CN102589058A - Efficient energy-saving air-conditioning system with independently controlled temperature and humidity and adjusting method thereof - Google Patents
Efficient energy-saving air-conditioning system with independently controlled temperature and humidity and adjusting method thereof Download PDFInfo
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- CN102589058A CN102589058A CN2011100033317A CN201110003331A CN102589058A CN 102589058 A CN102589058 A CN 102589058A CN 2011100033317 A CN2011100033317 A CN 2011100033317A CN 201110003331 A CN201110003331 A CN 201110003331A CN 102589058 A CN102589058 A CN 102589058A
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Abstract
The invention discloses an efficient energy-saving air-conditioning system with independently controlled temperature and humidity and an adjusting method of the efficient energy-saving air-conditioning system; the air-conditioning system comprises a freeze water circulating system consisting of a cold water chiller (5), a freeze water pump (6), a fresh air unit (1), a return air unit (2) and a pipeline of the system, a temperature and humidity acquiring unit and a system control unit; a surface cooler (18) of the fresh air unit (1) comprises a plurality of groups of heat exchanging units, the temperature and humidity acquiring unit comprises a temperature sensor (7) and a humidity sensor (8), which are installed in an air-conditioning room; the system control unit is used for timely adjusting a valve in the freeze water circulating system according to a deviation value between the temperature and humidity in the air-conditioning room and the temperature and humidity predetermined by the system to finish the independent control of the temperature and humidity in the air-conditioning room so as to adjust the water outlet temperature of the freeze water in the cold water chiller (5). The system provided by the invention realizes the variable water temperature operation of the cold water chiller, has the capability of deeply dehumidifying, and can obviously improve the working efficiency of the units, and reduces the energy consumption and the cost.
Description
Technical field
The present invention relates to air-conditioning system and control method thereof, relate in particular to high-efficiency energy-saving air conditioning system and control method thereof that a kind of humiture is independently controlled.
Background technology
Humiture independence control air conditioner system is a kind of novel air conditioning system, and it can realize the independent control to the temperature and humidity of air-conditioned room.Existing humiture independence control air conditioner system mainly dehumidifies to the new wind in the new blower fan group through two kinds of methods: a kind of is to utilize surface cooler that new wind is carried out dehumidification treatments; For example use typical dedicated outdoor air system (Dedicated Outdoor Air Systems; Be called for short DOAS), a kind of is to utilize the liquid or solid hygroscopic agent that new wind is carried out dehumidification treatments.
The DOAS system changes traditional chilled water parallel form into the series connection form; So-called series connection form is that the cryogenic freezing water (about 4～5 ℃) of handpiece Water Chilling Units supply is at first through new blower fan group; New wind is lowered the temperature and degree of depth dehumidifying, treat water temperature rise after about 15～18 ℃ again through terminal apparent cool equipment (for example dry coil pipe or cold emission furred ceiling) to the room air processing of lowering the temperature.The terminal cool equipment that shows of this system is not born system's humidity load, and system's humidity load is born by new blower fan group, so there is not the water phenomenon of coagulating in the running, air-conditioned room can reach the effect that health is clean, temperature is comfortable.Yet in the process that this system dehumidifies to new wind through new blower fan group, require handpiece Water Chilling Units that the chilled water (about 4～5 ℃) of lower temperature is provided, cause the operational efficiency of unit to descend, energy consumption increases, use cost increases.
In order to solve new blower fan group of DOAS system and return air unit demands of different to chilled water temperature; Tsing Hua Tong Fang discloses a kind of double-temperature refrigerator water unit (patent No.: ZL200410009292.1) that is used for air-conditioning system; The cool-down dehumidification that this double-temperature refrigerator water unit can provide the low-temperature cold water about 7 ℃ to be used for new blower fan group can provide the middle temperature cold water about 18 ℃ to be used for the terminal room temperature lowering that shows cool equipment again.Yet this double-temperature refrigerator water unit is applied in the DOAS system, and is also not obvious to the operational efficiency effect that improves unit, also can't regulate the chilled water temperature of unit according to the variation of indoor temperature and humidity automatically.
The liquid or solid hygroscopic agent is applied to the purpose that can reach fresh air dehumidification in the air-conditioning system, however this air-conditioning system in running, its liquid or solid hygroscopic agent all need regeneration, the regenerative process energy consumption is bigger.In addition,, also there is salt fog elegant problem in air when air is carried out dehumidification treatments, polluted indoor environment, do not meet health requirements because liquid desiccant is generally salting liquid.
Summary of the invention
The technical problem that the present invention will solve provides high-efficiency energy-saving air conditioning system and the control method thereof that a kind of humiture is independently controlled; This air-conditioning system not only can provide comfortable humiture to air-conditioned room; Humiture that can also on-line monitoring air-conditioned room air, and dynamic optimization is regulated the chilled water temperature that freezing unit provides on this basis, improves the chilled water leaving water temperature of handpiece Water Chilling Units as far as possible; Thereby greatly improve unit efficiency, reduce and use energy consumption, realize energy-efficient purpose.
