CN109386990A - Absorption refrigeration utensil - Google Patents
Absorption refrigeration utensil Download PDFInfo
- Publication number
- CN109386990A CN109386990A CN201811186373.7A CN201811186373A CN109386990A CN 109386990 A CN109386990 A CN 109386990A CN 201811186373 A CN201811186373 A CN 201811186373A CN 109386990 A CN109386990 A CN 109386990A
- Authority
- CN
- China
- Prior art keywords
- level
- absorber
- refrigerant
- class
- refrigerating appliance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
- F25B17/02—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a liquid, e.g. brine
- F25B17/04—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a liquid, e.g. brine with two or more boilers operating alternately
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
Multi-stage absorption refrigerating appliance comprising cabinet includes one in cabinet to three-level absorber, and the structure of the porous adsorbing material of three absorbers is all satisfied following relationship: space rate is from KLevel-oneTo KThree-levelIt is relevant to pressure drop of the refrigerant in refrigerating appliance along the flow direction of refrigerant, is linearly increased, so that appliance internal is flowed to along refrigerant, the unit time adsorption capacity of porous adsorbing material is consistent.
Description
Technical field
This disclosure relates to a kind of refrigeration equipment, more particularly to the multi-stage absorption formula refrigerator of cooling absorption and heating desorption
Tool.
Background technique
With the continuous development of adsorption refrigeration system, the improvement type of adsorption refrigeration system is more and more, including inhales
Attached formula air-conditioning/heat pump, solar adsorption-type refrigerating machine, absorption icemaker etc..The metal heat and stream of absorption refrigeration equipment
Body heat appearance is affected to the performance COP of adsorption refrigeration system.
Existing adsorption refrigeration system generally uses two adsorption machines, an evaporator and a condenser, throttle valve
Deng.When an adsorption plant is connected to condenser, just in heating desorption, another adsorption plant is communicated with evaporator, cooling
Absorption.After the completion of desorbing adsorption process, by heating the valve of pipeline and cooling line, switch the work of two adsorption plants
State can be realized continuous cooling.
The adsorption capacity of adsorption plant influences the cycle period of system, namely influences the unit time refrigeration energy of refrigeration system
Power, therefore to improve the refrigerating capacity of refrigeration system, obtains higher COP, it is necessary to accelerate adsorption plant adsorption capacity and
Unit time adsorption capacity.One good adsorption plant, can be from various aspects such as the design of its structure, the heat-transfer characters of absorption working pair
Factor improves, to improve its unit time adsorption capacity.
However, when refrigerant pipe passes through the adsorbent material of adsorption plant, refrigerant pipe has phase for large-scale adsorption plant
When length.With the increase of process, the heat loss and the pressure loss of internal refrigerant are gradually increased, thus in refrigerant flow direction,
The ability that refrigerant conducts heat outward gradually has apparent decaying, and the exchange capability of heat between adsorbent material outside refrigerant and refrigerant pipe is then therewith
It gradually decreases.Thus the adsorption capacity of adsorbent material also decays therewith.To affect adsorption plant whole adsorption capacity and
The refrigerating capacity of refrigeration equipment.
Summary of the invention
The disclosure is in view of above content, and it is an object of the present invention to provide a kind of heat loss and pressure that can reduce refrigerant in adsorption plant
The multi-stage absorption refrigerating appliance of the decline problem of adsorption capacity caused by power is lost, can be improved absorbing apparatus entirety adsorption energy
Power reduces the Decay of adsorbent material, improves the refrigerating capacity and service life of refrigeration equipment, and can be according to practical system
Cold capacity adjustment participates in the absorber grade of heat exchange, to reduce operating cost.
