CN101706136B - Solution temperature and humidity adjustment air treatment system - Google Patents

Abstract

The invention belongs to the technical field of energy engineering, and relates to a solution temperature and humidity control air treatment system, which combines the heat and mass transfer process with heat pipe energy-saving technology and heat pump energy-saving technology to realize a high-efficiency energy-saving system for air temperature and humidity control. Air circulation, N-level solution treatment, solution flow and storage, M-level solution regeneration, P-level heat pipe recovery, heat pump cooling or heating, L-level (or L+1) air cooling tower, cooling water circulation, temperature Ten subsystems of control and humidity control are organically connected with the low-temperature auxiliary heat source and combined into an integrated solution temperature-adjusting and humidity-adjusting air treatment system; among them, 1≤N≤20, N=M=P=L; it saves mineral energy and has less pollutants; The structure is novel and simple; the process of temperature and humidity regulation is integrated, the dehumidification module is small in size, the mass transfer driving force is large, the energy utilization efficiency is high, energy saving, heat pump efficiency is high, and the application is wide.

Description

A solution temperature and humidity control air treatment system

Technical field:

The invention belongs to the technical field of energy engineering, and relates to a solution temperature and humidity control air treatment system. The high-efficiency heat and mass transfer process realized by the direct contact between the solution and the air is organically combined with the heat pipe energy-saving technology and the heat pump energy-saving technology to realize air conditioning. High-efficiency energy-saving system for temperature and humidity control.

Background technique:

Air treatment systems are widely used in fields such as industry, agriculture, commerce and people's family life. For example: in the convection drying process widely used in industrial and agricultural production, the air treatment system is its drying power source, and the annual energy consumption of the air treatment system used for drying power source is quite huge; All kinds of air conditioners used in family life are also air treatment systems, and their energy consumption is also very large. According to statistics, in 2002, the total energy consumption of buildings in China reached 350 million tons of standard coal, accounting for 27.6% of the total energy consumption of the society; The air-conditioning and cooling load of the power grid reaches 4500×10 ⁴ kW, which is equivalent to the full-load capacity of 2.5 Three Gorges power stations. With the development of national construction and the improvement of people's living standards, the proportion of building energy consumption will continue to increase significantly. According to the experience of developed countries, it will eventually reach about 35% of the total social energy consumption. It is estimated that by 2020, the national refrigeration power peak load will double that of 2010, which is equivalent to the full load capacity of 10 Three Gorges power stations. The average investment of about 8,000 RMB is required to build a kilowatt of power stations and power grid facilities. That is to say, if the air-conditioning load is entirely powered by electricity, the total investment in power construction will be as high as 1.4 trillion RMB. At the same time, coal-fired power generation also has a serious impact on resources and the environment, including COx, SOx, NOx and dust emissions, heat island effect caused by urban air conditioning, noise pollution, etc., all of which endanger the sustainable development of the economy and society; in the future, the air The way of dealing with the system must be innovated; the new type of air conditioner must be able to meet the requirements of the coordinated development of economy, society, people and the environment. Temperature and humidity are the two most important parameters that must be controlled in the air conditioning process. People often mistakenly think that air conditioners are just for temperature adjustment. In fact, too high or too low humidity will make the human body feel uncomfortable and affect the quality of the building environment. At a certain temperature, lowering the humidity will make people feel cooler, drier and more comfortable, the clothes will be more comfortable to wear, and people will subjectively feel that the air is fresher. In addition, excessive humidity is not allowed in some industrial productions. Industrial departments such as archives, tobacco, and military industry, as well as underground or semi-underground buildings, have high requirements for dehumidification according to different methods, especially in textiles, medicine, etc. In other industries, the relative humidity of the air will have a great impact on product quality and product storage in the production process. So dehumidification or humidification is an important part of the air conditioning process. Dehumidification or humidification is a high energy consumption work, because although the water vapor content in the air is very small, only tens of grams of water vapor per kilogram of air, but due to the high latent heat of vaporization of water, the energy consumption of dehumidification or humidification accounts for 20% to 40% of the total energy consumption of air conditioners. Therefore, the research and development of efficient and energy-saving dehumidification and humidification technology is of great significance to the energy and environment of the whole society.

In the existing air handling system, the four most important processes are cooling, dehumidification, heating and humidification, and the dehumidification process is the most difficult and energy-intensive process among the four processes. The traditional air-conditioning method removes the indoor sensible heat load and latent heat load by cooling and dehumidifying the air. Although this air-conditioning method can provide a comfortable indoor environment, it has three disadvantages: (1) The traditional air-conditioning method does not affect the air Combine cooling and dehumidification, so that the heat that could have been drained by the high-temperature cold source and the dehumidification share the low-temperature cold source together, resulting in a waste of energy utilization grade, which is especially prominent in hot and humid areas with large air-conditioning humidity loads; (2) When the heat-humidity combined treatment is performed on the air, the heat-humidity ratio can only be changed within a certain range, which is difficult to meet the actual needs; when the heat-humidity ratio does not meet the needs, the control of the humidity is usually sacrificed, just to meet the required Temperature requirements, resulting in too high or too low relative humidity of the air, which damages the thermal comfort of the air-conditioned room; (3) Traditional air conditioners use the cooling surface to cool and dehumidify the air, but the cooling surface is wet or waterlogged, which is easy to breed bacteria and mold , resulting in a decrease in the air quality of the air conditioner. Especially after our country experienced "SARS" (atypical pneumonia), the traditional air-conditioning method was questioned by people, and the concept of fresh air air-conditioning began to be valued. The unique, miniaturized independent dehumidification technology has become the research direction of industry and academia. The liquid temperature and humidity control air treatment system is a green air-conditioning method with great development potential in terms of environmental protection and energy saving, and it is also a topic currently being discussed and studied by industry experts. The high-efficiency heat and mass transfer process realized by the direct contact between the solution and the air can not only dehumidify the air, but also realize the cooling, humidification, heating and other processes of the air as long as the temperature and concentration of the dehumidification liquid are reasonably controlled and adjusted; but What kind of system can be used to make full use of so many advantages of the high-efficiency heat and mass transfer process when the above-mentioned solution is in direct contact with the air, so as to realize the high-efficiency and energy-saving air treatment process of liquid temperature and humidity regulation. At present, research work in the field of liquid dehumidification is very active at home and abroad. But looking at the research situation in recent decades, most of the work is concentrated on the research or experiment of specific components and specific working conditions, such as the thermophysical properties of the dehumidification solution, the dehumidification performance of the dehumidifier, the regeneration capacity of the regenerator, The flow ratio of air and desiccant, etc., and more theoretical research, less experimental verification, the overall description of this type of system and the comprehensive trade-off of the overall performance have been done less, and there has been no understanding of the system cycle form and optimal design. Big breakthrough.

