CN110173776B - Pre-cooling type runner humidifying fresh air treatment device - Google Patents
Pre-cooling type runner humidifying fresh air treatment device Download PDFInfo
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- CN110173776B CN110173776B CN201910409937.7A CN201910409937A CN110173776B CN 110173776 B CN110173776 B CN 110173776B CN 201910409937 A CN201910409937 A CN 201910409937A CN 110173776 B CN110173776 B CN 110173776B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
- F24F2203/021—Compression cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
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Abstract
The invention discloses a pre-cooling type runner humidifying fresh air processing device which comprises a water-cooling type water chilling unit, an air-cooling heat pump type unit, a sensible heat recovery unit and a runner type solid adsorption dehumidification device which are sequentially arranged, wherein the water-cooling type water chilling unit comprises a water-cooling type water chilling unit evaporator, a water-cooling type water chilling unit compressor, a water-cooling type water chilling unit condenser, a water-cooling type water chilling unit throttling valve, a water-cooling type water chilling unit fan coil pipe and a cooling tower, the water-cooling type water chilling unit fan coil pipe is connected with the chilled water outlet end and the chilled water inlet end of the water-cooling type water chilling unit evaporator, and the cooling tower is connected with the. The device preheats the regeneration air by utilizing the heat discharged by the condenser in summer, thereby saving or avoiding the energy consumption of the electric heater for providing the regeneration heat; in winter, the heat absorption of the evaporator is utilized to pre-cool the moisture-supplying air, so that a cooling device for returning air is omitted, and the energy efficiency of the fresh air processing device is improved.
Description
Technical Field
The invention belongs to the field of heating ventilation air conditioning systems, and relates to a fresh air processing device for humidifying a runner.
Background
In the air conditioning system, a certain amount of fresh outdoor fresh air needs to be supplied indoors according to the requirements of the national current health standard. Outdoor fresh air can not be directly sent into a room generally due to the reasons of temperature, humidity, dust content and the like, and must be subjected to heat and humidity treatment. During the cooling season, outdoor air is usually high in temperature and humidity and needs to be cooled and dehumidified, and particularly in the southeast and east humid areas, the core task of the air treatment process is the dehumidification treatment process of fresh air. At present, the air conditioning system in China generally adopts a condensation dehumidification mode, namely, chilled water with the temperature of about 7 ℃ is adopted to realize cooling and dehumidification treatment on air, and simultaneously, sensible heat load and latent heat load of a building are removed. However, the air is cooled and dehumidified by a condensation dehumidification method, the ratio of sensible heat to latent heat in the process can only be changed within a certain range, and the heat-humidity ratio required by the indoor environment regulation of the building is changed within a larger range. Under the condition that the requirement on indoor air parameters is not strict, China generally sacrifices the control on humidity and only meets the requirement on indoor temperature to compromise, so that the phenomenon that the indoor relative humidity is too high or too low is caused, and the requirement on human body comfort is difficult to meet. In order to meet the humidity requirement in the united states, the method of condensing first and then reheating is adopted to expand the variation range of the heat-humidity ratio. Since the temperature of the air supply after condensation is very low and needs to be reheated, energy consumption is huge. Therefore, reducing the energy consumption of fresh air treatment as much as possible on the basis of meeting the requirement of indoor humidity is an important link for the improvement and development of the air conditioning system.
In addition to the condensation dehumidification, there are solid adsorption dehumidification, solution adsorption dehumidification, pressure cooling dehumidification, and the like. The essence of condensation dehumidification and pressurized cooling dehumidification is the same, air needs to be cooled to below dew point temperature (sometimes sensible heat recovery or total heat recovery is carried out on fresh air and return air), condensed water is separated out to achieve the purpose of dehumidification, and then the requirement of air supply temperature is achieved through reheating or a mode of mixing secondary return air and air supply. Solution dehumidification can be carried out cooling while air dehumidification, the solution is directly processed to a required state point, and two types of devices, namely heat insulation type solution dehumidification/regeneration and inner cooling type solution dehumidification/regeneration, are available at present according to whether external cold (heat) exchange exists or not. In the solid dehumidification process, because the contact with air for moisture absorption is approximately an isenthalpic process, the temperature of the dehumidified air is obviously increased, and a large amount of cold energy needs to be consumed to reprocess the dehumidified high-temperature air to an expected air supply state point.
