CN102224390A

CN102224390A - Air conditioning

Info

Publication number: CN102224390A
Application number: CN2009801468552A
Authority: CN
Inventors: X.赵; S.B.里法特; J.李; C.詹; Z.段
Original assignee: University of Nottingham
Current assignee: University of Nottingham
Priority date: 2008-09-24
Filing date: 2009-09-23
Publication date: 2011-10-19
Anticipated expiration: 2029-09-23
Also published as: GB0817468D0; CN102224390B; WO2010034994A2; GB0905178D0; WO2010034994A3

Abstract

Air conditioning in certain geographical locations would be advantageous. Unfortunately traditional air conditioning depends upon refrigeration systems for air cooling. To avoid the fuel costs and the complexity of refrigeration systems a dew point heat exchanger can be utilised. The heat exchanger comprises a number of thermally conductive layers to define dry paths and wet paths adjacent to each other. Inlet air flow into a dry path is cooled by heat exchange with adjacent wet paths through the thermally conductive layer. A proportion of the inlet air flow is diverted to the wet path such that evaporation through the latent heat of evaporation causes cooling of the air flow whilst the remainder of the inlet air flow is presented to a manifold for utilisation with regard to air conditioning.; It will be understood that the relative humidity between the inlet air flow and the wet path is important. In such circumstances utilisation of a dehumidifier either independently or as part of an air conditioning arrangement will facilitate operation.

Description

Air conditioning

Technical field

The present invention relates to air conditioning, relate in particular to the air and the temperature controlled air conditioning that utilizes dew point heat exchange and/or humidity regulation that are used in the building structure.

Background technology

Should be appreciated that work or the leisure during simple environment of living be contemplated to be happy comfortable environment.Usually, produce such environment by air conditioning, the temperature of surrounding air in the building structure is not only regulated in this air conditioning, also changes the temperature of air, so that more desirable.Utilize kind of refrigeration cycle to be used for air handling system traditionally.This refrigeration system is not desirable with regard to cost, complexity and ambient influnence.

The a large amount of electric energy that mainly produce of traditional mechanical compression refrigeration circulating air regulating system consumption by fossil fuel.Therefore, the air conditioning of this pattern both can not be lasting, also not environmental protection.Evaporative cooling utilizes the latent heat (being present in a kind of natural energy in the atmosphere) of water evaporation to carry out the air conditioning of building, therefore is that a kind of existing the potential of system based on refrigeration substitutes.But evaporative cooling has run into several technical barriers that respectively hinder its extensive use.Directly evaporative cooling has increased the humidity of space air, causes thermal comfort beastly.The indirect evaporation cooling has reduced air themperature, avoid increasing air humidity, but it is restricted to air fed temperature than high several degrees centigrade of the wet bulb of outdoor air, and this is for too high the air conditioning of carrying out building under Britain and most of climate in china condition.

The wet bulb restriction has been broken in dew point (evaporation) heat exchange, allows air supply is cooled to the level that is lower than the wet bulb level and surpasses the outdoor air dew point.

This dew point evaporation process provides and has been used for the short-cut method of air conditioning, but the above-mentioned traditional heat exchangers of this process that is used for is in its efficient and operating characteristics and inappropriate.Be used for cancelling dew point the heat exchanger two ends humidity difference make things convenient for device to be useful on to raise the efficiency.But, must be for a long time and the external energy input is reduced to acceptable level realize dehumidifying commercial.

Traditional AC system design of heat exchanger does not have the efficient of friendship level usually, does not perhaps have at least as the so high-caliber efficient of expectation.Traditional dehumidifier using gases, electricity or hydrogen fuel are even if but when using wasted energy or regenerative resource, level of efficiency is enough not high or undesirable for substantial long term object.

Summary of the invention

The method according to this invention, a kind of heat exchanger that is used for the dew point heat exchange is provided, described heat exchanger comprises a plurality of heat-conducting layers, described a plurality of heat-conducting layer has the alternating layer of the qualification of being separated into and drain passage and wet channel, described dry passage extends to outlet from inlet, and has a side opening to adjacent wet channel, described wet channel has perforate that is used for wet gas current and the outlet that is used for heat exchanger, thereby wet gas current is evaporated at least, and has heat exchange by the heat-conducting layer shared with leading dry passage mutually in using.

Usually, described heat exchanger be used to drive a certain proportion of circulation of air and cross the device of described side opening and link to each other.Usually, described side opening and described outlet have air door, with change be provided by described outlet and by described side opening to the relative scale between the air of the described wet channel stream.Possibly, by the actuator that links to each other with described air door with depend on by the temperature of described heat exchanger and/or the sensor of air velocity and regulate described air door.

Possibly, described outlet is connected to and is used for the collecting manifold that relevant surrounding air is regulated.

Usually, drive by free convection or stimulate air-flow by the described described dry passage that enters the mouth via the orientation of described heat exchanger and structure.Possibly, the device that is used to drive described air-flow comprises fan.Usually, described heat exchanger can re-construct and become to depend on operation and need change air-flow.Possibly, described air-flow is for per hour being approximately 500 cubic metres.

Possibly, the width of the width of described dry passage and described wet channel is basic identical.Possibly, described width is 2 to 10 mm, is preferably 6 mm.

Possibly, the same length of described dry passage and described wet channel.Usually, described length is 0.5 to 2 m, is preferably 1.2 m.

Usually, described heat-conducting layer is aluminium or copper or other proper metal or material.Possibly, described heat-conducting layer is at least one side waterproof.

Possibly, at least some described passages comprise the hydrophily dispersion, for example cellulose fibre or sintering metal.

Possibly, described heat-conducting layer is supported on the fold reinforcement.

Possibly, regulate the ratio of the air-flow that passes through described inlet and described outlet according to the operation needs.Usually, described ratio is 1:1.

According to a second aspect of the invention, a kind of dehumidifier that air conditioning is arranged that is used for is provided, described layout comprises the regeneration passage that is located at the drier in the sidewind passage and is located at opposite side, described gas channel is arranged to the air-flow dehumidifying in using, and described regeneration passage is by adding the heat abstraction moisture described drier of regenerating, and described regeneration passage comprises microwave source and is used for described microwave is concentrated on the described drier device with the described drier of local heat.

Usually, described drier is the form of wheel.

Usually, the described device that is used for concentrated described microwave comprises waveguide.Usually, described waveguide is formed by metal.