Invention content:

The purpose of the present invention is to overcome the shortcomings of the prior art and seek to design a solution temperature and humidity control air treatment system that realizes high efficiency and energy saving.

In order to achieve the above object, the present invention combines the air circulation subsystem, the N-level solution processing subsystem, the solution flow and storage subsystem, the M-level solution regeneration subsystem, the P-level heat pipe regeneration subsystem, and the heat pump cooling or heating subsystem , L-level (or L+1 level) air cooling tower subsystem, cooling water circulation flow subsystem, temperature control subsystem, humidity control subsystem and low-temperature auxiliary heat source are organically connected and combined into an integrated solution temperature and humidity control air treatment system; among them, 1≤N≤20, N=M=P=L; the air circulation subsystem and the N-level solution processing subsystem form the main functional area; the solution flow and storage subsystem, the M-level solution regeneration subsystem, and the P-level heat pipe regeneration sub-system System and low-temperature auxiliary heat source form the solution regeneration functional area; heat pump cooling or heating subsystem, L-level (or L+1 level) air cooling tower subsystem, cooling water circulation flow subsystem and low-temperature auxiliary heat source form the auxiliary functional area; temperature control The subsystem and the humidity control subsystem form the control function area; the main body function area completes the temperature and humidity adjustment process of the air by the solution, that is, the return air in the air circulation subsystem is mixed with the supplementary fresh air, and enters the N-level solution processing subsystem. The direct contact between the mixed air and the solution in the N-level solution processing subsystem realizes the efficient heat and mass transfer process, so that the temperature and humidity of the mixed air can be treated to the air supply state, and then sent by the blower to the air-conditioned room or drying room to absorb the heat load and humidity. After the load, part of the air is discharged by the exhaust fan, and the other part is sent by the return fan to the air inlet duct to mix with the supplementary fresh air, and then enters the N-level solution processing subsystem again, and so on, so as to realize the temperature and humidity adjustment of the air; The solution regeneration functional area completes the concentrated regeneration process of the dilute solution formed after moisture absorption. The solution flow and storage subsystem sends the dilute solution flowing out of the N-level solution processing subsystem into the M-level solution regeneration subsystem. In the regeneration subsystem, the dilute solution is preheated with the condenser of the P-level heat pipe regenerating subsystem, and the hot air heated by the low-temperature auxiliary heat source flows in the opposite direction. After the heat and mass transfer process is completed by direct contact, the dilute solution Part of the water evaporates into the air to form a concentrated solution, which is then sent back to the N-level solution processing subsystem by the solution flow and storage subsystem, forming a continuous cycle of solution regeneration process; the auxiliary function area provides the necessary cooling for the main body function area. , heat source, in which the L-level or L+1-level air cooling tower subsystem and the cooling water circulation flow subsystem provide cooling water for the functional area of the body and the heat pump cooling subsystem, and the heat pump cooling or heating subsystem provides the main body function according to the needs of the season The area provides cooling or heat; the control function area completes the temperature and humidity control of the body function area, and the temperature control subsystem and humidity control subsystem respectively complete the temperature and humidity control of the body function area.

When the present invention is used as a drying power source, a Q-level heat pipe reheating subsystem (1≤Q≤20) can also be added, that is, Q-level heat pipe regenerating sub-systems with the same structure are arranged in series before and after the N-level solution processing subsystem in the air treatment section System, according to the air flow direction of the air treatment section, a heat pipe evaporator is arranged in front of the N-level solution processing subsystem, and a heat pipe condenser is arranged after the N-level solution processing subsystem. The Q-level heat pipe recovery subsystem treats the N-level solution The heat energy of the air in front of the subsystem is recovered, so that the air before entering the N-level solution treatment subsystem is pre-cooled, which is conducive to improving the efficiency of the dehumidification process, and the recovered heat energy is used to heat the air treated by the N-level solution treatment subsystem , to increase the supply air temperature.

The present invention is designed according to the general-purpose air treatment system with fresh air, return air, and exhaust air, or according to the fresh air air treatment system without return air. In addition, in special occasions, such as when used as a drying power source , designed according to the total return air system without fresh air and exhaust air.

There are one or more solution processing subsystems in the present invention. When there is one solution processing subsystem, it is a single-stage solution processing subsystem; when there are multiple solution processing subsystems, it is a multi-stage solution processing subsystem.

There are one or more solution regeneration subsystems in the present invention. When there is one solution regeneration subsystem, it is a single-stage regeneration subsystem; when there are multiple solution regeneration subsystems, it is a multi-stage solution regeneration subsystem.

The present invention has one or more heat pipe regeneration subsystems. When there is one heat pipe regeneration subsystem, it is a single-stage heat pipe regeneration subsystem; when there are multiple heat pipe regeneration subsystems, it is a multi-stage heat pipe regeneration subsystem. system.

The air cooling tower subsystem of the present invention is one or more. When there is one air cooling tower subsystem, it is a single-stage air cooling tower subsystem; when there are multiple air cooling tower subsystems, it is a multi-stage air cooling tower subsystem.

The N-level solution processing subsystem of the present invention can realize the temperature and humidity adjustment process of the air at the same time, so that the humidity adjustment and temperature adjustment processes are combined into one.

