CN104048441A - Improved adsorption type heat pump and adsorption-desorption method of improved adsorption type heat pump - Google Patents
Improved adsorption type heat pump and adsorption-desorption method of improved adsorption type heat pump Download PDFInfo
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- CN104048441A CN104048441A CN201410235911.2A CN201410235911A CN104048441A CN 104048441 A CN104048441 A CN 104048441A CN 201410235911 A CN201410235911 A CN 201410235911A CN 104048441 A CN104048441 A CN 104048441A
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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]
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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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- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses an improved adsorption type heat pump. The improved adsorption type heat pump comprises a first adsorption bed, a second adsorption bed, a condenser, an evaporator, a first vacuum booster pump and a second vacuum booster pump, wherein one end of the first adsorption bed passes through a first valve and the first vacuum booster pump and is connected with the condenser through a pipeline; the other end of the first adsorption bed passes through a fourth valve and the second vacuum booster pump and is connected with the evaporator through a pipeline; one end of the second adsorption bed is connected with a second valve through a pipeline, is connected to a pipeline between the first valve and the first vacuum booster pump and is connected with the condenser through the first vacuum booster pump; the other end of the second adsorption bed is connected with a third valve through a pipeline, is connected to a pipeline between the fourth valve and the second vacuum booster pump and is connected with the evaporator through the second vacuum booster pump. According to the improved adsorption type heat pump, the effective adsorption amount of an adsorbent adsorption/desorption process can be improved and the refrigeration effect of the adsorption type heat pump is improved.
Description
Technical field
What the present invention relates to is a kind of adsorption type heat pump of Novel belt vacuum gooster pump and adopts this adsorption type heat pump to carry out the method for adsorption-desorption, belongs to adsorptive refrigeration technology field.
Background technology
At present, China's industrial exhaust heat utilization rate is lower, and especially low-grade industrial exhaust heat, because heat density is little, reclaims benefit not high, basic directly discharge, and energy waste is serious; How solar energy, as clean, cheap regenerative resource, realizes efficient utilization, significant aspect alleviation energy shortage.Adsorption type heat pump can utilize 60 DEG C of above low grade heat energies such as industrial exhaust heat, solar energy to produce cold, with refrigeration heat, substitute common voltage contracting formula air-conditioning, save air conditioner refrigerating power consumption, having important energy-saving and emission-reduction meaning, is also the efficient important measures that utilize of low grade heat energy.
Adsorption type heat pump is generally made up of adsorbent bed, evaporimeter, condenser and pipeline and valve, and its course of work comprises Process of Adsorption and desorption condensation process.Adsorption type heat pump is simple in structure, can be for places such as vibrations, inclinations, and compared with Absorption Refrigerator, range of application is more extensive.But, common adsorption type heat pump relies on merely the pressure differential between adsorbent bed and evaporator/condenser to promote cold-producing medium and moves in whole system, deposit that the effective adsorbance of adsorbent is less in the course of the work, cause the problems such as equipment output refrigeration work consumption is low, coefficient of performance of refrigerating (COP) is little, have a strong impact on the performance of adsorption type heat pump.
Summary of the invention
For above deficiency, one of object of the present invention is to provide a kind of adsorption type heat pump with vacuum gooster pump, can improve effective adsorbance of adsorbent absorption/desorption process, and then improves adsorption type heat pump effect.
For realizing above object, the technical scheme that the present invention takes is:
A kind of modified adsorption type heat pump, is characterized in that, comprises the first adsorbent bed, the second adsorbent bed, condenser, evaporimeter, the first vacuum gooster pump and the second vacuum gooster pump; Wherein one end the first valve, first vacuum gooster pump of the first adsorbent bed are connected with condenser by pipeline, form one first loop; The other end of the first adsorbent bed is connected with evaporimeter by pipeline through the 4th valve, the second vacuum gooster pump, forms a second servo loop; Second adsorbent bed one end is connected with the second valve by pipeline, and is connected to the pipeline between the first valve and the first vacuum gooster pump, is connected with condenser through the first vacuum gooster pump, forms a tertiary circuit; The other end of the second adsorbent bed is connected with the 3rd valve by pipeline, and is connected to the pipeline between the 4th valve and the second vacuum gooster pump, is connected with evaporimeter through the second vacuum gooster pump, forms one the 4th loop.