Usually, described drier is formed by non-polar material, to represent water wetted material.

Usually, described regeneration passage comprises the device that is used for forced air flow.Usually, the described device that is used for forced air flow comprises fan.

Still according to aspects of the present invention be air system or the cooling system that comprises that above-mentioned heat exchanger and/or dehumidifier are arranged.

Usually, described dehumidifier is arranged and is linked to each other with described inlet.Usually, water tank is set, so that moisture flows along described wet channel.

Description of drawings

With reference now to accompanying drawing,, by the embodiment of case description each side of the present invention, wherein:

Fig. 1 is the air conditioning of the aspect according to the present invention or the schematic diagram that cooling is arranged;

Fig. 2 is the cross sectional representation of the heat exchanger of aspect according to the present invention;

Fig. 3 is the schematic diagram from the X of direction shown in Fig. 2;

Fig. 4 is the schematic sectional view along the A-A of plane shown in Fig. 2;

Fig. 5 is the schematic sectional view along the B-B of plane shown in Fig. 2;

Fig. 6 provides according to the present invention in the heat exchanger of aspect the schematic diagram of sealing arrangement between wet channel and the dry passage;

Fig. 7 provides the schematic diagram of the operation of the heat exchanger of aspect according to the present invention;

Fig. 8 provides the schematic diagram according to the dehumidifier of second aspect present invention;

Fig. 9 comprises the heat exchanger of the aspect according to the present invention and according to the schematic diagram of the central heating system of the dehumidifier of second aspect present invention;

Figure 10 is the schematic sectional view of the dehumidifier of aspect according to the present invention;

Figure 11 is the sectional view of dehumidifier shown in Figure 10 in the AA-AA of plane;

Figure 12 is the perspective schematic view of the part of dew point heat exchanger;

Figure 13 is the perspective schematic view of another part of dew point heat exchanger shown in Figure 12; And

Figure 14 is the curve map of dry-bulb temperature with respect to absolute humidity.

The specific embodiment

As mentioned above, the natural evaporation process that depends on relevant water is arranged in the dew point air conditioning.In this case, the energy of evaporation obtains from air, so that the cooling air, but this process can increase the humidity of discharging air, therefore causes the occupant of sealing architectural environment can't accept this environment.Yet, under correct geographical position and weather condition, if arrange so applicable dew point air conditioning for air handling system provides suitable heat exchanger and/or dehumidifier individually or in combination.

Fig. 1 provides according to the dew point air conditioning of first aspect present invention and has arranged 17 schematic diagram.Like this, arrange that 17 comprise the heat exchanger 5 that is provided with distribution reservoir 3, distribution reservoir 3 supplies water for water collector 9 by sparge pipe 4.Water cycles through the pipeline 6 between water collector 9 and the distribution reservoir 3.In this case, air stream is energized by heat exchanger 5, by supply cross flow fan 2, and controlled by air door 1.The air of the outlet by heat exchanger 5 is cooled, and is as shown in arrow 18.

For coolant outlet air 18, initial surrounding air 19 presents by air inlet grill 10.Entering part of air passes heat exchanger 5 and is cooled and is rendered as outlet air 18, and the another part in the housing 12 become and include moisture from water tank 3, to pass the wet channel that pass through heat exchanger 5 adjacent, wherein want cooled air to pass dry passage with dry passage.The water level of the water in the water collector 9 keeps by water pump and liquid-level switch 8.In this case, describe as the back, thin thermal conductive material layer has strengthened the heat exchange and the cooling of final outlet air 18 between wet channel and the dry passage.Having passed the highly humid air of heat exchanger 5 discharges by exhaust fan 7.In order to keep operational efficiency and to avoid potential problem, overflow pipe 11 is set, bleed valve 14 and excretory duct 15 if necessary are set simultaneously, discharge liquid with needs from water collector 9 according to runnability.Should be appreciated that the liquid levels in the distribution reservoir 3 can reach specific degrees, determine potential evaporation, and therefore determine the dew point cooling in the heat exchanger 5 of aspect according to the present invention.Distribution reservoir 3 is used as the head of water collector 9, and has water distribution valve 13 and sparge pipe 16 to external water source.This external water source is generally running water.

According to a first aspect of the invention, heat exchanger 5 is designed to realize the high efficiency of relevant dew point heat exchange.Provide the further details of relevant this structure below with reference to Fig. 1-6.Usually, heat exchanger comprises that thin heat-conducting plate or layer limit dry passage and wet channel.Described layer is formed by aluminium or Copper Foil usually, and supported to keep dried wet channel.Described wet channel comprises the hydrophily dispersion that is generally the cellulose fibre form.Whole heat exchanger bonds together by hot fat, and so that exercisable heat exchanger to be provided, in this heat exchanger, the air that enters is worn along dry passage, and is cooled by the latent heat of moisture evaporation in the wet channel.The work of hydrophily dispersion is good, for simple wet gas current provides resistance.In this case, the evaporation latent heat that obtains from dry passage is used to evaporate the moisture in the wet channel, and the heat exchange by being provided by heat-conducting layer like this, has realized the enhancing cooling of dry passage hollow air-flow.The thermal conductivity that should be appreciated that the heat-conducting layer of aluminium foil form is about 220 watts of every meter Kelvins, and the thermal conductivity of cellulose fibre is about 50 watts of every meter Kelvins.

Usually, as shown in Figure 1, be provided with and stride hole (cross aperture) and side opening 20, thereby guided to outlet 18 or wet channel pro rata along the air that enters that dry passage provides, be transferred to carry or to have, to discharge by exhaust fan 7 from the cellulosic evaporate moisture in the wet channel.In this case, the heat exchanger 5 of aspect is compared with depending on the simple existing layout that exchanges technology according to the present invention, has improved cooling effectiveness.

Should be appreciated that by using appropriate air door,, can realize the adjusting of flowing relatively, to determine the level of cooling effectiveness by heat exchanger 5 particularly at outlet 1 and exhaust fan 7 places.

