CN102062507B - Flow ice making method and device based on lithium bromide absorption type refrigeration cycle - Google Patents
Flow ice making method and device based on lithium bromide absorption type refrigeration cycle Download PDFInfo
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- CN102062507B CN102062507B CN2011100237371A CN201110023737A CN102062507B CN 102062507 B CN102062507 B CN 102062507B CN 2011100237371 A CN2011100237371 A CN 2011100237371A CN 201110023737 A CN201110023737 A CN 201110023737A CN 102062507 B CN102062507 B CN 102062507B
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- 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
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- 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
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Abstract
The invention relates to a flow ice making method and device based on lithium bromide absorption type refrigeration cycle. A lithium bromide concentrated solution continuously absorbs steam in an absorber for causing a low-pressure environment of an evaporated refrigerating chamber; water is continuously evaporated for absorbing self heat in the low-pressure environment of an evaporated refrigerating chamber to be partially frozen into flow ice. After the lithium bromide solution absorbs steam derived from the evaporated refrigerating chamber in the absorber and is diluted, the lithium bromide solution is conveyed to a generator by a solution pump for being heated and regenerated; the concentration of the solution is improved, and the solution has the moisture absorbing ability again; and then, the solution is cooled and conveyed to the absorber to form solution absorbing-regenerating recirculation. The steam derived from the generator is condensed into subcooled water in a condenser; and after being throttled, the subcooled water is conveyed to the evaporated refrigerating chamber for making ice. An ice making system is automatically supplemented by a water tank according to the water level of the evaporated refrigerating chamber.
Description
Technical field
What the present invention relates to a kind of evaporative freezing produces the fluid state ice new method, is the method and apparatus that fluid state ice is produced in a kind of evaporative freezing based on the lithium-bromide solution Absorption Cooling System, belongs to the technical field that heat drives refrigeration, produces fluid state ice.
Background technology
Along with showing especially of energy shortage situation; The air-conditioning system energy consumption problem that the extensive use of refrigeration air-conditioner causes has caused the common concern of current social; The energy-conservation an urgent demand that becomes in the refrigerating field more under the new situation, China also proposes the foundation strategy of sustainable development.Cold-storage has important and practical meanings and using value as a kind of important means of energy-conservation and peak load shifting, wherein ices cold-storage and has advantages such as latent heat of phase change is big, cost is low and come into one's own.Traditional ice accumulation of energy exist evaporating temperature low, produce and have deficiencies such as heat transfer temperature difference is big, coefficient of performance of refrigerating is low in the process; Fluid state ice becomes the application form that the ice cold-storage has considerable prospect with its good hot rerum natura and flow behavior, therefore researchs and develops the new and effective method of producing fluid state ice and has great importance.
Summary of the invention
Technical problem:The present invention provides a kind of energy-conservation, simple in structure, easy following based on lithium bromide absorbing type refrigeration of going
The fluid state ice preparation method and the device of ring.
Technical scheme:For solving the problems of the technologies described above, technical scheme provided by the invention is:
Technical scheme of the present invention is the evaporimeter in the circulation of traditional lithium bromide absorbing type refrigeration to be changed and is transformed into fluid state ice produce module, and is aided with Auxiliary Functioning Unit and can realizes.
Fluid state ice device for making based on the lithium bromide absorbing type refrigeration circulation of the present invention is made up of solution circulating and evaporative freezing ice making module; Solution circulating comprises generator, absorber, solution heat exchanger, cooler, first solution pump, second solution pump, refrigerant pump; Wherein, The concentrated solution district of the bottom of absorber connects the bottom of generator respectively through first solution pump, second solution pump and solution heat exchanger; The input of cooler connects the bottom of generator through solution heat exchanger, and the output termination of cooler is positioned at the spray thrower on absorber top;
Evaporative freezing ice making module is made up of condenser, water replanishing device, choke valve, evaporative freezing chamber, one-tenth ice production apparatus, frozen water separator, one-way cock, middle ice storage appts., one-way cock, ice machine bin; The concentrated solution district of condenser connects the evaporative freezing chamber through choke valve, and the output order of evaporative freezing chamber connects ice machine bin through one-way cock, middle ice storage appts., one-way cock; The output order of cooling tower bottom is got back to the input on cooling tower top through water pump, absorber, condenser.
In the evaporative freezing chamber, the concentrated solution district of bottom, evaporative freezing chamber connects the spray thrower that is positioned at top, evaporative freezing chamber through refrigerant pump, is provided with into ice production apparatus in the spray thrower bottom, is provided with the frozen water separator in the bottom that becomes ice production apparatus.
