CN201209974Y - Novel film distillation backheating absorption refrigerating plant - Google Patents
Novel film distillation backheating absorption refrigerating plant Download PDFInfo
- Publication number
- CN201209974Y CN201209974Y CNU2008200575051U CN200820057505U CN201209974Y CN 201209974 Y CN201209974 Y CN 201209974Y CN U2008200575051 U CNU2008200575051 U CN U2008200575051U CN 200820057505 U CN200820057505 U CN 200820057505U CN 201209974 Y CN201209974 Y CN 201209974Y
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- solution
- mass transfer
- generator
- film
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility discloses a film distillation backheating absorption type refrigeration device, relating to refrigeration technology field, comprising a generator, a condenser, a throttling device, an evaporator, a cooling medium pump, a absorbing device, a solution pump, and solution heat exchanger characterized in that a film distillation mass transfer heat exchanger is disposed between the generator and solution heat exchanger, film distillation mass transfer forms a certain steam pressure difference between hot side and cold side for achieving back heat process. The film distillation backheating absorption type refrigeration device of the utility has merits of largely reducing demand for drive heat source temperature, promoting greatly for refrigeration coefficient, simplifying the absorption type refrigeration device, promoting manufacture technique and performance.
Description
Technical field
The utility model relates to refrigeration technology field, specifically is a kind of new membrane distillation backheating absorption type refrigerator.
Background technology
The fast development of sorption type refrigerating technology is inseparable with current research for the energy and environmental issue, existing research focus has both direction, the firstth, the sorption type refrigerating technology of low-grade heat source (as: solar energy or used heat) driving heat source, this class technology all is on the basis of two-stage absorption circulation flow process to be done some to improve the refrigerating efficiency that improves system; The secondth, the high-efficiency absorption Refrigeration Technique, main research multiple-effect Absorption Cooling System, research injection, absorption, supercharging and the circulation of absorption compound-refrigerating, and the research of Absorption Cooling System working medium, the backheat of Absorption Cooling System and heat and mass are strengthened research, and these researchs all are to be based upon on the basis of traditional single-effective absorption kind of refrigeration cycle.
Traditional single-effective absorption refrigerating theory circulation is made up of isobaric cooling and absorbing, isobaric heating generation and isoconcentration heat recovery process, and wherein heat recovery process is realized by heat exchanger.This makes occurrence temperature higher, thereby be lower than 85 ℃ low-grade heat source for temperature and have only to absorb and could realize freezing by two-stage, and the occurrence temperature that the high pressure generator of multiple-effect machine can be had relatively high expectations, thereby brought the pyrosol corrosion, problems such as pyrosol surfactant and corrosion inhibiter inefficacy and high-pressure control, these problems are the commercial major obstacles of triple effect machine.
In order to address these problems, in recent years, more advanced membrane separation technique has had significant progress, the commercialization of some of them membrane separation technique.Film distillation (MD, Membrane Distillation) technology is exactly wherein a kind of, it casts aside the function of its " separation ", essence be exactly in a kind of solution volatile component vaporize at the film hydrophobic surface, and pass the mass-and heat-transfer technology of fenestra in the opposite side condensation of film, the driving force of mass transfer is exactly the saturated vapor pressure reduction of film both sides solution.
For the retrieval of prior art, some patents have appearred in the membrane separation technique application on Absorption Refrigerator.As: " the membrane separating sorption type refrigerating technology " of Wang Jinghua, Chinese patent ZL02140485.2; The good bright man in palace " membrane separation device and the Absorption Refrigerator that utilizes film to separate ", TOHKEMY 2003-144855; " lithium-bromide absorption-type refrigerating machine of membrane separation concentrating solution " of Xuan Baimin, Chinese patent ZL200510048937.7.These patents all be the membrane separation device simple application in Absorption Cooling System, replace the generator in the original system, wherein the former usefulness is film distillation technology, drive with thermal source, what afterwards both adopted is infiltrate membrane technology, and with driven by power, osmotic pressure will be greater than 300kgf/cm2, generally adopt multistage infiltration with the reduction osmotic pressure, but also make complex system simultaneously.Be not difficult to find out the direction of this scheme incompatibility sorption type refrigerating technology in the UTILIZATION OF VESIDUAL HEAT IN development.The driving force of film distillation is that separated component is poor at the steam pressure of film both sides in the solution.For lithium-bromide absorption-type refrigerating machine, have only the one pack system material to be evaporated in the generator, (depend on cooling water temperature at film cold side steam pressure, depend on the low pressure generator operating temperature for economic benefits and social benefits circulations) under the situation that do not become, adopt the film distillation owing to exist the steam pressure difference of film both sides only can improve the generation pressure and temperature of generator.Although the application of first patent can make the surface area increase takes place, the steam pressure difference of film both sides also can increase, and this might reduce the thermal performance of lithium-bromide absorption-type refrigerating machine group.However, the beginning that membrane technology is used has been dug in the proposition of these patents in absorption type refrigerating unit.