During the heating season, if air conditioning heating is adopted, the temperature of fresh air with equal moisture content is usually raised, so that the relative humidity of air supply is low, and the thermal comfort is poor. Therefore, a certain moisture content is required in the process of processing fresh air. In the above dehumidification method, the solid adsorption dehumidification and the solution adsorption dehumidification can humidify the process air using the regeneration process in winter.
From the background art, at present, a fresh air processing device which can carry out multi-stage precooling dehumidification on fresh air, and can heat return air by utilizing partial condensation heat to regenerate a rotating wheel dehumidification system and realize dual purposes in winter and summer is not available. This patent aims at providing a new trend processing apparatus of runner humidifying, utilize the refrigerating unit of different grade type, heat pump set and runner are to new trend cooling dehumidification or heating humidification in grades, the heat extraction that utilizes partly condenser in summer is used for heating the return air, moisture of hygroscopic material is taken away in runner dehydrating unit's regeneration zone, the cold volume that utilizes partly evaporimeter in winter is used for cooling the return air, provide the required moisture content of new trend in runner dehydrating unit's dehumidification district, in order to reduce the cooling dehumidification, heating regeneration, the required energy consumption of precooling and humidification.
Disclosure of Invention
The technical problem is as follows: the invention provides a precooling type runner humidifying fresh air processing device which fully utilizes the heat discharge of a heat pump unit in summer and reduces or avoids high-grade energy consumption required by heating and regenerating a solid moisture absorption material.
The technical scheme is as follows: the invention relates to a precooling type fresh air processing device for humidifying a runner, which comprises a water-cooled water chilling unit, an air-cooled heat pump type unit, a sensible heat recovery unit and a runner type solid adsorption dehumidification device which are sequentially arranged, wherein the water-cooled water chilling unit comprises a water-cooled water chilling unit evaporator, a water-cooled water chilling unit compressor, a water-cooled water chilling unit condenser, a water-cooled water chilling unit throttle valve, a water-cooled water chilling unit fan coil pipe and a cooling tower, the water-cooled water chilling unit fan coil pipe is connected with the chilled water outlet end and the chilled water inlet end of the water-cooled water chilling unit evaporator, the water-cooled water chilling pump is arranged between the chilled water outlet end of the water-cooled water chilling unit fan coil pipe and the chilled water inlet end of the water-cooled water chilling unit evaporator, and the cooling water pump is arranged between the chilled water outlet end of the, the refrigerant outlet end of the water-cooled chiller throttling valve is connected with the refrigerant inlet end of the water-cooled chiller evaporator through a pipeline, and the refrigerant inlet end of the water-cooled chiller compressor is connected with the refrigerant outlet end of the water-cooled chiller evaporator through a pipeline. The air-cooled heat pump type unit comprises an air-cooled heat pump type unit evaporator, an air-cooled heat pump type unit compressor, an air-cooled heat pump type unit four-way reversing valve, an air-cooled heat pump type unit condenser and an air-cooled heat pump type unit throttling valve, wherein a refrigerant outlet end of the air-cooled heat pump type unit condenser is connected with a refrigerant inlet end of the air-cooled heat pump type unit evaporator through the air-cooled heat pump type unit throttling valve, a refrigerant inlet end and a refrigerant outlet end of the air-cooled heat pump type unit compressor are respectively connected with two opposite interface ends of the air-cooled heat pump type unit four-way reversing valve, and a refrigerant outlet end of the air-cooled heat pump type unit evaporator and a refrigerant inlet end of the air-cooled heat pump type unit condenser are respectively connected with the other two. The sensible heat recovery unit comprises a sensible heat recovery unit evaporator, a sensible heat recovery unit compressor, a sensible heat recovery unit four-way reversing valve, a sensible heat recovery unit condenser and a sensible heat recovery unit throttling valve, wherein a refrigerant inlet end of the sensible heat recovery unit evaporator is connected with a refrigerant outlet end of the sensible heat recovery unit condenser through the sensible heat recovery unit throttling valve, an inlet end and an outlet end of the sensible heat recovery unit compressor are respectively connected with any two opposite interface ends of the sensible heat recovery unit four-way reversing valve, and an outlet end of the sensible heat recovery unit evaporator and an inlet end of the sensible heat recovery unit condenser are respectively connected with the other two opposite interface ends of the sensible heat recovery unit four-way reversing valve. The rotary wheel type solid adsorption dehumidification equipment comprises a dehumidification area and a regeneration area, and the sensible heat recovery unit evaporator and the dehumidification area are correspondingly arranged.