Wherein, the first vacuum gooster pump and the second vacuum gooster pump all adopt that quality is light, compact conformation, little power consumption and the large booster pump of compression ratio.
Described the first adsorbent bed, the second adsorbent bed are connected with cooling water system, heat source system respectively, form respectively corresponding water route.
This modified adsorption type heat pump is under refrigeration mode, and described the first vacuum gooster pump is to the supercharging of condenser direction, and described the second vacuum gooster pump is to the first adsorbent bed or/and the second adsorbent bed direction supercharging.
Described the first adsorbent bed is or/and the adsorbent of the second adsorbent bed is any in silica gel, zeolite, active carbon, and its adsorbate is water.
Another object of the present invention is to provide a kind of and adopt above-mentioned modified adsorption type heat pump to carry out the method for adsorption-desorption, to improve effective adsorbance of adsorbent absorption/desorption process, and then improve adsorption type heat pump effect.
For realizing above object, the technical scheme that the present invention takes is:
A kind of modified adsorption type heat pump carries out the method for adsorption-desorption, in the time that adsorbent bed carries out adsorption and desorption process, improve respectively the refrigerant pressure of vaporizer side and adsorbent bed side, increase the pressure differential between evaporimeter and adsorbent bed, adsorbent bed and condenser, be used for increasing modified adsorption type heat pump adsorbent Efficient Cycle amount, so that modified adsorption type heat pump output refrigeration work consumption and COP are effectively promoted.
In the time that adsorbent bed carries out adsorption process, after supercharging, enter in this adsorbent bed and carry out adsorption process from evaporimeter gaseous refrigerant out, to increase the pressure differential between evaporimeter and this adsorbent bed; In the time that adsorbent bed carries out desorption process, after supercharging, enter condenser from this adsorbent bed gaseous refrigerant out and carry out condensation, to increase the pressure differential between this adsorbent bed and condenser.
Adsorbent Efficient Cycle amount has referred to adsorbent adsorbance after adsorption process and the difference that completes adsorbent adsorbance after desorption process, is also the key factor that affect absorption type refrigerating and export refrigeration work consumption, COP.T
h, T
m, T
lbe respectively adsorbent bed desorption temperature, condensation/chilling temperature and cold-producing medium evaporating temperature, P
tH, P
tM, P
tLrespectively correspondence gaseous refrigerant saturated vapor pressure at temperature separately.
for the relative dividing potential drop of desorption process,
for the relative dividing potential drop of adsorption process,
for the relative dividing potential drop scope of adsorption type heat pump work.On adsorbent adsorption isotherm line chart,
corresponding adsorbent adsorbance is q
1,
corresponding adsorbent adsorbance is q
2, both difference Δ q are adsorbent Efficient Cycle amount.The adsorption type heat pump the present invention relates to carries out adsorbent bed desorption process, gaseous refrigerant from adsorbent bed desorption out, after vacuum gooster pump supercharging, then enters condenser and carries out condensation process, wherein the effect of vacuum gooster pump is equivalent to increase the pressure of adsorbent desorption process, i.e. P
tHincrease P
tMconstant, thus cause
reduce; When carrying out adsorbent bed adsorption process, gaseous refrigerant is evaporated from evaporimeter, after vacuum gooster pump supercharging, then carries out adsorbent bed and carries out adsorbent adsorption process, and wherein the effect of vacuum gooster pump is equivalent to increase the pressure of evaporation in evaporimeter, i.e. P
tLincrease P
tMconstant, thus cause
increase.Comprehensive desorption and adsorption process, increase after vacuum gooster pump, can increase
scope, increases cold-producing medium Efficient Cycle amount, and then improves adsorption type heat pump output refrigeration work consumption, under identical equipment volume, and raising equipment output refrigeration work consumption density.Meanwhile, can increase the pressure reduction between adsorbent bed and condenser, evaporimeter and adsorbent bed, improve adsorbent desorption rate and the rate of adsorption, improve adsorbent bed heat and mass transfer performance, improve the COP of adsorption type heat pump.
