CN102200358A - Two-stage double-effect lithium bromide (LiBr) refrigeration-heat pump cycle system - Google Patents
Two-stage double-effect lithium bromide (LiBr) refrigeration-heat pump cycle system Download PDFInfo
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- CN102200358A CN102200358A CN2010102148927A CN201010214892A CN102200358A CN 102200358 A CN102200358 A CN 102200358A CN 2010102148927 A CN2010102148927 A CN 2010102148927A CN 201010214892 A CN201010214892 A CN 201010214892A CN 102200358 A CN102200358 A CN 102200358A
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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 discloses a two-stage double-effect lithium bromide (LiBr) refrigeration-heat pump cycle system, which comprises a double-effect LiBr refrigeration system and a single-effect LiBr refrigeration system, wherein the two systems share a condenser and an evaporator; a refrigerant steam outlet of a generator II is connected with a refrigerant steam inlet of an absorber II; the refrigerant steam outlet of a generator III is connected with the refrigerant steam inlet of the condenser; the generator II is connected in parallel with a refrigerant water outlet of the condenser by a throttling device and a refrigerant water inlet of the evaporator respectively; the refrigerant steam outlet of the evaporator is connected with the refrigerant steam inlet of an absorber I; a concentrated solution outlet of a heat exchanger I is connected with a concentrated solution inlet of a heat exchanger III; the concentrated solution outlet of the heat exchanger III is connected with the concentrated solution inlet of the absorber I; a cooling water outlet of the absorber I is connected with a cooling water inlet of the heat exchanger III; and cooling water at an outlet of the heat exchanger III respectively enters the absorber II and the condenser, absorbs heat and then accesses a user end. By the invention, cold supply and heat supply can be realized at the same time, heat pollution is reduced, and energy sources are saved.
Description
Technical field
The present invention relates to a kind of two-stage double-effect lithium bromide refrigeration-heat pump circulating system, the heat that refrigeration is discharged is used for heating environment water, realizes cooling and heat supply simultaneously.
Background technology
Lithium-bromide absorption-type refrigerating machine is widely used in refrigeration industry at present, discharge a large amount of used heat by cooling water in the lithium-bromide absorption-type refrigerating machine process of refrigerastion, because the temperature of cooling water is generally about 36-38 ℃, these low-temperature waste heats are difficult to well be utilized, and cause the serious waste of the energy.On the other hand, need the higher hot water of temperature more than 65 ℃ in the industry, generally this part hot water is that vapours heating environment water by steam power plant obtains, and so just consumes in a large number the heat energy than high-grade.Integrate consideration if can and add hot water with refrigeration, the heat heating environment water that utilizes refrigeration to discharge when producing cold can not only reduce " thermal pollution " of refrigeration to environment, and energy savings.If behind the lithium bromide refrigerating unit, add a heat pump again, allow the lithium-bromide absorption-type refrigerating machine cooling water enter absorption heat pump heat industrial water, though the used heat that has utilized refrigeration to discharge, but such cover system of bromine cooling machine heat pump consumes more high-grade heat energy, and whole efficiency of energy utilization and fiery undesirable with efficient, increase equipment investment simultaneously, component devices has redundancy, complex structure, and floor space is big.
Summary of the invention
The invention discloses a kind of two-stage double-effect lithium bromide refrigeration-heat pump circulating system, the heat that refrigeration is discharged can be used for the higher temperature more than the heating environment water to 65 ℃, solve the problem that the used heat that lithium-bromide absorption-type refrigerating machine produces in the prior art is not fully utilized.The present invention can improve the outlet temperature of cooling water, thereby make cooling water can directly become water for industrial use on the basis that does not increase evaporimeter and condenser in refrigeration, effectively reduced " thermal pollution " of refrigeration to environment, simple in structure and energy savings.