Further, in the device of the invention, the fan coil of the water-cooled chiller unit and the evaporator of the water-cooled chiller unit are connected through a chilled water circulation pipeline, the evaporator of the water-cooled chiller unit and the condenser of the water-cooled chiller unit are connected through a refrigerant circulation pipeline, the condenser of the water-cooled chiller unit and the cooling tower are connected through a cooling water circulation pipeline, the evaporator of the air-cooled heat pump type unit and the condenser of the air-cooled heat pump type unit are connected through a refrigerant circulation pipeline, and the evaporator of the sensible heat recovery unit and the condenser of the sensible heat recovery unit are connected through a refrigerant circulation pipeline.
Furthermore, in the device, an electric heater is arranged between the sensible heat recovery unit condenser and the regeneration area of the rotary wheel type solid adsorption dehumidification equipment.
Furthermore, in the device, the regeneration area of the rotary wheel type solid adsorption dehumidification equipment is dehumidified and regenerated by return air heated by the sensible heat recovery unit condenser, and when the heat provided by the sensible heat recovery unit condenser is not enough to dehumidify and regenerate the regeneration area of the rotary wheel type solid adsorption dehumidification equipment, the electric heater is adopted to perform auxiliary heating on the return air so as to take away the moisture in the moisture absorption material and recover the dehumidification performance of the moisture absorption material.
Furthermore, in the device, in the water-cooled chiller evaporator, chilled water and refrigerant of the water-cooled chiller are subjected to sensible heat exchange, and chilled water subjected to temperature reduction in the water-cooled chiller evaporator enters a fan coil of the water-cooled chiller to carry out primary cooling and dehumidification on fresh air; the refrigerant in the air-cooled heat pump type unit carries out secondary cooling and dehumidification on fresh air in an evaporator of the air-cooled heat pump type unit; and the refrigerant in the sensible heat recovery unit carries out third-stage cooling dehumidification on fresh air in the evaporator of the sensible heat recovery unit.
Furthermore, in the device, sensible heat exchange is carried out between cooling water and the refrigerant of the water-cooled chiller unit in the condenser of the water-cooled chiller unit in summer to absorb heat discharged by the refrigerant, total heat exchange is carried out between the cooling water and outdoor air in the cooling tower to take away the heat of the cooling water through evaporation and heat absorption, and the water-cooled chiller unit does not operate in winter.
Further, in the device of the present invention, the chilled water pump is disposed in the chilled water circulation line, and the cooling water pump is disposed in the cooling water circulation line.
Furthermore, in the device, in summer, the dehumidification area of the rotary wheel type solid adsorption dehumidification equipment is positioned in a fresh air processing system to adsorb and dehumidify fresh air, the regeneration area is positioned in a return air processing system to regenerate and humidify return air, in winter, the dehumidification area of the rotary wheel type solid adsorption dehumidification equipment is positioned in the return air processing system to absorb moisture of the return air, and the regeneration area is positioned in the fresh air processing system to humidify the fresh air.
Furthermore, in the device, the air-cooled heat pump type unit evaporator and the sensible heat recovery unit evaporator are used for precooling fresh air in summer and heating the fresh air in winter, the sensible heat recovery unit condenser is used for preheating return air in summer, the air-cooled heat pump type unit four-way reversing valve and the sensible heat recovery unit four-way reversing valve are adjusted to realize the conversion of the functions when the air-cooled heat pump type unit evaporator and the sensible heat recovery unit evaporator are exchanged in winter and summer.