Before the air in the regeneration function zone of the present invention enters the M-level solution regeneration subsystem, it is preheated by the condenser of the P-level heat pipe regeneration subsystem, and then heated by a low-temperature auxiliary heat source, so that the inlet air of the regeneration function zone has The hot air at a higher temperature reduces or avoids the heat transfer of the high-temperature solution to the air during the regeneration process, so that the solution always maintains a higher temperature during the regeneration process, thereby having a greater driving force for mass transfer; lowering the solution regeneration temperature, so that The regeneration process can use a lower temperature auxiliary heat source; since the air discharged from the M-level solution regeneration subsystem first enters the evaporator of the P-level heat pipe heat recovery subsystem, the heat is recovered by the heat pipe heat recovery subsystem and used for preheating regeneration Air, so there will be no loss of heat energy due to the high temperature of the air during the regeneration process.

The L-level or L+1-level air cooling tower subsystem of the present invention connects the outdoor air cooling tower and the exhaust air cooling tower in series, adopts the heat and mass transfer process of direct contact, and the cooling water reaches the wet bulb temperature of the air in contact with it; effectively utilizes The natural cooling energy of outdoor air (including the cooling energy of the mass transfer process due to the low wet bulb temperature) and the cooling energy of the exhaust air (including the cooling energy of the mass transfer process due to the low wet bulb temperature of the exhaust air).

The internal structure of the N-level solution processing subsystem and the M-level solution regeneration subsystem of the present invention is a packed bed type, a packed tower type, a spray chamber type or a spray coil type; the packing in the packed tower type is a regular packing or Bulk packing; determine the specific internal structure and materials according to the principle of optimal cost performance.

The control system of the present invention adjusts the temperature of the air supply by adjusting the temperature of the dehumidification solution, and adjusts the relative humidity of the air supply by adjusting the flow rate of the concentrated solution entering the dehumidifier; realizes the control of the air-conditioning area by adjusting the air volume of the air supply and changing the gas-liquid flow ratio. Humidity or temperature regulation.

When the heat pump cooling or heating subsystem of the present invention is performing cooling work, the cooling water provided by the L-level or L+1-level air cooling tower subsystem provides cooling capacity for the heat pump condenser, and its temperature is significantly lower. The dry bulb temperature of the outdoor air can improve the efficiency of the heat pump; when the heat pump cooling or heating subsystem is performing heating work, it can absorb heat energy from the exhaust heat exchanger and the natural heat source evaporator at the same time, improving the working efficiency of the heat pump. Energy saving.

When the present invention is used in spring and autumn or in spring, autumn and summer in areas with low humidity, if the cooling water provided by the cooling tower can meet the cooling requirements of the solution, there is no need to turn on the heat pump unit, further reducing the energy consumption of the system .

Compared with the prior art, the present invention has the following advantages: first, it saves mineral energy and reduces pollutant discharge; second, it integrates a variety of energy-saving technologies with a novel and simple structure; Two are one, the dehumidification module is small in size and the mass transfer driving force is large; the fourth is that it has a greater mass transfer driving force and high energy utilization efficiency; the fifth is that it can make full use of the cold energy and natural energy of the exhaust air to save energy; the sixth is that The heat pump has high efficiency; Seventh, it can be widely used in fields such as industry, agriculture, commerce and people's family life.

Description of drawings:

Fig. 1 is a schematic diagram of the basic work flow and structural principle of the present invention.

Fig. 2 is a schematic diagram of the basic working process and structural principles of the present invention as a drying power source.

Detailed ways:

The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings.

The air circulation subsystem involved in this embodiment, the N-level solution processing subsystem (1≤N≤20), the solution flow and storage subsystem, the M-level solution regeneration subsystem (1≤M≤20), and the P-level heat pipe regeneration Subsystem (1≤P≤20), heat pump cooling or heating subsystem, L-level (or L+1 level) air cooling tower subsystem (1≤L≤20), cooling water circulation subsystem, temperature control subsystem 10 subsystems, such as humidity control subsystem and low-temperature auxiliary heat source, are essential parts; the main components include the first-level outdoor air cooling tower 1, the cooling tower water pipeline 2, the second-level outdoor air cooling tower 3, and the L-level outdoor air cooling tower. Cooling tower 4, exhaust cooling tower 5, main exhaust air duct 6, return air duct 7, air user (air-conditioning room or drying room) 8, cooling tower water pump 9, exhaust fan 10, exhaust heat recovery for heat pump Evaporator 11, connecting pipeline between heat pump host and air heat exchanger, natural heat source evaporator 12, branch exhaust air duct 13, natural heat source evaporator (such as outdoor air energy, seawater heat energy, groundwater heat energy, etc.) 14, heat pump condensation Heat pump cooling water pump 15, heat pump condenser cooling water pipeline 16, solution cooling water pipeline 17 in the first few stages, solution cooling water pipeline 18 in the last few stages, heat pump water-cooled condenser 19, heat pump and water-cooled condenser connecting pipeline 20, heat pump Main engine 21, return air fan 22, solution cooling water pump 23 for the last stages, solution cooling heat exchanger 24 for the last stages, connecting pipeline 25 between heat pump host and solution heat exchanger, temperature control line 26, working solution cooling water pump for the first few stages 27, working solution heat exchangers 28 for the first few stages, working solution heat exchangers 29 for the latter stages, temperature controller 30, working solution tank 31, first-stage working solution processing liquid separator 32, working solution liquid pipe 33, Nth-level working solution processing liquid separation device 34, first-level regeneration solution processing liquid separation device 35, M-level regeneration solution processing liquid separation device 36, liquid baffle plate 37, fresh air duct 38, fresh air blower 39, air treatment section 40, dilute solution tank 41, dilute solution pipeline 42, working solution circulation pump 43, working solution circulation supply pipe 44, humidity transmitter 45, temperature transmitter 46, air blower 47, air supply duct 48, dilute Solution pump 49, concentrated solution tank 50, concentrated solution supply pump 51, humidity control line 52, heat exchanger 53 for dilute solution and concentrated solution, auxiliary heat source pipeline 54 for regeneration solution, heat exchanger 55 for regeneration solution, circulation of regeneration solution Liquid supply pipe 56, regeneration solution liquid distribution pipe 57, auxiliary heat source pipeline 58 for regeneration air, auxiliary heat exchanger 59 for regeneration air, first-stage heat pipe regenerator condenser 60, P-stage heat pipe regenerator condenser 61, P-stage heat pipe regenerator evaporator 62, first-stage heat pipe regenerator evaporator 63, regeneration air duct 64, regeneration fan 65, P-stage heat pipe regenerator connecting pipeline 66, first-stage heat pipe regenerator Heater connection pipeline 67, regeneration solution circulation pump 68, regeneration solution tank 69, concentrated solution return pipe 70, concentrated solution return pump 71, temperature controller 72, Q-stage heat pipe regenerator evaporator 73, first Stage Heat Pipe Regenerator Evaporator 74, Stage 1 Heat pipe regenerator condenser 75, Q-th stage heat pipe regenerator condenser 76, Q-th stage heat pipe regenerator connecting pipeline 77, first-stage heat pipe regenerator connecting pipeline 78 and heat pump heating condenser 79; The components are connected and combined in principle to form an integrated system device.