The method of producing fluid state ice of the fluid state ice device for making based on lithium bromide absorbing type refrigeration circulation of the present invention; For; The concentrated solution of absorber is delivered in the generator through solution heat exchanger through solution pump; The weak solution that takes place in the generator to end gets into absorber through solution heat exchanger and cooler under the differential pressure effect between generator and absorber, form solution circulating; In the evaporation ice making flow process; Water replanishing device is to the condenser moisturizing; The water of condenser gets into evaporation evaporative freezing chamber through choke valve, becomes the mixture of ice and water that forms on the ice production apparatus to get into ice machine bin through frozen water separator, one-way cock, middle storage chamber, one-way cock in the evaporation evaporative freezing chamber and accomplishes the ice making flow process.
This method utilizes the concentrated solution in the absorber to absorb the steam in the evaporation evaporative freezing chamber, makes environment under low pressure for evaporation evaporative freezing chamber, and water evaporates the absorption self heat therein, is becoming on the ice production apparatus to grow into fluid state ice.
The frozen water separation process of this method is to become the ice crystal that forms on the ice production apparatus to separate through the frozen water separator; Uniform pressure in maintenance and the evaporation evaporative freezing chamber in the middle ice storage appts.; Open one-way cock and get into middle storage chamber; Close one-way cock then, open the one-way cock ice crystal and get into ice machine bin, accomplish the frozen water separation process; Accomplish the frozen water after separating, middle storage chamber is vacuumized through vavuum pump.
Beneficial effect:
1, the method can utilize industrial exhaust heat, solar energy equitemperature be thermal source about 100 ℃ as the drive energy of generator, saved a large amount of electric energy, realized the sustainable development of using energy source.
2, this device can directly be formed by the lithium bromide absorption refrigeration plant modification, and simple structure is stable, can overcome machinery and bleed and make that the vacuum wearing and tearing are big, noise is big, the shortcoming of operation difficulty continuously.
3, this method and device are that producing of fluid state ice provides a kind of feasible method and scheme, only need the absorption type refrigerating unit that technology is very ripe transform and upgrade and can realize.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein have: generator 1, condenser 2, water tank 3, choke valve 4, evaporative freezing chamber 5; Become ice production apparatus 6, frozen water separator 7, middle ice storage appts. 8, ice machine bin 9, absorber 10; Solution heat exchanger 11, the first one-way cocks 12, second one-way cock 13, cooling tower 14, cooler 15, the first solution pumps 16, second solution pump 17, refrigerant pump 18; Water pump 19, vavuum pump 20, thermal source add hot fluid 21, moisturizing choke valve 22.
The specific embodiment
This device is made up of solution circulating and evaporative freezing ice making module; Solution circulating comprises generator 1, absorber 10, solution heat exchanger 11, cooler 15, first solution pump 16, second solution pump 17, refrigerant pump 18; Evaporative freezing ice making module by condenser 2, water replanishing device 3, choke valve 4, evaporative freezing chamber 5, connect water replanishing device 3 and evaporative freezing chamber 5 moisturizing choke valve 22, become ice production apparatus 6, frozen water separator 7, one-way cock 12, middle ice storage appts. 8, one-way cock 13, ice machine bin 9 to constitute; Condensed water in the condenser 2 connects evaporative freezing chamber 5 through choke valve 4, and the output order of evaporative freezing chamber 5 connects ice machine bin 9 through one-way cock 12, middle ice storage appts. 8, one-way cock 13.
In evaporative freezing chamber 5, the cryogen pool of 5 bottoms, evaporative freezing chamber connects the spray thrower that is positioned at 5 tops, evaporative freezing chamber through refrigerant pump 18, is provided with into ice production apparatus 6 in the spray thrower bottom, is provided with frozen water separator 7 in the bottom that becomes ice production apparatus 6.
Produce the method for fluid state ice based on the evaporative freezing of lithium-bromide solution Absorption Cooling System, comprise that solution circulation and evaporative freezing get two processes of fluid state ice.Its concrete scheme is following:
Solution circulation during lithium-bromide solution cyclic process and traditional lithium bromide absorbing type refrigeration circulate is similar, adopts solution in absorber, to absorb the steam in the evaporation evaporative freezing chamber, to keep the state of low water vapor pressure in the evaporative freezing chamber; Be lower than 622.8Pa (the saturated pressure phase transition that 0 ℃ water is corresponding); Diluted concentration reduces behind the solution absorption moisture, and bromize lithium dilute solution is heated regeneration through solution pump in generator; Concentration is improved, and recovers to absorb the ability of steam again.It is that concentrated solution constantly absorbs the steam that evaporimeter comes out and causes the environment under low pressure (being lower than 622.8Pa) of evaporative freezing chamber in the absorber that the fluid state ice process is produced in evaporative freezing; Subcooled water in the condenser is through getting into the evaporative freezing chamber after the throttling; Because the evaporative freezing room pressure is lower than the corresponding pressure phase transition 622.8Pa of 0 ℃ of water, the indoor water of evaporative freezing will constantly evaporate the heat that absorbs self, and temperature is reduced to 0 ℃ gradually; Even be lower than 0 ℃; Becoming on the ice production apparatus to generate fluid state ice through separating cold, and, isolating fluid state ice through the frozen water separator of a fixed structure; The chilled water of bottom, evaporative freezing chamber constantly is sprayed onto on the ice production apparatus, forms ice crystal or ice pellets gradually.Along with the continuous minimizing of moisture in the ice making circulation, through side adds water replanishing device in the evaporative freezing chamber.
