CN104048440A - Chemical adsorption type heat refrigeration system employing alkaline-earth metal halide - Google Patents
Chemical adsorption type heat refrigeration system employing alkaline-earth metal halide Download PDFInfo
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- CN104048440A CN104048440A CN201410235766.8A CN201410235766A CN104048440A CN 104048440 A CN104048440 A CN 104048440A CN 201410235766 A CN201410235766 A CN 201410235766A CN 104048440 A CN104048440 A CN 104048440A
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- 238000005057 refrigeration Methods 0.000 title abstract description 31
- 238000001179 sorption measurement Methods 0.000 title abstract description 29
- 239000000126 substance Substances 0.000 title abstract description 11
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 131
- 239000003463 adsorbent Substances 0.000 claims abstract description 84
- 238000003795 desorption Methods 0.000 claims abstract description 44
- 239000000498 cooling water Substances 0.000 claims abstract description 32
- 229910021529 ammonia Inorganic materials 0.000 claims description 60
- 238000010521 absorption reaction Methods 0.000 claims description 44
- 150000004820 halides Chemical class 0.000 claims description 25
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 12
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- 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]
- Y02B30/62—Absorption based systems
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a chemical adsorption type heat refrigeration system employing an alkaline-earth metal halide. The chemical adsorption type heat refrigeration system comprises N adsorption bed components, wherein each adsorption bed component comprises an adsorption bed unit tube component, an ammonia gas adsorption pipeline and an ammonia gas desorption pipeline, a heat source inlet pipeline, a cooling water inlet pipeline and a cooling water return pipeline; each adsorption bed unit tube component comprises M adsorption unit tubes, each adsorption unit tube comprises an adsorption outer tube, a plurality of trays arranged in the adsorption outer tube and a filter screen arranged between two adjacent rows of trays, an adsorbent is arranged in each tray, and the top ends of the adsorption outer tubes are connected to a gas manifold; a condenser, a liquid ammonia tank, a throttle valve and an evaporator are connected between each ammonia gas adsorption pipeline and each ammonia gas desorption pipeline in sequence. According to the chemical adsorption type heat refrigeration system, through cooperative application of chemical adsorption beds for adsorption and desorption, the uninterrupted heating or cooling is realized, and the refrigerating capacity and the refrigeration depth are improved under the same heat source condition.
Description
Technical field
The present invention relates to a kind of chemisorbed formula thermal refrigerating system, be specifically related to alkaline-earth halide chemisorbed formula thermal refrigerating system.
Background technology
Thermal refrigerating technology is divided into absorption refrigeration and the large class of absorption type refrigerating two.Because current absorption refrigeration product is mainly made cold-producing medium with the aqueous solution of lithium bromide, and complex process, can only be applied to air conditioning condition (more than 7 DEG C) refrigeration place, and cannot miniaturization (power is 40kw at least), simultaneously, the required energy of this series products is also higher quality, as industrial saturated vapor, natural gas or coal gas, though there is bromine gas lithium Hot water units, but the hot water that drives this unit needs larger lift and flow to carry out heat exchange, and its pump merit institute consuming electric power approaches the same order of magnitude with similar compressor assembly power consumption.
In absorption refrigeration technology, be divided into again physical type absorption type refrigerating and chemical adsorption refrigeration.Due to physical type absorption refrigeration technology exists need be to sorbing material periodic cleaning, sorbing material is many operations and the technologic defect such as aging, inefficacy easily, seldom has business-like product application.And the advantage of chemical adsorption refrigeration technology is: can utilize the low-grade heat source such as internal combustion engine flue gas and low pressure exhaust steam, chemosorbent adsorbance is large, can deep refrigerating.But, still there are some problems in current chemical adsorption refrigeration, also cause chemical adsorption refrigeration product also not start commercial applications: the one, the research of current academia to chemical adsorption refrigeration, be main mainly with single group adsorbent bed greatly, form unidirectional chemical heat of adsorption energy refrigeration system, or the step chemisorbed thermal refrigerating of two-way switching system, the infinite length of chemisorbed sufficient reaction time, this specific character cannot be applied in product, and two adsorbent bed researchs that some forward position researchers are engaged in, by one group of adsorbent bed in cooling condition, adsorption refrigerating agent, simultaneously, another group adsorbent bed heating, desorption refrigeration agent, two groups of adsorbent beds add the supporting composition refrigeration cycle of refrigeration system core, because chemosorbent is not identical with the efficiency of desorption to the efficiency of cold-producing medium absorption, produce two groups of adsorbent bed operating unbalance situations, affect refrigeration, add in the process of switching at two groups of adsorbent beds, the section of the having time is to stop heating or cooling, two groups of adsorbent beds are not simultaneously all in adsorption and desorption state, owing to not adsorbing and just can not freeze, this process forms the intermittence of refrigeration neutral, can only reach the poor effect of discontinuous refrigeration, existing this unidirectional, cooling condition does not intermittently have practical value.
