water from the heat recovery device 32 is heated by the heat storage device 33 and then delivered to the heating section of the first air conditioner 11 and the second air conditioner 12 of the air conditioning module 1 for heating, and when T P The value less than the third preset value indicates that the heat stored in the heat storage device 33 is released, and the value of T6 not less than the sixth preset value indicates that the heating demand is met, at which time the second valve 35 can be closed, the heat release is suspended, and the standby state is entered, and if during the heat release, the value of T2 not less than the first preset value indicates that the cooling water output by the heat recovery device 32 is not enough to be recovered, T P The value less than the second preset value indicates that the heat storage device 33 is not fully charged, and there is a margin, at which time the heat storage can be performed, so as to switch the working mode from the heat release mode to the mixed mode.

[0046] Referring to Figure 8 In some embodiments, the mixed mode includes the following steps: S51, the first valve 34 and the second valve 35 are opened, the third valve 36 is closed, and the first circulating pump 37 and the second circulating pump 38 are started, and the cooling water circulates between the heat recovery device 32, the heat storage device 33, the air conditioning module 1 and the cooling water assembly 31; S52, the controller continues to adjust the opening of the first valve 34 and the second valve 35, and monitors T P If the difference between the value and the value of T5 is greater than the first preset temperature difference, the opening of the second circulating pump 38 is increased to reduce the temperature difference and maintain the operation of the mixed mode; S53, the controller monitors T P If the difference between the value and the value of T5 is less than the second preset temperature difference, the operation of the mixed mode is maintained, and if the difference is less than the second preset temperature difference, the opening of the first circulating pump 37 is increased, and T P If the difference between the value and the value of T5 is greater than the first preset temperature difference.

[0047] Specifically, when the air conditioning heating demand and the heat storage condition are met at the same time, the hybrid mode is entered, at this time the first valve 34 and the second valve 35 are both opened, the first circulating pump 37 and the second circulating pump 38 are also started at the same time, the heat recovery device 32 outputs high-temperature cooling water to the heat accumulator 33, after the heat accumulator 33 absorbs part of the heat and stores the heat, the high-temperature cooling water continues to be transported by the second circulating pump 38 to the heating section of the first air conditioner 11 and the second air conditioner 12 for heating. In the actual control process, the opening degree of the first valve 34 and the second valve 35 is adjusted and controlled, so as to balance the flow of heat storage and heat release, and thereby avoid that the temperature of the heat accumulator 33 fluctuates too much and causes damage to the heat accumulator 33.

[0048] Referring to Figure 9 In some embodiments, the bypass mode comprises the following steps: S61, open the third valve 36, close the first valve 34 and the second valve 35, and the cooling water in the heat recovery device 32 and the air conditioning module 1 returns to the cooling water assembly 31 through the bypass circuit; S62, trigger a fault alarm, the controller records a fault code, and waits for manual reset.

[0049] Specifically, when it is detected that a fault such as a sensor abnormality or a circulating pump overload occurs or there is no heat recovery, the cooling water after passing through the heat recovery device 32 is directly transported back to the central cooling system through the bypass pipeline, at this time there is no cooling water flowing between the heat recovery device 32 and the heat accumulator 33 and between the heat accumulator 33 and the air conditioning module 1, thereby facilitating the staff to check and maintain the structures of these two parts.

[0050] In some embodiments, when T P When the numerical value is greater than the seventh preset value or any sensor detects that the cooling water temperature is greater than the eighth preset value, all the valves are forced to open and the cooling fan is started; When F1 or F2 is less than the ninth preset value of the rated flow, an alarm is triggered and switched to the bypass mode; When the ambient temperature is lower than the tenth preset value, the electric heat tracing maintenance pipeline is started.

[0051] Specifically, in this embodiment, when the system is actually running, various faults such as overpressure and leakage may occur, at this time the problem of safety fault needs to be handled in priority, that is, the control logic priority of the system is greater for the safety fault than for the air conditioner heating demand and greater for the safety fault than for the heat storage of the heat accumulator 33.

