Background technology
Owing to can utilize the advantage in low-grade energy, economize energy consumption, protection of the environment etc., in recent years, solution type dehumidifying air-conditioning system obtains to be paid close attention to comparatively widely.
Solution dehumidifying air-conditioning system can use low-temperature heat source (60-90oC) to drive, and has saved a large amount of air-conditioning power consumption; Based on the air-conditioning system of thermal source dehumidifying, aobvious heat treated efficiency can be made to improve 30%, thus significantly lower the energy resource consumption of air-treatment; Solution also has very strong accumulation of energy characteristic, the energy storage capability of unit volume solution is 3 times of ice conserve cold, this makes the regulating power of air-conditioning system to load variations significantly increase, use salting liquid as working medium, avoid using CFCs and HCFCs etc. ozone layer to be had to the working medium of destruction, can not environment be damaged; Due to the coil pipe that can produce condensate water need not be used, therefore also would not produce the harmful substances such as mould, and dust in air, bacterium, mould and other nuisance can be removed by the sprinkling of solution, thus be conducive to improving indoor air quality.In a word, solution-type air-conditioning processing mode to raising air-conditioning system runnability, reduce energy resource consumption, improve indoor air quality, Optimizing City energy resource structure is all significant.
But, due to prior art employing is warm and humid mixing structure, and to ordinary heat exchanger, there is certain corrosivity due to salting liquid, ordinary heat exchanger cannot bear the long-time corrosion of salting liquid, and corrosion resistant heat exchanger has common feature, be exactly that heat exchange efficiency reduces, therefore cannot complete energy-conservation and anticorrosion two requirements simultaneously, solution dehumidification unit solution concentration decides the effect on moisture extraction of unit, and regeneration of waste liquor determines solution concentration, existing renovation process utilizes condenser by actified solution and refrigerant heat exchange, utilize solution that the condensation heat in refrigerant is taken away, utilize refrigerant temperature that solution is heated, make the moisture heating evaporation in solution, solution is transported in regeneration module by recycling solution pump, solution after heat exchange is again with return air or new air heat-exchange, return air or new wind is allowed the moisture in solution to be taken away the object reaching regeneration of waste liquor, the fact is that the temperature of return air and new wind is far below actified solution temperature, solution temperature can only be reduced when return air or new wind are to actified solution heat exchange, when actified solution runs into the return air of low temperature or new wind, solution temperature can reduce rapidly, moisture in solution also can condense rapidly, and this process all occurs in regeneration module unit, therefore can not taking away the water effective in actified solution, have impact on the effect of regeneration of waste liquor, directly have influence on the effect on moisture extraction of unit, relative air-supply, new air temperature is higher, wants new wind cool-down dehumidification to reach ventilation state, and compressor will do a large amount of works, consume a large amount of electric energy consumption, and cannot play energy-conservation effect, irreversible loss is large.
Summary of the invention
The technical problems to be solved in the utility model is that existing Fresh air handling units cannot complete energy-conservation and anticorrosion two requirements simultaneously, and its effect on moisture extraction and energy-saving effect are all undesirable.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of heat pump drives pre-cold mould solution humidifying Fresh air handling units, comprise: solution recycle system: comprise damping module and regeneration module, damping module and regeneration module connect and compose inter-stage solution circulation loop; Described damping module is for removing or adding the moisture in new wind, comprise damping spray equipment, damping solution tank and be arranged on damping unhurried current frame between the two, damping solution tank is communicated with damping spray equipment by damping solution line, and the mouth spray of damping spray equipment aims at damping unhurried current frame spray; Described regeneration module is used for removing
solutionin moisture, comprise regeneration spray equipment, actified solution groove and be arranged between the two regeneration unhurried current frame, actified solution groove by actified solution pipeline communication regeneration spray equipment, regeneration spray equipment mouth spray aim at regeneration unhurried current frame spray; Heat pump cycle loop: comprise compressor, condenser, preheat coil, expansion valve, evaporimeter and desuperheating coil; The outlet of described compressor connects the refrigeration working medium import of condenser, the refrigeration working medium outlet of condenser connects the import of preheat coil, the outlet of preheat coil connects the refrigeration working medium import of evaporimeter by expansion valve, the refrigeration working medium outlet of evaporimeter connects the import of desuperheating coil, the import of the outlet connection compressor of desuperheating coil forms whole closed circuit, filling refrigeration working medium in heat pump cycle loop; Aforementioned condenser is arranged on aforesaid actified solution pipeline, the heat-exchange end inlet communication actified solution pipeline of condenser, and connect aforementioned actified solution groove by a solution circulation pump, the heat-exchange end outlet actified solution pipeline of condenser, and be communicated with regeneration spray equipment, form solution heating circuit; Forgoing evaporators is arranged on aforesaid damping solution line, the heat-exchange end inlet communication damping solution line of evaporimeter, and connect aforementioned damping solution tank by a solution circulation pump, the heat-exchange end outlet damping solution line of evaporimeter, and be communicated with damping spray equipment, form solution cooling circuit.