Summary of the invention
The object of this invention is to provide a kind of alkaline-earth halide chemisorbed formula thermal refrigerating system, comprise N the adsorbent bed assembly being connected in parallel, each adsorbent bed assembly comprises that adsorbent bed unit pipes assembly, ammonia absorption pipeline and ammonia desorption pipeline, thermal source enter pipeline, cooling water inlet pipe road and CWR road; Described adsorbent bed unit pipes assembly comprises M adsorb unit pipe, each adsorb unit pipe comprises absorption outer tube, is arranged on the multiple pallets that adsorb in outer tube, the filter screen that is arranged on multiple pallets middle part, in each pallet, be provided with adsorbent, the top of described absorption outer tube connects gas house steward; Described gas house steward is adsorbed pipeline and ammonia desorption pipeline connection with ammonia respectively by threeway, the top of described adsorbent bed unit pipes assembly is communicated with described cooling water inlet pipe road, the bottom of described adsorbent bed unit pipes assembly is communicated with described CWR road, and the top of described adsorbent bed unit pipes assembly is connected with thermal source outlet;
Between described ammonia desorption pipeline and ammonia absorption pipeline, be connected with condenser, liquid ammonia storage tank, choke valve and evaporimeter in turn, on described ammonia absorption pipeline, be provided with unidirectional return-air control valve group, on described ammonia desorption pipeline, be provided with unidirectional leaving air control valve group, on described cooling water inlet pipe road, be provided with cooling water water inlet control valve group, described thermal source enters and on pipeline, is provided with thermal source input control valve group, described unidirectional leaving air control valve group comprises the valve a1-n1 arranging on the branch road being connected between ammonia desorption pipeline and each adsorbent bed unit pipes assembly, described unidirectional return-air control valve group comprises the valve a2-n2 arranging on the branch road being connected between ammonia absorption pipeline and each adsorbent bed unit pipes assembly, described cooling water water inlet control valve group comprises the valve a3-n3 arranging on the branch road being connected between cooling water inlet pipe road and each adsorbent bed unit pipes assembly, described thermal source input control valve group comprises that thermal source enters the valve a4-n4 arranging on the branch road being connected between pipeline and each adsorbent bed unit pipes assembly, described unidirectional return-air control valve group, unidirectional leaving air control valve group, cooling water water inlet control valve group, thermal source input control valve group are all connected with electric cabinet, and described N is integer, 3≤N≤8, and described M is greater than 2 integer.
Multiple tray stack settings in technique scheme.
Adsorbent in technique scheme is the mixture of a kind of alkaline-earth halide or more than one alkaline-earth halides.
Filter screen in technique scheme is that steel wire is made.
Thermal source in technique scheme enters pipeline and passes into the exhaust gases of internal combustion engines of heat source temperature more than 300 DEG C.
Thermal source in technique scheme enters that pipeline passes into pressure more than 0.2Mpa or the saturated vapor of temperature more than 110 DEG C.
Absorption outer tube in technique scheme is stainless-steel seamless pipe.
Pallet cross section in technique scheme is circular, multiple pallet arranged concentric.
Pallet in technique scheme is that aluminium sheet is made.
The present invention is under low-grade heat source condition, taking the supporting and end product continuous service of freezing as condition, for obtaining the actual adsorption and desorption optimum efficiency of switching time, design N adsorbent bed assembly, by at N adsorbent bed assembly, the duty of distributing each adsorbent bed assembly to match in adsorption and desorption, refrigerating capacity and the refrigeration degree of depth under equal thermal source condition are improved, improve absorption refrigeration ability, promoted absorption refrigeration technology to step new paces by scientific achievement to industrialized development.