The present invention provides a kind of multi-stage absorption refrigerating appliances comprising cabinet is provided with first class absorber, two in cabinet
Grade absorber and three-level absorber, in each absorber, filled with passing through pretreated porous adsorbing material, porous adsorbing material
Infiltration in advance is in the hot storage material liquid that solute is lithium bromide, potassium chloride or potassium bromide, the quality percentage of heat storage liquid
Than being 3~7%, infiltrating time be 8~for 24 hours, wherein porous adsorbing material is relative to the infiltration concentration of hot storage material liquid
Mass percent 20~30%；Each absorber all has refrigerant inlet pipe and refrigerant exit pipe, and refrigerant pipe is from porous adsorption material
It is passed through between material, wherein the space rate K of first class absorberLevel-oneThe space rate K of < second class absorberSecond levelThe sky of < three-level absorber
Between rate KThree-level；And:
KSecond level=KLevel-oneexp(-(C/β)(PLevel-one entrance/PSecondary exit port-1)2)
KThree-level=KSecond levelexp(-(C/β)(PSecondary inlet/PThree-level outlet-1)2)
Wherein KLevel-one、KSecond level、KThree-levelThe respectively space rate of the respective adsorbent material of level-one, second level, three-level absorber；PLevel-one entrance、
PSecondary exit port、PSecondary inlet、PThree-level outletRespectively refrigerant pipe enter first class absorber, be pierced by second class absorber, into second class absorber, wear
Inside refrigerant pressure when three-level absorber out；C is adsorbent material structural constant, pass of the β between adsorbent material and refrigerant
It is constant；So that being flowed to inside the multi-stage absorption refrigerating appliance along refrigerant, the porous adsorbing material of absorbers at different levels
Unit time adsorption capacity it is actually identical.
There is porous adsorbing material cuboid, porous adsorbing material is zeolite, work in the refrigerating appliance in each absorber
Property charcoal, activated alumina or silica gel, the porous adsorbing material cuboid in each section are coated with activated carbon fibre net, refrigerator
The refrigerant adsorbed in tool is water, methanol or ammonia.
In the refrigerating appliance, first class absorber, second class absorber, three-level absorber space rate linearly increase.And one
Grade absorber, second class absorber and three-level absorber respectively inside porous adsorbing material space rate, in the flow direction of refrigerant
It is linearly increasing.
A kind of refrigeration equipment including the refrigerating appliance is also provided, refrigeration equipment includes the first adsorbent bed and the second absorption
Bed；Include refrigerating appliance and the first heat exchange equipment described in first in first adsorbent bed, includes described in second in the second adsorbent bed
Refrigerating appliance and the second heat exchange equipment；Refrigeration equipment further includes the first four-way valve, the second four-way valve, third four-way valve, the 4th
Four-way valve, third heat exchange equipment, heat source and air conditioning terminal；Wherein heat source, the first four-way valve are through refrigerant inlet pipe, two-port valve point
It is not connected to after the first class absorber in second refrigerating appliance, second class absorber, three-level absorber again through refrigerant return
Pipe is connected to the second four-way valve forming circuit；Heat source, the first four-way valve, be respectively connected to through refrigerant inlet pipe, two-port valve it is described
The first refrigerating appliance in first class absorber, second class absorber, be connected to second through refrigerant return pipe again after three-level absorber
Four-way valve forming circuit.Wherein the first adsorbent bed and the second adsorbent bed are configured to, when the absorption of the first adsorbent bed, the second adsorbent bed
Desorption, when first round adsorption and desorption terminates, then wheel changes the absorption of the second adsorbent bed, the first adsorbent bed desorption into.
Detailed description of the invention
Fig. 1 is the monolithically fabricated figure under the refrigeration mode of multi-stage absorption refrigeration equipment of the invention.
Fig. 2 is the monolithically fabricated figure under the heating mode of multi-stage absorption refrigeration equipment of the invention.
Fig. 3 is the schematic diagram of multi-stage absorption refrigerating appliance of the invention.
Specific embodiment
In the following, be illustrated referring to 1 pair of attached drawing multi-stage absorption formula refrigeration equipment and multi-stage absorption refrigerating appliance of the invention,
As shown in Figure 1, multi-stage absorption formula refrigeration equipment 1 of the invention is that one kind can be freezed or be heated in building
Or the waste heat heat source type heat pump for freezing and heating in different spaces simultaneously.Heat pump includes high temperature heat source 2, adsorbent refrigerator
With air conditioning terminal 3, wherein adsorbent refrigerator includes the first adsorption plant 4, the second adsorption plant 5, the first heat exchange equipment 6, the
Two heat exchange equipments 7, the 8, first~the 4th four-way valve 9~12 of third heat exchange equipment and multiple valves and temperature sensor 17~22.
Adsorbent refrigerator includes two adsorbent beds, wherein the first adsorbent bed A includes sealing container, setting in sealing container
First adsorption plant 4 and the first heat exchange equipment 6, the second adsorbent bed B include sealing container, and the second absorption of setting is set in sealing container
Standby 5 and second heat exchange equipment 7, when the first adsorbent bed A absorption, the second adsorbent bed B desorption, when the second adsorbent bed B is regenerated
When process, the first adsorbent bed A carries out desorption process.