The present invention discloses the high-efficiency energy-saving air conditioning system that a kind of humiture is independently controlled, and comprising: the system control unit and the chilled water circulatory system of being made up of handpiece Water Chilling Units, new blower fan group, return air unit and pipeline thereof also comprise the humiture collection unit;
The said chilled water circulatory system is linked in sequence by handpiece Water Chilling Units, chilled water pump, new blower fan group inlet pipeline, new blower fan group, new blower fan group outlet pipeline, return air unit inlet pipeline, return air unit, return air unit outlet pipeline and chilled water water return pipeline head and the tail successively and forms;
Cross-over connection has by-pass line between said return air unit inlet pipeline and the return air unit outlet pipeline, is respectively arranged with first control valve and second control valve on said return air unit outlet pipeline and the bypass line;
The surface cooler of said new blower fan group comprises many group heat exchange units, has in the ability of middle temperature chilled water through degree of depth dehumidifying under the state;
Said humiture collection unit comprises temperature sensor and the humidity sensor that is installed in the air-conditioned room, is used for the temperature and humidity of air in the on-line monitoring air-conditioned room and feeds back to said system control unit;
Said system control unit is used for according to the deviate between the predefined temperature and humidity of temperature and humidity and system of air in the air-conditioned room of said temperature sensor and humidity sensor collection, and the in good time chilled water leaving water temperature that the aperture and the said handpiece Water Chilling Units of said first control valve or second control valve are provided is regulated.
Preferably; The surface cooler of said new blower fan group is divided into the heat exchange unit that many groups work alone; The heat exchange unit that said many groups work alone is connected each other, and the delivery port of second group of heat exchange unit to the n group heat exchange unit is connected to first group of heat exchange unit through Common Ducts, wherein; N >=3, said first group of heat exchange unit connect said new blower fan group outlet pipeline.
Said first group of heat exchange unit is used for new wind is carried out pre-cooled, and the heat exchange unit of respectively organizing after said second group of heat exchange unit, the 3rd group of heat exchange unit reach is used for air is lowered the temperature and degree of depth dehumidifying;
New wind is at first through said first group of heat exchange unit, carry out pre-cooled, then successively through said second group of heat exchange unit, the 3rd group of heat exchange unit and after respectively organize heat exchange unit, lower the temperature and the degree of depth dehumidifies;
Chilled water at first parallel connection get into said second group of heat exchange unit, the 3rd group of heat exchange unit and after respectively organize heat exchange unit, compile from delivery port of each group heat exchange unit then and get into said first group of heat exchange unit.
Said system control unit comprises: temperature controller, humidity controller, signal selector and unit cold water temperature controller;
Said temperature controller is used to receive the temperature of air in the air-conditioned room that said temperature sensor and humidity sensor gather; And according to the deviate between the predefined temperature of temperature and system of air in the air-conditioned room, output is to the control signal of said first control valve or to said signal selector output temperature conditioning signal;
Said humidity controller is used to receive the humidity of air in the air-conditioned room that said humidity sensor gathers; And according to the deviate between the predefined humidity of humidity and system of air in the air-conditioned room, output is to the control signal of said second control valve or to said signal selector output temperature conditioning signal;
Said unit cold water temperature controller sends the conditioning signal of regulating said handpiece Water Chilling Units leaving water temperature according to the output signal of signal selector.
The signal input part of said signal selector connects the signal output part of said temperature controller and humidity controller, and said unit cold water temperature controller is used for after receiving the output signal that receives signal selector, sending the adjustment signal of regulating the handpiece Water Chilling Units leaving water temperature.
The present invention also discloses the control method of the high-efficiency energy-saving air conditioning system that a kind of humiture as stated independently controls, and this control method comprises the steps:
Steps A. through temperature sensor and humidity sensor the air parameter in the air-conditioned room is carried out on-line monitoring;
Step B. system control unit is dynamically adjusted the chilled water temperature that handpiece Water Chilling Units provides according to the air parameter of said temperature sensor, humidity sensor monitoring.
Said steps A comprises: said temperature sensor and humidity sensor are gathered the temperature signal T and the moisture signal RH of air in the air-conditioned room respectively, and said temperature signal T and moisture signal RH pass to the temperature controller and the humidity controller of said system control unit respectively as input signal.
Said step B comprises:
Step B1: said temperature controller receives the temperature signal T of the interior air of said air-conditioned room of said temperature sensor collection, and with this temperature signal T and the predefined temperature signal T of system
0Compare, send corresponding valve control signal and adjustment signal according to both deviates;
Step B2: said humidity controller receives the moisture signal RH of the interior air of said air-conditioned room of said humidity sensor collection, and with this moisture signal RH and the predefined moisture signal RH of system
0Compare, send corresponding valve control signal and adjustment signal according to both deviates;
Step B3: said first control valve is realized the control to chilled-water flow in the said return air unit according to the valve regulated Signal Regulation valve opening of said temperature controller output;
Step B4: said second control valve is realized the control to said new blower fan group chilled-water flow according to the valve regulated Signal Regulation valve opening of said humidity controller output;
Step B5: the signal selector of said system control unit is judged the adjustment signal that said temperature controller and said humidity controller send, and is selected one of them adjustment signal to send to unit cold water temperature controller;
Step B6: said unit cold water temperature controller sends to said handpiece Water Chilling Units with the adjustment signal of receiving, said handpiece Water Chilling Units correspondence is made the action of raising chilled water leaving water temperature or downward modulation chilled water leaving water temperature.