In the preferred scheme of the device, two main components of the sensible heat recovery unit, namely an evaporator and a condenser, are respectively used for processing fresh air and return air, and are used for cooling and dehumidifying the fresh air and heating the return air in summer so as to regenerate the solid adsorption dehumidifying material; in winter, the air conditioner is used for heating fresh air and precooling return air respectively so as to provide the moisture content required by the fresh air.
The device can realize dual purposes in winter and summer, wherein in summer, chilled water produced by a water-cooled water chilling unit and refrigerant produced by an air-cooled heat pump type unit and a sensible heat recovery unit are adopted to cool and dehumidify fresh air at different levels, so that the fresh air reaches lower temperature and moisture content before solid adsorption and dehumidification, is close to a saturation line, assists in rotary wheel dehumidification, meets the air supply state point after rotary wheel dehumidification, and simultaneously utilizes part of return air to heat and regenerate the solid moisture absorption material so as to recover the dehumidification performance of the moisture absorption material; the water chilling unit is closed in winter, two areas of a four-way reversing valve and a rotating wheel of the air-cooled heat pump type unit and the sensible heat recovery unit are adjusted to heat fresh air step by step, then the rotating wheel is adopted to humidify, and the required moisture content is provided by return air. The whole device preheats the regeneration air by utilizing the heat discharged by the condenser in summer, thereby saving or avoiding the energy consumption of the electric heater for providing the regeneration heat; in winter, the heat absorption of the evaporator is utilized to pre-cool the moisture-supplying air, so that a cooling device for returning air is omitted, and the energy efficiency of the fresh air processing device is improved.
In actual operation conditions, because the solid adsorption dehumidification is approximate to an isenthalpic process, in summer when fresh air passes through a dehumidification area of the rotary wheel type solid adsorption dehumidification equipment, the temperature rises while the moisture content is reduced, and therefore the fresh air needs to be cooled to a lower temperature in advance; on the contrary, in winter, the fresh air needs to be heated to a higher temperature. The energy consumption of the water-cooled water chilling unit, the air-cooled heat pump unit and the sensible heat recovery unit in the whole device for cooling and dehumidifying fresh air occupies a great proportion. Compared with the total energy consumption of a cold source system, the total energy consumption of the air-cooled unit under the same working condition is higher than that of the water-cooled unit, namely the performance coefficient is lower, so that the fresh air is subjected to multistage precooling for reducing the energy consumption. The device is provided with a water-cooled water chiller, an air-cooled heat pump type unit and a sensible heat recovery unit, wherein the water-cooled water chiller with lower energy consumption is adopted to pre-cool and dehumidify fresh air, the air-cooled heat pump type unit and the sensible heat recovery unit are adopted to further pre-cool and dehumidify the fresh air in sequence, the relative humidity of the air is always close to a saturation line in the process until the enthalpy value of the pre-cooled fresh air is the same as the enthalpy value of an indoor air supply state point. The water-cooled water chilling unit cools and dehumidifies fresh air by taking chilled water as a medium, and the air-cooled heat pump type unit and the sensible heat recovery unit directly cool and dehumidify the fresh air by utilizing the phase change of a refrigerant. The heating regeneration of the solid moisture absorption material in summer is another part of main energy consumption required to be input in the whole device, and the device utilizes the condenser of the sensible heat recovery unit to heat and regenerate the rotating wheel type solid adsorption dehumidification equipment by considering that a large amount of heat exhaust can be generated in the process of precooling fresh air by each unit and taking return air as a medium.
The refrigerating capacity or the heating capacity of the air-cooled heat pump type unit and the sensible heat recovery unit in the running process is determined and distributed according to the actual working condition. On one hand, the air-cooled heat pump type unit, the sensible heat recovery unit and the water-cooled water chilling unit need to meet sensible heat cooling load and partial latent heat cooling load required by fresh air in summer, including temperature rise caused by dehumidification of the rotating wheel, and need to meet heat load required by the fresh air in winter, including temperature drop caused by humidification of the rotating wheel; on the other hand, the heat discharged by the condenser (5) of the sensible heat recovery unit should meet the regeneration requirement of the rotary wheel type solid adsorption dehumidification equipment in summer (in a very special case, the insufficient part is supplemented by an electric heater), and the cold energy provided by the condenser (5) of the sensible heat recovery unit should ensure that the return air can provide enough moisture in winter.