Then, the structure and workflow of the first adsorbent bed A of present embodiment and the second adsorbent bed B are said
It is bright.
As shown in Figure 1, the first adsorption plant 4 has the refrigerant pipe 13 for Working fluid flow in the first adsorbent bed A.Refrigerant pipe 13
It is made of the metal (in the present embodiment, being copper or copper alloy) of excellent thermal conductivity.First adsorption plant 4 further includes at least three
Grade absorber 4a, 4b, 4c, they all have cabinet, are filled with adsorbent material in cabinet, refrigerant pipe 13 is worn through two-port valve respectively
In the adsorbent material of absorber 4a, 4b and 4c.
The second adsorption plant 5 has the refrigerant pipe 14 for Working fluid flow in second adsorbent bed B.Refrigerant pipe 14 is excellent by thermal conductivity
Different metal (in the present embodiment, being copper or copper alloy) is constituted.Second adsorption plant 5 further includes at least three-level absorber
5a, 5b, 5c, they all have cabinet, are filled with adsorbent material in cabinet, refrigerant pipe 14 is threaded through absorption through two-port valve respectively
In the adsorbent material of device 5a, 5b and 5c.
Under refrigeration mode, control device controls the first four-way valve 9, the second four-way valve 10, third four-way valve 11 and the four or four
The direction of port valve 12 controls the flow direction of refrigerant, and refrigerant absorbs the heat of heat source 2, flow through 14 to the second adsorption plant 5 of refrigerant pipe,
Refrigerant flow to first class absorber 5a, second class absorber 5b through inlet tube and three two-port valves respectively, puts in three-level absorber 5c
Heat, namely in refrigerant flow direction, be successively arranged in parallel first class absorber 5a, second class absorber 5b, three-level from upstream to downstream
Absorber 5c.It is back in heat source 2 and absorbs heat through return pipe, the second four-way valve 10 again after refrigerant cooling, to form circulation.
What is carried out in second adsorbent bed B is desorption process.First class absorber 5a, second class absorber in second adsorption plant 5
5b, the adsorbent material of three-level absorber 5c are heated, solve adsorption desorption, adsorbent material aridity is promoted, from the cold of desorbed of adsorbed materials
Matchmaker's steam condenses heat release in the second heat exchange equipment 7, is regenerated as liquid.
What is carried out in first adsorbent bed A is adsorption process.After refrigerant heat absorption in refrigerant pipe 15 in second heat exchange equipment 7
Enter the refrigerant pipe 13 in the first adsorption plant 4 through third four-way valve 11, the first four-way valve 9, the refrigerant in refrigerant pipe 13 is successively
It flow to after first class absorber 4a, second class absorber 4b, three-level absorber 4c continue heat absorption and heats up through three two-port valves, namely cold
In matchmaker's flow direction, the first class absorber 4a that is successively arranged in parallel from upstream to downstream, second class absorber 4b, three-level absorber 4c.It rises
Refrigerant after temperature flows to third heat exchange equipment 8 through the second four-way valve 10, and returns after this heat release cooling through the 4th four-way valve 12
Second heat exchange equipment 7.
The first class absorber 5a in the first adsorption plant 4, second class absorber 5b, three-level absorber in first adsorbent bed A
The adsorbent heat release adsorption refrigerating agent of drying in 5c, therefore the pressure in the first adsorbent bed A is reduced, it thus evaporates first and changes
Refrigerant in hot equipment 6, then heat release cools down the refrigerant in refrigerant pipe 16 in the first heat exchange equipment 6, the refrigerant warp after cooling
Third four-way valve 11 flows to air conditioning terminal 3, to user's cooling supply.
After first round absorption and desorption, although being not shown in the drawings, those skilled in the art are same from attached drawing 1
Sample is appreciated that by the switching of the first~the 4th four-way valve 9~12 of control in absortion type refrigerating equipment of the invention, by first
Adsorbent bed A switches to desorption process, and the second adsorbent bed B is switched to adsorption process.Wherein, refrigerant is in the first adsorption plant 4
The first class absorber 4a in portion, second class absorber 4b, three-level absorber 4c and first class absorber 5a, two in the second adsorption plant 5
Flow direction in grade absorber 5b, three-level absorber 5c is constant always.