In chemisorbed bed unit pipe of the present invention, be provided with multiple layer tray, the heat energy that the support holder structure of this multiple field can enter the external world fully and equably conducts to the chemosorbent in pallet, in the centre of annular pallet, Steel net is set simultaneously, gap between gap and multiple layer tray between steel wire, can guarantee that the path of cold-producing medium turnover chemosorbent is unobstructed.
The present invention is adsorbed pipeline and ammonia desorption pipeline, thermal source by ammonia and is entered pipeline, cooling water inlet pipe road and CWR road and gather in chemisorbed bed unit, and controls separately by electric cabinet, does not interfere with each other each other, and control accuracy is high.
Single group adsorbent bed that the present invention breaks traditions, or two groups of adsorbent beds switch step chemisorbed thermal refrigerating structure, by three groups of above chemisorbed beds are set, and according to the requirement of the refrigeration degree of depth, chemisorbed bed unit sum is set, and under the working condition of this refrigeration degree of depth, reasonable distribution is participated in the quantity of the chemisorbed bed of adsorption and desorption, ensure on arbitrary time point, by three groups or above adsorption and desorption chemisorbed bed fit applications, can reach heating or cooling incessantly, under equal thermal source condition, improve refrigerating capacity and the refrigeration degree of depth, whole system can be utilized low-grade heat source, source such as waste heat as useless in low-pressure steam and motor exhaust etc. etc., as drive energy, reach the energy saving and emission reduction effects in the useless waste heat of cascade utilization source.
Brief description of the drawings
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is system architecture schematic diagram of the present invention;
Fig. 3 is adsorb unit pipe structural representation of the present invention;
In figure: 1, adsorbent bed assembly (1.1, absorption outer tube; 1.2, pallet; 1.3, filter screen; 1.4, adsorbent); 3, adsorbent bed unit pipes; 5, connecting leg; 6, gas house steward; 7, adsorbent bed group; 8, condenser; 9, liquid ammonia storage tank; 10, choke valve; 11, evaporimeter; 12, electric cabinet; 13, ammonia desorption pipeline; 14, cooling water inlet pipe road; 15, thermal source enters pipeline; 16, unidirectional leaving air control valve group; 17, unidirectional return-air control valve group; 18, cooling water water inlet control valve group; 19, thermal source input control valve group; 20, ammonia absorption pipeline; 21, CWR road; 22, thermal source import; 23, thermal source outlet; 24, cooling water inlet; 25, coolant outlet.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Alkaline-earth halide chemisorbed formula thermal refrigerating system, as shown in Figure 1 and Figure 2, comprise N the adsorbent bed assembly 1 being connected in parallel, each adsorbent bed assembly 1 comprises that adsorbent bed unit pipes assembly, ammonia absorption pipeline 20 and ammonia desorption pipeline 13, thermal source enter pipeline 15, cooling water inlet pipe road 14 and CWR road 21; Adsorbent bed unit pipes assembly comprises M adsorb unit pipe, each adsorb unit pipe comprises absorption outer tube 1.1 that stainless-steel seamless pipe makes, is arranged on the multiple pallets 1.2 in absorption outer tube 1.1, the stacked setting of multiple pallets 1.2, and be arranged on the filter screen 1.3 at multiple pallets 1.2 middle parts, as shown in Figure 3, filter screen 1.3 is made for steel wire, in each pallet 1.2, is provided with adsorbent 1.4, and adsorbent 1.4 is the mixture of a kind of alkaline-earth halide or more than one alkaline-earth halides.The top of absorption outer tube 1.1 connects gas house steward 6, gas house steward 6 is communicated with ammonia absorption pipeline 20 and ammonia desorption pipeline 13 respectively by threeway, the top of adsorbent bed unit pipes assembly is communicated with cooling water inlet pipe road 14, the bottom of described adsorbent bed unit pipes assembly is communicated with described CWR road 21, and the top of described adsorbent bed unit pipes assembly is connected with thermal source outlet 23, between ammonia desorption pipeline 13 and ammonia absorption pipeline 20, be connected with condenser 8, liquid ammonia storage tank 9, choke valve 10 and evaporimeter 11 in turn, on ammonia absorption pipeline 20, be provided with unidirectional return-air control valve group 17, on ammonia desorption pipeline 13, be provided with unidirectional leaving air control valve group 16, on cooling water inlet pipe road 14, be provided with cooling water water inlet control valve group 18, thermal source enters and on pipeline 15, is provided with thermal source input control valve group 19, unidirectional leaving air control valve group 16 comprises the valve a1-n1 arranging on the branch road being connected between ammonia desorption pipeline 13 and each adsorbent bed unit pipes assembly 1, described unidirectional return-air control valve group 17 comprises the valve a2-n2 arranging on the branch road being connected between ammonia absorption pipeline 20 and each adsorbent bed unit pipes assembly 1, cooling water water inlet control valve group 18 comprises the valve a3-n3 arranging on the branch road being connected between cooling water inlet pipe road 14 and each adsorbent bed unit pipes assembly 1, thermal source input control valve group 19 comprises that thermal source enters the valve a4-n4 arranging on the branch road being connected between pipeline 15 and each adsorbent bed unit pipes assembly 1, unidirectional return-air control valve group 17, unidirectional leaving air control valve group 16, cooling water water inlet control valve group 18, thermal source input control valve group 19 are all connected with electric cabinet 12, the integer that N is 3-8, and M is greater than 2 integer.