A kind of two-stage double-effect lithium bromide refrigeration-heat pump circulating system, comprise an economic benefits and social benefits LiBr refrigeration system and a single-action LiBr refrigeration system, it is characterized in that: the shared condenser of described economic benefits and social benefits LiBr refrigeration system and single-action LiBr refrigeration system and an evaporimeter, concrete structure is as follows:
A) outlet of the refrigerant vapour of the generator two of economic benefits and social benefits LiBr refrigeration system links to each other with the refrigerant vapour import of the absorber two of single-action LiBr refrigeration system, the refrigerant vapour outlet of the generator three of single-action LiBr refrigeration system links to each other with the refrigerant vapour import of condenser, generator two is connected with the water as refrigerant inlet parallel of evaporimeter by the throttling arrangement that is provided with separately respectively with the water as refrigerant outlet of condenser, and the refrigerant vapour outlet of evaporimeter links to each other with the refrigerant vapour import of absorber one;
B) outlet of the concentrated solution of the heat exchanger one of economic benefits and social benefits LiBr refrigeration system is connected with the concentrated solution import of heat exchanger three, and the concentrated solution outlet of heat exchanger three is connected with the concentrated solution import of absorber one;
C) enter of the cooling water inlet end inflow of the cooling water 21 of absorber one from absorber one, the coolant outlet of absorber one links to each other with the cooling water inlet of heat exchanger three, through the cooling moisture three tunnel of heat exchanger three outlets, wherein one road cooling water taps into the access customer end always; The second the tunnel enters the cooling water two that flow out absorber two heat absorption backs, connects user side; Third Road enters the cooling water three that flows out condenser heat absorption back and connects user side.
The heat exchanger three of two-stage double-effect lithium bromide refrigeration-heat pump circulating system, absorber two and condenser are discharged cooling water simultaneously, but the temperature of heat exchanger three is lower, absorber two is higher with the temperature of condenser, so cooling water is earlier through absorber one, heat exchanger three divides two-way to enter absorber two and condenser respectively again, can produce the hot water of higher temperature, to satisfy the needs of different user.
Because temperature can not be too high in the absorber one, the too high refrigerating efficiency that makes reduces, so the present invention adds a heat exchanger three, the concentrated solution import of heat exchanger three links to each other with the outlet of the concentrated solution of heat exchanger one, and the concentrated solution outlet of heat exchanger three links to each other with the concentrated solution import of absorber one; The cooling water inlet of heat exchanger three links to each other with the coolant outlet of absorber one.The heat that like this concentrated solution will be entered absorber one originally is moved out to heat exchanger three heating cooling waters, can make absorber one maintain lower temperature further when raising enters absorber two and condenser cooling water temperature.
The present invention proposes a kind of new two-stage double-effect lithium bromide refrigeration-heat pump circulating system, it can improve the outlet temperature of cooling water in refrigeration, thereby makes cooling water can directly become water for industrial use.So both reduced " thermal pollution " of refrigeration, saved a large amount of energy again environment.
Description of drawings
Fig. 1 is a two-stage double-effect lithium bromide refrigeration-heat pump circulating system structural representation of the present invention;
Fig. 2 is two-stage double-effect lithium bromide refrigeration-heat pump circulating system h-ξ figure of the present invention;
Fig. 3 is existing economic benefits and social benefits LiBr refrigerant system configurations schematic diagram;
Fig. 4 is existing single-action LiBr refrigeration system schematic diagram.
The enthalpy of h:LiBr solution, ξ: the concentration of LiBr solution, p1: the pressure in the evaporimeter, p2: the pressure in the absorber one, p3: the pressure in the absorber two, p4: the pressure in the generator three, p5: the pressure in the generator one, 1, state one, 2, state two, 4, state four, 4 ', the saturation state of weak solution under the pressure of generator one, 5, state five, 6, state six, 7, state seven, 8, state eight, 9, state nine, 10, state ten, 11, state 11,13, state 13,14, state 14,14 ', the saturation state of weak solution under the pressure of generator three, 15, state 15,16, state 16,17, state 17,18, state 18,19, throttling arrangement, 21, enter the cooling water of absorber one, 22, cooling water one, 23, cooling water two, 24, cooling water three, 25, the chilled water import, 26, the chilled water outlet, 27, thermal source one import, 28, thermal source one outlet, 29, thermal source two imports, 30, thermal source two outlets.
The specific embodiment
The present invention is described in detail below in conjunction with drawings and Examples.
A kind of two-stage double-effect lithium bromide refrigeration-heat pump circulating system, comprise an economic benefits and social benefits LiBr refrigeration system, with a single-action LiBr refrigeration system, economic benefits and social benefits LiBr refrigeration system is made up of absorber one, heat exchanger one, heat exchanger two, generator one, generator two, condenser and evaporimeter as shown in Figure 3; Single-action LiBr refrigeration system as shown in Figure 4, form by absorber two, heat exchanger four, generator three, condenser and evaporimeter, characteristics are: the shared condenser of described economic benefits and social benefits LiBr refrigeration system and single-action LiBr refrigeration system and an evaporimeter, as shown in Figure 1.This circulatory system has a refrigerant loop: represent with fine line among Fig. 1; Two solution loops: represent with heavy line among Fig. 1; Cooling water flow to: dot among Fig. 1.Its concrete structure is seen Fig. 1:
Refrigerant loop: the refrigerant vapour outlet of generator one links to each other with the refrigerant vapour import of generator two, the refrigerant vapour outlet of generator two links to each other with the refrigerant vapour import of absorber two, the refrigerant vapour outlet of generator three links to each other with the refrigerant vapour import of condenser, the water as refrigerant outlet of generator two and the condenser throttling arrangement 19 by separately respectively links to each other with the water as refrigerant import of evaporimeter, and the refrigerant vapour of evaporimeter exports and links to each other with the refrigerant vapour import of absorber one.