Under heating mode, as shown in Fig. 2, control device controls the first four-way valve 9, the second four-way valve 10, third four-way valve
11 and the 4th the switching of four-way valve 12 control the direction of refrigerant, refrigerant absorbs the heat of heat source 2, flows through refrigerant pipe 14 to the
Two adsorption plants 5, refrigerant through inlet tube followed by three two-port valves flow to respectively first class absorber 5a, second class absorber 5b,
Heat release in three-level absorber 5c, refrigerant cooling after converge to again refrigerant return pipe through the second four-way valve 10 be back in heat source 2 into
Row circulation.
What is carried out in second adsorbent bed B is desorption process.Adsorbent material in second adsorption plant 5 is heated, solves adsorption desorption,
Adsorbent material aridity is promoted, and is condensed heat release in the second heat exchange equipment 7 from the refrigerant steam of desorbed of adsorbed materials, is regenerated as liquid
State.
Air conditioning terminal is flowed into through third four-way valve 11 and pump after refrigerant heat absorption in refrigerant pipe 15 in second heat exchange equipment 7
3, in this heat release, heated to user.
What is carried out in first adsorbent bed A is adsorption process.The refrigerant in refrigerant pipe 13 in first adsorption plant 4 is through entrance
Pipe, respectively after two-port valve flows into first class absorber 4a, second class absorber 4b, absorbs heat in three-level absorber 4c, through the second four-way
Valve 10 flows to third heat exchange equipment 8, and the heat release in third heat exchange equipment 8, flows to the first heat exchange through the 4th four-way valve 12 after
Refrigerant pipe 16 in equipment 6, and continue heat release in refrigerant pipe 16, the refrigerant after cooling is through third four-way valve 11, pump, first
Four-way valve 9 returns in the first adsorption plant 4, continues cycling through.
First class absorber 4a, second class absorber 4b, three-level absorber 4c in the first adsorption plant 4 in first adsorbent bed A
The adsorbent heat release adsorption refrigerating agent of interior drying, therefore the pressure in the first adsorbent bed A is reduced, thus evaporate the first heat exchange
Refrigerant in equipment 6.
After first round absorption and desorption, cutting by the first~the 4th four-way valve 9~12 of control in adsorbent refrigerator
It changes, the first adsorbent bed A is switched into desorption process, the second adsorbent bed B is switched into adsorption process.Wherein, refrigerant is inhaled first
The applying equipment 4 and flow direction of absorber at different levels is constant always in the second adsorption plant 5.
Thus, as shown in Figure 1, Figure 3, the new absorption system with improved adsorption capacity provided by the invention is described below
The adsorption structure of cooler tool namely the first adsorption plant 4 and the second adsorption plant 5.First adsorption plant 4 has cabinet (Fig. 1
It is not shown), interior cabinet includes that first class absorber 4a, second class absorber 4b and three-level absorber 4c, the second adsorption plant 5 have
Cabinet (Fig. 1 is not shown), in cabinet in respectively include first class absorber 5a, second class absorber 5b and three-level absorber 5c, it is at different levels
The uniform filling adsorption material of absorber.The present invention by taking three-level absorption type refrigerating utensil as an example, but it is understood that, first inhale
It can be set to N grades of absorbers in the cabinet of applying equipment 4 and the second adsorption plant 5, it is preferably 6~15 that N, which is more than or equal to 3, N,.It inhales
Enclosure material is Porous, has spatial volume between material granule, and space rate K is the ratio of the spatial volume and absorber volume
Value.When adsorbent material space, rate is too small, then the refrigeration dose that adsorbent material can be adsorbed/is desorbed is also small, but adsorbent material is empty
Between rate it is too big, then adsorbent material exchange capability of heat decline, can not adsorb/be desorbed enough refrigeration doses.Thus, adsorbent material
Consistency and spatial volume must reach delicate balance, its exchange capability of heat and absorption/desorption refrigeration dose could be made equal
A suitable best performance values are obtained, herein the commonly referred to as reason on the whole of the first adsorption plant 4 and the second adsorption plant 5
It is S by unit time adsorption capacity.
Porous adsorbing material cuboid is all had in each absorber 4a, 4b, 4c, 5a, 5b, 5c, porous adsorbing material is
Zeolite, active carbon, activated alumina or silica gel, the porous adsorbing material in each absorber 4a, 4b, 4c, 5a, 5b, 5c are long
Cube is coated with activated carbon fibre net.The refrigerant adsorbed in first adsorbent bed A and the second adsorbent bed B is water, methanol or ammonia
Gas etc..