In the evaporation ice making flow process; Water replanishing device 3 requires automatic water supplement in evaporative freezing chamber 5 according to the lowest water level in the evaporative freezing chamber 5; Get in the evaporative freezing chamber 5 after the normal-temperature water process moisturizing choke valve 22 throttling step-downs in the moisturizing process in the water replanishing device 3; The water of condenser gets into evaporation evaporative freezing chamber 5 through choke valve 4, becomes the mixture of ice and water that forms on the ice production apparatus 6 to get into ice machine bin 9 through frozen water separator 7, one-way cock 12, middle storage chamber 8, one-way cock 13 in the evaporation evaporative freezing chamber 5 and accomplishes the ice making flow process.
The steam that the present invention will go out through the generator that thermal source more than 100 ℃ drives gets into condenser; Lithium-bromide solution concentration after the generation gets a promotion; Through being sprayed onto in the absorber after heat exchanger, the water quench; Absorption is from the steam in the evaporative freezing chamber; Absorption process steam becomes the heat of liquid release by taking away from the cooling water in the cooling tower, absorbs the lithium-bromide solution concentration that ends and reduces, and delivers to through over-heat-exchanger through solution pump then and accomplishes the solution generating process in the generator.In condenser, pass through water quench from the steam in the generator from cooling tower; Be condensed into subcooled water; Then through being sprayed to the evaporative freezing chamber after the throttling arrangement throttling; Evaporation and be frozen into ice crystal on the one-tenth ice production apparatus in the evaporative freezing chamber is evaporated the steam that and is absorbed in the device concentrated solution and absorbs, and keeps the indoor environment under low pressure of evaporative freezing.In order to prevent in this system that moisture constantly becomes after the ice pellets, the moisture in the circulation reduces, in due course through water replanishing device in condenser supplementing water to keep the water yield in the systemic circulation.When the ice crystal in the frozen water separator in the evaporative freezing chamber gather a certain amount of after, open the one-way cock between evaporative freezing chamber and middle ice storage appts., ice crystal under the gravity effect, get in the middle of ice storage appts., close this one-way cock then.When the ice crystal in the middle ice storage appts. reach a certain amount of after, the one-way cock in the middle of opening between ice storage appts. and the ice machine bin is taken the ice crystal or the ice pellets of generation away, closes one-way cock then, the certain vacuum of ice storage appts. in the middle of the open vacuum pump guarantees.
Claims (5)
1. fluid state ice device for making based on lithium bromide absorbing type refrigeration circulation is characterized in that this device is made up of solution circulating and evaporative freezing ice making module; Solution circulating comprises generator (1), absorber (10), solution heat exchanger (11), cooler (15), first solution pump (16), second solution pump (17); Wherein, The concentrated solution district of the bottom of absorber connects the bottom of generator respectively through first solution pump, second solution pump and solution heat exchanger; The input of cooler connects the bottom of generator through solution heat exchanger, and the output termination of cooler is positioned at the spray thrower on absorber top; Evaporative freezing ice making module by condenser (2), water replanishing device (3), choke valve (4), evaporative freezing chamber (5), connect water replanishing device (3) and evaporative freezing chamber (5) moisturizing choke valve (22), become ice production apparatus (6), frozen water separator (7), first one-way cock (12), middle ice storage appts. (8), second one-way cock (13), ice machine bin (9), refrigerant pump (18) formation; Condensed water in the condenser (2) connects evaporative freezing chamber (5) through choke valve (4), and the output of evaporative freezing chamber (5) connects ice machine bin (9) through first one-way cock (12), middle ice storage appts. (8), second one-way cock (13) in proper order.
2. the fluid state ice device for making based on the lithium bromide absorbing type refrigeration circulation according to claim 1; It is characterized in that; In evaporative freezing chamber (5); The cryogen pool of bottom, evaporative freezing chamber (5) connects the spray thrower that is positioned at top, evaporative freezing chamber (5) through refrigerant pump (18), is provided with into ice production apparatus (6) in the spray thrower bottom, is provided with frozen water separator (7) in the bottom that becomes ice production apparatus (6).