The air circulation subsystem of the present embodiment includes a fresh air duct 38, a fresh air fan 39, a return air duct 7, a return fan 22, an air treatment section 40, a liquid baffle 37, an air supply fan 47, an air supply duct 48, Air user (air-conditioned room or drying room) 8, main exhaust air duct 6, branch exhaust air duct 13 and exhaust fan 10 (the dry power source system of accompanying drawing 2 is a closed cycle, so there is no fresh air duct 38, fresh air Fan 39, return air duct 7, return air fan 22); The power provided by various fans makes the air circulate reasonably between the air duct, the air treatment section and the air user (air-conditioned room or drying room); Humidity changes, rationally adjust the proportion of fresh air, return air and exhaust air, realize scientific air volume adjustment, and meet the requirements of sanitation and energy saving.

The N-level solution processing subsystem of this embodiment: arrange N-level solution processing subsystems with the same structure in series in the air processing section 40, the overall flow direction of the solution and the air flow direction are countercurrent to each other, and each level of solution processing subsystem includes a working solution Tank 31, working solution circulating pump 43, working solution supply pipe 44, working solution heat exchanger 28, 29, working solution liquid pipe 33, solution processing liquid device (internal structure is packed bed type, packed tower type, spray Shower room type or spray coil type; the packing in the packed tower type is composed of structured packing or bulk packing) 32, 34, etc.; the working solution circulating pump 43 transfers the working solution in the working solution tank 31 through the working solution supply pipe 44 The solution is sent into the working solution heat exchanger 28,29, and after the working solution is cooled or heated by the working solution heat exchanger 28,29, it is sent into the working solution liquid pipe 33, so that the working solution is evenly distributed in the For each part of the liquid separation device 32 and 34 in the heat and mass transfer area, the air to be processed passes through the heat and mass transfer surface evenly, and efficient heat and mass transfer occurs; completes the air heating, cooling, humidification, dehumidification and other processing processes .

The solution flow and storage subsystem of this embodiment includes a dilute solution tank 41, a dilute solution pump 49, a dilute solution pipeline 42, a dilute solution and a concentrated solution heat exchanger 53, a concentrated solution return pump 71, a concentrated solution pipeline 70, a concentrated solution The tank 50 and the concentrated solution supply pump 51; the dilute solution pump 49, the concentrated solution return pump 71 and the concentrated solution supply pump 51 are used as power to make the solution flow reasonably; the dilute solution and concentrated solution heat exchanger 53 is used according to the heat transfer principle The residual heat of the concentrated solution is transferred to the dilute solution at a lower temperature; the ability of the dilute solution tank 41 and the concentrated solution tank 50 to store the solution can realize the energy storage function; the dilute solution flowing out of the N-level solution processing subsystem is sent to the M Level solution regeneration subsystem, and the concentrated solution formed by the M-level solution regeneration subsystem is sent to the N-level solution treatment subsystem; during the transportation process, the waste heat of the concentrated solution is recovered and utilized by the heat exchanger between the weak solution and the concentrated solution ; In addition, the dilute solution tank and the concentrated solution tank can also realize the energy storage function.

In the M-level solution regeneration subsystem of this embodiment, M-level solution regeneration subsystems with the same structure are arranged in series in the regeneration air duct 64. The overall flow direction of the solution and the flow direction of the regeneration air are countercurrent to each other. The main components of each level of solution regeneration subsystem Including regeneration air duct 64, regeneration fan 65, regeneration solution tank 69, regeneration solution circulation pump 68, regeneration solution circulation pipe 56, regeneration solution heat exchanger 55, regeneration solution liquid distribution pipe 57, regeneration treatment liquid separation device (internal structure filling bed type, packed tower type, spray chamber type or spray coil type; the packing in the packed tower type is structured packing or bulk packing) 35, 36; the regeneration solution circulation pump 68 passes the regeneration solution circulation pipe 56 to the regeneration solution The regeneration solution in the tank 69 is sent to the regeneration solution heat exchanger 55, and after the regeneration solution is heat-treated by the regeneration solution heat exchanger 55, it is sent to the regeneration solution liquid distribution pipe 57, and the regeneration solution is evenly distributed in the area with greater heat transfer. Each part of the regenerating liquid separator 35 and 36 in the mass transfer area makes the regenerated air pass through the heat and mass transfer surface evenly, so that efficient heat and mass transfer occurs; the regeneration process of converting dilute solution into concentrated solution is completed.