The untreated porous adsorbing material density of the prior art is smaller, and adsorption capacity is common.This teaching and research room is by examination
It tests, proposes a kind of processing method of adsorbent material with improved adsorption capacity.By above-mentioned zeolite, active carbon, active oxygen
Change aluminium or silica gel to be infiltrated in advance in hot storage material such as lithium bromide, potassium chloride, in potassium bromide alkali solute, preferably infiltrated
8 in the above-mentioned hot storage material liquid that mass percent is 3~7%~for 24 hours, wherein adsorbent material is relative to above-mentioned alkalinity warm
The infiltration concentration of storage material liquid is mass percent 20~30%, when being remarkably improved porous adsorbing material adsorption refrigerating agent
Mobility and heat storage performance.
Bulk, blocky volume outer cladding activated carbon fibre is made in the porous adsorbing material that the above method is produced, and fills
To each absorber 4a, 4b, 4c, 5a, 5b, 5c of first or second adsorption plant 4 and 5.First adsorption plant, 4 He as a result,
Higher adsorption capacity for second adsorption plant 5 has compared with the prior art.
By taking the schematic diagram of attached drawing 1 as an example, the refrigerant of the first upstream adsorbent bed A flow to three-level through inlet tube, two-port valve respectively
In absorber 4a/4b/4c, refrigerant absorbs heat at this from adsorbent material.Adsorption plant in the prior art is only level-one,
Usually there is a cabinet, internal uniform filling adsorption material, refrigerant pipe is worn and mistake from adsorbent material, along refrigerant pipe
Adsorbent material various parameters on flow direction such as material, consistency, the space rate between material granule is identical.And this
Invention finds that this kind of uniform adsorption structure in the prior art is that adsorbent material is caused to need to replace by a large amount of experiment, research
One of principal element.When refrigerant is in the flowing direction as the increase of process, pressure and heating power have significant loss, heat absorption
Ability is remarkably decreased, and the exchange capability of heat between the refrigerant and adsorbent material in refrigerant pipe weakens.Meanwhile the suction in adsorption plant
In enclosure material, the practical emission capacity of adsorbent material closer to upstream is stronger, and the refrigeration dose of absorption is bigger, and closer to downstream
The emission capacity of adsorbent material weaken, the refrigeration dose of absorption is fewer.This leads to the reality of the adsorbent material in adsorption plant
Adsorbance is uneven, its practical adsorption capacity s1 decaying, adsorption energy range along the adsorbent material on the flow direction of refrigerant pipe
Degree is uneven, and service life is not identical, and the whole practical adsorption capacity of adsorption plant is less than its theoretical adsorption capacity S.Instantly
The adsorbent material for swimming side remains unchanged in order, and when still can be used, the adsorbent material of upstream side has needed to replace, while its
The actual use period is also considerably shorter than its theoretical service life value.This directly results in the service life of the first adsorption plant
Reduction, the decline of the cost increase and ability of refrigeration system.
Thus as shown in Figure 1, Figure 3, along in the path direction of refrigerant pipe, refrigerant pipe is introduced into the one of upstream through two-port valve
In grade absorber 4a, 5a, detecting refrigerant pipe herein to enter the refrigerant pressure in first class absorber is P4a entrance、P5a entrance；Refrigerant passes through again
Two-port valve is introduced into second class absorber 4b, the 5b in middle reaches, is detected refrigerant pipe herein and is entered the refrigerant pressure in second class absorber
For P4b entrance、P5b entrance；Then refrigerant enters in three-level absorber 4c, the 5c in downstream through two-port valve, and detection enters three-level and adsorbs herein
Refrigerant pressure in device is P4c entrance、P5c entrance。
Furthermore the structure of 5 porous adsorbing material of the first adsorption plant 4 and the second adsorption plant is all satisfied following relationship: level-one
The space rate K of absorber 4a, 5aLevel-oneThe space rate K of < second class absorber 4b, 5bSecond levelThe space rate of < three-level absorber 4c, 5c
KThree-level, KLevel-one、KSecond level、KThree-levelBe relevant to pressure drop in refrigerant flow direction and increase substantially linearly, and meet inside each adsorption plant with
Lower relationship:
KSecond level=KLevel-oneexp(-(C/β)(PLevel-one entrance/PSecondary exit port-1)2)
KThree-level=KSecond levelexp(-(C/β)(PSecondary inlet/PThree-level outlet-1)2)
KLevel-one、KSecond level、KThree-levelRespectively refrigerant flows to upper level, second level, three-level absorber inside first or second adsorption plant
The space rate of each self-absorbent；PLevel-one entrance、PSecondary exit port、PSecondary inlet、PThree-level outletRespectively refrigerant pipe enters first class absorber, is pierced by second level
Absorber, into second class absorber, be pierced by three-level absorber when inside refrigerant pressure；C is adsorbent material structural constant, and β is
Relationship constant between adsorbent and refrigerant；So that flowed to inside the first, second adsorption plant along refrigerant, it is at different levels
The unit time adsorption capacity of the porous adsorbing material of absorber is actually identical.