The utility model content
Technical problem to be solved in the utility model provides a kind of new membrane distillation backheating absorption type refrigerator.New circulation reduces greatly to the requirement of driving heat source temperature, can adopt the unserviceable low-grade exhaust heat of traditional Absorption Cooling System to drive, for the low-grade heat source that is lower than 80 ℃, the tradition Absorption Cooling System needs to absorb the purpose that just can reach refrigeration with two-stage, and new circulation adopts the single-stage single-action just can realize.
In order to realize the technical scheme of above-mentioned technical problem employing:
A kind of new membrane distillation backheating absorption type refrigerator, comprise generator, condenser, throttling arrangement, evaporimeter, cryogenic fluid pump, absorber, solution pump and solution heat exchanger is characterized in that: film distillation mass transfer heat exchanger is set between described generator and the solution heat exchanger, described film distillation mass transfer heat exchanger forms certain steam pressure difference for hot side and the cold side solution that distills the film of mass transfer heat exchanger at described film, thereby realizes the heat exchanger of backheat.
Film distillation mass transfer forms certain steam pressure difference at the hot side and the cold side solution of the film of described film distillation mass transfer heat exchanger, realizes heat recovery process, and under perfect condition, the process of solution becomes concentration is isobaric process.
Described bottom at generator connects a pipeline, pipeline is through entering into described absorber after described film distillation mass transfer heat exchanger and the solution heat exchanger, solution pump is installed in bottom at described absorber, connects a pipeline on the solution pump through being connected the upper end of described generator after described film distillation mass transfer heat exchanger and the solution heat exchanger.
Also be connected to a pipeline at the top of described generator and be connected with condenser, the top that the bottom of described condenser is connected to a pipeline and evaporimeter is connected.
Described throttling arrangement is installed on the pipeline between condenser and the evaporimeter, and cryogenic fluid pump is installed in the bottom of described evaporimeter.
Described top between absorber and evaporimeter is connected by pipeline.
A driving heat source device is set in described generator is used to keep solution constant temperature.
Flow through cooling water in described condenser, the refrigerant vapour that is used for generator is taken place is in the condenser condensation.
Described cold-producing medium by spray eruption in the cryogenic fluid pump flows through chilled water.
The utility model in the principle in when work is: described device is during for the mono-potency lithium bromide Absorption Cooling System, the concentrated solution of coming out from generator flow through successively film distillation mass transfer heat exchanger and solution heat exchanger, through concentrating and cooling, enter absorber then, concentrated solution absorbs the water vapour of coming from evaporimeter through spray, become weak solution, the solution pump that is absorbed the device bottom is drawn, successively by solution heat exchanger and film distillation mass transfer heat exchanger, dilute and heat up, pump into generator then.
Described device is during for single-action ammonia absorption type kind of refrigeration cycle, the weak solution of coming out from generator flow through successively film distillation mass transfer heat exchanger and solution heat exchanger, through dilution and cooling, enter absorber then, weak solution absorbs the ammonia steam of coming from evaporimeter through spray, becomes concentrated solution, drawn by solution pump, behind solution heat exchanger and film distillation mass transfer heat exchanger, concentrate and heat up, pump into generator then.The refrigerant vapour that takes place in generator condensation in condenser enters the evaporimeter spray by throttling arrangement, and cryogenic fluid pump makes the cold-producing medium circulated sprinkling evaporation in the evaporimeter.