In this embodiment, the P-level heat pipe regeneration subsystem is arranged in series before and after the M-level solution regeneration subsystem in the regeneration function area, and the P-level heat pipe regeneration subsystem with the same structure is arranged in series. A heat pipe condenser is arranged in front, and a heat pipe evaporator is arranged behind the M-level solution regeneration subsystem. The main components of each heat pipe regeneration subsystem include a heat pipe evaporator 60 or 61, a heat pipe condenser 62 or 63, and a heat pipe working fluid delivery pipeline 66 Or 67; according to the working principle of the dual-circulation system in the conventional dual-circulation controllable heat pipe system, the efficient heat exchange process of the heat pipe is realized; the heat energy of the regeneration air outlet air of the M-level solution regeneration subsystem is recovered for preheating The regeneration air at the inlet of the solution regeneration subsystem achieves the purpose of energy saving.

The heat pump cooling or heating subsystem of this embodiment includes a heat pump host 21, a heat pump water-cooled condenser 19, a heat pump exhaust heat recovery evaporator 11, a natural heat source evaporator 14, a heat pump solution heat exchanger 29, and a heat pump connection Pipelines 12, 20 and 25; according to the working principle of the heat pump, the heat source or cold source is selected by reducing the difference between the evaporation temperature and the condensation temperature as much as possible to improve the working efficiency of the heat pump; when the working solution needs to be cooled, the heat pump host 21 provides cooling capacity , at this time, the heat pump water-cooled condenser 19 is a condenser, and the heat pump solution heat exchanger 29 is an evaporator. , 25 form a heat pump circulation system; when the working solution needs to be heated up, the heat pump host 21 provides heat, at this time, the heat pump uses the exhaust air heat energy recovery evaporator 11, the natural heat source evaporator 14 is an evaporator, and the heat pump solution heat exchanger 29 is a condensation A heat pump circulation system is composed of a heat pump host 21, a heat pump exhaust heat recovery evaporator 11, a natural heat source evaporator 14, a heat pump solution heat exchanger 29, and heat pump connecting pipelines 12 and 25; in the basic system of Figure 1, The high-efficiency heat pump unit provides a cold source or heat source for the solution in the N-level solution processing subsystem; in the drying power source system of accompanying drawing 2, the heat pump unit obtains heat energy from the natural heat source evaporator 14, and heats up after the heat pump system raises the temperature The air is transmitted to the air heat exchanger 79 in the air treatment section 40 to increase the temperature of the air supply.

The L-level air cooling tower subsystem of this embodiment includes outdoor air cooling towers 1, 3 and 4, exhaust cooling tower 5, cooling tower water pump 9, cooling tower water pipeline 2, etc., outdoor air cooling towers 1, 3 and 4 and exhaust The air cooling towers 5 are connected in series to a total of L+1 levels (there is no exhaust cooling tower 5 in the dry power source system of accompanying drawing 2, so it is L level), according to the flow direction of the water flow, the cooling water flows through each outdoor air cooling tower 1 in sequence , after 3 and 4, enter exhaust air cooling tower 5 again, provide low-temperature cooling water by exhaust air cooling tower 5 (there is no exhaust air cooling tower 5 in the dry power source system of accompanying drawing 2, so by last 1 grade outdoor air cooling 4 The tower provides low-temperature cooling water); using the principle of high-efficiency heat and mass transfer achieved by direct contact between water and air, under ideal conditions, the cooling water temperature can reach the wet bulb temperature of the contacted air; efficient use of the natural cooling energy of the outdoor air ( Including the cold energy of the mass transfer process due to the low wet bulb temperature), while making full use of the cooling energy of the exhaust air (including the mass transfer process cold energy due to the low wet bulb temperature of the exhaust air), saving energy.

The cooling water circulating flow subsystem of this embodiment includes cooling water pipelines 16, 17 and 18 and cooling water circulating water pumps 15, 23 and 27; cooling water circulating water pumps 5, 23 and 27 are used as power sources to drive cooling water to flow through various heat exchangers, Realize heat exchange; it is divided into three small cycles to achieve three effects; the small cycle composed of cooling water circulation pump 27 and cooling water pipeline 17 provides cooling water for the first few stages of solution heat exchangers in the N-level solution processing subsystem; The small cycle formed by the cooling water circulating pump 23 and the cooling water pipeline 18 provides cooling water for the subsequent stages of solution heat exchangers in the N-level solution processing subsystem; the small cycle formed by the cooling water circulating pump 15 and the cooling water pipeline 16 is used for heat pumps A water-cooled condenser 19 provides cooling water.

The temperature control subsystem of this embodiment includes a temperature transmitter 46, a temperature controller 30, a temperature control line 26 and an actuator-heat pump host 21, to realize the control of the air supply temperature.

The humidity control subsystem of this embodiment includes a humidity transmitter 45, a humidity controller 72, a humidity control line 52, and an actuator—concentrated solution supply pump 51; to realize the control of the relative humidity of the air supply.

The low-temperature auxiliary heat source of this embodiment includes low-temperature auxiliary heat source pipelines 54, 58 and low-temperature auxiliary heat source heat exchangers 55, 59; The auxiliary heat source heat exchanger is transferred to the relevant working fluid to play the role of auxiliary heating.

The Q-level heat pipe recuperation subsystem of this embodiment: the Q-level heat pipe reheating subsystem with the same structure is arranged in series before and after the N-level solution processing subsystem of the air treatment section. A heat pipe evaporator is arranged before the solution processing subsystem, and a heat pipe condenser is arranged after the N-level solution processing subsystem. Conveying pipelines 77 and 78; according to the working principle of the dual-circulation system in the conventional dual-circulation controllable heat pipe system, an efficient heat pipe heat exchange process is realized; the heat energy of the air before the N-level solution treatment subsystem is recovered to make the N-level solution The air before the N-level solution treatment subsystem is pre-cooled, which is beneficial to improve the efficiency of the dehumidification process, and the recovered heat energy is used to heat the air after the N-level solution treatment subsystem, so that the temperature of the air supply can be increased.