Fig. 2 provides the schematic sectional view of heat exchanger shown in Fig. 1.As can be seen, heat exchanger 5 comprises a plurality of thermal conductive material layers 21.These layers are formed by thin aluminum sheet as mentioned above usually, with good thermal conductivity between dried/wet channel of guaranteeing to form between the layer 21.As mentioned above, these passages dry passage that replaces and wet channel by heat exchanger 5 normally between the arrival end 22 and the port of export 23.According to aspects of the present invention, as mentioned above, thereby in order to promote to improve the efficient that cooling improves heat exchanger 5, carry out heat exchange along the air that enters of dry passage process with air-flow along wet channel, wherein evaporation latent heat is used to cool off the air-flow in the dry passage.Wet channel contains the hydrophily dispersion that form is a cellulose fibre, makes to enter wet channel along the part of air of dry passage process by side opening.Moisture evaporates from cellulose fibre, and owing to utilize the evaporation latent heat of the heat that obtains from the air of advancing along dry passage, provides cooling.More the air of high humility is transferred by the air-flow of wet channel, to discharge by exhaust fan as previously mentioned.Obviously, the part of air of advancing along dry passage also must be as the delivery air of air conditioning facility.Under this situation as shown in Figure 2, provide collecting manifold 24 to collect the cooling air of a part, so that export according to the needs of air conditioning performance by dry passage.

Fig. 3 provides heat exchanger 5 shown in Fig. 2 along the view of direction X.Therefore, dry passage 31 is normally opened, and wet channel 32 contains hydrophily dispersion 33 and fold formula or folding reinforcement, to keep the interval of passage 32.As previously mentioned, in this case, the air that enters is advanced along dry passage 31, and a part discharges by outlet, remaining air is then advanced along dry passage 33, with the evaporate moisture in the transfer passage 33, be used for by the dew point on 31 the inlet air flow of dry passage and the cooling effect of evaporation latent heat.

Fig. 4 provides the view of plane A-A shown in Fig. 2.As can be seen,

passage

31,32 still is provided with the hydrophily dispersion of cellulose fibre form in wet channel 32, and dry passage 31 does not comprise that this hydrophily dispersion still has telescopic reinforcement (as shown in Figure 4), to keep the interval of heat-conducting layer 41, limits heat exchanger 5.The hydrophily dispersion and the structure of strengthening also allow air to flow along

passage

31,32, to obtain the heat exchange performance of the aspect running according to the present invention.

Fig. 5 provides the schematic sectional view of heat exchanger 5 main bodys dorsad along plane B-B.Shown under this situation, wet channel 32 and dry passage 31 have side opening 51 between them.Side opening 51 flows to towards flow to terminal of dry passage with in the wet channel 32 begins the location, place.In this case, the part of air of advancing along dry passage is gone to wet channel, enters collecting manifold 23(Fig. 2 and remainder passes the outlet of dry passage) to be used in the air conditioning effect.This part air of advancing along wet channel can be pulled away, and therefore removed from wet channel and in wet channel evaporation realize the moisture of cooling effect with the air of advancing along dry passage.In this case, realized the cooling effectiveness that strengthens.

Should be understood that, must be sealed towards the wet channel of the dry passage port of export, shown in dry passage a certain proportion of air of being configured to pass through itself along its length offer manifold 24 and also offer the wet channel of at least one side of dry passage either side or dry passage.Under this situation shown in Fig. 6, although passage 32 seals 61 all having towards outlet 62 of passage 32 everywhere usually, each dry passage 31 has sealing 63 along the side between the arrival end 64 and the port of export 65, to allow air to flow to the port of export 65 from arrival end 64, wherein a certain proportion of air is brought to manifold and is used for the air conditioning purpose, a certain proportion of air is taken to wet channel 32 as mentioned above, is used for promoting the cooling along the air-flow subsequently of dry passage.

Usually, according to the present invention the heat-conducting layer of aspect by suitable heat-conducting glue or thermal grease conduction and if necessary tighten together by sealant.The thermoconductive material board that forms these layers has the thickness of 1 mm usually, and is about 0.25 mm as the telescopic material of reinforcement and air guide device.

Fig. 7 provides according to the present invention the explanatory view of air stream in the heat exchanger 5 of aspect.Use identical Reference numeral to be convenient to understand in conjunction with front view.Like this, dry passage 31 has along what it was advanced and enters air 71, and wet channel 32 is by the side opening between the

passage

31,32 or stride the hole and receive a part 72 that enters air 71.The remainder that enters air that is suitably cooled off is advanced as outlet air 73 and is entered collecting manifold, to be used in the air conditioning.Usually, the end of wet channel 32 is closed part 74 sealing, is that the moisture 75 of water can borrow it enter the mechanism of wet channel 32 but have form.As mentioned above, wet channel 32 comprises the hydrophily dispersion of cellulose fibre form, with the inhibition of doing moisture, and therefore forces and need obtain bigger evaporation latent heat from inlet air flow 71 and be used for cooling effect.In this case, the air 76 of discharge is discharged wet channel 32, in order to be distributed to the building outside, has the air handling system of the heat exchanger 5 aspect comprising according to the present invention in this building.

Should be understood that the cooling level in the outlet air 73 depends on the operation needs.By the speed that adjusting enters air stream 71, the moisture level in the wet channel 32, the size and the thickness of the ratio of air-

flow

72,73 and

flow channel

31,32 and thermal conductive material layer 77 can limit the heat exchanger that is suitable for moving with understanding in air handling system.Usually, the air-flow on heat exchanger 5 distributes and will be arranged to the cooling effectiveness that obtains to expect.For example, for 20 m ²Room and 30 watts/m ²Cooling load, can accept about 500 cubic metres of flow rates hourly.The discharge flow rate is substantially the same.In this case, the ratio that enters between air 71 and the discharge air 76 is generally 1:1.

Usually, enter air stream 71 and use fan to be forced through, and, discharge air 76 and be sucked, to promote to flow through heat exchanger 5 from wet channel 32 similarly by sucking or swabbing effect.And, can regulate by the speed that changes fan in the speed of this forced draft that enters air 71 positions and discharge air 76 positions, this fan is provided at the measure that these positions drive air-flows.

Usually, define the flow channel of aspect according to the present invention as shown for the operation purpose.In this case, the passage that limits dry passage 31 and wet channel 32 can have the width of 6 mm, but usually in the scope of 2-10 mm, the length of

passage

31,32 also is identical basically, and depend on need be in 0.5 m to 2 meter scope.Should be appreciated that particularly that with regard to wet channel enter the operational efficiency aspect of air 71 from cooling, the length of passage should make the moisture that is carried condensation can not take place there, with the coolant outlet air 73 guaranteeing to provide sufficient by heat exchanger 5.