Desuperheating coil and damping module, by preheat coil and regeneration module being arranged respectively, also arrange, reach the effect of warm and humid sub-control by the utility model respectively.Illustrate, when summer needs refrigeration, heat pump refrigerant carries out caloic exchange through the high temperature refrigerant of compressor compresses through the salting liquid of condenser and solution system, by the salting liquid of heat exchange through actified solution transport pump to regeneration spray equipment, be sprayed on regeneration unhurried current frame uniformly by regeneration spray equipment, unhurried current shelf squirts by the liquid of spray, when return air is blown over, take away moisture unnecessary on unhurried current shelf, reach the effect of concentrated liquid, the effect that the liquid sprayed slowly is flowed down is played in the setting of regeneration unhurried current frame, the return air moisture taken away in solution is allowed to reach to the object of regeneration of waste liquor, refrigerant with solution heat exchange continues the condensation temperature that condensation heat release reduces heat pump in Cemented filling to return air preheat coil, utilize the cold of return air to the abundant condensation cooling of refrigerant, cold in total heat recovery return air, reduce condensation temperature, in this process, condensation temperature often reduces by 1 DEG C, COP improves 2 ~ 3%, utilize the temperature of refrigerant to return air preheating, moisture in actified solution is taken away through regeneration module by the return air after preheating, thus reach the energy-saving and cost-reducing object of the warm and humid sub-control of air draft, refrigerant after abundant condensation cooling enters evaporimeter people having the same aspiration and interest wet salt solution through expansion valve throttling and carries out heat exchange, evaporative cooling is carried out to damping solution, damping solution after cooling is transported to damping spray equipment through damping solution pump, be sprayed on damping unhurried current frame uniformly, the function of damping unhurried current frame is the same with the function of regeneration unhurried current frame, it is all the effect in order to play delays liquid flowing, liquid on damping unhurried current frame and new wind carry out heat exchange, the salting liquid of low temperature can remove the moisture in air, reach the object to air dewetting, refrigerant after evaporation and heat-exchange proceeds evaporation endothermic in the pre-cooling of fresh air coil pipe of Cemented filling, utilize evaporating temperature pre-cooling of fresh air being improved to heat pump, new wind after precooling cooling is through damping module and the heat exchange of damping solution, utilize the damping solution of low temperature that the moisture removing in wind new after precooling is reached air-supply requirement and deliver to indoor, thus reach the object of warm and humid sub-control of blowing, evaporation cold is utilized to reduce new air temperature, reach to the object of pre-cooling of fresh air cooling to control new air temperature, utilize low temperature damping solution to control new rheumatism degree, utilize condensation temperature to regain air-cooled amount back and forth to return air preheating and improve return air temperature, utilize refrigerant temperature heat exchange actified solution that the moisture in solution is evaporated, utilize the return air of preheating to be taken away by the moisture in solution and get rid of outdoor, reach the regenerative process to solution, thus realize the warm and humid sub-control process of whole system, in this process, evaporating temperature often improves 1 DEG C, and unit COP can improve 3 ~ 5%.
As further improvement of the utility model scheme, described precooling tray bottom arranges solidifying water pond, arranges solidifying water drainpipe bottom solidifying water pond.In actual motion, desuperheating coil can not produce condensed water in theory, but under extreme weather and extreme operating condition, produces condensed water in order to preventing, so preset solidifying water pond.
The utility model has the advantages that: by the structure of warm and humid sub-control, both employ salting liquid and carry out damping, reach good damping effect, solve again the problem of salting liquid corrosion heat exchanger, use middle irreversible loss little, can heat pump system efficiency be increased substantially, reach the effect that warm and humid sub-control is energy-saving and cost-reducing, the occasion needing to provide dry fresh air can be widely used in.