Example 1:

Fresh air duct 38, fresh air fan 39, return air duct 7, return air fan 22, air treatment section 40, liquid baffle 37, air supply fan 47, air supply duct 48, air user (air-conditioned room) of the present embodiment or drying room) 8, main exhaust air duct 6, branch exhaust air duct 13, and exhaust fan 10 constitute an air circulation subsystem, which makes the air circulate in the air duct and air treatment section through the power provided by various fans. and air users (air-conditioning room or drying room) between reasonable circulation, according to indoor and outdoor temperature and humidity changes, reasonable adjustment of fresh air, return air and exhaust air ratio, to achieve scientific air volume regulation; the working solution tank 31 of this embodiment, working solution Circulation pump 43, working solution supply pipe 44, working solution heat exchanger 28, 29, working solution liquid pipe 33, solution processing liquid device (internal structure is packed bed type, packed tower type, spray chamber type or spray chamber type) shower tube type; the packing in the packed tower type is structured packing or bulk packing) 32, 34 constitute the N-level solution processing subsystem, which completes the heating, cooling, humidification, Dehumidification process; dilute solution tank 41, dilute solution pump 49, dilute solution pipeline 42, dilute solution and concentrated solution heat exchanger 53, concentrated solution pipeline 70, concentrated solution supply pump 51, concentrated solution tank 50 and Concentrated solution liquid return pump 71 constitutes a solution flow and storage subsystem, which realizes the delivery and heat exchange process of dilute solution and concentrated solution, and has energy storage function at the same time; the regeneration air duct 64, regeneration fan 65, Regeneration solution tank 69, regeneration solution circulation pump 68, regeneration solution circulation pipe 56, regeneration solution heat exchanger 55, regeneration solution liquid distribution pipe 57 and regeneration treatment liquid separation device (internal structure is packed bed type, packed tower type, spray chamber type or spray coil type; the packing in the packed tower type is structured packing or bulk packing) 35, 36 constitute the M-level solution regeneration subsystem, which completes the regeneration process of converting dilute solution into concentrated solution; The heat pipe condensers 60 and 61, the heat pipe evaporators 62 and 63, and the heat pipe working fluid delivery pipelines 66 and 67 of the embodiment constitute a P-level heat pipe heat recovery subsystem, which realizes the efficient recovery and utilization of air heat energy in the regeneration function area; this embodiment The heat pump host 21, heat pump water-cooled condenser 19, heat pump exhaust heat recovery evaporator 11, natural heat source evaporator 14, heat pump solution heat exchanger 29, heat pump connecting pipelines 12, 20 and 25 form a heat pump for cooling or The heat supply subsystem provides cold source or heat source for the solution in the N-level solution processing subsystem through the heat pump unit; the outdoor air cooling towers 1, 3 and 4 of this embodiment, the exhaust cooling tower 5, the cooling tower water pump 9, the cooling tower The tower water pipeline 2 constitutes the L+1 level air cooling tower subsystem (1≤L≤20), which utilizes the natural cooling energy of the outdoor air (including the cooling energy of the mass transfer process due to the low wet bulb temperature) and the cooling energy of the exhaust air ( Including the mass transfer process cold energy produced due to the low temperature of the rheumatic bulb); the cooling water pipeline 16, 17 and 18 and the cooling water circulation pump 15, 23 and 27 of this embodiment constitute the cooling water circulation flow subsystem, which is a solution Change Heaters 28, 29 and heat pump water-cooled condenser 19 provide cooling water; temperature transmitter 46, temperature controller 30, temperature control line 26 and actuator 21 of this embodiment constitute a temperature control subsystem to realize the supply air temperature control; the humidity sender 45, humidity controller 72, humidity control line 52 and actuator 51 of this embodiment form a humidity control subsystem to realize the control of the relative humidity of the air supply; the low temperature auxiliary heat source pipeline 54 of this embodiment , 58 and low-temperature auxiliary heat source heat exchangers 55, 59 form low-temperature auxiliary heat sources, and the heat of various low-temperature auxiliary heat sources (such as solar energy, geothermal energy, various waste heat energy, etc.) is transferred to the low-temperature auxiliary heat source heat exchangers 55, 59 The relevant working fluid plays the role of auxiliary heating.

In this embodiment, each component is first installed as shown in Figure 1, each heat pump and heat pipe system are evacuated and filled with an appropriate amount of circulating working fluid, and a certain concentration and a certain amount are filled in the dilute solution tank 41 and the concentrated solution tank 50. working solution, start the air supply fan 47 in the air circulation subsystem, the fresh air fan 39, the return air fan 22 and the corresponding exhaust fan (start the exhaust fan 10 in winter, and start the exhaust fan in the exhaust cooling tower 5 in other seasons) ), so that the air can be reasonably circulated according to the cleanliness requirements of the air conditioner; then start the working solution circulation pump 43 of the N-level solution treatment subsystem, and start the L+1-level air cooling tower subsystem, heat pump cooling or heating subsystem and cooling water circulation The flow subsystem starts the dilute solution pump 49 and the concentrated solution liquid return pump 71 in the solution flow and storage subsystem at the same time, starts the M-level solution regeneration subsystem and the P-level heat pipe regeneration subsystem, a solution temperature regulation of the present invention The humidity-adjusting air handling system starts to operate; after a certain period of time, the above-mentioned subsystems reach a stable working state under the regulation of the temperature control subsystem and the humidity control subsystem. At this time, the air circulation subsystem continuously sends the air that meets the requirements to the air user (air-conditioned room or drying room) 8; the N-level solution processing subsystem realizes heating and cooling of the air through efficient heat and mass transfer processes , humidification, dehumidification and other treatment processes; the solution flow and storage subsystem realizes the transportation and heat exchange process of the dilute solution and the concentrated solution, and has the function of energy storage; the M-level solution regeneration subsystem and the P-level heat pipe regeneration subsystem complete the dilute solution The regeneration treatment process of converting the solution into a concentrated solution; the L+1 level air cooling tower subsystem and the cooling water circulation flow subsystem efficiently utilize the natural cooling energy of the outdoor air, and also make full use of the cooling energy of the exhaust air.