A kind of band vacuum gooster pump adsorption type heat pump course of work (to freeze as example): in the time that adsorbent bed adsorbs, gaseous refrigerant is evaporated from evaporimeter, after vacuum gooster pump supercharging, enter into adsorbent layer by valve, complete adsorption process; In the time that adsorbent bed carries out desorption, gaseous refrigerant from adsorbent bed desorption out, by valve, vacuum gooster pump, after supercharging, enters into condenser, it is liquid that condensation of refrigerant becomes, liquid back flow of refrigerant is to evaporimeter.By the phase-change heat transfer in evaporimeter, realizing adsorption type heat pump provides the function of cold to the external world.The concrete course of work is: when the first adsorbent bed carries out adsorption process, and the 4th valve opening, gaseous refrigerant is evaporated from evaporimeter, through the second vacuum gooster pump, the 4th valve, enters the first adsorbent bed; Simultaneously the second adsorbent bed carries out desorption process, now the second valve opening, and gaseous refrigerant from desorption in the second adsorbent bed out, through the second valve, the first vacuum gooster pump, enters condenser condenses and becomes liquid refrigerant to be back in evaporimeter.
The present invention compared with prior art, tool has the following advantages: the present invention is by increasing the pressure differential between evaporimeter and adsorbent bed, adsorbent bed and condenser, improve adsorbent Efficient Cycle amount in the adsorption type heat pump course of work, reach the object that improves adsorption type heat pump output refrigeration work consumption and COP; Described adsorption type heat pump structure comprises vacuum gooster pump, can effectively solve the problems such as traditional adsorption type heat pump equipment output refrigeration work consumption density is little, COP is low; Described vacuum gooster pump, quality is light, power consumption is little, on adsorption type heat pump structure, power consumption impact not quite, is conducive to the application of vacuum gooster pump in adsorption type heat pump.
Brief description of the drawings
Fig. 1 a is the structural representation of a kind of modified adsorption type heat pump of the present invention embodiment 1;
Fig. 1 b is the structural representation of a kind of modified adsorption type heat pump of the present invention embodiment 2;
Fig. 2 is silica gel absorption thermoisopleth (25 DEG C).
Wherein: 1, the first valve; 2, the second valve; 3, the 3rd valve; 4, the 4th valve; 5, the first vacuum gooster pump; 6, the second vacuum gooster pump; 7, condenser; 8, evaporimeter; 9, cooling water system; 10, heat source system; 11, the first adsorbent bed; 12, the second adsorbent bed.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, content of the present invention is described in further details.
Embodiment 1
As shown in Figure 1a, a kind of modified adsorption type heat pump, comprises the first adsorbent bed 11, the second adsorbent bed 12, condenser 7, evaporimeter 8, the first vacuum gooster pump 5, the second vacuum gooster pump 6 and related valve; Wherein one end the first valve 1, first vacuum gooster pump 5 of the first adsorbent bed 11 are connected with condenser 7 by pipeline, form a loop; The other end of the first adsorbent bed 11 is connected with evaporimeter 8 by pipeline through the 4th valve 4, the second vacuum gooster pump 6, forms a loop; Second adsorbent bed 12 one end are connected with the second valve 2 by pipeline, and are connected to the pipeline between the first valve 1 and the first vacuum gooster pump 5, are connected with condenser 7 through the first vacuum gooster pump 5, form a loop; The other end of the second adsorbent bed 12 is connected with the 3rd valve 3 by pipeline, and is connected to the pipeline between the 4th valve 4 and the second vacuum gooster pump 6, is connected with evaporimeter 8 through the second vacuum gooster pump 6, forms a loop.The first adsorbent bed 11, the second adsorbent bed 12 are connected with cooling water system 9, heat source system 10 respectively, form respectively corresponding water route.
The first vacuum gooster pump 5 and the second vacuum gooster pump 6 all can select quality light, compact conformation, and power consumption is little, the Roots vaccum pump that compression ratio is large.
The adsorption type heat pump course of work (to freeze as example) with vacuum gooster pump: in the time that the first adsorbent bed 11 adsorbs, the first adsorbent bed 11 joins with cooling water system 9, gaseous refrigerant is evaporated from evaporimeter 8, after the second vacuum gooster pump 6 superchargings, enter into adsorbent layer by the 4th valve 4, complete adsorption process; In the time that adsorbent bed 12 carries out desorption, the second adsorbent bed 12 joins with heat source system 10, desorption is out from the first adsorbent bed 12 for gaseous refrigerant, by the second valve 2, the first vacuum gooster pump 5, after supercharging, enters into condenser 7, it is liquid that condensation of refrigerant becomes, and liquid back flow of refrigerant completes once circulation to evaporimeter 8.By the phase-change heat transfer in evaporimeter 8, realizing adsorption type heat pump provides the function of cold to the external world.