To which the present invention corresponds to refrigerant pipe in the continuous loss of the first, second adsorption plant internal pressure P and heating power, lead to
It crosses the space rate K for the absorbers at different levels that adjustment is located at the upper different location of refrigerant flow direction and realizes the first, second adsorption plant
Various places inside adsorption capacity can not be influenced by the crushing and heat loss of refrigerant in refrigerant pipe.Thus when the unit of adsorption plant
Between adsorption capacity enhanced on the whole, further, the service life of the adsorbent material in the first, second adsorption plant
Extend, without frequently replacement, reduces the operating cost of refrigeration system.
In first, second adsorption plant 4,5 in first class absorber 4a, 5a of refrigerant upstream side, the refrigerant in refrigerant pipe is changed
Thermal energy power is strong, and heat transfer speed is maximum, therefore the compactness extent of adsorbent material is maximum, the space rate K between material granuleLevel-oneMost
It is small.In three-level absorber 4c, the 5c in downstream side, P pressure and the heating power biggish loss as process has in refrigerant pipe, refrigerant heat exchange
Ability is most weak, and heat transfer speed is minimum, therefore rate K in space between material granuleThree-levelMaximum, heat be obstructed between adsorbent material compared with
It is small, to help adsorbent material to adsorb more refrigeration doses.To 5 inner stages of the first adsorption plant 4 and the second adsorption plant
The adsorption capacity of absorber is not influenced by the crushing and heat loss of refrigerant in refrigerant pipe, being capable of uniformity.To which absorption is set
Standby adsorption capacity is enhanced on the whole, further, the absorption in the first adsorption plant 4 and the second adsorption plant 5
The service life of material extends, and without frequently replacement, reduces the operating cost of refrigeration system.Even if the suction in three-level absorber
Enclosure material service life is inconsistent, can also only replace this grade of adsorbent material, without replacing other two-stage, to save replacement
The process and cost of component.
Further, the space rate of first class absorber 4a, 5a, second class absorber 4b, 5b, three-level absorber 4c, 5c are in line
Property increase.
Further, between the space rate of first class absorber 4a, 5a, second class absorber 4b, 5b, three-level absorber 4c, 5c
It is configured so that the practical adsorption capacity of first class absorber, second class absorber and three-level absorber is identical.
Further, first class absorber 4a, 5a, second class absorber 4b, 5b, three-level absorber 4c, 5c respectively internal suction
The space rate of enclosure material, it is linearly increasing in the flow direction of refrigerant.Thus the practical suction inside each absorber in refrigerant flow direction
Attached ability is also consistent.
Further, the refrigerant inlet pipe of the first adsorption plant 4, be respectively equipped on refrigerant return pipe temperature sensor 17,
18.Temperature sensor 19,20 is respectively equipped on the refrigerant inlet pipe of second adsorption plant 5, refrigerant return pipe.Air conditioning terminal 3
Temperature sensor 21,22 is respectively equipped on refrigerant inlet/outlet pipe.So as to the temperature value detected according to the sensor, one is selected
Grade absorber 4a, 5a, second class absorber 4b, 5b, one or more levels in three-level absorber 4c, 5c work.
Further, use elongated adsorption plant and three-level absorber as exemplary illustration in the present invention, however
It will be appreciated by those skilled in the art that the flow direction of refrigerant pipe can above be arranged in any direction and according to refrigeration in the prior art
Other multi-stage absorption devices are arranged in the demand of ability.Even variation is carried out to the characteristic of adsorbent material arbitrarily on refrigerant flow direction
The invention of the loss of adsorption capacity caused by being reduced with reducing the pressure loss on flowing to and heat loss, each falls within of the invention
The open scope.