Example 2:

The return air duct 7 of the present embodiment, the air treatment section 40, the liquid baffle plate 37, the blower fan 47, the air supply duct 48, the air user (air-conditioning room or drying room) 8 etc. constitute the air circulation subsystem, and the subsystem The power provided by the blower fan makes the air circulate reasonably between the air duct, the air treatment section and the air user (air-conditioned room or drying room); the working solution tank 31 of this embodiment, the working solution circulating pump 43, the working solution Liquid supply pipe 44, working solution heat exchanger 28, working solution liquid distribution pipe 33, solution processing liquid separation device (internal structure can be packed bed type, can be packed tower type, can be spray chamber type, also can be spray Shower tube type; the packing in the packed tower type can be structured packing or bulk packing) 32, 34, etc. constitute an N-level solution processing subsystem (1≤N≤20), which through efficient heat transfer The mass transfer process completes the heating, cooling, humidification, dehumidification and other treatment processes of the air; the dilute solution tank 41, dilute solution pump 49, dilute solution pipeline 42, dilute solution and concentrated solution heat exchanger 53, concentrated solution Pipeline 70, concentrated solution supply pump 51, concentrated solution tank 50, concentrated solution return pump 71, etc. constitute a solution flow and storage subsystem, which completes the transportation and heat exchange process of dilute solution and concentrated solution, and has energy storage Function: the regeneration air channel 64 of this embodiment, the regeneration fan 65, the regeneration solution tank 69, the regeneration solution circulation pump 68, the regeneration solution circulation pipe 56, the regeneration solution heat exchanger 55, the regeneration solution liquid distribution pipe 57, the regeneration treatment liquid separation Device (the internal structure can be packed bed type, packed tower type, spray chamber type, or spray coil type; the packing in the packed tower type can be structured packing or bulk packing) 35, 36, etc. constitute the M-level solution regeneration subsystem, and this subsystem completes the regeneration treatment process of converting the dilute solution into a concentrated solution; the heat pipe condensers 60 and 61, heat pipe evaporators 62 and 63, heat pipe working fluid delivery pipe Roads 66 and 67 constitute a P-level heat pipe heat recovery subsystem (1≤P≤20), which realizes the efficient recovery and utilization of air heat energy in the regeneration function area; the heat pump host 21 and the natural heat source evaporator 14 of this embodiment 1, heat pump connecting pipelines 12, 25, etc. constitute a heat pump heating subsystem, and the air treated by the N-level solution processing subsystem is reheated through a high-efficiency heat pump unit to make it reach the air supply temperature; the outdoor air cooling tower of this embodiment 1, 3 and 4, cooling tower water pump 9, cooling tower water pipeline 2, etc. constitute an L-level air cooling tower subsystem (1≤L≤20), which efficiently utilizes the natural cooling energy of outdoor air (including due to low wet bulb temperature And the mass transfer process cold energy that produces), obtain cooling water; The cooling water pipeline 17 of this embodiment and the cooling water circulating water pump 27 etc. constitute the cooling water circulating flow subsystem, and this subsystem provides the cooling water obtained by the L-level air cooling tower subsystem To the working solution heat exchanger; the temperature transmitter 46, temperature controller 30, temperature control line 26 and actuator 21 of this embodiment constitute a temperature control subsystem to realize the control of the air supply temperature; this embodiment Humidity sender 45, humidity controller 72, humidity control line 52 and actuator 51 etc. form humidity control subsystem, can realize the control of the relative humidity of air supply; Low temperature auxiliary heat source pipeline 54,58 of this embodiment and low temperature Auxiliary heat source heat exchangers 55, 59, etc. constitute low-temperature auxiliary heat sources, and transfer heat from various low-temperature auxiliary heat sources (such as solar energy, geothermal energy, various waste heat energies, etc.) The role of auxiliary heating; the heat pipe evaporators 73 and 74, heat pipe condensers 75 and 76, heat pipe working fluid delivery pipelines 77 and 78 of this embodiment constitute a Q-level heat pipe heat recovery subsystem (1≤Q≤20), the The subsystem recovers the heat energy of the air before the N-level solution treatment subsystem, so that the air is pre-cooled, which is conducive to improving the efficiency of the dehumidification process, and the recovered heat energy is used to heat the air treated by the N-level solution treatment subsystem, so as to Increase the supply air temperature.

In this embodiment, each component is first installed as shown in Figure 2, each heat pump and heat pipe system are evacuated and filled with an appropriate amount of circulating working fluid, and a certain concentration and a certain amount are filled in the dilute solution tank 41 and the concentrated solution tank 50. Start the air supply fan 47 in the air circulation subsystem to make the air circulate reasonably; then start the N-level solution processing subsystem, start the L-level air cooling tower subsystem, heat pump heating subsystem and cooling water circulation flow subsystem , start the dilute solution pump 49 and the concentrated solution liquid return pump 71 in the solution flow and storage subsystem at the same time, start the M-level solution regeneration subsystem, the P-level heat pipe heat recovery subsystem and the Q-level heat pipe heat recovery subsystem, the present invention When a solution temperature and humidity control air treatment system is used as the drying power source, the system starts to run; after a certain period of time, the above-mentioned subsystems reach a stable working state under the regulation of the temperature control subsystem and the humidity control subsystem. At this time, the air circulation subsystem continuously sends the air that meets the requirements to the air user (air-conditioned room or drying room) 8; the N-level solution processing subsystem realizes heating and cooling of the air through efficient heat and mass transfer processes , humidification, dehumidification and other treatment processes; the solution flow and storage subsystem realizes the transportation and heat exchange process of the dilute solution and the concentrated solution, and has the function of energy storage; the M-level solution regeneration subsystem and the P-level heat pipe regeneration subsystem complete the dilute solution The regeneration process of converting the solution into a concentrated solution; the L-level air cooling tower subsystem and the cooling water circulation flow subsystem efficiently utilize the natural cooling energy of the outdoor air; the Q-level heat pipe recovery subsystem transfers the heat energy of the air before the N-level solution processing subsystem The recovered heat can pre-cool the air and improve the efficiency of the dehumidification process. At the same time, the recovered heat can be used to heat the air treated by the N-level solution treatment subsystem to increase the temperature of the air supply.