[0052] And when T PWhen the value is greater than the seventh preset value or any sensor monitors that the cooling water temperature is greater than the eighth preset value, it indicates that the cooling water temperature is too high at this time, which is easy to be out of balance and cause damage to various instruments, so all valves need to be forcibly closed to block the circulation of cooling water, and the cooling fan is started to cool the heat recovery assembly, the heat accumulator 33 and the pipeline along the way.

[0053] When F1 or F2 is less than the ninth preset value of the rated flow, it indicates that the overall flow of the cooling water is too low, which is lower than the threshold of the preset flow, and the cooling water at this time cannot perform heat storage and heat release work, so it can be judged that part of the pipeline has a cooling water leak, and therefore the cooling water needs to be directly guided back to the central cooling system through the bypass pipeline, and an alarm is issued to facilitate the subsequent maintenance work.

[0054] When the ambient temperature is lower than the tenth preset value, it indicates that the temperature environment temperature is too low at this time, and the heat recovered by the heat recovery device 32 is not enough to maintain the state of the phase change material in the heat accumulator 33, so the electric heat tracing needs to be started at the heat accumulator 33 to maintain the temperature of the pipeline and avoid the problem of blockage of the phase change material in the heat accumulator 33.

[0055] In addition, in a specific embodiment, the first preset value is 35℃, the second preset value is 48℃, the third preset value is 40℃, the fourth preset value is 35℃, the fifth preset value is 50℃, the sixth preset value is 45℃, the seventh preset value is 60℃, the eighth preset value is 65℃, the ninth preset value is 30%, the tenth preset value is 5℃, the first preset temperature difference is 8℃, and the second preset temperature difference is 2℃. The heating instruction includes that the indoor temperature is lower than the set value, and the heating to the preset temperature instruction issued by the staff through the instrument.

[0056] The application also provides a scientific research ship provided with the air conditioning system as described above, and the heat recovery temperature control method as described above is also used.

[0057] In summary, the air conditioning system, heat recovery temperature regulation method and research ship provided by the embodiment of the present application set the first air conditioner 11 and the second air conditioner 12 for the ordinary laboratory 5 and the clean room 6 respectively, so that the air cleanliness in the clean room 6 can be adjusted and controlled individually, which is different from other ordinary laboratories 5, so as to meet the requirements of special experiments on air cleanliness, thereby improving the research efficiency; the heat recovery module 3 can absorb and store the heat absorbed by the cooling module 2 when the laboratory 5 is cooled into the heat accumulator 33, so as to provide heat for the first air conditioner 11 and the second air conditioner 12 when the laboratory 5 needs to be heated in the subsequent experiment, realize the recycling of heat energy, avoid the loss of heat, reduce the energy consumption of the laboratory 5 air conditioning system, and more accurately regulate the temperature of each laboratory 5. And in the actual temperature regulation, three working modes of heat storage mode, heat release mode and mixed mode are set for the heating and heat storage states, different trigger conditions are set to enable the whole system to switch between the above three working modes, to meet the accurate heating and temperature control requirements of the first air conditioner 11 and the second air conditioner 12, and also take into account the heat recovery in the cooling unit, and store the recovered heat in the heat accumulator 33 for the heating use of the first air conditioner 11 and the second air conditioner 12, which greatly saves the energy consumption of the air conditioning system. In addition, the heat accumulator 33 can also recover the heat of the shipborne turbine part by using a similar structure, and supply the accumulated heat to the kitchen equipment for use.

[0058] The above is only the preferred embodiment of the present application, and it should be noted that those skilled in the art can make some improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. An air conditioning system for the ventilation of a shipboard laboratory and clean room, characterized in that, The application relates to an air conditioning module, a cooling module, a heat recovery module and a constant pressure module. The air conditioning module comprises a first air conditioner and a second air conditioner, the output end of the first air conditioner is connected with a plurality of first air outlets, and the plurality of first air outlets are arranged in different laboratories respectively. The output end of the second air conditioner is connected with a plurality of second air outlets, and the plurality of second air outlets are arranged in a plurality of intervals of the clean room respectively. The cooling module is connected with the first air conditioner and the second air conditioner respectively, and is used for outputting and driving refrigerant water to circulate among the first air conditioner, the second air conditioner and the cooling module. The heat recovery module comprises a cooling water assembly, a heat recovery device and a heat accumulator, the cooling water assembly is connected with the first air conditioner and the second air conditioner, the heat accumulator is connected with the first air conditioner and the second air conditioner, the two ends of the heat recovery device are connected with the cooling water assembly and the heat accumulator respectively, the heat recovery device is connected with the cooling module in heat exchange mode, and the cooling water assembly is used for outputting and driving cooling water to circulate among the heat recovery device, the heat accumulator, the first air conditioner and the second air conditioner.