Thermal source enters pipeline 15 and passes into the exhaust gases of internal combustion engines of heat source temperature more than 300 DEG C, or enters at thermal source that pipeline 15 passes into pressure more than 0.2Mpa or the saturated vapor of temperature more than 110 DEG C.
Absorption outer tube 1.1 is stainless-steel seamless pipe, and pallet 1.2 is made for aluminium sheet, and pallet 1.2 cross sections are circular, multiple pallet 1.2 arranged concentric.
As shown in Figure 3, every group of adsorbent bed group system, it is the Trinity structure of collection ammonia path, heat passage and water passage, that is: in the main frame container of a relative closure, the pipe group being made up of adsorbent bed unit pipes is placed in the middle, gas house steward 6 exports by a three-way connection and has connected respectively two thermal source input control valve group groups, and one of them thermal source input control valve group group is unidirectional leaving air control valve group 16, and another is one-way air inlet control valve group 17; Water inlet pipe, by a cooling water water inlet control valve group 18, extends into water inlet in main frame container, below main frame container, cooling water flow out of, and imports CWR road 21; Thermal source, enters in main frame container by a thermal source input control valve group 19 along special pipeline, conducts heat after cooling, exports 23 effusion main frame containers from thermal source.
General principle of the present invention is utilize the heat release in the reversible complex reaction process of alkaline-earth halide and ammonia and absorbed heat.With alkaline-earth metal CaCl
2for example, reversible complex reaction process is as follows:
Adsorbent 1.4 in adsorbent bed unit pipes 3 at normal temperatures, can be with cold-producing medium ammonia by intermolecular Van der Waals force, be combined into stable complex compound, and discharge certain reaction heat, in the time that the complex compound of stable alkaline-earth halide and ammonia is heated, heat conducts to pallet 1.2 from canister outside by heat, pallet 1.2 conducts heat to chemosorbent again, the ammonia of the HTHP that adsorbent desorption goes out, through filter screen 1.3 and connecting leg 5, enter unidirectional ammonia desorption pipeline 13, participate in external refrigeration cycle; And filter screen 1.3 effects are, while preventing that ammonia band pressure from overflowing, to take adsorbent 1.4 powder out of pallet 1.2, enter into circulating line, affect valve parts and normally work.And the outside low-temp low-pressure ammonia flowing back to, while getting back in adsorbent bed unit pipes, has started again the absorption of a new round and has formed alkaline-earth halide and the complex compound process of ammonia.
Embodiment 1
As shown in Figure 1, absorption outer tube 1.1 in adsorbent bed unit pipes 3 is the main material of IG18Ni9Ti stainless-steel seamless pipe of Φ 70 × 2 × 500mm, the pure aluminum plate of pallet 1.2 use 0.4mm is made annular container, pallet 1.2 fills 500 grams, alkaline-earth halide adsorbent, and every group of adsorbent bed is made up of 4 adsorbent bed unit pipes 3.
As Fig. 2, thermal source is 7kw × 2 electric heating low-pressure steam generators, the saturated vapor 5kg that exportable pressure per hour is 0.3Mpa, and condenser 8 is the ethylene glycol ice bucket taking coil pipe as evaporimeter, volume is 20 liters.