The utility model is incorporated into film distillation technology in the heat recovery process of single-effective absorption kind of refrigeration cycle, and (saturated vapor pressure reduction is zero, is similar to zero different transfer of heat, does not have the solid conductive heat by film) in the ideal case, heat recovery process is the constant temperature process of solution becomes concentration.In Fig. 2, Fig. 3, from the logP-1/T figure of ammonia spirit and the Di Lintu of lithium bromide water solution, traditional single-effective absorption kind of refrigeration cycle is a circulation that is similar to parallelogram, and the new circulation that proposes in this device is the circulation of a rectangle, both compare and are not difficult to learn, the generating process of new circulation moves to low-temperature space.Refrigerant vapour generation initial temperature equals to absorb final temperature in new circulation, final temperature takes place equal to absorb initial temperature.And absorb final temperature only a little more than 5 ~ 8 ℃ of absorber cooling water temperatures, and if cooling water temperature is 32 ℃, then in the ideal case, generator can just can be started working under the temperature about 40 ℃, this is significant for utilizing of low grade heat energy.
The new circulation that the utility model produces has following advantage:
1) requirement to the driving heat source temperature reduces greatly.Can utilize the unserviceable low-grade exhaust heat of traditional Absorption Cooling System.
2) coefficient of refrigerating performance improves greatly.For the low-grade heat source that is lower than 80 ℃, traditional Absorption Cooling System needs to absorb the purpose that just can reach refrigeration with two-stage, and new circulation adopts the single-stage single-action just can realize.Existing lithium-bromide absorption-type refrigerating machine, under the temperature-resistant situation of driving heat source, after parallel connection or one or more new circulation of connecting, single-action can change economic benefits and social benefits into, and economic benefits and social benefits can change triple effect into, and n is imitated and can be changed the n+1 effect into.
3) absorption refrigeration equipment will obtain simplifying, and anufacturability is improved.Traditional two-stage absorption refrigeration circulation can be by single-stage single-action replacements that newly circulate, and ammonia absorption refrigeration newly circulates, and improves greatly because concentration takes place, and can save the rectifier unit that the tradition circulation is used always.
Description of drawings
Fig. 1 is the utility model operation principle schematic diagram.
Fig. 2 is traditional single-effective absorption refrigeration solution circulation schematic diagram.
Fig. 3 is the utility model film distillation mass transfer backheat single-effective absorption refrigeration solution circulation schematic diagram.
Fig. 4 is the hot single-effective absorption refrigeration of a utility model solution circulation schematic diagram.
Fig. 5 is the utility model single-effective absorption refrigeration solution circulation schematic diagram.
The specific embodiment
In order to understand the technical solution of the utility model better, be described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of new membrane distillation backheating absorption type refrigerator, by generator 1, condenser 2, throttling arrangement 3, evaporimeter 4, cryogenic fluid pump 5, absorber 6, solution pump 7 and solution heat exchanger 8 constitute, film distillation mass transfer heat exchanger 9 is installed between generator 1 and solution heat exchanger 8, is connected by pipeline between film distillation mass transfer interchanger 9 and generator 1, the solution heat exchanger 8.The bottom sealing pipe laying of generator 1, after pipeline distills mass transfer heat exchanger and solution heat exchanger through film, the termination is installed in the inside of absorber 6, solution pump 7 is installed in bottom at absorber 6, on the solution pump 7 return is installed, solution pump 7 comes back to the flow of solution in the absorber 6 in the generator 1 through film distillation mass transfer heat exchanger and solution heat exchanger.The top of generator 1 is also installed between a pipeline and the condenser 2 and is connected, and the top that the bottom of condenser 2 is connected to pipeline and evaporimeter 4 is connected.Throttling arrangement 3 is installed on the pipeline between condenser 2 and the evaporimeter 4, and cryogenic fluid pump 5 is installed in the bottom of evaporimeter 4.
Install the driving heat source device in the centre of generator 1, flow through cooling water in the condenser 2, by the cold-producing medium of spray eruption in the cryogenic fluid pump 5, flow through chilled water, cooling water is connected with outside equipment by pipeline with chilled water.