3. the method for producing fluid state ice of the fluid state ice device for making based on lithium bromide absorbing type refrigeration circulation as claimed in claim 1; It is characterized in that; In the evaporation ice making flow process; Water replanishing device (3) requires automatic water supplement in evaporative freezing chamber (5) according to the lowest water level in evaporative freezing chamber (5); Get in the evaporative freezing chamber (5) after normal-temperature water process moisturizing choke valve (22) the throttling step-down in the water replanishing device in the moisturizing process (3); The water of condenser gets into evaporative freezing chamber (5) through choke valve (4), and the mixture of ice and water that becomes ice production apparatus (6) to go up formation in evaporative freezing chamber (5) gets into ice machine bin (9) through frozen water separator (7), first one-way cock (12), middle storage chamber (8), second one-way cock (13) and accomplishes the ice making flow process.
4. the method for producing fluid state ice of the fluid state ice device for making based on lithium bromide absorbing type refrigeration circulation according to claim 3; It is characterized in that this method utilizes the concentrated solution in the absorber (10) to absorb the steam in the evaporative freezing chamber (5); For environment under low pressure is made in evaporative freezing chamber (5); Water evaporates the absorption self heat therein, is becoming on the ice production apparatus (6) to grow into fluid state ice.
5. the system of the fluid state ice device for making based on lithium bromide absorbing type refrigeration circulation according to claim 3
Get the method for fluid state ice, the frozen water separation process that it is characterized in that this method is to become ice production apparatus (6) to go up formation
Ice crystal separate through frozen water separator (7), keep in the middle ice storage appts. (8) with the evaporative freezing chamber in
Uniform pressure is opened one-way cock (12), and ice storage appts. (8) in the middle of described ice crystal gets under the gravity effect is closed first one-way cock (12) then, opens second one-way cock (13) ice crystal and gets into ice machine bin, accomplishes the frozen water separation process; Accomplish the frozen water after separating, middle ice storage appts. (8) is vacuumized through vavuum pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100237371A CN102062507B (en) | 2011-01-21 | 2011-01-21 | Flow ice making method and device based on lithium bromide absorption type refrigeration cycle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100237371A CN102062507B (en) | 2011-01-21 | 2011-01-21 | Flow ice making method and device based on lithium bromide absorption type refrigeration cycle |
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| CN102062507A CN102062507A (en) | 2011-05-18 |
| CN102062507B true CN102062507B (en) | 2012-07-18 |
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| CN2011100237371A Expired - Fee Related CN102062507B (en) | 2011-01-21 | 2011-01-21 | Flow ice making method and device based on lithium bromide absorption type refrigeration cycle |
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| CN102538331B (en) * | 2012-03-30 | 2013-12-18 | 常熟南师大发展研究院有限公司 | Method and device for fetching out flow-state ices from vacuum process flow-state ice preparing room |
| CN107014124A (en) * | 2017-04-21 | 2017-08-04 | 高志栋 | A kind of ice making method and ice-making system |
| CN107162344B (en) * | 2017-07-03 | 2020-10-02 | 苏州华商新能源有限公司 | Sewage treatment method |
| CN107726684A (en) * | 2017-11-01 | 2018-02-23 | 江苏高菱蓄能科技有限公司 | A kind of droxtal slurry preparation system |
| CN108592444B (en) * | 2018-02-06 | 2023-10-31 | 华北电力大学 | Heat exchange unit combining electric heat pump and absorption heat pump |
| CN109282397B (en) * | 2018-08-14 | 2020-06-19 | 浙江理工大学 | Novel energy storage air conditioning device and method based on air compression refrigeration cycle |
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| JP3094781B2 (en) * | 1994-04-07 | 2000-10-03 | 日本鋼管株式会社 | Vacuum ice making equipment |
| CN1117254C (en) * | 2000-09-14 | 2003-08-06 | 东南大学 | Environment protection type energy-saving efficient air conditioner using solution to accumualte energy |
| WO2008062438A2 (en) * | 2006-08-31 | 2008-05-29 | Thermax Limited | Method and apparatus for generating ice slurry |
| CN200986354Y (en) * | 2006-12-26 | 2007-12-05 | 上海海事大学 | Vacuum freezing steam absorbing type binary ice preparing device |
| CN201589481U (en) * | 2009-09-25 | 2010-09-22 | 天津商业大学 | Fluidizing ice making system by utilizing seawater |
| CN201992924U (en) * | 2011-01-21 | 2011-09-28 | 东南大学 | Ice-slurry preparing device based on lithium bromide absorption refrigeration cycle |
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