Specific embodiments
Below in conjunction with accompanying drawing, the utility model is described further.
As Figure 1-4, the utility model comprises solution recycle system and heat pump cycle loop, and solution recycle system comprises damping module and regeneration module 16, and damping module and regeneration module 16 connect and compose inter-stage solution circulation loop;
Described damping module is for removing or adding the moisture in new wind, comprise damping spray equipment 20, damping solution tank 17 and be arranged on damping unhurried current frame 21 between the two, damping solution tank 17 is communicated with damping spray equipment 20 by damping solution line 19, the mouth spray of damping spray equipment 20 aims at spray on damping unhurried current frame 21, forms damping region;
Described regeneration module 16 is for removing
solutionin moisture, comprise regeneration spray equipment 15, actified solution groove
12with the regeneration unhurried current frame 16 be arranged between the two, actified solution groove
12regeneration spray equipment 15 is communicated with by actified solution pipeline 14, the mouth spray of regeneration spray equipment 15 is aimed at regeneration unhurried current frame 16 and is sprayed, form regeneration zone, described regeneration module 16 is also provided with a moisturizing valve 24, preset moisturizing valve 24, can be used for actified solution moisturizing to regulate actified solution concentration.
Heat pump cycle loop comprises
compressor 1, condenser 3, preheat coil 5, expansion valve 6, evaporimeter 8 and desuperheating coil 10;
The outlet of described compressor 1 connects the refrigeration working medium import of condenser 3, the refrigeration working medium outlet of condenser 3 connects the import of preheat coil 5, the outlet of preheat coil 5 connects the refrigeration working medium import of evaporimeter 8 by expansion valve 6, expansion valve 6 is arranged in evaporimeter air inlet pipe 7, the refrigeration working medium outlet of evaporimeter 8 connects the import of desuperheating coil 10, the outlet of desuperheating coil 10 connects the compressor suction duct 11 of the import department of compressor 1, form whole closed circuit, filling refrigeration working medium in heat pump cycle loop;
Aforementioned condenser 3 is arranged on aforesaid actified solution pipeline 14, the heat-exchange end inlet communication actified solution pipeline 14 of condenser 3, and connects aforementioned actified solution groove by actified solution circulating pump 13
12, the heat-exchange end outlet actified solution pipeline 14 of condenser 3, and be communicated with regeneration spray equipment 15, form solution heating circuit;
Forgoing evaporators 8 is arranged on aforesaid damping solution line 19, the heat-exchange end inlet communication damping solution line 19 of evaporimeter 8, and connect aforementioned damping solution tank 17 by damping solution circulation pump 18, the heat-exchange end outlet damping solution line 19 of evaporimeter 8, and be communicated with damping spray equipment 20, form solution cooling circuit.
Mode of operation of the present utility model divides four kinds, respectively: dehumidifying in summer, winter humidification, the regeneration of new wind and the online dehumidifying of twin-stage module.
embodiment 1(removes wet cooling condition summer):
As shown in Fig. 1, summer is when dehumidifying, by desuperheating coil 10, damping module constitutes new wind passage, after new wind enters unit, first with desuperheating coil 10 heat exchange, pre-cooling of fresh air is lowered the temperature, new wind after precooling carries out caloic exchange by damping module and solution again, damping module carries out dehumidifying and cooling to the new wind after precooling, reach air-supply requirement and deliver to indoor, the low-temperature receiver of desuperheating coil 10 comes from compressor 1, refrigerant after evaporimeter 8 heat exchange through Cemented filling to series connection desuperheating coil 10 in, return compressor 1 again after to pre-cooling of fresh air and enter next compression cycle completing, the method can complete simultaneously lowers the temperature and raising evaporator refrigerant temperature to the precooling of new wind, refrigerant after expansion enters evaporimeter 8 and first carries out caloic exchange with dehumidification solution, first with the heat exchange of damping solution at the refrigerant of low temperature, and then enter desuperheating coil 10, the refrigerant of low temperature can continue to carry out precooling to new wind and improve own temperature, the damping solution of low temperature through damping transport pump to damping spray equipment 20, dehumidifying and cooling can be continued to the new wind after the precooling of damping module, accomplish that humiture separately controls.Described desuperheating coil divides into condensate drain pan 22, by condensate pipe 23, condensed water is discharged, in actual motion, desuperheating coil 10 can not produce condensed water in theory, for preventing from producing condensed water under extreme weather and extreme operating condition so preset condensate drain pan 22.