In Fig. 1 in order to finish the mono-potency lithium bromide Absorption Cooling System: the concentrated solution of coming out from generator 1 flow through successively film distillation mass transfer heat exchanger 9 and solution heat exchanger 8, through concentrating, lowering the temperature, enter absorber then, the concentrated solution spray absorbs the water vapour of coming from evaporimeter 4, becomes weak solution.After solution pump 7 is drawn weak solution from absorber,, dilute, heat up, pump into generator 1 then by solution heat exchanger 8 and film distillation mass transfer heat exchanger 9.
In Fig. 1 in order to finish single-action ammonia absorption type kind of refrigeration cycle: the weak solution of coming out from generator 1 flow through successively solution film distillation mass transfer heat exchanger 9 and solution heat exchanger 8, through dilution, cooling, enter absorber then, the weak solution spray absorbs the ammonia steam of coming from evaporimeter 4, becomes concentrated solution.Solution pump 7 is drawn concentrated solution from absorber, by solution heat exchanger 8 and solution film distillation mass transfer heat exchanger 9, concentrate, heat up, pump into then in the generator 1, the refrigerant vapour condensation in condenser 2 that produces in the generator 1, enter evaporimeter 4 sprays by throttling arrangement 3, cryogenic fluid pump 5 evaporates the cold-producing medium circulated sprinkling in the evaporimeter 4.
In Fig. 2, the Di Lintu of the logP-1/T of ammonia spirit figure and lithium bromide water solution, traditional single-effective absorption kind of refrigeration cycle is a circulation that is similar to parallelogram.
In Fig. 3, the Di Lintu of the logP-1/T of ammonia spirit figure and lithium bromide water solution, new circulation is the circulation of a rectangle, the generating process of new circulation moves to low-temperature space.
In Fig. 4, film is distilled the mass transfer backheat regard the combination that is that hot side solution takes place and cold side solution absorbs as, then film distills mass transfer backheating absorption type kind of refrigeration cycle and can think infinite multistage single-effective absorption kind of refrigeration cycle.
According to the mechanism of film distillation mass transfer, the driving force of its film distillation mass transfer is the steam pressure difference of film both sides solution, considers the heat transfer of film both sides solution by film, and film distillation mass transfer backheating absorption type kind of refrigeration cycle as shown in Figure 5.
A-B and C-D are film distillation mass transfer among the figure, and B-B ' and D-D ' are the solution heat exchanger backheat.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a new membrane distillation backheating absorption type refrigerator comprises generator, condenser, and throttling arrangement, evaporimeter, cryogenic fluid pump, absorber, solution pump and solution heat exchanger is characterized in that:
One film distillation mass transfer heat exchanger is set between described generator and the solution heat exchanger, and described film distillation mass transfer heat exchanger forms certain steam pressure difference for hot side and the cold side solution that distills the film of mass transfer heat exchanger at described film, thereby realizes the film heat exchanger of backheat.
2. new membrane distillation backheating absorption type refrigerator according to claim 1, it is characterized in that, connect a pipeline in the bottom of described generator, described pipeline is through being linked in the described absorber after described film distillation mass transfer heat exchanger and the solution heat exchanger, solution pump is installed in bottom at described absorber, connects a pipeline on the described solution pump through being connected the upper end of described generator after described film distillation mass transfer heat exchanger and the solution heat exchanger.
3. new membrane distillation backheating absorption type refrigerator according to claim 1 is characterized in that, also is connected to a pipeline at the top of described generator and is connected with described condenser, and the top that the bottom of described condenser is connected to a pipeline and evaporimeter is connected.
4. new membrane distillation backheating absorption type refrigerator according to claim 1 is characterized in that, a driving heat source device that is used to keep solution constant temperature is set in described generator.