Usually, wet channel 32 and dry passage 31 have essentially identical size.But when needed,

passage

31,32 can have different shapes, rather than has identical width along its length, can be tapered as required.The size of side opening determined outlet air 73 and the air 78 that provides along wet channel 32 between relative scale, the relative size between unlimited outlet that it can be by discharging outlet air 73 and the side opening size that leakage air enters wet channel 32 is set simply.Usually, all side openings all are identical size, but it is by the variable-widthization of the heat exchanger of aspect formation according to the present invention.In this case, outer hole can have the size bigger than endoporus, and therefore can return bigger air velocity to carry the moisture that evaporates in the wet channel, and vice versa.

In order to promote heat exchange, the heat-conducting layer that uses in usually aspect the present invention is thinner.In this case, these layers can have the thickness of the self-supporting of being not enough to, and therefore need be supported on the above-mentioned telescopic arrangement.It is also understood that the hydrophily dispersion of cellulose fibre form or the maintenance that sintering structure itself can be convenient to the wet channel size.

Since the discharge that is used for air conditioning with return the process that proportioning air between the wet channel flows and be generally passive process, that is to say, utilize a hole as the side opening between the passage, so be to be understood that, by the air door that the outlet with heat exchanger or air handling system links to each other, can regulate the ratio of the air stream that returns along wet channel.This air door shown in Fig. 1 can link to each other with suitable actuator, and this actuator is regulated the open aperture size according to flow velocity and temperature then, thereby regulates the potential flow velocity of heat exchanger exit.Weakening exit velocity can cause more air to be returned along the wet channel of the aspect according to the present invention usually.

As mentioned above, in being generally comprised within air handling system and arranging according to the heat exchanger of first aspect present invention, to obtain the air conditioning performance in building structure (for example, office, house or public place).Provide the conventional method of as directed air conditioning higher usually aspect fuel cost by refrigeration system, therefore can't be lasting.In addition, under the situation that environment temperature and damp condition allow being difficult to obtain reliable source of power, it is useful that above-mentioned dew point heat exchanger is provided.This heat exchanger can be positioned at gas channel, and as mentioned above, depends on the dew point/latent heat of evaporation process.Should be understood that with wetter environment facies ratio, the dew point air handling system is more suitable in more xeothermic environment.The dew point system depends on evaporation, and therefore, evaporation is advanced wetter environment and advanced more dried environment difficulty than evaporation.But the dew point air handling system can combine with suitable dehumidifier so that heat exchange and dew point air handling system are suitable for wet environment more.

Traditional dehumidifying is carried out as shown in Figure 8, utilizes the drier that is generally wheel 81 forms, and it is arranged to rotate the dehumidifying flow channel by being limited by arrow 82, its by wheel 81 so that dry air 83 to be provided.Shown air flow passage is obtained wet air 82 usually, and impels it to pass through fan 84 and drier wheel to produce dry air 83.Drier wheel 81 makes this take turns the part difference that is exposed to flow channel 82 to 83 by motor 85 or the rotation of other transmission mechanism, and by means of wheel 81 by transmission mechanism 85 around the rotation of an axis and little by little around moving.In this case, between air-flow 82 and dry air 83, provide dehumidification process although take turns a part of 81, another part at heater 86 be used for driving or aspirate reaction or regeneration air stream 87 by taking turns the regeneration passage between 81 the device.In this case, the regeneration passage 87 of removing moistures by heater 86 trailing wheels 81 causes taking turns 81 and can remove moistures from air-flow 82 when rotating once more, to produce dry air 83.

Several porous materials that comprise silica gel, activated alumina, molecular sieve or its mixture are usually as the drier of removing moisture from air.Drier is integrated into the wheel that keeps rotation during operation.This part working face of taking turns is exposed to the air-flow that enters, as dehumidifier; Its part that is exposed to thermal current then is considered to extract moisture out from drier, to realize the regeneration of drier; All the other then by making cold air experience cooling procedure through this surface, absorb moisture to allow to reusing drier.The schematic diagram of dryer system has been shown among Fig. 8.

Use traditional renovation process, handle air and need use the heater that drives by gas, electricity, oil or wasted energy/regenerative resource to heat, and use fan/pipe-line system to be attracted and take turns by described.This process is included in the poor efficiency energy transmission that takes place in the corresponding heat transmission equipment, and because the remarkable energy dissipation that the accident of drier heats and its follow-up cooling causes.Therefore, this system is heavy, cost height and highly energy-consuming.Traditional response because low air thermal mass has also slowed down of surviving again, this can cause regenerating the essential very long processing time of reason.

As mentioned above, it is inconvenient using the conventional regeneration of drier wheel, and may come to provide enough areas to the regeneration that dehumidifies after reaching by bigger wheel.

Microwave is a kind of electromagnetic energy, and polar molecule that exists in itself and the target object and free ion interact.This can cause molecular friction, and then produces heat in the inside that exposes object, causes the evaporation (if having the liquid of suitable evaporating moisture, for example water) from object of temperature rising or moisture.This process is called three-dimensional heating, is used in usually in the cooking, oven dry, the medical treatment, for example cancer patient's cytoclasis.

Depend on the concrete application of using microwave, the frequency of microwave changes to 2450 MHz from 915 MHz.Most of micro-wave ovens are with 4.8 " 2450 MHz frequencies operations of wavelength are in air.But small-sized household microwave oven can operate in 13 " 915 MHz of wavelength.The water, the fat and sugar that normally comprise a large amount of polar molecules at the target object of the microwave of this frequency range.Metal has the trend of microwave reflection, so can be used as conduit, is called waveguide, or keep will raying in microwave field container of material.Some non-polar compound (for example, plastics, glass, pottery and porous dry device) are transparent for microwave.This allows these materials to avoid heating in microwave radiation following time.For saturated drier, microwave energy becomes selective, only concentrates on the moisture in the drier, has therefore saved heating and the required energy of follow-up cool drying modulator material.This specific characteristic makes microwave system more attractive than the legacy system of current use in the dehumidifying demand side.

In microwave system, make the moisture of absorption be changed into steam by absorbing the heat that produces that interacts between polar molecule and the electromagnetic wave, by forced draft the drier bed is left in its guiding then.Because it is at once that direct contact the between microwave and the molecule, heat produce, and is evenly distributed on the whole drier bed, causes thermal response more rapidly, and improve energy conversion efficiency.Estimate microwave system aspect power conversion than legacy system effective 50%.