Two solution loops:
The weak solution of absorber one is by the road successively by heat exchanger one, heat exchanger two and generator one, the intermediate solution of generator one is by the road successively by heat exchanger two and generator two, and the outlet of the concentrated solution of generator two is successively through entering the concentrated solution entrance point of absorber one behind heat exchanger one, the heat exchanger three;
Successively by heat exchanger four and generator three, the concentrated solution of generator three is by the road by entering absorber two behind the heat exchanger four by the road for the weak solution of absorber two.
Cooling water flow to:
Enter of the cooling water inlet end inflow of the cooling water 21 of absorber one from absorber one, the coolant outlet of absorber one links to each other with the cooling water inlet of heat exchanger three, the coolant outlet of heat exchanger three divides three the tunnel, wherein first via low-temperature cooling water 1, the second the tunnel enters the cooling water 2 23 that flow out absorber two backs, and Third Road enters the cooling water 3 24 that flows out behind the condenser and directly advances user side respectively.
Fig. 2 is two-stage double-effect lithium bromide refrigeration-heat pump circulating system h-ξ figure of the present invention.From Fig. 1 and Fig. 2 as can be seen, the weak solution of absorber one outlet (being state 22 among Fig. 2) is heated through heat exchanger one, heat exchanger two, reach the high temperature weak solution of the state 44 among Fig. 2, after enter generator one, at thermal source one: flow out by thermal source one outlet 28 after steam enters generator one heat release by thermal source one import 27, heating is after down this part weak solution saturation state of reaching generator one pressure correspondence earlier is state 4 ', and evaporation produces refrigerant vapor (being state 99 among Fig. 2) back weak solution concentration and increases the intermediate solution that becomes state 55 among Fig. 2.This intermediate solution in heat exchanger two after the heat release temperature drop to state 66 among Fig. 2, after enter generator two.In generator two, become the higher concentrated solution of concentration (being state 77 among Fig. 2), produce refrigerant vapor (state is 11 among Fig. 2) simultaneously by the further heating of the refrigerant vapor (state 99 among Fig. 2) that produces in the generator one.The concentrated solution that the refrigerant vapor of this moment is absorbed in the device two absorbs, make the strong solution concentration in the absorber two be declined to become the weak solution of state 13 among Fig. 2, this part weak solution is through heat exchanger four heating, temperature is increased to the state 14 among Fig. 2, after enter generator three, at thermal source two: after steam steam enters generator three heat releases by thermal source two imports 29, flow out by thermal source two outlets 30, after the saturation state that following this part weak solution of heating reaches generator three pressure correspondences earlier is state 14 ', evaporation produces the concentrated solution that refrigerant vapor (state 17 among Fig. 2) back concentration increases to state 15 among Fig. 2, this concentrated solution drops to state 16 through heat exchanger four exothermic temperatures, flows to absorber two then.
The refrigerant vapor (state 99 among Fig. 2) that generator one produces after generator two heat releases, condenses into water, and enthalpy is reduced to the state 10 among Fig. 2, enters evaporimeter after throttling, and sweat cooling behind the absorption chilled water heat arrives the state 1 among Fig. 2.The refrigerant vapor (state 17 among Fig. 2) that generator three produces condensation enthalpy behind condenser heating cooling water is reduced to the state 18 among Fig. 2, enters evaporimeter after throttling, and sweat cooling behind the absorption chilled water heat arrives the state 1 among Fig. 2.Chilled water enters the evaporimeter heat release by chilled water import 25, flows to colod-application family by chilled water outlet 26 after temperature descends.
The refrigerant vapor of the outlet of evaporimeter (state 1 among Fig. 2), the bromize lithium concentrated solution that is absorbed in the device one absorbs, and this part strong solution concentration drops to the state 22 of Fig. 2.