Has the advantages that: compared with the prior art, the invention has the following advantages:
during the cooling season, the air conditioning system generally adopts a condensation dehumidification mode (adopting chilled water at about 7 ℃) to realize the cooling and dehumidification treatment of air, namely, the air is cooled to the dew point temperature under the condition of unchanged moisture content, then the relative humidity is kept to be close to 100%, and the sensible heat load and the latent heat load of the building are removed. The sensible to latent ratio in this process can only be varied within a certain range. When the latent heat load in a building is relatively high and exceeds the adjustable range of an air conditioning system, in order to meet the temperature and humidity requirements of a room at the same time, the condensed air is generally reheated to expand the variation range of the sensible heat-latent heat ratio. During the heating season, air conditioning system often directly heats up the heating to the new trend, leads to the relative humidity after the heating to be lower, and thermal comfort is relatively poor.
The main difference between the device of the invention and the traditional air conditioning device is that during the cooling season, the air after cooling and dehumidification is passed through the rotary wheel dehumidification equipment, and reheating of the air is avoided. In the rotary wheel dehumidification process, the change of the air state is approximate to an isenthalpic process, so that the temperature can be increased while dehumidification is performed, the temperature of the air can only be increased in the reheating process of the air, the humidity of the air cannot be adjusted, and the air is further dehumidified while the temperature is increased by the application of the rotary wheel dehumidification equipment. Because the rotary wheel dehumidification equipment shares part of the moisture load of the air, when the refrigeration unit and the heat pump unit condense and dehumidify the air, the temperature and the moisture content after precooling are higher than the temperature and the moisture content required before reheating, and the energy consumption of the refrigeration unit and the heat pump unit is reduced. The heating object of the traditional air conditioning system is air supply, while the heating device of the precooling type runner humidifying fresh air processing device is a regeneration area of the runner dehumidifying equipment, the device adopts a partial condenser to exhaust heat, the regeneration area of the runner dehumidifying equipment is heated and regenerated by taking return air as a medium, and the return air directly passes through the condenser, so that the energy utilization efficiency is obviously improved, the high-grade energy consumption required by the heating regeneration part is saved, and the problem of cold and heat offset is also avoided. Meanwhile, the device can be used in winter and summer, and can humidify fresh air by using the regeneration process of the rotating wheel in winter, so that the thermal comfort of a room is improved.
Drawings
FIG. 1 is a schematic diagram of a system of a fresh air treatment device in a pre-cooling runner humidifying process.
FIG. 2 shows the state points of the fresh air and return air treatment process in the summer pre-cooling runner humidifying process.
FIG. 3 shows the change flow and the corresponding position of each state point in the fresh air and return air treatment process in the summer pre-cooling runner humidifying process.
FIG. 4 shows the state points of the fresh air and return air treatment process in the winter preheating runner humidifying process.
Fig. 5 shows the change flow and the corresponding position of each state point in the fresh air and return air treatment process in the winter preheating type runner humidifying process.
The figure shows that: the system comprises a water-cooled water chilling unit fan coil 1, an air-cooled heat pump type unit evaporator 2, a sensible heat recovery unit evaporator 3, a rotary wheel type solid adsorption dehumidification device 4, a sensible heat recovery unit condenser 5, an electric heater 6, a chilled water circulating water pump 7, a water-cooled water chilling unit evaporator 8, a water-cooled water chilling unit compressor 9, a water-cooled water chilling unit condenser 10, a water-cooled water chilling unit throttle valve 11, a water-cooled water chilling unit cooling tower 12, a chilled water circulating water pump 13, an air-cooled heat pump type unit compressor 14, an air-cooled heat pump type unit four-way valve 15, an air-cooled heat pump type unit condenser 16, an air-cooled heat pump type unit throttle valve 17, a sensible heat recovery unit compressor 18, a sensible heat recovery unit.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings.