As shown in Figure 2, in the present embodiment, adsorbent is silica gel, and adsorbate is water, and vacuum gooster pump compression ratio is 2.T
h, T
m, T
lbe respectively adsorbent bed desorption temperature, condensation/chilling temperature and cold-producing medium evaporating temperature, correspond to 70 DEG C, 30 DEG C, 15 DEG C; P
tH, P
tM, P
tLsteam-laden vapour pressure under corresponding said temperature, corresponds to 31.16kPa, 4.25kPa, 1.71kPa respectively, therefore, and in common adsorption type heat pump
be respectively 0.14,0.4, q
1for 125mg/g, q
2for 278mg/g, Δ q is 153mg/g.The present invention adds after vacuum gooster pump, is equivalent to P
tH, P
tLincrease to respectively 62.32kPa, 3.42kPa, P
tMit is constant,
be respectively 0.07,0.8, q
1for 76mg/g, q
2for 401mg/g, Δ q is 325mg/g, and therefore, cold-producing medium Efficient Cycle amount is not add 2 times of vacuum gooster pump.Increase cold-producing medium Efficient Cycle amount, and then improve adsorption type heat pump output refrigeration work consumption, under identical equipment volume, raising equipment output refrigeration work consumption density.Meanwhile, can increase the pressure reduction between adsorbent bed and condenser, evaporimeter and adsorbent bed, improve adsorbent desorption rate and the rate of adsorption, improve adsorbent bed heat and mass transfer performance, improve the COP of adsorption type heat pump.
Embodiment 2
As shown in Figure 1 b, a kind of modified adsorption type heat pump, the first adsorbent bed 11, the second adsorbent bed 12 are connected with heat source system 10, cooling water system 9 respectively, form respectively corresponding water route.The adsorption type heat pump course of work (to freeze as example) with vacuum gooster pump: in the time that the second adsorbent bed 12 adsorbs, the first adsorbent bed 12 joins with cooling water system 9, gaseous refrigerant is evaporated from evaporimeter 8, after the second vacuum gooster pump 6 superchargings, enter into adsorbent layer by the 3rd valve 3, complete adsorption process; In the time that the first adsorbent bed 11 carries out desorption, the first adsorbent bed 11 joins with heat source system 10, desorption is out from the first adsorbent bed 11 for gaseous refrigerant, by the first valve 1, the first vacuum gooster pump 5, after supercharging, enters into condenser 7, it is liquid that condensation of refrigerant becomes, and liquid back flow of refrigerant completes once circulation to evaporimeter 8.By the phase-change heat transfer in evaporimeter 8, realizing adsorption type heat pump provides the function of cold to the external world.
Above-listed detailed description is for the illustrating of possible embodiments of the present invention, and this embodiment is not in order to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (7)
1. a modified adsorption type heat pump, it is characterized in that, comprise the first adsorbent bed (11), the second adsorbent bed (12), condenser (7), evaporimeter (8), the first vacuum gooster pump (5) and the second vacuum gooster pump (6); Wherein one end first valve (1) of the first adsorbent bed (11), the first vacuum gooster pump (5) are connected with condenser (7) by pipeline, form one first loop; The other end of the first adsorbent bed (11) is connected with evaporimeter (8) by pipeline through the 4th valve (4), the second vacuum gooster pump (6), forms a second servo loop; The second adsorbent bed (12) one end is connected with the second valve (2) by pipeline, and be connected to the pipeline between the first valve (1) and the first vacuum gooster pump (5), be connected with condenser (7) through the first vacuum gooster pump (5), form a tertiary circuit; The other end of the second adsorbent bed (12) is connected with the 3rd valve (3) by pipeline, and be connected to the pipeline between the 4th valve (4) and the second vacuum gooster pump (6), be connected with evaporimeter (8) through the second vacuum gooster pump (6), form one the 4th loop.
2. modified adsorption type heat pump according to claim 1, it is characterized in that, described the first adsorbent bed (11), the second adsorbent bed (12) are connected with cooling water system (9), heat source system (10) respectively, form respectively corresponding water route.