In said step B1:
If the temperature signal T of air is less than the predefined temperature signal T of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said first control valve during greater than a set-point a; When the aperture of said first control valve during greater than preset minimum threshold aperture said temperature controller send the valve control signal that valve opening turns down to said first control valve, otherwise send the adjustment signal T that water temperature raises to said signal selector
TU
If the temperature signal T of air is greater than the predefined temperature signal T of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said first control valve during greater than a set-point a; When the aperture of said first control valve during less than preset high threshold aperture said temperature controller send valve opening to said first control valve and transfer big valve control signal, otherwise send the adjustment signal T of water temperature downward modulation to said signal selector
TD
In said step B2, whether the temperature signal T that at first judges air in the said air-conditioned room is greater than the predefined temperature signal T of system
0If then skip moisture signal RH and the predefined moisture signal RH of system with air in the air-conditioned room
0The step that compares does not start the adjusting to said second control valve, otherwise gets into following steps:
If the moisture signal RH of air is less than the predefined moisture signal RH of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said second control valve during greater than a given numerical value b; When the aperture of said second control valve during greater than preset minimum threshold aperture said humidity controller send the valve control signal that valve opening turns down to said second control valve, otherwise send the adjustment signal T that water temperature raises to said signal selector
HU
If the moisture signal RH of air is greater than the predefined moisture signal RH of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said second control valve during greater than a given numerical value b; When the aperture of said second control valve during less than preset high threshold aperture said humidity controller send valve opening to said second control valve and transfer big valve control signal, otherwise send the adjustment signal T of water temperature downward modulation to said signal selector
HD
Said step B3 comprises:
If said first control valve is received the valve control signal that valve opening turns down, then the aperture with said first control valve turns down to preset minimum threshold aperture gradually;
If said first control valve receives valve opening and transfers big valve control signal, then will the aperture of said first control valve transfer gradually big to the high threshold aperture of presetting.
Said step B4 comprises:
If said second control valve is received the valve control signal that valve opening turns down, then the aperture with said second control valve turns down to preset minimum threshold aperture gradually;
If said second control valve receives valve opening and transfers big valve control signal, then will the aperture of said second control valve transfer gradually big to the high threshold aperture of presetting.
Said step B5 comprises:
Said signal selector judges whether to exist the adjustment signal of downward modulation of chilled water water temperature or rise; When said temperature controller and said humidity controller sent on the chilled water water temperature tonal signal simultaneously, said signal selector sent tonal signal on the chilled water water temperature to said unit cold water temperature controller; When in said temperature controller and the said humidity controller any sent under the chilled water water temperature tonal signal, said signal selector sent tonal signal under the chilled water water temperature to said unit cold water temperature controller.
Compared with prior art, the present invention has following beneficial effect: 1) not only can also utilize temperature sensor and humidity sensor that the air temperature in the air-conditioned room, humidity parameter are carried out on-line monitoring for air-conditioned room provides comfortable temperature and humidity; Use operation optimal control program; The supply water temperature that the dynamic adjustments handpiece Water Chilling Units provides is realized the change water temperature operation of handpiece Water Chilling Units, thereby improves the operating efficiency of unit; Reduce energy resource consumption, reduce use cost; 2) the surface-type heat exchange coil of said new blower fan group is divided into the heat exchange unit that many groups work alone; Wherein first group of heat exchange unit be used for new wind is carried out pre-cooled, second group of heat exchange unit and after the heat exchange unit of respectively organizing be used for air is lowered the temperature and degree of depth dehumidifying.
Description of drawings
Fig. 1 is that the structure and the pipeline of the high-efficiency energy-saving air conditioning system independently controlled of humiture of the present invention connects sketch map;
Fig. 2 is the structural representation of new blower fan group 1 in the high-efficiency energy-saving air conditioning system independently controlled of humiture of the present invention;
Fig. 3 is the functional-block diagram that the humiture optimization of the high-efficiency energy-saving air conditioning system independently controlled of humiture of the present invention is regulated;
Fig. 4 is the fundamental diagram of the system control unit of the high-efficiency energy-saving air conditioning system independently controlled of humiture of the present invention;
Fig. 5 is the software flow pattern of the control method of the high-efficiency energy-saving air conditioning system independently controlled of humiture of the present invention;
Fig. 6 is the concrete software flow pattern of step S2 in the control method of the high-efficiency energy-saving air conditioning system independently controlled of humiture of the present invention;
The explanation of each label is following in the accompanying drawing:
1 is new blower fan group, and 2 is the return air unit, and 3,4 are respectively second, first control valve, and 5 is handpiece Water Chilling Units; 6 is chilled water pump, and 7 is temperature sensor, and 8 is humidity sensor, and 9 is new blower fan group inlet pipeline; 10 is the chilled water water return pipeline, and 11 is new blower fan group outlet pipeline, and 12 is return air unit inlet pipeline, and 13 is return air unit outlet pipeline; 14 is bypass line, and 15 is first group of heat exchange unit, and 16 is second group of heat exchange unit, and 17 is the 3rd group of heat exchange unit; 18 is surface cooler, and 101 is that temperature controller, 102 is that humidity controller, 103 is signal selector, and 104 is unit cold water temperature controller.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is done further explain below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, the high-efficiency energy-saving air conditioning system that humiture of the present invention is independently controlled comprises:
By the chilled water circulatory system that handpiece Water Chilling Units 5, chilled water pump 6, new blower fan group inlet pipeline 9, new blower fan group 1, new blower fan group outlet pipeline 11, return air unit inlet pipeline 12, return air unit 2, return air unit outlet pipeline 13 and chilled water water return pipeline 10 head and the tail successively are linked in sequence and constitute, the chilled water circulation between new blower fan group 1, return air unit 2 and each pipeline that is used for handpiece Water Chilling Units 5 is produced is carried; Cross-over connection has by-pass line 14 between said return air unit inlet pipeline 12 and the return air unit outlet pipeline 13, is respectively arranged with first control valve 4 and second control valve 3 on said return air unit outlet pipeline 13 and the bypass line 14;
Humiture collection unit by the temperature sensor 7 and the humidity sensor 8 that are installed in the air-conditioned room are formed is used for the interior temperature and humidity of on-line monitoring air-conditioned room;
System control unit; Comprise temperature controller 101, humidity controller 102, signal selector 103 and unit cold water temperature controller 104; Be used for the aperture of said first control valve 4 or second control valve 3 and the chilled water leaving water temperature that handpiece Water Chilling Units 5 provides being regulated in good time according to the deviate between the predefined temperature and humidity of temperature and humidity and system of air in the air-conditioned room of said temperature sensor 7 and humidity sensor 8 collections.