Under the superincumbent situation, should be understood that, the use of microwave source make the dehumidifier be used for the air conditioning purpose operation more fast, effectively, and reduced cost of energy, described microwave source concentrates on rightly by waveguide on the drier wheel part.In this case, the utilization of relevant dehumidifier obtains more convenience, and thinking in the use according to the heat exchanger of first aspect present invention provides bigger moist gradient.But, also can use with more traditional heat exchangers according to the dehumidifier of second aspect present invention.In fact, water is by being formed by microwave excited polar molecule, and material (being drier) is generally nonpolar and therefore can be by microwave penetration.In this case, microwave energy concentrates on the hydrone selectively, thereby obtains more effectively regeneration.In this case, although may need the measure of covering to protect the individuality that itself is made of hydrone basically not to be subjected to the influence of microwave source, the energy that needs still still less.Obviously, the dehumidifying flow channel of microwave source from dehumidifier need be shielded, otherwise can reduce the effect of this dehumidifying.Therefore, between gas channel and regeneration passage, need simple shielding usually.

Under the superincumbent situation, except conventional heater 86 is substituted and utilizes the shielding of certain form or waveguide to come the concentrating microwaves energy and microwave energy is not produced the environmental problem (for example reduce the initial main effect on moisture extraction of air-flow 86-83 and may adverse effect be arranged to user around the dehumidifier) by microwave source, have and the identical construction of dehumidifier shown in Fig. 8 according to the dehumidifier of second aspect present invention.

Should be understood that, above-mentioned microwave dehumidifier/regeneration is arranged and at architectural environment (for example can be formed, office) separate unit at ventilating opening place or in the enclosure space is perhaps alternatively no matter whether air handling system comprises that the heat exchanger according to first aspect present invention all is configured to integral unit with this air handling system.When being fabricated to described separate unit, should be appreciated that this unit is used to reduce the humidity in the air handling system environment simply, and therefore be used as the simple dehumidifier of entire environment by the closure property of building environment.In order concentrate to use more, the dehumidifier that contains above-mentioned micro wave regeneration is generally and utilizes the integrated unit of air handling system of the dew point heat exchanger of the aspect according to the present invention.In this case, the microwave dehumidifier is arranged to act directly on and is entered on the air, to reduce its moisture content, enter the psychrometric difference between the air in air and the heat exchanger thereby reduce, so that liquid is taken in the wet channel of heat exchanger by the portion of air of returning by side opening.

Fig. 9 provides the schematic diagram of the integrated air regulating system of the microwave dehumidifier that is used for air conditioning that comprises the aspect according to the present invention and dew point heat exchanger.In this case, fan unit 91 contains inlet fan 93 and outlet fan 94 separately, is used for air-flow is aspirated and be driven into air handling system.Enter stream 93 with the air intake system, in system, provide dew point heat exchanger 92 and dehumidifier 93 to extract heat, to reduce its temperature and humidity from entering air.Should be understood that dehumidifier unit 93 can be strengthened the psychrometric difference at heat exchanger 92 two ends earlier, with regard to discharging air, further dehumidify for this air then if service condition needs.In this case, extraly, filter unit 95 can be set comprise all impurity of dust, and guarantee to discharge air stream and be in desired temperatures and humidity with removal.Should be appreciated that drier can easily remove too much moisture, therefore make air for too dry the room user is on accepting.Can understand,, can obtain more suitable humidity by mixing with surrounding air.

Power consumption aspect from the dehumidifier that utilizes microwave of the aspect according to the present invention should be understood that depress in room temperature and normal atmosphere, the microwave energy of 1 kw can evaporate the roughly water of 1.135 kg in one hour.In this case, for 27 m ²The room, moisture load is 0.01 kg, the power consumption of microwave dehumidifier is 1 watt under this environment.This energy level is lower than conventional bulb in the room, cost and more long-term be acceptable aspect lasting.

Obviously, the use of microwave energy brings special design problem.In this case, the opening that uses the honeycomb metal air vent to come shade to be used to ventilate usually is with the electromagnetic wave of defending not expect.The shielding of this electromagnetic radiation is to be used for preventing might injuring the institute of user, owner and the operator's of dehumidifier layout, air handling system or the heat exchanger of the aspect according to the present invention health and safety.Be the safety guarantee purpose, this system should be with the time closing electric power immediately in definite system failure or misuse and providing warning light and/or the safety interlock of audible signal, temperature sensor and leakage detector use.

The air handling system of aspect and dehumidifier can be positioned at building according to the present invention.In this case, dehumidifier can be arranged as has inlet, so the inlet of air handling system/heat exchanger passes through window.Figure 10 and Figure 11 provide the schematic diagram of the dehumidifier unit 200 that is used for being arranged in window.Therefore, dehumidifier is arranged the microwave source 201 that comprises the magnetron form, and this microwave source 201 focuses on and point to drier wheel 202, and drier wheel 202 is arranged through drive motors 203 and driving-belt 204 rotations.Around wheel 202 3/4ths provide electromagnetism shade 205 so that in the regeneration passage that produces at pyrotoxin, avoid taking turns any reduction of 202 effect on moisture extraction by magnetron or microwave source 201.This dehumidifier arranges and is positioned at housing 206 that this housing 206 has the input air-flow that is produced by fan 207.

Figure 11 provides along the schematic sectional view of direction AA-AA among Figure 10.In this case, drier wheel 202 is rotated by the motor (not shown), thereby produces two flow channels.Gas channel along

arrow

210a, 210b direction passes housing 206 and drier wheel 202, to be ejected as dry air 210b by fan 207.The regeneration flow channel produces by regeneration or reaction air-flow 211a, the 211b that passes drier wheel 202 once more, removes moisture with trailing wheel 202, rather than absorbs moisture with dehumidification function.In order to dehumidify, wheel 202 is used as the magnetron heating of microwave source 201, and in this case, air-flow 211b is got wet to discharge in order to outer jet with from dehumidifier is arranged.Should be understood that, arrange appropriate position in 200,, electromagnetism shade 205 is set, can not bring environmental problem and be reduced in the effect on moisture extraction of arranging in 200 the other parts arranging 200 user to guarantee microwave particularly at the entrance and exit place at dehumidifier.Notice that microwave source 201 itself has cold air source 212, this can increase to reaction or regeneration air stream 211.