3. modified adsorption type heat pump according to claim 2, it is characterized in that, this modified adsorption type heat pump is under refrigeration mode, described the first vacuum gooster pump (5) is to condenser (7) direction supercharging, and described the second vacuum gooster pump (6) is to the first adsorbent bed (11) and/or the second adsorbent bed (12) direction supercharging.
4. according to the modified adsorption type heat pump described in claim 1-3 any one, it is characterized in that, described the first adsorbent bed (11) is or/and the adsorbent of the second adsorbent bed (12) is any in silica gel, zeolite, active carbon, and its adsorbate is water.
5. a modified adsorption type heat pump carries out the method for adsorption-desorption, it is characterized in that, in the time that adsorbent bed carries out adsorption and desorption process, improve respectively the refrigerant pressure of vaporizer side and adsorbent bed side, increase the pressure differential between evaporimeter and adsorbent bed, adsorbent bed and condenser, be used for increasing modified adsorption type heat pump adsorbent Efficient Cycle amount, so that modified adsorption type heat pump output refrigeration work consumption and COP are effectively promoted.
6. modified adsorption type heat pump according to claim 5 carries out the method for adsorption-desorption, it is characterized in that, in the time that adsorbent bed carries out adsorption process, after supercharging, enter in this adsorbent bed and carry out adsorption process from evaporimeter gaseous refrigerant out, to increase the pressure differential between evaporimeter and this adsorbent bed; In the time that adsorbent bed carries out desorption process, after supercharging, enter condenser from this adsorbent bed gaseous refrigerant out and carry out condensation, to increase the pressure differential between this adsorbent bed and condenser.
7. modified adsorption type heat pump according to claim 5 carries out the method for adsorption-desorption, it is characterized in that, when the first adsorbent bed (11) carries out adsorption process, the 4th valve (4) is opened, gaseous refrigerant is evaporated from evaporimeter (8), through the second vacuum gooster pump (6), the 4th valve (4), enter the first adsorbent bed (11); The second adsorbent bed (12) carries out desorption process simultaneously, now the second valve (2) is opened, gaseous refrigerant from the interior desorption of the second adsorbent bed (12) out, through the second valve (2), the first vacuum gooster pump (5), enter condenser (7) and be condensed into liquid refrigerant and be back in evaporimeter (8).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04316965A (en) * | 1991-04-17 | 1992-11-09 | Mitsubishi Heavy Ind Ltd | Adsorption type refrigerating machine |
| JPH1137596A (en) * | 1997-07-18 | 1999-02-12 | Chubu Electric Power Co Inc | Chemical heat pump |
| JPH11223411A (en) * | 1998-02-03 | 1999-08-17 | Toyota Central Res & Dev Lab Inc | Adsorption heat pump |
| CN1809508A (en) * | 2003-06-20 | 2006-07-26 | 三菱化学株式会社 | Zeolite, method for production thereof, adsorbent comprising said zeolite, heat utilization system, adsorption heat pump, heating and cooling storage system and humidity controlling air-conditioning a |
| JP4300690B2 (en) * | 2000-08-02 | 2009-07-22 | 株式会社デンソー | Adsorption type refrigerator |
| JP4565539B2 (en) * | 2003-05-08 | 2010-10-20 | 中部電力株式会社 | Operation method of adsorption refrigerator |
-
2014
- 2014-05-29 CN CN201410235911.2A patent/CN104048441A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04316965A (en) * | 1991-04-17 | 1992-11-09 | Mitsubishi Heavy Ind Ltd | Adsorption type refrigerating machine |
| JPH1137596A (en) * | 1997-07-18 | 1999-02-12 | Chubu Electric Power Co Inc | Chemical heat pump |
| JPH11223411A (en) * | 1998-02-03 | 1999-08-17 | Toyota Central Res & Dev Lab Inc | Adsorption heat pump |
| JP4300690B2 (en) * | 2000-08-02 | 2009-07-22 | 株式会社デンソー | Adsorption type refrigerator |
| JP4565539B2 (en) * | 2003-05-08 | 2010-10-20 | 中部電力株式会社 | Operation method of adsorption refrigerator |
| CN1809508A (en) * | 2003-06-20 | 2006-07-26 | 三菱化学株式会社 | Zeolite, method for production thereof, adsorbent comprising said zeolite, heat utilization system, adsorption heat pump, heating and cooling storage system and humidity controlling air-conditioning a |
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