Introduce the concrete course of work of high-efficiency energy-saving air conditioning system cool-down dehumidification of the present invention below in conjunction with Fig. 1.During air-conditioning system work; The chilled water of said handpiece Water Chilling Units 5 supplies can get into said new blower fan group 1 from said new blower fan group inlet pipeline 9 earlier; New wind in the said new blower fan group 1 carries out cool-down dehumidification; The water capacity of new wind is brought down below the water capacity that air-conditioned room requires, sends into air-conditioned room then; Chilled water be through can getting into said return air unit 2 via said new blower fan group outlet pipeline 11, return air unit inlet pipeline 12 after the said new blower fan group 1, to the processing of lowering the temperature of the return air in the said return air unit 2, sends into air-conditioned room then.The chilled water of said return air unit 2 finally can flow back to said handpiece Water Chilling Units 5 via return air unit outlet pipeline 13, chilled water water return pipeline 10, realizes the circulation repetitive process of cool-down dehumidification.
The present invention's cross-over connection between said return air unit inlet pipeline 12 and return air unit outlet pipeline 13 has bypass line 14; Thereby the chilled water that from new blower fan group outlet pipeline 11, flows out not only can be transported in the return air unit inlet pipeline 12, can also part directly be diverted in the return air unit outlet pipeline 13.Be respectively arranged with first control valve 4 and second control valve 3 on said return air unit outlet pipeline 13 and the bypass line 14; Can regulate the aperture of said first control valve 4 and second control valve 3 through system control unit of the present invention; Thereby realize chilled-water flow that gets into new blower fan group 1 and return air unit 2 and the chilled water leaving water temperature that handpiece Water Chilling Units 5 provides are carried out dynamic adjustments and distribute rationally, the temperature and humidity in the air-conditioned room is remained in the interval range of default.
Fig. 2 is the structural representation of the new blower fan group 1 of high-efficiency energy-saving air conditioning system of the present invention.As shown in Figure 2; The surface cooler 18 of said new blower fan group 1 comprises the heat exchange unit that many groups work alone; The heat exchange unit that said many groups work alone is connected each other, and the delivery port of second group of heat exchange unit 16 to n group heat exchange unit is connected to first group of heat exchange unit 15 through Common Ducts, wherein; N >=3, said first group of heat exchange unit 15 connects said new blower fan group outlet pipeline 11.In the heat exchange unit that said many groups work alone, it is pre-cooled that first group of heat exchange unit 15 is used for new wind is carried out, second group of heat exchange unit 16, the 3rd group of heat exchange unit 17 and after the heat exchange unit of respectively organizing mainly be used for to air cooling-down and degree of depth dehumidifying.During air-conditioning system work; The chilled water parallel connection gets into said second group of heat exchange unit 16, the 3rd group of heat exchange unit 17 and subsequent respectively organizes heat exchange unit; Accomplish the dehumidifying of the air dewetting and the degree of depth; Respectively organize afterwards and get into said first group of heat exchange unit 15 again after chilled water that heat exchange unit flows out is concentrated, accomplish the pre-cooled work of new wind, the new wind water capacity of handling through new blower fan group 1 is lower than the water capacity under the room air design point.
Below in conjunction with Fig. 3 and Fig. 4 the structure and the operation principle of the system control unit of high-efficiency energy-saving air conditioning system of the present invention are elaborated.As shown in Figure 3, said system control unit comprises: temperature controller 101, humidity controller 102, signal selector 103 and unit cold water temperature controller 104.
Said temperature controller 101 is used to receive the temperature of air in the air-conditioned room that said temperature sensor 7 gathers; And according to the deviate between the predefined temperature of temperature and system of air in the air-conditioned room, output is to the control signal of said first control valve 4 or to said signal selector 103 output temperature conditioning signals.Like Fig. 4; The control procedure of said temperature controller 101 is: the absolute value that 1) is lower than the predefined temperature of system and both differences when the temperature of air in the air-conditioned room is during greater than a set-point a (being that temperature is on the low side in the air-conditioned room); Said temperature controller 101 detects the aperture of said first control valve 4; Send valve control signal that valve opening turn down greater than the then said temperature controller of presetting 101 of minimum threshold aperture to said first control valve 4 if detect the aperture of said first control valve 4 of back discovery, be less than or equal to the then said temperature controller 101 of preset minimum threshold aperture sends adjustment signal T from the water temperature rise to said signal selector 103 if detect the aperture of said first control valve 4 of back discovery
TU2) absolute value that is higher than the predefined temperature of system and both differences when the temperature of air in the air-conditioned room is during greater than a set-point a (being temperature drift in the air-conditioned room); Said temperature controller 101 detects the aperture of said first control valve 4; Send valve opening less than the preset then said temperature controller 101 of high threshold aperture to said first control valve 4 and transfer big valve control signal if detect the aperture of finding said first control valve 4 in the back, send the adjustment signal T of water temperature downward modulation to said signal selector 103 more than or equal to the preset then said temperature controller 101 of high threshold aperture if detect the aperture of finding said first control valve 4 in the back
TDAnd after said first control valve 4 receives the valve control signal that valve opening turns down; Can the aperture of said first control valve 4 be turned down gradually to preset minimum threshold aperture; Thereby the chilled-water flow that gets into return air unit 2 is diminished, and the temperature in the air-conditioned room just can raise gradually.In like manner; After if said first control valve 4 receives that valve opening is transferred big valve control signal; Can will the aperture of said first control valve 4 transfer big gradually to the high threshold aperture of presetting; Thereby can make the chilled water flow quantitative change that gets into return air unit 2 big, the temperature in the air-conditioned room just can reduce gradually.