FIG. 1 shows a schematic diagram of a system in a pre-cooling type runner humidifying process. The device comprises a water-cooled water chilling unit, an air-cooled heat pump type unit, a sensible heat recovery unit, a rotary wheel type solid adsorption dehumidification device and an electric heater, wherein fresh air in summer sequentially passes through a dehumidification region of a water-cooled water chilling unit fan coil 1, an air-cooled heat pump type unit evaporator 2, a sensible heat recovery unit evaporator 3 and the rotary wheel type solid adsorption dehumidification device 4 and then is sent into a room, and return air sequentially passes through a regeneration region of a sensible heat recovery unit condenser 5, an electric heater 6 and the rotary wheel type solid adsorption dehumidification device 4 and then is discharged out of the room in the process of being processed.
The fan coil 1 of the water-cooled water chilling unit is connected with the evaporator 8 of the water-cooled water chilling unit through a chilled water circulating pipeline, and a chilled water circulating water pump 7 is arranged in the chilled water circulating pipeline. The water-cooled chiller evaporator 8 and the water-cooled chiller condenser 10 are connected through a refrigerant circulating pipeline, and the refrigerant sequentially passes through the water-cooled chiller evaporator 8, the water-cooled chiller compressor 9, the water-cooled chiller condenser 10 and the water-cooled chiller throttle valve 11 to realize refrigeration circulation. The cooling tower is connected with the condenser 10 of the water-cooled water chilling unit in a circulating way through cooling water, and a cooling water circulating water pump 13 is arranged in a cooling water circulating pipeline.
The air-cooled heat pump type unit evaporator 2 is in circulating connection with a refrigerant of the air-cooled heat pump type unit condenser 15, and the refrigerant sequentially passes through the air-cooled heat pump type unit evaporator 2, an air-cooled heat pump type unit compressor 14, the air-cooled heat pump type unit condenser 15 and an air-cooled heat pump type unit throttle valve 16 to realize refrigeration circulation.
And the sensible heat recovery unit evaporator 3 is in circulating connection with the sensible heat recovery unit condenser 5 through a refrigerant. The summer sensible heat recovery unit evaporator 3 is used for precooling and dehumidifying the treated fresh air, and the sensible heat recovery unit condenser 5 is used for heating the regenerated return air. When the air conditioner runs, fresh air sequentially passes through the dehumidification regions of the water-cooled water chiller unit fan coil 1, the air-cooled heat pump type unit evaporator 2, the sensible heat recovery unit evaporator 3 and the rotary wheel type solid adsorption dehumidification equipment 4 and is finally sent into the room. The sequential change conditions of the fresh air state points in fig. 2 are as follows: O-X-Y-Z-S-R. The return air passes through the regeneration zone of the sensible heat recovery unit condenser 5, the electric heater 6 and the rotary wheel type solid adsorption dehumidification equipment 4 in sequence, and the return air state changes into: R-H-P. The electric heater 6 can not work under the normal condition that the supply of the condensation heat is sufficient, and the consumption of high-grade electric energy is avoided.
The dehumidification area and the regeneration area of the rotary wheel type solid adsorption dehumidification equipment 4 are exchanged in winter, the sensible heat recovery unit evaporator 3 is used for heating the treated fresh air, and the sensible heat recovery unit condenser 5 is used for precooling the regenerated return air before supplying moisture. The water-cooled water chiller and the electric heater do not operate in winter, and fresh air passes through the regeneration zone of the air-cooled heat pump type chiller evaporator 2, the sensible heat recovery chiller evaporator 3 and the rotary wheel type solid adsorption dehumidification equipment 4 in sequence and is finally sent into the room. The sequential change conditions of the fresh air state points in fig. 4 are as follows: o ' -X ' -Y ' -S ' -R '. The return air loops through the dehumidification area of the sensible heat recovery unit condenser 5 and the runner type solid adsorption dehumidification equipment 4, and the return air state changes into: r '-C-P'.
The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the invention, and it is intended that all such modifications and equivalents fall within the scope of the invention as defined in the claims.