Claims (1)
1. two-stage double-effect lithium bromide refrigeration-heat pump circulating system, comprise an economic benefits and social benefits LiBr refrigeration system and a single-action LiBr refrigeration system, it is characterized in that: the shared condenser of described economic benefits and social benefits LiBr refrigeration system and single-action LiBr refrigeration system and an evaporimeter, concrete structure is as follows:
A) outlet of the refrigerant vapour of the generator two of economic benefits and social benefits LiBr refrigeration system links to each other with the refrigerant vapour import of the absorber two of single-action LiBr refrigeration system, the refrigerant vapour outlet of the generator three of single-action LiBr refrigeration system links to each other with the refrigerant vapour import of condenser, generator two is connected with the water as refrigerant inlet parallel of evaporimeter by the throttling arrangement (19) that is provided with separately respectively with the water as refrigerant outlet of condenser, and the refrigerant vapour outlet of evaporimeter links to each other with the refrigerant vapour import of absorber one;
B) outlet of the concentrated solution of the heat exchanger one of economic benefits and social benefits LiBr refrigeration system is connected with the concentrated solution import of heat exchanger three, and the concentrated solution outlet of heat exchanger three is connected with the concentrated solution import of absorber one;
C) enter of the cooling water inlet end inflow of the cooling water 21 of absorber one from absorber one, the coolant outlet of absorber one links to each other with the cooling water inlet of heat exchanger three, the cooling moisture three tunnel of heat exchanger three outlets, wherein one road cooling water one (22) directly enters user side; The second the tunnel enters the cooling water two (23) that flows out absorber two heat absorption backs connects user side; Third Road enters the cooling water three (24) that flows out condenser heat absorption back and connects user side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102148927A CN102200358B (en) | 2010-06-29 | 2010-06-29 | Two-stage double-effect lithium bromide (LiBr) refrigeration-heat pump cycle system |
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| CN2010102148927A CN102200358B (en) | 2010-06-29 | 2010-06-29 | Two-stage double-effect lithium bromide (LiBr) refrigeration-heat pump cycle system |
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| CN102200358A true CN102200358A (en) | 2011-09-28 |
| CN102200358B CN102200358B (en) | 2012-12-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384640A (en) * | 2011-11-26 | 2012-03-21 | 双良节能***股份有限公司 | 1.5 longacting lithium bromide absorption refrigeration/heat pump unit |
| CN104807239A (en) * | 2014-03-27 | 2015-07-29 | 李华玉 | Absorption heat pump of fourth class and absorption heat pump of fifth class |
| CN107101371A (en) * | 2017-06-28 | 2017-08-29 | 远大空调有限公司 | A kind of two-period form Hot water units system and its method of work |
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| CN101413732A (en) * | 2008-11-23 | 2009-04-22 | 李华玉 | Single-stage and two-stage neighboring combined composite absorption type heat pump |
| US7624588B2 (en) * | 2006-03-06 | 2009-12-01 | Postech Academy Industry Corp. | Hybrid absorption chiller |
| CN101650095A (en) * | 2009-09-03 | 2010-02-17 | 清华大学 | Multistage absorption refrigerating/heat pump unit |
| CN201748699U (en) * | 2010-06-29 | 2011-02-16 | 上海理工大学 | Two-stage dual-purpose lithium bromide cooling and heating pump combined circulating system |
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2010
- 2010-06-29 CN CN2010102148927A patent/CN102200358B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280331A (en) * | 1978-11-07 | 1981-07-28 | Sanyo Electric Co., Ltd. | Single effect and double effect absorption refrigerating system |
| KR20040089820A (en) * | 2003-04-15 | 2004-10-22 | 최동순 | Double effect model direct connection absorbtion type refrigerator |
| US7624588B2 (en) * | 2006-03-06 | 2009-12-01 | Postech Academy Industry Corp. | Hybrid absorption chiller |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384640A (en) * | 2011-11-26 | 2012-03-21 | 双良节能***股份有限公司 | 1.5 longacting lithium bromide absorption refrigeration/heat pump unit |
| CN102384640B (en) * | 2011-11-26 | 2014-02-26 | 双良节能***股份有限公司 | 1.5 longacting lithium bromide absorption refrigeration/heat pump unit |
| CN104807239A (en) * | 2014-03-27 | 2015-07-29 | 李华玉 | Absorption heat pump of fourth class and absorption heat pump of fifth class |
| CN104807239B (en) * | 2014-03-27 | 2018-05-08 | 李华玉 | 4th class absorption heat pump and the 5th class absorption heat pump |
| CN107101371A (en) * | 2017-06-28 | 2017-08-29 | 远大空调有限公司 | A kind of two-period form Hot water units system and its method of work |
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| CN102200358B (en) | 2012-12-26 |
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