Said humidity controller 102 is used to receive the humidity of air in the air-conditioned room that said humidity sensor 8 gathers; And according to the deviate between the predefined humidity of humidity and system of air in the air-conditioned room, output is to the control signal of said second control valve 3 or to said signal selector 103 output temperature conditioning signals.Like Fig. 4, the control procedure of said humidity controller 102 is: whether the temperature signal T that at first judges air in the said air-conditioned room is greater than the predefined temperature signal T of system
0If then do not start adjusting to said second control valve 3; Otherwise entering following steps: the absolute value that 1) is lower than the predefined humidity of system and both differences when (relatively) humidity of air in the air-conditioned room is during greater than a set-point b (being that humidity is on the low side in the air-conditioned room); Said humidity controller 102 detects the aperture of said the 3rd control valve 3; Send valve control signal that valve opening turn down greater than the then said humidity controller of presetting 102 of minimum threshold aperture to said second control valve 3 if detect the aperture of said second control valve 3 of back discovery, be less than or equal to the then said humidity controller 102 of preset minimum threshold aperture sends adjustment signal T from the water temperature rise to said signal selector 103 if detect the aperture of said second control valve 3 of back discovery
HU2) absolute value that is higher than the predefined humidity of system and both differences when (relatively) humidity of air in the air-conditioned room is during greater than a set-point b (being that humidity is higher in the air-conditioned room); Said humidity controller 102 detects the aperture of said second control valve 3; Send valve opening less than the preset then said humidity controller 102 of high threshold aperture to said second control valve 3 and transfer big valve control signal if detect the aperture of finding said second control valve 3 in the back, send the adjustment signal T of water temperature downward modulation to said signal selector 103 more than or equal to the preset then said humidity controller 102 of high threshold aperture if detect the aperture of finding said second control valve 3 in the back
HDAnd after said second control valve 3 receives the valve control signal that valve opening turns down; Can the aperture of said second control valve 3 be turned down gradually to preset minimum threshold aperture; Thereby the chilled-water flow that gets into new blower fan group 1 is diminished, and (relatively) humidity in the air-conditioned room just can raise gradually.In like manner; After if said second control valve 3 receives that valve opening is transferred big valve control signal; Can will the aperture of said second control valve 3 transfer big gradually to the high threshold aperture of presetting; Thereby can make the chilled water flow quantitative change that gets into new blower fan group 1 big, (relatively) humidity in the air-conditioned room just can reduce gradually.
In the control procedure of more than describing; Set-point a can be a positive number; As 0.5 ℃; 1 ℃ etc., the temperature of air can surpass this interval and then need regulate first control valve 4 or chilled water leaving water temperature fluctuating in a positive and negative less interval around the temperature of default in the expression air-conditioned room.Set-point b also is a positive number, and as 3%, 5% etc., the humidity of air can surpass this interval and then need regulate second control valve 3 or chilled water leaving water temperature positive and negative less fluctuates in interval around the humidity of default in the expression air-conditioned room.
Like Fig. 3, the signal input part of said signal selector 103 connects the signal output part of said temperature controller 101 and humidity controller 102, and the signal output part of said signal selector 103 connects said unit cold water temperature controller 104.Before address; When if the aperture that humidity controller 102 detects discovery first valve 4 or second valve 3 has reached the highest or minimum threshold aperture; Promptly can't regulate under the situation of temperature in the air-conditioned room or humidity, can send the adjustment signal through the mode of controlling opening of valve.At this moment the adjustment signal is transfused to said signal selector 103; Said signal selector 103 can select a rise water temperature or downward modulation water temperature signal to send to said unit cold water temperature controller 104; So said unit cold water temperature controller 104 sends the control signal of regulating handpiece Water Chilling Units 5 leaving water temperatures; Thereby can realize the chilled water temperature of dynamic adjustments handpiece Water Chilling Units 5, greatly reduce energy consumption, improve the purpose of unit efficiency.
Should be appreciated that the present invention installs a bypass line 14 between return air unit inlet pipeline 12 and return air unit outlet pipeline 13, and one second control valve 3 is set on this bypass line 14, have very big effect.Because return air unit 2 unmatched situation may occur with new blower fan group 1 required chilled-water flow; For example on the low side when the temperature in the air-conditioned room, when humidity is higher; Said return air unit 2 required chilled-water flows need be turned down; And said new blower fan group 1 required chilled-water flow need be transferred greatly, were it not for bypass line 14 and the 3rd control valve 3 are installed, and is turning down first control valve 4, is satisfying under the situation of return air unit 2 required chilled-water flows so; Chilled water just can't return chilled water water return pipeline 10 in a large number, thereby can't improve the chilled water of big flow for new blower fan group 1.After the bypass line 14 and second control valve 3 have been installed; Even turning down first control valve 4, satisfying under the situation of return air unit 2 required chilled-water flows; Still can make chilled water return chilled water water return pipeline 10 in a large number, thereby be the chilled water that new blower fan group 1 improves big flow through opening the aperture of big second control valve 3; Reduce the humidity in the air-conditioned room, realized the independent control of temperature and humidity thus.