5. new membrane distillation backheating absorption type refrigerator according to claim 1 is characterized in that: described film distillation mass transfer heat exchanger is the film separated device of a direct contact type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200575051U CN201209974Y (en) | 2008-04-21 | 2008-04-21 | Novel film distillation backheating absorption refrigerating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200575051U CN201209974Y (en) | 2008-04-21 | 2008-04-21 | Novel film distillation backheating absorption refrigerating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209974Y true CN201209974Y (en) | 2009-03-18 |
Family
ID=40480712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200575051U Expired - Lifetime CN201209974Y (en) | 2008-04-21 | 2008-04-21 | Novel film distillation backheating absorption refrigerating plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209974Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677013A (en) * | 2017-10-13 | 2018-02-09 | 中国科学院理化技术研究所 | Continuous alternating temperature distillation generator and Absorption heat-transformer system |
| CN109099611A (en) * | 2018-07-03 | 2018-12-28 | 东南大学 | It is a kind of to reduce the absorption-type refrigerating method and device that temperature occurs |
| CN113865140A (en) * | 2021-10-11 | 2021-12-31 | 中国科学技术大学 | Two-step method air carrying tritium-containing wastewater system with energy storage function |
-
2008
- 2008-04-21 CN CNU2008200575051U patent/CN201209974Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677013A (en) * | 2017-10-13 | 2018-02-09 | 中国科学院理化技术研究所 | Continuous alternating temperature distillation generator and Absorption heat-transformer system |
| CN109099611A (en) * | 2018-07-03 | 2018-12-28 | 东南大学 | It is a kind of to reduce the absorption-type refrigerating method and device that temperature occurs |
| CN109099611B (en) * | 2018-07-03 | 2021-04-27 | 东南大学 | Absorption type refrigeration method and device for reducing generation temperature |
| CN113865140A (en) * | 2021-10-11 | 2021-12-31 | 中国科学技术大学 | Two-step method air carrying tritium-containing wastewater system with energy storage function |
| CN113865140B (en) * | 2021-10-11 | 2022-12-30 | 中国科学技术大学 | Two-step method air carrying tritium-containing wastewater system with energy storage function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101963412B (en) | Solar energy and electric energy combined heat pump system and cooling and heating method | |
| CN102155813B (en) | Thermochemical absorption and refrigeration device driven by condensation heat of air conditioning unit | |
| CN1303378C (en) | Combined circulating device capable of realizing absorption type cycle and organic matter Rankine cycle | |
| CN201819480U (en) | High-efficiency and energy-saving heat pump device | |
| CN106123395B (en) | Novel heating station system having both large-temperature-difference heat exchange and concentrated heat refrigeration functions | |
| CN101968288A (en) | Absorption-compression composite refrigeration cycle system | |
| CN201844606U (en) | Novel high-efficiency and direct-fired lithium bromide absorption-type water heater/chiller | |
| CN101344342B (en) | Film distillation backheating absorption type refrigerator | |
| CN101871702B (en) | Double heat source high-efficiency absorption refrigerating plant | |
| CN201209974Y (en) | Novel film distillation backheating absorption refrigerating plant | |
| CN101603745B (en) | Pressure-boosting absorptive-type auto-cascade absorption refrigeration circulating system | |
| CN109350983B (en) | Double-stage compression type heat pump double-effect evaporation concentration system | |
| CN100445670C (en) | Absorption mode refrigerator of hot water type lithium bromide between single action and two stages | |
| CN201218626Y (en) | Medium-temperature solar energy-driving and cold-hot bidirectional-utilizing third-kind absorption heat pump | |
| CN102679623A (en) | Ammonia-water-absorption water refrigerating and heating system device | |
| CN101995112B (en) | High-efficient gaseous oxygen (GAX) absorption refrigeration device | |
| CN200986345Y (en) | Hot-water type lithium bromide absorbing refrigerator between single effect and two stage | |
| CN104482690B (en) | A kind of absorption geothermal heat pump utilizing solar heat to drive | |
| CN1227489C (en) | Solar plate heat and cold supplier and its liquid circulation method | |
| CN110542241B (en) | Single-double effect composite steam-absorption two-section type first lithium bromide absorption heat pump unit | |
| CN101187510A (en) | Triple effect absorption type refrigeration system | |
| CN102798247B (en) | Low-grade-energy drive CO2 absorption refrigeration system | |
| CN113091349A (en) | High-efficient absorption heat pump | |
| CN202403442U (en) | Small absorption refrigeration device | |
| CN113701393B (en) | Solar single/double-effect switching absorption refrigeration system adopting membrane accumulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090318 Effective date of abandoning: 20080421 |