Claims (6)

1. A solution temperature and humidity control air treatment system, characterized in that the air circulation subsystem, the N-level solution processing subsystem, the solution flow and storage subsystem, the M-level solution regeneration subsystem, and the P-level heat pipe regeneration subsystem , heat pump cooling or heating subsystem, L-level or L+1-level air cooling tower subsystem, cooling water circulation subsystem, temperature control subsystem, humidity control subsystem and low-temperature auxiliary heat source organically connected and combined into an integrated solution temperature adjustment Humidity-adjusting air treatment system; among them, 1≤N≤20, N=M=P=L; the air circulation subsystem and the N-level solution processing subsystem form the main functional area; the solution flow and storage subsystem, and the M-level solution regeneration sub-system System, P-level heat pipe heat recovery subsystem and low-temperature auxiliary heat source constitute the solution regeneration functional area; heat pump cooling or heating subsystem, L-level or L+1-level air cooling tower subsystem, cooling water circulation flow subsystem and low-temperature auxiliary heat source Auxiliary function area; the temperature control subsystem and the humidity control subsystem form the control function area; the body function area completes the process of temperature and humidity adjustment of the air by the solution, that is, after the return air in the air circulation subsystem is mixed with the supplementary fresh air, it enters the N N-level solution treatment subsystem, the mixed air is in direct contact with the solution in the N-level solution treatment subsystem to realize the heat and mass transfer process, so that the temperature and humidity of the mixed air can be adjusted to the air supply state, and then sent to the air-conditioned room or drying room by the blower for absorption After the heat load and humidity load, part of the air is discharged by the exhaust fan, and the other part is sent by the return fan to the air inlet duct to be mixed with supplementary fresh air, and then enters the N-level solution processing subsystem again, so that the temperature of the air is realized in a cycle. Humidity control treatment; the solution regeneration functional area completes the concentrated regeneration process of the dilute solution formed after moisture absorption, and the solution flow and storage subsystem sends the dilute solution flowing out of the N-level solution processing subsystem to the M-level solution regeneration subsystem. In the M-level solution regeneration subsystem, the dilute solution is preheated with the condenser of the P-level heat pipe regeneration subsystem, and the hot air heated by the low-temperature auxiliary heat source flows in the opposite direction, and the heat and mass transfer process is completed by direct contact. Finally, part of the water in the dilute solution evaporates into the air to form a concentrated solution, which is then sent back to the N-level solution processing subsystem by the solution flow and storage subsystem, forming a continuous cycle of solution regeneration process; the auxiliary function area is the body function area Provide cold and heat sources. The combination of L-level or L+1-level air cooling tower subsystem and cooling water circulation flow subsystem provides cooling water for the functional area of the body and the heat pump cooling subsystem. The heat pump cooling or heating subsystem provides The main body functional area provides cooling or heat; the control functional area completes the temperature and humidity control of the main body functional area, and the temperature control subsystem and humidity control subsystem respectively complete the temperature and humidity control of the main body functional area. 2. The solution temperature and humidity control air treatment system according to claim 1, characterized in that when used as a drying power source, a Q-level heat pipe regeneration subsystem is added, wherein, 1≤Q≤20, that is, in the air treatment section The heat pipe evaporator of the N-level solution treatment subsystem is arranged in front of the N-level solution treatment subsystem, and the N-level solution treatment subsystem is arranged behind the N-level solution treatment subsystem. The heat pipe condenser is arranged, and the Q-level heat pipe recovery subsystem recovers the heat energy of the air before the N-level solution treatment subsystem, so that the air before entering the N-level solution treatment subsystem is pre-cooled, and the recovered heat energy is used for heating N The air treated by the level solution treatment subsystem increases the temperature of the air supply. 3. The solution temperature and humidity control air treatment system according to claim 1, characterized in that before the air in the regeneration function zone enters the M-level solution regeneration subsystem, it is preheated by the condenser of the P-level heat pipe regeneration subsystem , and then heated by a low-temperature auxiliary heat source, so that the inlet air of the regeneration function area is hot air, reducing or avoiding the heat transfer of the high-temperature solution to the air during the regeneration process, so that the solution always maintains a high temperature during the regeneration process, and has mass transfer Driving force: reduce the solution regeneration temperature, so that the regeneration process can use a lower temperature auxiliary heat source; since the air discharged from the M-level solution regeneration subsystem first enters the evaporator of the P-level heat pipe heat recovery subsystem, the heat is reheated by the heat pipe Subsystem recovery and used to preheat regeneration air. 4. The solution temperature-adjusting and humidity-adjusting air treatment system according to claim 1, characterized in that the L-level or L+1-level air cooling tower subsystem connects the outdoor air cooling tower and the exhaust cooling tower in series, and adopts direct contact transmission In the heat and mass transfer process, the cooling water reaches the temperature of the air in contact with it; the natural cooling energy of the outdoor air and the cooling energy of the exhaust air are effectively used. 5. The solution temperature and humidity control air treatment system according to claim 1, characterized in that the internal structure of the N-level solution processing subsystem and the M-level solution regeneration subsystem is a packed bed type, a packed tower type, and a spray chamber type Or spray coil type; the packing in the packed tower type is structured packing or bulk packing; the specific internal structure and materials are determined according to the principle of optimal cost performance. 6. The solution temperature and humidity control air treatment system according to claim 1, characterized in that the control system adjusts the temperature of the air supply by adjusting the temperature of the dehumidification solution, and adjusts the relative humidity of the air supply by adjusting the flow rate of the concentrated solution entering the dehumidifier ;Regulate the humidity or temperature of the air-conditioned area by adjusting the air volume and changing the gas-liquid flow ratio.

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