The combination of heat exchanger and/or dehumidifier by the aspect according to the present invention can obtain to be used for the more desirable air handling system of building.Under the prevailing situation of weather condition, can utilize dew point to be used for providing cooling blast, perhaps dividually or as the part of air handling system, the dehumidifying of arranging by the dehumidifier that more effectively and more cheaply utilizes microwave of the aspect according to the present invention is regulated and is entered air stream.Usually, the dew point heat exchanger utilizes running water, and its consumption rate is about 1.1 to 2.4 liters every kilowatt-hour cooling output usually.This use is acceptable under common service condition, and for example (that is, at 9 in the morning and afternoon 5 between) provides under the situation of air conditioning during the working time, at 100 m with 30 watts of cooling requirements of every square meter ²In the building, have 2 kilowatts cooling input and about 570 to 1800 m per hour ²Air rate under, the daily consumption rate of the dew point heat exchanger of aspect is about 60 to 70 liters according to the present invention.But consumption rate etc. all depend on humidity and other operation demand.

Aspect of the present invention utilizes described dew point (evaporation) cooling, has broken the restriction of wet bulb humidity constraint, allows the supply air to be cooled to the level that is lower than wet bulb and is higher than the outdoor air dew point.In order to realize this point, be created in the cooling aspect and can obtain dew point heat exchanger up to 85% dew point efficient.By this advantage about dew point cooling aspect, evaporative cooling can be used widely.

Heat exchanger comprises a plurality of polygonal panel of piling up with formation same material air-flow guide plate.Usually, a side that forms the heat-conducting plate of zone of heating is coated with waterproof material, to avoid infiltration.The inlet of air inlet feeds dry passage from the bottom of heat exchanger heap usually.In this case, in service, air flows through main road or dry passage earlier in order to cooling, then in the export department of dry passage, portion of air continues to flow so that the air conditioning effect to be provided along identical direction, and another part air-flow goes to adjacent wet path or wet channel surperficial wet by water.Wet channel allows to absorb heat by evaporation of water on the surface via heat-conducting layer.Air in the wet channel flows in opposite direction, and arranges to atmosphere from discharge section at last.To be cooled owing to regulate the product air of air in the heat transmission between dry passage and the wet channel, dry passage, the control air in wet path or the passage will be by humidification and heating.Figure 12 and Figure 13 show this operation of the dew point heat exchanger of the aspect according to the present invention respectively.In this case, enter or air inlet 301 is advanced along the dry passage 302 that forms between the thermoconductive material board 304.Thermoconductive material board 304 defines wet channel and dry passage.At the end or the far-end of dry passage, side opening or hole 303 are used for that a part is entered air 301 and change wet channel 305 over to, and now be cooled all the other enter air with the product air of air conditioning that acts on aspect according to the present invention, shown in arrow 306.In wet path or wet channel, water and moisture are provided, this water or moisture are evaporated by the heat exchange of plate 304, so that the evaporation latent heat cooling enters air-flow 301, thereby air-flow 306 output or output is used for air conditioning.In the wet channel now the air of humidification discharge by exhaust outlet along the direction of arrow 307.

Should be understood that, be provided with a large amount of thermal conductive material layers 304, this is to obtain abundant cooling by high heat conduction relation of generation and forced air flow between dry passage and wet channel.It is also understood that wet channel contains cellulose fibre or other material, to be used as the hydrophily dispersion that the wet G﹠W that is used for evaporating is provided.

Curve shown in Figure 12 shows the air handling process of the aspect according to the present invention.Outdoor air O uses humidity controller to carry out preliminary treatment earlier, and humidity controller allows its moisture content to be reduced to the level identical with room air, thereby reaches state " 0 ".Air mixes with the room air of state " 1 " then, produces new state " 1 ", and this state is the state of the air inlet of heat exchanger.Described air inlet is gone to dry passage, and it is passed to adjacent wet channel with heat here, and is cooled to state " 2 " from state " 1 ", does not moisturize to air.Portion of air is transported to room space, is used to cool off this space.Remaining air flows into adjacent wet channel, and here owing to have moisture on the absorbing path surface, it at first becomes saturated, then owing to the heat transmission between the dried wet channel continues to absorb sensible heat and moisture, helps wet lip-deep evaporation of water.Described air is discharged to atmosphere at last, as saturated and air-flow heat, is defined as state " 3 ".

For comfortable air conditioning, the humidity level of room air can change on wide scope, relevant humidity range from 30 to 70%.This allows the minimum energy consumption of removing moisture and minimum possibly from fresh air for air dewetting.

The mathematical analysis of the cooling performance of dew point system.

The integer that uses in the following formula is as follows:

c _p---the specific heat of air, kJ/kg. ℃;

The moisture content of d---air, the kg/kg dry air;

The enthalpy of h---air, the kJ/kg dry air;

M---the water consumption rate of every kilowatt of cooling output, liter/kWh;

M _Daily---the daily water consumption of selected building, liter/sky;

Q---the cooling capacity of dew point system, W;

Q _p---the cooling output of supply air, W;

Q _P1---the interior sense load of supply air, W;

Q _P2---the fresh air load of supply air, W;

T---air themperature, ℃;

V---volume of air flow velocity, m ³/ h;

V _Target---be used for the volume of air flow velocity of target building, m ³/ h;

ρ---atmospheric density, 1.2kg/ m ³

ρ _w---water density, 1kg/ liter;

η _d---dew point efficient;

Subscript

O---outdoor air;

0---the fresh air after the dehumidifying;

I---room air;

1---enter air;

2---the supply air;

3---discharge air;

Dp---dew point.

The cooling capacity of dew point system can be calculated as follows:

Figure 2009801468552100002DEST_PATH_IMAGE002

（1）

Relation between the

state

1,2 and 3 can be expressed as follows:

（2）

（3）

（4）

（5）

（6）

Therefore can realize obtaining h from the air humidity correction formula ₃, d ₃And t ₃Value.

The water consumption of every kilowatt of cooling output is

（7）

In order to keep the space air distribution equilibrium, the fresh air flow volume should be long-pending identical with the discharge air fluid, i.e. V ₀=V ₃, and return that air fluid is long-pending should be long-pending identical with the supply air fluid, i.e. V ₁=V ₂In this case, can use the cooling capacity of following formula computing system:

（8）

If room temperature is ti, the cooling energy of sensible heat load can be designated as in being used to so remove:

（9）

Because this a part of cooling energy is used to remove internal load, so be defined as effective cooling output.