As shown in Figure 5, the control method of the high-efficiency energy-saving air conditioning system that humiture of the present invention is independently controlled may further comprise the steps:
Step S1: the air parameter through in temperature sensor 7 and 8 pairs of air-conditioned rooms of humidity sensor carries out on-line monitoring.
Said temperature sensor 7 is arranged in the air-conditioned room with humidity sensor 8; Be used to gather temperature signal T and the moisture signal RH of air in the air-conditioned room, and said temperature signal T and moisture signal RH are distinguished the temperature controller 101 and the humidity controller 102 of transmission system control module as input signal.
Step S2: system control unit is dynamically adjusted the chilled water temperature that handpiece Water Chilling Units 5 provides according to the temperature and humidity of air in the air-conditioned room of said temperature sensor 7 and humidity sensor 8 collections.
As shown in Figure 6, said step S2 specifically may further comprise the steps:
Step S201: said temperature controller 101 receives the interior temperature signal T of air-conditioned room that said temperature sensor 7 is gathered, and with this temperature signal T and the predefined temperature signal T of system
0Compare, according to temperature signal T in the air-conditioned room and the predefined temperature signal T of system
0Deviate send corresponding valve control signal and chilled water temperature conditioning signal.
In step S201, said temperature controller 101 sends corresponding valve control signal and chilled water temperature conditioning signal according to comparing result, specifically comprises following operating procedure:
If the temperature signal T of air is less than the predefined temperature signal T of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said first control valve 4 during greater than a set-point a; When the aperture of said first control valve 4 during greater than preset minimum threshold aperture said temperature controller 101 send the valve control signal that valve opening turns down to said first control valve 4, otherwise said temperature controller 101 sends the adjustment signal T that water temperature raises to said signal selector 103
TU
If the temperature signal T of air is greater than the predefined temperature signal T of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said first control valve 4 during greater than a set-point a; When the aperture of said first control valve 4 during less than preset high threshold aperture said temperature controller 101 send valve opening to said first control valve 4 and transfer big valve control signal, otherwise said temperature controller 101 sends the adjustment signal T of water temperature downward modulation to said signal selector 103
TD
In more than describing; Set-point a can be a less positive number, as 0.5 ℃, and 1 ℃ etc.; The temperature of air can surpass this interval and then need regulate first control valve 4 or chilled water leaving water temperature fluctuating in a positive and negative less interval around the temperature of default in the expression air-conditioned room.
Step S202: said humidity controller 102 receives the interior moisture signal RH of air-conditioned room that said humidity sensor 8 is gathered, and with this moisture signal RH and the predefined moisture signal RH of system
0Compare, according to moisture signal RH in the air-conditioned room and the predefined moisture signal RH of system
0Deviate send corresponding valve control signal and chilled water temperature conditioning signal.
In step S202, whether the temperature signal T that at first judges air in the said air-conditioned room is greater than the predefined temperature signal T of system
0If then skip moisture signal RH and the predefined moisture signal RH of system with air in the air-conditioned room
0The step that compares does not start the adjusting to said second control valve 3, otherwise gets into following steps:
If the moisture signal RH of air is less than the predefined moisture signal RH of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said second control valve 3 during greater than a given numerical value b; When the aperture of said second control valve 3 during greater than preset minimum threshold aperture said humidity controller 102 send the valve control signal that valve opening turns down to said second control valve 3, otherwise said humidity controller 102 sends the adjustment signal T that water temperature raises to said signal selector 103
HU
If the moisture signal RH of air is greater than the predefined moisture signal RH of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said second control valve 3 during greater than a given numerical value b; When the aperture of said second control valve 3 during less than preset high threshold aperture said humidity controller 102 send valve opening to said second control valve 3 and transfer big valve control signal, otherwise said humidity controller 102 sends the adjustment signal T of water temperature downward modulation to said signal selector 103
HD
In more than describing; Set-point b also is a less positive number, as 3%, 5% etc.; The humidity of air can surpass this interval and then need regulate second control valve 3 or chilled water leaving water temperature fluctuating in a positive and negative less interval around the humidity of default in the expression air-conditioned room.
Step S203: said first control valve 4 is realized the control to chilled-water flow in the said return air unit 2 according to the valve regulated Signal Regulation valve opening of said temperature controller 101 outputs; Specifically comprise:
If said first control valve 4 is received the valve control signal that valve opening turns down, then the aperture with said first control valve 4 turns down to preset minimum threshold aperture gradually;
If said first control valve 4 receives valve opening and transfers big valve control signal, then will the aperture of said first control valve 4 transfer gradually big to the high threshold aperture of presetting.
Step S204: said second control valve 3 is realized the control to said new blower fan group 1 chilled-water flow according to the valve regulated Signal Regulation valve opening of said humidity controller 102 outputs; Specifically comprise:
If said second control valve 3 is received the valve control signal that valve opening turns down, then the aperture with said second control valve 3 turns down to preset minimum threshold aperture gradually;
If said second control valve 3 receives valve opening and transfers big valve control signal, then will the aperture of said second control valve 3 transfer gradually big to the high threshold aperture of presetting.
Step S205: the signal selector 103 of said system control unit selects a chilled water temperature conditioning signal to send to unit cold water temperature controller 104 from the chilled water temperature conditioning signal that said temperature controller 101 and said humidity controller 102 send.