In addition, air exhaust passage is constituted by regeneration module, regeneration spray equipment 15, preheat coil 5, indoor return air enters air exhaust passage elder generation and preheat coil 5 heat exchange, through regeneration module 16, the moisture of solution is taken away by the return air heated the object reaching regeneration of waste liquor, the high temperature refrigerant compressed through compressor 1 is transported to condenser 3 in and actified solution carries out heat exchange, be transported to regeneration spray equipment 15 by pipeline by actified solution pump 13 by the actified solution heated, be sprayed at uniformly by regeneration spray equipment 15
on regeneration unhurried current frame 16by the return air after preheating, the moisture in solution is taken away the object reaching regeneration of waste liquor, refrigerant in condenser 3 after heat exchange through Cemented filling in preheat coil 5, heat to the return air through preheat coil 5, utilize return air to make the abundant condensation of refrigerant to refrigerant cooling simultaneously, reduced the condensation temperature of heat pump by the cold reclaiming return air, return air preheating can improve the ability of regeneration of waste liquor; By implementing the warm and humid sub-control of regeneration and damping, regeneration of waste liquor ability and the cool-down dehumidification ability of whole unit can be improved, pre-cooling of fresh air can improve the evaporating temperature of heat pump, return air preheating can reduce the condensation temperature of heat pump, the refrigerating capacity of heat pump is increased substantially, the Energy Efficiency Ratio of whole the unit that dehumidifies is increased substantially, thus reaches energy-saving and cost-reducing object.
embodiment 2(adds wet cooling condition winter):
As shown in Fig. 2, under winter humidification state, by preheat coil 5, damping module 21, damping spray equipment 20 constitutes new wind passage, the new wind of winter low temperature drying enters new wind passage first through preheat coil 5 preheating, new wind after preheating carries out damping through damping module again, reach after air-supply requires and deliver to indoor, the high temperature refrigerant compressed through compressor 1 first carries out heat exchange by Cemented filling to condenser 3 with damping solution, damping solution heating after refrigerant via Cemented filling in preheat coil 5, heat exchange is carried out to fresh air preheating with the new wind through preheat coil 5, refrigerant after the new wind of preheating enters evaporimeter 8 through expansion valve, damping spray equipment 20 is transported to by damping solution line 19 by damping solution circulation pump 18 by the damping solution heated, through damping spray equipment 20 evenly spray solution, carry out warming and humidifying to the new wind of preheating simultaneously, by new wind the temperature in damping solution, moisture takes away the object reaching warming and humidifying,
In addition, by desuperheating coil 10, regeneration of waste liquor module, the air exhaust passage that regeneration spray equipment 15 forms, cross valve dress changed recovery passage function and changed winter, the refrigerant of low temperature enters evaporimeter 8 and actified solution heat exchange, low temperature refrigerant after heat exchange through Cemented filling in desuperheating coil 10, return air is when desuperheating coil 10, refrigerant fully absorbs the evaporating temperature of the heat raising refrigerant of return air, abundant recovery return air heat, solution after heat exchange is transported to regeneration module by pipeline by solution pump, sprayed uniformly by regeneration spray equipment 15, with the return air heat exchange after precooling, moisture in return air being reclaimed cold gets rid of outdoor.
the new wind regeneration regime of embodiment 3():
As shown in Fig. 3, the air exhaust passage be made up of regeneration of waste liquor module, regeneration spray equipment 15, preheat coil 5 utilizes new wind to regeneration of waste liquor, first contact with preheat coil 5 after new wind enters air exhaust passage, new wind after the raw temperature of preheating contacts with regeneration of waste liquor module again, reached the object of regeneration of waste liquor by the new wind of the preheating moisture taken away in actified solution, the new wind of preheating can reach the effect reducing condensation temperature to the abundant condensation of refrigerant simultaneously.
embodiment 4(twin-stage module is online except wet cooling condition):
As shown in Fig. 4, needing, effect of dehumidifying humidification is larger, and a table apparatus is when cannot satisfy the demands, can by two cover the utility model device classification work together, for the process of dehumidifying, first new wind lower the temperature through two desuperheating coils 10, and then by the damping of two damping modules, and first return air carry out preheating through two preheat coils 5, and then regenerate through two regeneration modules 16, although process is the same with independent one, but because it has two cover heat pumps, therefore its energy utilization rate is higher than the Fresh air handling units that an independent table apparatus uses.