The cooling energy that is used to remove the fresh air load is designated as:

（10）

For effective cooling output of 2 kW, volume required flow velocity can followingly calculate:

（11）

To have 30W/m ²The 100m of cooling load ²Office building air be example, if system's operation is limited to daytime, promptly at 9 in the morning, so required total cooling energy was 100*30*8/1000=24kWh to point in afternoons 5.Daytime, the water consumption of office's operation was:

（12）

Should be appreciated that according to the present invention employed dew point heat exchanger in aspect can be used in the independent air conditioning in many independent rooms (for example, house or the working space in office's building) that are positioned at building structure.Alternatively, heat exchanger or several heat exchanger can combine with central air conditioning system and be used for whole building.In this case, the air conditioning in the building can be controlled by middle ground by the water evaporation, by pipeline the air of regulating is delivered to independent room or space then.Should be appreciated that in the place of the accurate control that needs room air temperature and humidity state in the use before the dew point heat exchanger, the air after the processing may need pre-dehumidifying.In this case, the simple dehumidifier that can use the silicagel pad form can utilize this drier of above-mentioned micro wave regeneration then as drier.In this case, the constant repeatedly cooling capacity by obtaining can realize stable dew point air supply.

For the dew point heat exchanger of the aspect operation according to the present invention is provided, should be appreciated that in by the evaporation process in the cooling of air after the processing of dry passage, must use moisture, particularly water.Because its availability and supply is easy, uses running water usually.But running water also is used for other function, must consider that therefore relevant this use is acceptable, particularly in the place that can use rainwater or untreated river.

Ideally, running water should be lower than the dew point of heat exchanger ambient atmosphere aspect temperature.This situation allows to obtain effectively cooling by the air handling system of using the dew point heat exchanger of aspect according to the present invention.Because running water carries by pipeline from the water source usually, and these pipelines are embedded in the height of underground, so water temperature is stabilized in the soil moisture of this degree of depth usually.In this case, the dew point with the above the ground atmosphere that water pipe is set is identical or lower slightly than it at least for water temperature.This situation allows to implement the dew point heat exchange with effective and efficient manner.In addition, aspect water volume consumption, can calculate based on a plurality of hypothesis (that is, exhaust and air ratio are 0.5, and dew point efficient is 0.85).In this case, the water consumption rate is about 2.1 to 2.4 liters every kilowatt-hour, and as mentioned above, this causes the consumption rate of scope 64 to 72 liters of every days.But this estimation depends on the level of humidity very much, and dry hot climatic province consumes more water than the zone of warm and moist usually.

As mentioned above, can calculate the cooling capacity of dew point heat exchanger based on formula 1 to 9.Based on 1 cubic metre of air supply/discharge rate hourly, calculate the total capacity of acquisition air handling system and the air-supply load relevant with this system, described air-supply load reaches the energy of acceptable indoor horizontal from outdoor value for the temperature that is used to make air inlet or enter air.Under the situation, the clean cooling that is called effective cooling capacity is output as the value that deducts total cooling capacity from the air-supply load in this.Effectively cooling capacity depends on weather condition, and particularly therefore the dew point of dry bulb state, wet bulb state and surrounding air can change to another place from a place.But, for example, can find effective cooling capacity at 2.9 to 9.5 watts every cubic metre per hour in the scope of air velocity, this makes that the heat exchanger average effective cooling capacity of aspect is 2.97 according to the present invention.Be to be understood that, in this case, during the great majority in summer, effectively cooling capacity can fall into 1 to 5 watt every cubic metre per hour in the salband of air velocity, and because the air-supply load in night is lower than daytime, so night cooling capacity cooling capacity on a little higher than daytime.

By consulting different atmospheric conditions, can find, because that being used to of using that air handling system produces removed the ratio of cooling energy of air-supply load is bigger, so high more environment temperature causes low more effective cooling capacity.Because littler temperature difference between dry bulb and the dew point condition is so higher ambient humidity has also reduced the cooling capacity of air handling system.

For effective cooling output of 2 fixing kW, can use top formula 11 to calculate volume required flow velocity.Find that for the cooling capacity of 2 kW, necessary flow velocity per hour is about 540 to 1900 meters usually.

Regulate in order to obtain comfortable room air, enter air usually and must be adjusted to 70% acceptable moisture level level or lower.In this case, need dehumidifier, this dehumidifier can be worked independently, perhaps comes work by the air handling system that contains with good grounds heat exchanger of the present invention.

Should be appreciated that by using the heat exchanger and/or the dehumidifier of various aspects, can find that the dew point air conditioning is suitable for multiple weather conditions according to the present invention.In the high place of humidity, so above-mentioned pre-dehydrating unit or other device are necessary, so that allow the dew point heat exchanger correctly to operate.Low more relative humidity causes the high more cooling capacity of used dew point heat exchanger in psychrometric difference high more between dry bulb and the dew point humidity and the air handling system.If air is in 70% or lower relative humidity, use the dew point heat exchanger of the heat exchanger of aspect can easily be used for cooling in building or other structure so according to the present invention.

Usually running water can easily obtain, so can be used for supporting the cooling in the dew point air handling system of the aspect according to the present invention.Running water is near the surrounding air dew point or lower slightly than it, and this has guaranteed to strengthen its validity in cooling.Should be understood that when being in lower temperature, this temperature must raise via heat exchange by entering air, therefore improved the cooling that enters air rightly.

Dew point heat exchanger by the aspect according to the present invention should be understood that, has realized the structure of heat exchanger, and wherein, thin-walled highly heat-conductive material layer is used for limiting respectively dry passage and wet channel.Dry passage allows the air cooling, make portion of air can return and forward to wet channel, and a certain amount of air or required ratio can be used for air conditioning function.Heat-conducting layer is made by light sheet material, and for example therefore aluminium be arranged on usually and supported by fold and hydrophily dispersion, so that be used for the evaporation process of cooling in the dry passage.By being created in relatively thinner still long dry passage and the wet channel in width aspect, can obtain the suitable cooling of air in the dry passage.In addition,, should be appreciated that the heat exchange surface area of being got wet is big, make to obtain bigger heat exchange by forced air flow by having a large amount of this dry passage and wet channels side by side.

A certain proportion of inlet air flow has the size of the necessary ratio between the air stream that makes acquisition cooling air stream and be used for carrying evaporation water in the wet channel usually by its side opening that goes to wet channel.Possibly, the big I in described hole changes in the whole width of heat exchanger, but this variation depends on the operation needs.Usually in the exit air door is set,, thereby has changed the level of the air-flow that goes to the wet channel in the use by back pressure as prevention to cold air after the processing that is used for air conditioning.