As Fig. 3, employing low-pressure steam is thermal source, is placed in the top of adsorbent bed group 7 so thermal source enters pipeline 15, and thermal source outlet 23 is positioned over the bottom of adsorbent bed group 7.This model machine target is by extremely-15 DEG C of ethylene glycol refrigeration, adopts three groups of adsorbent bed cellular constructions, and wherein 1 group of adsorbent bed adds thermal desorption, another 2 groups of cooling absorption of adsorbent bed.
As Fig. 2, when thermal source steam enters pipeline 15 along thermal source, enter A group adsorbent bed group by thermal source input control valve group 19 valve groups, be subject to programmable controller control, the A pipe group of Steam Heating adsorbent bed group 7, desorption goes out HTHP ammonia, enters into ammonia desorption pipeline 13 through 16 valves of unidirectional leaving air control valve group 16, now 16 valves of the unidirectional leaving air control valve group 16 on ammonia desorption pipeline 13 are opened, and the a2 valve of the unidirectional return-air control valve group 17 of ammonia absorption pipeline 20 cuts out.
The ammonia going out from A group adsorbent bed desorption, after 16 valves enter ammonia desorption pipeline 13, enter again in condenser 8, be condensed into liquefied ammonia, flow in liquid ammonia storage tank 9 by Action of Gravity Field, liquefied ammonia in liquid ammonia storage tank 9 spreads through choke valve 10, and vaporization in evaporimeter (coil pipe ice bucket), absorption refrigeration, become the ammonia of low-temp low-pressure, enter ammonia absorption pipeline 20, then adsorb b2, the n2 valve of the unidirectional return-air control valve group 17 of pipeline 20 through ammonia, the Guan Zuzhong that gets back to B group adsorbent bed B and N group adsorbent bed, is combined into complex compound with alkaline-earth halide.
As Fig. 2, when A group adsorbent bed adds thermal desorption, when B group and the cooling absorption of N group adsorbent bed, under the control of Programmable Logic Controller, in three valves of thermal source input control valve group 19, a4 valve is opened, and b4 valve and n4 valve are closed; In the unidirectional leaving air control valve group 16 of ammonia desorption pipeline 13, a1 valve is opened, and b1 valve and n1 valve are closed; In three valves of the unidirectional return-air control valve group 17 of ammonia desorption pipeline 13, a2 valve cuts out, and b2 valve and n2 valve are opened; In three valves of cooling water water inlet control valve group 18, a3 valve cuts out, and b3 valve and n3 valve are opened.
When the A group adsorbent bed desorption of setting arrives cycle time, need switch to B group adsorbent bed desorption, and A group and N group adsorbent bed be while adsorbing simultaneously, under the control of Programmable Logic Controller, in thermal source input control valve group 19, the unlatching of b4 valve, a4 valve and n4 valve are closed; In the unidirectional leaving air control valve group 16 of ammonia desorption pipeline 13, b1 valve is opened, and 16 valves and n1 valve are closed; In unidirectional return-air control valve group 17 in ammonia absorption pipeline 20, b2 closes, and a2 valve and n2 valve are opened; In cooling water water inlet control valve group 18, b3 closes, and a3 valve and n3 valve are opened.
When the B group desorption of setting arrives cycle time, need switch to N group desorption, and A group and B group be while adsorbing simultaneously, under the control of Programmable Logic Controller, in thermal source input control valve group 19, n4 opens, a4, b4 pass; In the unidirectional leaving air control valve group 16 of ammonia desorption pipeline 13, n1 opens, 16, b1 close; In the unidirectional return-air control valve group 17 of ammonia absorption pipeline 20, n3 closes, and a3, b3 open; In cooling water water inlet control valve group 18, n2 closes, and a2, b2 open.
In embodiment of the present invention model machine, to the alkaline-earth halide heat energy absortion type refrigerating equipment input 0.3Mpa saturated vapor 5kg/ hour of three groups of adsorbent beds, 755 watts of actual measurement output refrigerating capacitys, ethylene glycol minimum temperature reaches-19.5 DEG C.
This description is not described in detail part for prior art.