2. The air conditioning system of claim 1, wherein, The constant pressure module is connected with the first air conditioner and the second air conditioner at the input end, and is connected with the cooling module at the output end, and is used for adjusting and maintaining the pressure of the refrigerant water delivered from the air conditioning module to the cooling module.

3. The air conditioning system of claim 1, wherein, The first air outlet is connected with a variable air volume air distributor, and the second air outlet is integrated with a high-efficiency filter, a static pressure tank, a diffuser plate and an air volume adjusting valve.

4. The air conditioning system of claim 2, wherein, The first air conditioner comprises a first air inlet section, a first filter section, a first heating section, a first refrigeration section, a first air outlet section and a first humidifying section in sequence along the direction of fresh air outlet. The first air inlet section is provided with an air adjusting door, the first filter section is provided with a plate filter and a differential pressure sensor, the first refrigeration section is provided with a refrigeration coil, the two ends of the refrigeration coil are connected with the cooling module and the constant pressure module respectively, the first heating section is provided with a heating coil, the two ends of the heating coil are connected with the heat accumulator and the cooling water assembly respectively, the first humidifying section is provided with an electric heating humidifier, and the first air outlet section is provided with a fan, a motor and a sterilization device.

5. The air conditioning system of claim 2, wherein, The second air conditioner comprises a second air inlet section, a second filter section, a pre-heating section, a second refrigeration section, a second heating section, a second humidifying section, a second air outlet section, a sound insulation section and a third filter section in sequence along the direction of fresh air outlet. The second air inlet section is provided with an air adjusting door, the second filter section is provided with a primary filter and a differential pressure sensor, the pre-heating section and the second heating section are provided with heating coils, the two ends of the heating coils are connected with the heat accumulator and the cooling water assembly respectively, the second refrigeration section is provided with a refrigeration coil, the two ends of the refrigeration coil are connected with the cooling module and the constant pressure module respectively, the second humidifying section is provided with an electric heating humidifier, the second air outlet section is provided with a fan and a motor, the sound insulation section is provided with sound insulation sheets, and the third filter section is provided with a medium-efficiency filter and a sterilization device.

6. The air conditioning system of claim 1, wherein, The cooling module comprises a plurality of water chillers arranged in parallel, and each water chiller comprises a compressor, a condenser and an evaporator.

7. The air conditioning system of claim 6, wherein, The cooling water assembly comprises a shipborne central cooling system, and the heat recovery device comprises a cooling water pipe which is arranged in close contact with the condenser and has two ends connected to the central cooling system and the heat accumulator respectively. The heat accumulator is provided with a thermal phase change material.

8. The air conditioning system of claim 1, wherein, The clean room is provided with a plurality of clean rooms in parallel.