In addition, for indicating the art of positional relationship or shape applied in any technical solution disclosed in aforementioned present invention
Its meaning includes approximate with its, similar or close state or shape to language unless otherwise stated.Either component provided by the invention
Either being assembled by multiple individual component parts, or the separate part that integrally formed technique manufactures.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (5)
1. a kind of multi-stage absorption refrigerating appliance, it is characterised in that: it includes cabinet, and first class absorber, second level are provided in cabinet
Absorber and three-level absorber, in each absorber, filled with pretreated porous adsorbing material is passed through, porous adsorbing material is pre-
It first infiltrates in the hot storage material liquid that solute is lithium bromide, potassium chloride or potassium bromide, the mass percent of heat storage liquid
Be 3~7%, infiltrating time be 8~for 24 hours, wherein porous adsorbing material relative to hot storage material liquid infiltration concentration be matter
Measure percentage 20~30%；
Each absorber all has refrigerant inlet pipe and refrigerant exit pipe, and refrigerant pipe is passed through between porous adsorbing material, wherein
The space rate K of first class absorberLevel-oneThe space rate K of < second class absorberSecond levelThe space rate K of < three-level absorberThree-level；And:
KSecond level=KLevel-oneexp(-(C/β)(PLevel-one entrance/PSecondary exit port-1)2)
KThree-level=KSecond levelexp(-(C/β)(PSecondary inlet/PThree-level outlet-1)2)
Wherein KLevel-one、KSecond level、KThree-levelThe respectively space rate of the respective adsorbent material of level-one, second level, three-level absorber；PLevel-one entrance、
PSecondary exit port、PSecondary inlet、PThree-level outletRespectively refrigerant pipe enter first class absorber, be pierced by second class absorber, into second class absorber, wear
Inside refrigerant pressure when three-level absorber out；C is adsorbent material structural constant, pass of the β between adsorbent material and refrigerant
It is constant；So that being flowed to inside the multi-stage absorption refrigerating appliance along refrigerant, the porous adsorbing material of absorbers at different levels
Unit time adsorption capacity it is actually identical.
2. refrigerating appliance as claimed in claim 1 or 2, which is characterized in that have porous adsorbing material long in each absorber
Cube, porous adsorbing material are zeolite, active carbon, activated alumina or silica gel, and the porous adsorbing material in each section is rectangular
Body is coated with activated carbon fibre net, and the refrigerant adsorbed in refrigerating appliance is water, methanol or ammonia.
3. the refrigerating appliance as described in claim 1-2 is any, which is characterized in that first class absorber, second class absorber, three-level are inhaled
The space rate of adnexa linearly increases.
4. refrigerating appliance a method according to any one of claims 1-3, which is characterized in that first class absorber, second class absorber and three-level
The space rate of the respective internal porous adsorbing material of absorber, it is linearly increasing in the flow direction of refrigerant.
5. including the multi-stage absorption refrigeration equipment of refrigerating appliance a method as claimed in any one of claims 1 to 5 comprising the first adsorbent bed
With the second adsorbent bed；
It include the first refrigerating appliance a method as claimed in any one of claims 1 to 5 and the first heat exchange equipment in first adsorbent bed, second inhales
It include the second refrigerating appliance a method as claimed in any one of claims 1 to 5 and the second heat exchange equipment in attached bed；
Refrigeration equipment further includes the first four-way valve, the second four-way valve, third four-way valve, the 4th four-way valve, third heat exchange equipment, heat
Source and air conditioning terminal；
Wherein heat source, the first four-way valve are respectively connected to one in second refrigerating appliance through refrigerant inlet pipe, two-port valve
The second four-way valve forming circuit is connected to through refrigerant return pipe again after grade absorber, second class absorber, three-level absorber；Heat source,
First four-way valve, the first class absorber being respectively connected to through refrigerant inlet pipe, two-port valve in first refrigerating appliance, second level
The second four-way valve forming circuit is connected to through refrigerant return pipe again after absorber, three-level absorber.