In step S205, said signal selector 103 judges whether to exist the adjustment signal of a water temperature downward modulation or rise:
When said temperature controller 101 and said humidity controller 102 sent on the chilled water water temperature tonal signal simultaneously, said signal selector 103 sent tonal signal on the chilled water water temperature to said unit cold water temperature controller 104;
When in said temperature controller 101 and the said humidity controller 102 any sent under the chilled water water temperature tonal signal, said signal selector 103 sent tonal signal under the chilled water water temperature to said unit cold water temperature controller 104.
Step S206: said unit cold water temperature controller 104 sends to said handpiece Water Chilling Units 5 with the adjustment signal of receiving, said handpiece Water Chilling Units 5 correspondences are made the action of raising chilled water leaving water temperature or downward modulation chilled water leaving water temperature.
In step S206; After said handpiece Water Chilling Units 5 was received the adjustment signal, the corresponding water temperature that raises chilled water leaving water temperature or downward modulation chilled water leaving water temperature of making was regulated action, thereby realizes the dynamic adjustments of chilled water temperature; Reduce energy consumption, improve the operating efficiency of unit.
In sum, high-efficiency energy-saving air conditioning system that humiture of the present invention is independently controlled and control method thereof not only can provide comfortable temperature and humidity for air-conditioned room; Can also utilize temperature sensor and humidity sensor that the air temperature in the air-conditioned room, humidity parameter are carried out on-line monitoring, use operation optimal control program, the supply water temperature that the dynamic adjustments handpiece Water Chilling Units provides; Realize the change water temperature operation of handpiece Water Chilling Units; Improve the operating efficiency of unit, reduce energy resource consumption, reduce use cost.The surface cooler 18 of said new blower fan group 1 is divided into the heat exchange unit that many groups work alone; Have in the ability of middle temperature chilled water through degree of depth dehumidifying under the state; Wherein first group of heat exchange unit 15 be used for new wind is carried out pre-cooled, second group of heat exchange unit 16, the 3rd group of heat exchange unit 17 and after the heat exchange unit of respectively organizing be used for air is lowered the temperature and degree of depth dehumidifying.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. high-efficiency energy-saving air conditioning system that humiture is independently controlled; Comprise: the system control unit and the chilled water circulatory system of being made up of handpiece Water Chilling Units (5), new blower fan group (1), return air unit (2) and pipeline thereof is characterized in that: also comprise the humiture collection unit;
The said chilled water circulatory system is linked in sequence by handpiece Water Chilling Units (5), chilled water pump (6), new blower fan group inlet pipeline (9), new blower fan group (1), new blower fan group outlet pipeline (11), return air unit inlet pipeline (12), return air unit (2), return air unit outlet pipeline (13) and chilled water water return pipeline (10) head and the tail successively and forms;
Cross-over connection has by-pass line (14) between said return air unit inlet pipeline (12) and the return air unit outlet pipeline (13), is respectively arranged with first control valve (4) and second control valve (3) on said return air unit outlet pipeline (13) and the bypass line (14);
The surface cooler of said new blower fan group (1) comprises many group heat exchange units, is used at warm chilled water through degree of depth dehumidifying under the state;
Said humiture collection unit comprises temperature sensor (7) and the humidity sensor (8) that is installed in the air-conditioned room, is used for the temperature and humidity of air in the on-line monitoring air-conditioned room;
Deviate in the air-conditioned room that said system control unit is used for gathering according to said temperature sensor (7) and humidity sensor (8) between the predefined temperature and humidity of temperature and humidity and system of air is regulated the chilled water leaving water temperature that the aperture and the said handpiece Water Chilling Units (5) of said first control valve (4) or second control valve (3) provides in good time.
2. the high-efficiency energy-saving air conditioning system that humiture according to claim 1 is independently controlled; It is characterized in that: the surface cooler (18) of said new blower fan group (1) is divided into the heat exchange unit that many groups work alone; The heat exchange unit that said many groups work alone is connected each other; Second group of heat exchange unit (16) to the delivery port of n group heat exchange unit is connected to first group of heat exchange unit (15) through Common Ducts; Wherein, n >=3, said first group of heat exchange unit (15) connects said new blower fan group outlet pipeline (11).
3. the high-efficiency energy-saving air conditioning system that humiture according to claim 2 is independently controlled; It is characterized in that: said first group of heat exchange unit (15) is used for new wind is carried out pre-cooled, and said second group of heat exchange unit (16), the 3rd group of heat exchange unit (17) and the heat exchange unit of respectively organizing afterwards are used for air is lowered the temperature and degree of depth dehumidifying;
New wind is at first through said first group of heat exchange unit (15), carry out pre-cooled, then successively through said second group of heat exchange unit (16), the 3rd group of heat exchange unit (17) and afterwards respectively organize heat exchange unit, lower the temperature and the degree of depth dehumidifies;
Chilled water at first parallel connection get into said second group of heat exchange unit (16), the 3rd group of heat exchange unit (17) and after respectively organize heat exchange unit, compile from delivery port of each group heat exchange unit then and get into said first group of heat exchange unit (15).
4. the high-efficiency energy-saving air conditioning system of independently controlling according to the described humiture of the arbitrary claim of claim 1 to 3, it is characterized in that: said system control unit comprises: temperature controller (101), humidity controller (102), signal selector (103) and unit cold water temperature controller (104);
Said temperature controller (101) is used to receive the temperature of air in the air-conditioned room that said temperature sensor (7) gathers; And according to the deviate between the predefined temperature of temperature and system of air in the air-conditioned room; Output is to the control signal of said first control valve (4), and to said signal selector (103) output chilled water temperature conditioning signal;
Said humidity controller (102) is used to receive the humidity of air in the air-conditioned room that said humidity sensor (8) gathers; And according to the deviate between the predefined humidity of humidity and system of air in the air-conditioned room; Output is to the control signal of said second control valve (3), and to said signal selector (103) output chilled water temperature conditioning signal;
Said unit cold water temperature controller (104) sends the conditioning signal of regulating said handpiece Water Chilling Units (5) chilled water leaving water temperature according to the output signal of signal selector (103).