9. A heat recovery temperature control method using the air conditioning system according to any one of claims 1 to 8, characterized by, The method comprises the following steps: S1, after the system is powered on, the sensor signal is detected to determine whether it is normal, the first valve and the second valve are closed, the third valve is opened, the first circulating pump and the second circulating pump are opened, and the first circulating pump and the second circulating pump are in standby state; The first valve is located between the heat recovery device and the heat accumulator, the second valve is located between the heat accumulator and the air conditioning module, and the third valve is a bypass valve; the first circulating pump is located between the heat recovery device and the heat accumulator, and the second circulating pump is located between the heat accumulator and the air conditioning module; S2, the controller acquires the sensor signal, compares the acquired sensor signal with the corresponding preset value, and selects different working modes according to the signal data comparison result; wherein the sensor signals include a heat recovery device cooling water inlet temperature T1 and a heat recovery device cooling water outlet temperature T2, a regenerator cooling water inlet temperature T3 and a regenerator cooling water outlet temperature T4, an air conditioning module cooling water inlet temperature T5 and an air conditioning module cooling water outlet temperature T6, a regenerator phase change material temperature T P , a cooling water flow rate F1 at the regenerator inlet, and a cooling water flow rate F2 at the air conditioning module inlet; S3, when the T2 value acquired by the controller is not less than the first preset value, and the T P value is less than the second preset value, and the controller does not receive the heating instruction of the air conditioning module, the heat storage mode is started. S4, when the controller receives a heating instruction of the air conditioning module, and T P when the value is not less than a third preset value, the heat release mode is started. S5、when the T2 value obtained by the controller is not less than the first preset value, and the T P value is less than the second preset value, and the controller receives a heating instruction of the air conditioning module, the hybrid mode is started S6、when T P If the value is less than a fourth preset value or the system fails, the bypass mode is started.

10. The heat recovery temperature regulation method of claim 9, wherein, The heat storage mode comprises the following steps: S31, the first valve is opened, the third valve is closed, and the first circulating pump is started, and the cooling water circulates between the heat recovery device and the heat accumulator; S32, the controller continuously acquires and monitors the T2 value and T P value; S33, when the controller monitors T P If the value is not less than the fifth preset value or the value of T2 is less than the first preset value, the first valve is closed, the heat accumulation is suspended, and standby is entered. S34, the controller continuously monitors whether there is a heating instruction of the air conditioning module, and if the heating instruction of the air conditioning module is received, the heat release mode is switched preferentially.

11. The heat recovery temperature regulation method of claim 9, wherein, The heat release mode comprises the following steps: S41, the second valve is opened, the third valve is closed, the second circulating pump is started, and the cooling water is transported from the heat accumulator to the air conditioning module; S42, the controller continuously acquires and monitors T P The value of T6 is the value of T6; S43, when the controller monitors T P When the value is less than the third preset value or the value of T6 is not less than the sixth preset value, the second circulating pump is turned off, the heat release is suspended, and standby is entered. S44, the controller continuously monitors the T2 value and T P value, and T2 value is not less than the first preset value, and T P value is less than the second preset value, the controller switches to the hybrid mode.

12. The heat recovery temperature regulation method of claim 9, wherein, The mixed mode comprises the following steps: S51, the first valve and the second valve are opened, the third valve is closed, the first circulating pump and the second circulating pump are started, and the cooling water circulates between the heat recovery device, the heat accumulator, the air conditioning module and the cooling water assembly; S52, the controller continuously adjusts the opening degree of the first valve and the second valve, monitors T p whether the difference between the numerical value and the T5 numerical value is greater than the first preset temperature difference, and if greater than the first preset temperature difference, the opening degree of the second circulating pump is increased to reduce the temperature difference and maintain the operation of the mixing mode. S53, the controller monitors T p whether the difference between the value of T5 and the value of T is less than a second preset temperature difference, if not, maintaining the operation of the mixed mode, if yes, increasing the opening degree of the first circulating pump, and determining again whether T p whether the difference between the value of T5 and the value of T is greater than a first preset temperature difference.

13. The heat recovery temperature regulation method of claim 9, wherein, The bypass mode comprises the following steps: S61, the third valve is opened, the first valve and the second valve are closed, and the cooling water in the heat recovery device and the air conditioning module returns to the cooling water assembly through the bypass circuit; S62, a fault alarm is triggered, the controller records the fault code, and waits for manual reset.

14. The heat recovery temperature regulation method according to claim 9, wherein When T P When the value is greater than the seventh preset value or any sensor monitors the cooling water temperature greater than the eighth preset value, all valves are forced and the cooling fan is started. When F1 or F2 is less than a ninth preset value of the rated flow, an alarm is triggered, and the bypass mode is switched to; When the ambient temperature is lower than a tenth preset value, an electric heat tracing pipe is started to maintain the pipeline temperature.

15. A research vessel, characterized by The air conditioning system is provided with the air conditioning system according to any one of claims 1 to 8.

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