Wherein the first adsorbent bed and the second adsorbent bed are configured to, when the absorption of the first adsorbent bed, the second adsorbent bed desorption, when first
Wheel adsorption and desorption terminates, then wheel changes the absorption of the second adsorbent bed, the first adsorbent bed desorption into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186373.7A CN109386990A (en) | 2018-10-09 | 2018-10-09 | Absorption refrigeration utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811186373.7A CN109386990A (en) | 2018-10-09 | 2018-10-09 | Absorption refrigeration utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386990A true CN109386990A (en) | 2019-02-26 |
Family
ID=65427272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811186373.7A Pending CN109386990A (en) | 2018-10-09 | 2018-10-09 | Absorption refrigeration utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386990A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510065A (en) * | 2020-04-02 | 2020-08-07 | 武汉理工大学 | Solar photovoltaic panel cooling device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729988A (en) * | 1974-11-04 | 1998-03-24 | Tchernev; Dimiter I. | Heat pump energized by low-grade heat source |
| CN1440500A (en) * | 2000-07-06 | 2003-09-03 | 泰尔马让股份有限公司 | Adsorption refrigerating device |
| CN101315227A (en) * | 2008-07-10 | 2008-12-03 | 上海交通大学 | Multi-effect adsorption type cooling cycle system |
| CN101688705A (en) * | 2007-06-22 | 2010-03-31 | 高级技术材料公司 | Component for solar adsorption refrigeration system and method of making such component |
| CN104048440A (en) * | 2014-05-30 | 2014-09-17 | 武汉箕星制冷有限公司 | Chemical adsorption type heat refrigeration system employing alkaline-earth metal halide |
-
2018
- 2018-10-09 CN CN201811186373.7A patent/CN109386990A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729988A (en) * | 1974-11-04 | 1998-03-24 | Tchernev; Dimiter I. | Heat pump energized by low-grade heat source |
| CN1440500A (en) * | 2000-07-06 | 2003-09-03 | 泰尔马让股份有限公司 | Adsorption refrigerating device |
| CN101688705A (en) * | 2007-06-22 | 2010-03-31 | 高级技术材料公司 | Component for solar adsorption refrigeration system and method of making such component |
| CN101315227A (en) * | 2008-07-10 | 2008-12-03 | 上海交通大学 | Multi-effect adsorption type cooling cycle system |
| CN104048440A (en) * | 2014-05-30 | 2014-09-17 | 武汉箕星制冷有限公司 | Chemical adsorption type heat refrigeration system employing alkaline-earth metal halide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510065A (en) * | 2020-04-02 | 2020-08-07 | 武汉理工大学 | Solar photovoltaic panel cooling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Saha et al. | Performance evaluation of a low-temperature waste heat driven multi-bed adsorption chiller | |
| Zhu et al. | Experimental investigation on composite adsorbent–Water pair for a solar-powered adsorption cooling system | |
| Chan et al. | Enhancing the performance of a zeolite 13X/CaCl2–water adsorption cooling system by improving adsorber design and operation sequence | |
| Lu et al. | Experimental investigation adsorption chillers using micro-porous silica gel–water and compound adsorbent-methanol | |
| Lee et al. | Experimental investigation of the solid desiccant dehumidification system with metal organic frameworks | |
| Wang et al. | Design and performance prediction of a novel double heat pipes type adsorption chiller for fishing boats | |
| CN109386990A (en) | Absorption refrigeration utensil | |
| CN101240951A (en) | Dual adsorption type cooling cycle system | |
| CN109556311A (en) | Multi-stage absorption refrigerating method | |
| CN105333640B (en) | A kind of shell-tube type adsorbent bed with acanthopore diaphragm type adsorbate pipe | |
| CN109556312A (en) | Multi-stage absorption refrigerating method | |
| CN100507405C (en) | Daytime continuous solar absorption refrigeration system | |
| CN109556310A (en) | Absorption refrigeration utensil | |
| CN109556315A (en) | Multi-stage absorption refrigeration equipment | |
| Tarish et al. | Impact of the adsorbent materials and adsorber bed design on performance of the adsorption thermophysical battery: Experimental study | |
| Wirajati et al. | Experimental investigation of a reheating two-stage adsorption chiller applying fixed chilled water outlet conditions | |
| CN205351849U (en) | Shell and tube formula adsorption bed with acanthopore diaphragm formula adsorbate pipe | |
| Khan et al. | Numerical simulation of advanced adsorption refrigeration chiller with mass recovery | |
| CN109556313A (en) | Multi-stage absorption refrigerating method | |
| CN109556314A (en) | Multi-stage absorption refrigerating method | |
| CN109556317A (en) | Single stage adsorption refrigerating method | |
| CN109556316A (en) | Single stage adsorption refrigeration equipment | |
| Ishugah et al. | Performance improvement of an adsorption chiller using composite adsorbent, silica gel impregnated with lithium chloride, paired with methanol as the adsorbate | |
| Zwarycz-Makles et al. | Comparison of Analytical and Numerical Models of Adsorber/desorber of Silica Gel-water Adsorption Heat Pump | |
| RAHMAN et al. | Innovative design and performance of three-bed two-stage adsorption cycle under optimized cycle time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190226 |
|
| WD01 | Invention patent application deemed withdrawn after publication |