Claims (9)
1. A pre-cooling type fresh air processing device with runner humidifying function is characterized by comprising a water-cooling type water chilling unit, an air-cooling heat pump type unit, a sensible heat recovery unit and runner type solid adsorption dehumidification equipment which are sequentially arranged, wherein the water-cooling type water chilling unit comprises a water-cooling type water chilling unit evaporator (8), a water-cooling type water chilling unit compressor (9), a water-cooling type water chilling unit condenser (10), a water-cooling type water chilling unit throttling valve (11), a water-cooling type water chilling unit fan coil (1) connected with a chilled water outlet end and an inlet end of the water-cooling type water chilling unit evaporator (8), and a cooling tower (12) connected with a cooling water outlet end and an inlet end of the water-cooling type water chilling unit condenser (10), wherein a chilled water pump (7) is arranged between the chilled water outlet end of the water-cooling type water chilling unit fan coil (1) and the chilled water inlet end of, a cooling water pump (13) is arranged between a cooling water outlet end of the cooling tower (12) and a cooling water inlet end of the water-cooled chiller condenser (10), a refrigerant outlet end of the water-cooled chiller throttling valve (11) is connected with a refrigerant inlet end of the water-cooled chiller evaporator (8) through a pipeline, and a refrigerant inlet end of the water-cooled chiller compressor (9) is connected with a refrigerant outlet end of the water-cooled chiller evaporator (8) through a pipeline;
the air-cooled heat pump type unit comprises an air-cooled heat pump type unit evaporator (2), an air-cooled heat pump type unit compressor (14), an air-cooled heat pump type unit four-way reversing valve (15), an air-cooled heat pump type unit condenser (16) and an air-cooled heat pump type unit throttle valve (17), the refrigerant outlet end of the air-cooled heat pump type unit condenser (16) is connected with the refrigerant inlet end of the air-cooled heat pump type unit evaporator (2) through an air-cooled heat pump type unit throttle valve (17), the refrigerant inlet end and the refrigerant outlet end of the air-cooled heat pump type unit compressor (14) are respectively connected with any two opposite interface ends of a four-way reversing valve (15) of the air-cooled heat pump type unit, the refrigerant outlet end of the air-cooled heat pump type unit evaporator (2) and the refrigerant inlet end of the air-cooled heat pump type unit condenser (16) are respectively connected with the other two opposite interface ends of the four-way reversing valve (15) of the air-cooled heat pump type unit;
the sensible heat recovery unit comprises a sensible heat recovery unit evaporator (3), a sensible heat recovery unit compressor (18), a sensible heat recovery unit four-way reversing valve (19), a sensible heat recovery unit condenser (5) and a sensible heat recovery unit throttling valve (20), wherein a refrigerant inlet end of the sensible heat recovery unit evaporator (3) is connected with a refrigerant outlet end of the sensible heat recovery unit condenser (5) through the sensible heat recovery unit throttling valve (20), an inlet end and an outlet end of the sensible heat recovery unit compressor (18) are respectively connected with any two opposite interface ends of the sensible heat recovery unit four-way reversing valve (19), and an outlet end of the sensible heat recovery unit evaporator (3) and an inlet end of the sensible heat recovery unit condenser (5) are respectively connected with the other two opposite interface ends of the sensible heat recovery unit four-way reversing valve (19);
the rotary wheel type solid adsorption dehumidification equipment (4) comprises a dehumidification area and a regeneration area, and the sensible heat recovery unit evaporator (3) is arranged corresponding to the dehumidification area;
the dehumidification regions of the water-cooled water chilling unit fan coil (1), the air-cooled heat pump type unit evaporator (2), the sensible heat recovery unit evaporator (3) and the rotary wheel type solid adsorption dehumidification equipment (4) are sequentially arranged along the flow direction of fresh air, and the regeneration regions of the sensible heat recovery unit condenser (5) and the rotary wheel type solid adsorption dehumidification equipment (4) are sequentially arranged along the flow direction of return air.