Utilize the dehumidifier of silica gel to be generally the form of drier wheel, (that is) non-polar character, silica gel can enlarge the effect of microwave action when the experience microwave action because the drier material.In this case, compare, according to producing bigger regeneration effect in the dehumidifier of second aspect present invention with depending on photothermal existing layout.

According to a first aspect of the invention, developed the polygon interchanger that is used for the dew point cooling.The result shows that novel interchanger can obtain the enhancing dew point effect up to 90%, and is higher by 20% to 30% than traditional counter current exchanger.Advanced dew point cooling technology has been started the transpiration-cooled chance of extensive use in the air conditioning of Britain and Chinese architecture thing.For allowing the practical application of this technology, carried out reliability consideration, to investigate the most outstanding factor of the performance that influences the dew point cooling that is used for air conditioning, comprise the weather condition and the water source/available water of Britain and China.This causes being suitable for being used in the development of the dew point air-conditioning under Britain and the climate in china condition.

Those skilled in the art can know the distortion of aspect of the present invention and modification.Therefore, for example, can arrange heat exchanger, make the heat exchanger subregion, the heat exchanger in a plurality of zones puts into operation as required according to current operating condition.In addition, as mentioned above, in wet channel, has the hydrophily dispersion that is generally the cellulose fibre form, to strengthen the vaporization function aspect the cooling effect of heat-conducting layer on dry passage of dew point heat exchanger between passing through.Under the situation of dew point heat exchanger subregion, should be appreciated that these zones are convertible therein, with the recovery of hydrophily dispersion in allow using or become wet again.Usually, the air handling system of aspect will comprise the boxlike heat exchanger according to the present invention, and it can be in the air flow passage or pipeline between importing and exporting.In this case, once owing to reduction or other reason of hydrophily dispersion ability, such as relevant a certain proportion of do or wet channel gets clogged, this heat exchanger box reduces aspect operation function, and then this heat exchanger box can be removed and replacing easily.

Claims

1. heat exchanger that is used for the dew point heat exchange, described heat exchanger comprises a plurality of heat-conducting layers, described a plurality of heat-conducting layer has separately to limit and the alternating layer of drain passage and wet channel, described dry passage extends to outlet from inlet, and has a side opening that leads to adjacent wet channel, described wet channel has perforate that is used for wet gas current and the outlet that is used for heat exchanger, thereby wet gas current is driven by evaporation at least, and in using by having heat exchange with the shared heat-conducting layer of adjacent dry passage.

2. heat exchanger as claimed in claim 1, wherein said heat exchanger be used to drive a certain proportion of circulation of air and cross the device of described side opening and link to each other.

3. as claim 1 or the described heat exchanger of claim 2, wherein said side opening and described outlet have air door, so that the relative scale of the air that provides by described outlet and the described side opening that leads to described wet channel between flowing to be provided.

4. heat exchanger as claimed in claim 3 is wherein by the actuator that links to each other with described air door with depend on temperature and/or the sensor of air velocity by described heat exchanger is regulated described air door.

5. the described heat exchanger of each claim as described above, wherein said outlet is connected to collecting manifold and regulates to be used for surrounding air.

6. the described heat exchanger of each claim as described above wherein drives by the free convection via the orientation of described heat exchanger and structure or stimulates air communication to cross the described described dry passage that enters the mouth.

7. heat exchanger as claimed in claim 6, the device that wherein is used to drive described air-flow comprises fan.

8. the described heat exchanger of each claim as described above, wherein said heat exchanger can re-construct and become to depend on operation and need change air-flow.

9. the described heat exchanger of each claim as described above, wherein said air-flow be about 500 cubic metres per hour.

10. the described heat exchanger of each claim as described above, the width of wherein said dry passage and the width of described wet channel are basic identical.

11. heat exchanger as claimed in claim 10, wherein said width are 2 to 10 mm, are preferably 6 mm.

12. the described heat exchanger of each claim as described above, the same length of wherein said dry passage and described wet channel.

13. heat exchanger as claimed in claim 12, wherein said length are 0.5 to 2 m, are preferably 1.2 m.

14. the described heat exchanger of each claim as described above, wherein said heat-conducting layer is aluminium or copper or other proper metal or material.

15. the described heat exchanger of each claim as described above, wherein said heat-conducting layer is at least one side waterproof.

16. the described heat exchanger of each claim as described above, wherein at least some described wet channels comprise the hydrophily dispersion, for example cellulose fibre or sintering metal.

17. the described heat exchanger of each claim as described above, wherein said heat-conducting layer is supported on the fold reinforcement.

18. the described heat exchanger of each claim is wherein regulated the ratio of the air-flow that passes through described inlet and described outlet according to moving needs as described above.

19. heat exchanger as claimed in claim 18, wherein said ratio are 1:1.

20. heat exchanger that substantially as above is described with reference to the drawings.

21. one kind is used for the dehumidifier that air conditioning is arranged, described layout comprises the regeneration passage that is located at the drier in the sidewind passage and is located at opposite side, described gas channel dehumidifies to air-flow in being arranged to use, and described regeneration channel arrangement becomes by adding the heat abstraction moisture described drier of regenerating, and described regeneration passage comprises microwave source and is used for described microwave is concentrated on the described drier device with the described drier of local heat.

22. dehumidifier as claimed in claim 21, wherein said drier is the form of wheel.

23. as claim 21 or the described dehumidifier of claim 22, the wherein said device that is used for concentrated described microwave comprises waveguide.

24. dehumidifier as claimed in claim 23, wherein said waveguide is formed by metal.

25. as any described dehumidifier among the claim 21-24, wherein said drier is formed by non-polar material, so that water wetted material to be provided.

26. as any described dehumidifier among the claim 21-25, wherein said regeneration passage comprises the device that is used for forced air flow.

27. dehumidifier as claimed in claim 25, the wherein said device that is used for forced air flow comprises fan.

28. dehumidifier that substantially as above is described with reference to the drawings.

29. air handling system that contains just like each described dehumidifier among each described heat exchanger and/or the claim 21-28 among the claim 1-20.

30. air handling system as claimed in claim 29, wherein said dehumidifier are arranged and are linked to each other with described inlet.

31. as claim 29 or the described air handling system of claim 30, water tank is set wherein, so that moisture flows along described wet channel.

32. air handling system that substantially as above is described with reference to the drawings.