5. the control method of the high-efficiency energy-saving air conditioning system independently controlled of a humiture as claimed in claim 1, it is characterized in that: this control method comprises the steps:
Steps A: the air parameter in the air-conditioned room is carried out on-line monitoring through temperature sensor (7) and humidity sensor (8);
Step B: system control unit is dynamically adjusted the chilled water leaving water temperature of handpiece Water Chilling Units (5) according to the air parameter of said temperature sensor (7) and humidity sensor (8) monitoring.
6. the control method of the high-efficiency energy-saving air conditioning system that humiture according to claim 5 is independently controlled; It is characterized in that; Said steps A comprises: said temperature sensor (7) and humidity sensor (8) are gathered the temperature signal T and the moisture signal RH of air in the air-conditioned room respectively, and said temperature signal T and moisture signal RH pass to the temperature controller (101) and the humidity controller (102) of said system control unit respectively as input signal.
7. the control method of the high-efficiency energy-saving air conditioning system that humiture according to claim 5 is independently controlled is characterized in that, said step B comprises:
Step B1: said temperature controller (101) receives the temperature signal T of the interior air of air-conditioned room of said temperature sensor (7) collection, and with this temperature signal T and the predefined temperature signal T of system
0Compare, send corresponding valve control signal and chilled water temperature conditioning signal according to both deviates;
Step B2: said humidity controller (102) receives the moisture signal RH of the interior air of air-conditioned room of said humidity sensor (8) collection, and with this moisture signal RH and the predefined moisture signal RH of system
0Compare, send corresponding valve control signal and chilled water temperature conditioning signal according to both deviates;
Step B3: said first control valve (4) is realized the control to chilled-water flow in the said return air unit (2) according to the valve regulated Signal Regulation valve opening of said temperature controller (101) output;
Step B4: said second control valve (3) is realized the control to said new blower fan group (1) chilled-water flow according to the valve regulated Signal Regulation valve opening of said humidity controller (102) output;
Step B5: the signal selector of said system control unit (103) is selected a chilled water temperature conditioning signal from the chilled water temperature conditioning signal that said temperature controller (101) and said humidity controller (102) send, and sends to unit cold water temperature controller (104);
Step B6: said unit cold water temperature controller (104) sends to said handpiece Water Chilling Units (5) with the chilled water temperature conditioning signal of receiving, said handpiece Water Chilling Units (5) correspondence is made the action of raising chilled water leaving water temperature or downward modulation chilled water leaving water temperature.
8. the control method of the high-efficiency energy-saving air conditioning system that humiture according to claim 7 is independently controlled is characterized in that: in said step B1,
If the temperature signal T of air is less than the predefined temperature signal T of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said first control valve (4) during greater than a set-point a; When the aperture of said first control valve (4) during greater than preset minimum threshold aperture said temperature controller (101) send the valve control signal that valve opening turns down to said first control valve (4), otherwise send the adjustment signal T that water temperature raises to said signal selector (103)
TU
If the temperature signal T of air is greater than the predefined temperature signal T of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said first control valve (4) during greater than a set-point a; When the aperture of said first control valve (4) during less than preset high threshold aperture said temperature controller (101) send valve opening to said first control valve (4) and transfer big valve control signal, otherwise send the adjustment signal T of water temperature downward modulation to said signal selector (103)
TD
9. the control method of the high-efficiency energy-saving air conditioning system that humiture according to claim 7 is independently controlled is characterized in that: in said step B2, whether the temperature signal T that at first judges air in the said air-conditioned room is greater than the predefined temperature signal T of system
0If then skip moisture signal RH and the predefined moisture signal RH of system with air in the air-conditioned room
0The step that compares does not start the adjusting to said second control valve (3), otherwise gets into following steps:
If the moisture signal RH of air is less than the predefined moisture signal RH of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said second control valve (3) during greater than a given numerical value b; When the aperture of said second control valve (3) during greater than preset minimum threshold aperture said humidity controller (102) send the valve control signal that valve opening turns down to said second control valve (3), otherwise send the adjustment signal T that water temperature raises to said signal selector (103)
HU
If the moisture signal RH of air is greater than the predefined moisture signal RH of system in the said air-conditioned room
0And the absolute value of both differences detects the aperture of said second control valve (3) during greater than a given numerical value b; When the aperture of said second control valve (3) during less than preset high threshold aperture said humidity controller (102) send valve opening to said second control valve (3) and transfer big valve control signal, otherwise send the adjustment signal T of water temperature downward modulation to said signal selector (103)
HD
10. according to Claim 8 or the control method of the high-efficiency energy-saving air conditioning system independently controlled of 9 described humitures, it is characterized in that said step B5 comprises:
Said signal selector (103) judges whether to exist the adjustment signal of a chilled water water temperature downward modulation or rise; When said temperature controller (101) and said humidity controller (102) sent on the chilled water water temperature tonal signal simultaneously, said signal selector (103) sent tonal signal on the chilled water water temperature to said unit cold water temperature controller (104); When in said temperature controller (101) and the said humidity controller (102) any sent under the chilled water water temperature tonal signal, said signal selector (103) sent tonal signal under the chilled water water temperature to said unit cold water temperature controller (104).
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