2. The pre-cooling type fresh air processing device with rotary wheel humidifying function according to claim 1, wherein the water-cooled chiller fan coil (1) and the water-cooled chiller evaporator (8) are connected through a chilled water circulation pipeline, the water-cooled chiller evaporator (8) and the water-cooled chiller condenser (10) are connected through a refrigerant circulation pipeline, the water-cooled chiller condenser (10) and the cooling tower (12) are connected through a cooling water circulation pipeline, the air-cooled heat pump type chiller evaporator (2) and the air-cooled heat pump type chiller condenser (16) are connected through a refrigerant circulation pipeline, and the sensible heat recovery chiller evaporator (3) and the sensible heat recovery chiller condenser (5) are connected through a refrigerant circulation pipeline.
3. The pre-cooling type fresh air processing device with rotary wheel humidifying function according to claim 2, wherein an electric heater (6) is arranged between the sensible heat recovery unit condenser (5) and the regeneration zone of the rotary wheel type solid adsorption dehumidification equipment (4).
4. The precooling type fresh air processing device for humidifying by a rotating wheel as claimed in claim 3, wherein the regeneration area of the rotating wheel type solid adsorption dehumidification equipment (4) is dehumidified and regenerated by the return air heated by the sensible heat recovery unit condenser (5), and when the heat provided by the sensible heat recovery unit condenser (5) is not enough to dehumidify and regenerate the regeneration area of the rotating wheel type solid adsorption dehumidification equipment (4), the electric heater (6) is adopted to heat the return air in an auxiliary way to take away the moisture in the moisture absorption material, so as to recover the dehumidification performance of the moisture absorption material.
5. The pre-cooling type fresh air processing device with rotary wheel humidity control according to claim 1, 2, 3 or 4, wherein in the water-cooled chiller evaporator (8), chilled water and refrigerant of the water-cooled chiller are subjected to sensible heat exchange, and chilled water cooled in the water-cooled chiller evaporator (8) enters the fan coil (1) of the water-cooled chiller to perform primary cooling and dehumidification on fresh air; the refrigerant in the air-cooled heat pump type unit carries out secondary cooling and dehumidification on fresh air in an air-cooled heat pump type unit evaporator (2); the refrigerant in the sensible heat recovery unit carries out third-stage cooling dehumidification on fresh air in the sensible heat recovery unit evaporator (3).
6. The pre-cooling type fresh air processing device with rotary wheel humidity control as claimed in claim 1, 2, 3 or 4, characterized in that the cooling water and the refrigerant of the water-cooling type chiller carry out sensible heat exchange in the condenser (10) of the water-cooling type chiller in summer to absorb the heat discharged by the refrigerant, the cooling water and the outdoor air carry out total heat exchange in the cooling tower (12) to take away the heat of the cooling water by evaporation and heat absorption, and the water-cooling type chiller does not operate in winter.
7. The pre-cooling type fresh air processing device with rotary wheel humidifying function according to claim 2, 3 or 4, wherein the chilled water pump (7) is arranged in a chilled water circulation pipeline, and the cooling water pump (13) is arranged in a cooling water circulation pipeline.
8. The pre-cooling type fresh air processing device for humidifying by using the rotating wheel as claimed in claim 1, 2, 3 or 4, wherein in summer, the dehumidifying area of the rotating wheel type solid adsorption dehumidifying equipment (4) is positioned in the fresh air processing system to adsorb and dehumidify fresh air, the regenerating area is positioned in the return air processing system to regenerate and humidify return air, in winter, the dehumidifying area of the rotating wheel type solid adsorption dehumidifying equipment (4) is positioned in the return air processing system to absorb moisture of the return air, and the regenerating area is positioned in the fresh air processing system to humidify the fresh air.
9. The pre-cooling type fresh air processing device for humidifying by rotating wheel according to claim 1, 2, 3 or 4, characterized in that the air-cooled heat pump type unit evaporator (2) and the sensible heat recovery unit evaporator (3) are used for pre-cooling fresh air in summer and heating fresh air in winter, the sensible heat recovery unit condenser (5) is used for pre-heating return air in summer, and is used for pre-cooling return air in winter and exchanging in summer, and the functions are converted by adjusting the air-cooled heat pump type unit four-way reversing valve (15) and the sensible heat recovery unit four-way reversing valve (19).
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