Claims (9)
1. an alkaline-earth halide chemisorbed formula thermal refrigerating system, it is characterized in that: comprise N the adsorbent bed assembly (1) being connected in parallel, each adsorbent bed assembly (1) comprises that adsorbent bed unit pipes assembly, ammonia absorption pipeline (20) and ammonia desorption pipeline (13), thermal source enter pipeline (15), cooling water inlet pipe road (14) and CWR road (21);
Described adsorbent bed unit pipes assembly (1) comprises M adsorb unit pipe, each adsorb unit pipe comprises absorption outer tube (1.1), is arranged on the multiple pallets (1.2) that adsorb in outer tube (1.1), the filter screen (1.3) that is arranged on multiple pallets (1.2) middle part, in each pallet (1.2), be provided with adsorbent (1.4), the top of described absorption outer tube (1.1) connects gas house steward (6);
Described gas house steward (6) is communicated with ammonia absorption pipeline (20) and ammonia desorption pipeline (13) respectively by threeway, the top of described adsorbent bed unit pipes assembly is communicated with described cooling water inlet pipe road (14), the bottom of described adsorbent bed unit pipes assembly is communicated with described CWR road (21), and the top of described adsorbent bed unit pipes assembly is connected with thermal source outlet (23);
Between described ammonia desorption pipeline (13) and ammonia absorption pipeline (20), be connected with condenser (8), liquid ammonia storage tank (9), choke valve (10) and evaporimeter (11) in turn;
On described ammonia absorption pipeline (20), be provided with unidirectional return-air control valve group (17), on described ammonia desorption pipeline (13), be provided with unidirectional leaving air control valve group (16), on described cooling water inlet pipe road (14), be provided with cooling water water inlet control valve group (18), described thermal source enters and on pipeline (15), is provided with thermal source input control valve group (19), described unidirectional leaving air control valve group (16) comprises the valve a1-n1 arranging on the branch road being connected between ammonia desorption pipeline (13) and each adsorbent bed unit pipes assembly (1), described unidirectional return-air control valve group (17) comprises the valve a2-n2 arranging on the branch road being connected between ammonia absorption pipeline (20) and each adsorbent bed unit pipes assembly (1), described cooling water water inlet control valve group (18) comprises the valve a3-n3 arranging on the branch road being connected between cooling water inlet pipe road (14) and each adsorbent bed unit pipes assembly (1), described thermal source input control valve group (19) comprises that thermal source enters the valve a4-n4 arranging on the branch road being connected between pipeline (15) and each adsorbent bed unit pipes assembly (1), described unidirectional return-air control valve group (17), unidirectional leaving air control valve group (16), cooling water water inlet control valve group (18), thermal source input control valve group (19) are all connected with electric cabinet (12), described N is integer, 3≤N≤8, and described M is greater than 2 integer.
2. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 1, is characterized in that: the stacked setting of described multiple pallets (1.2).
3. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 1 and 2, is characterized in that: described adsorbent (1.4) is the mixture of a kind of alkaline-earth halide or more than one alkaline-earth halides.
4. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 3, is characterized in that: described filter screen (1.3) is made for steel wire.
5. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 1, is characterized in that: described thermal source enters pipeline (15) and passes into the exhaust gases of internal combustion engines of heat source temperature more than 300 DEG C.
6. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 1, is characterized in that: described thermal source enters that pipeline (15) passes into pressure more than 0.2Mpa or the saturated vapor of temperature more than 110 DEG C.
7. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 3, is characterized in that: described absorption outer tube (1.1) is stainless-steel seamless pipe.
8. alkaline-earth halide chemisorbed formula thermal refrigerating system according to claim 2, is characterized in that: described pallet (1.2) cross section is circular multiple pallets (1.2) arranged concentric.
9. according to the alkaline-earth halide chemisorbed formula thermal refrigerating system described in claim 2 or 8, it is characterized in that: described pallet (1.2) is made for aluminium sheet
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109386990A (en) * | 2018-10-09 | 2019-02-26 | 宁波工程学院 | Absorption refrigeration utensil |
| CN111023230A (en) * | 2019-12-25 | 2020-04-17 | 海南捷信环境工程有限公司 | Multi-tank adsorption type sewage source heat pump |
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| CN111023230A (en) * | 2019-12-25 | 2020-04-17 | 海南捷信环境工程有限公司 | Multi-tank adsorption type sewage source heat pump |
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| CN104048440B (en) | 2016-05-25 |
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