CN211625765U - Lithium bromide absorption refrigeration system with energy storage function - Google Patents
Lithium bromide absorption refrigeration system with energy storage function Download PDFInfo
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- CN211625765U CN211625765U CN202020128358.3U CN202020128358U CN211625765U CN 211625765 U CN211625765 U CN 211625765U CN 202020128358 U CN202020128358 U CN 202020128358U CN 211625765 U CN211625765 U CN 211625765U
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- cooling water
- lithium bromide
- bromide absorption
- cooling
- absorption refrigerator
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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 utility model discloses a lithium bromide absorption refrigeration system with energy storage function, including cooling tower, cooling water pump and lithium bromide absorption refrigerator, the cooling water outlet of cooling water pump is connected through cooling water inlet pipe with the cooling water inlet of lithium bromide absorption refrigerator, the cooling water outlet of lithium bromide absorption refrigerator is connected through cooling water outlet with the upper nozzle of cooling tower, be provided with the cooling tower fan on the cooling tower, be provided with cooling water regulating valve on the cooling water inlet pipe; or a motor of the cooling water pump is provided with a cooling water pump frequency converter; or the fan of the cooling tower is provided with a fan frequency converter. The utility model discloses itself possesses the energy storage function, can be applicable to the production technology cooling place that the cold load peak value is greater than rated load more than 10% in the great, the short time of cold load fluctuation range.
Description
Technical Field
The utility model relates to a lithium bromide absorption refrigeration system belongs to air conditioning equipment technical field.
Background
As shown in fig. 1, a conventional lithium bromide absorption refrigeration system is composed of a lithium bromide absorption refrigerator 5, a cooling tower 8, a cooling water pump 1, a control system (not shown in the figure), and a pipeline connecting the respective components, and a cooling tower fan 7 is disposed on the cooling tower 8. The cooling water outlet of the cooling water pump 1 is connected with the cooling water inlet of the lithium bromide absorption refrigerator 5 through a cooling water inlet pipe 2, and the cooling water outlet of the lithium bromide absorption refrigerator 5 is connected with the water feeding port of the cooling tower 8 through a cooling water outlet pipe 6. The system can be used for preparing cold water for comfortable air conditioner or process cooling, and can also be used for preparing hot water for building heat supply or process heating when the lithium bromide absorption refrigerator is a cold-hot water type refrigerator. However, the system does not have the energy storage function, the maximum refrigerating capacity of the system is generally not more than the rated refrigerating capacity, and the system is not suitable for the production process cooling places with large fluctuation range of the refrigerating load and the peak value of the refrigerating load more than 10% of the rated load in a short time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned not enough, provide a take lithium bromide absorption refrigeration system of energy storage function, through set up a cooling water regulating valve on lithium bromide absorption refrigeration system basis in the past, perhaps cooling water pump's motor adopts inverter motor and disposes the cooling water pump converter, perhaps the cooling tower fan adopts frequency conversion fan and disposes the fan converter. When the cooling load is smaller, the cooling water regulating valve is regulated and controlled, or the rotating speed of the cooling water pump is regulated and controlled, or the rotating speed of the fan of the cooling tower is regulated and controlled, so that the cooling water quantity of the lithium bromide absorption refrigerator is reduced or the cooling water inlet temperature of the lithium bromide absorption refrigerator is increased, the circulating solution concentration of the lithium bromide absorption refrigerator is increased, more refrigerant water is separated out and stored, and the lithium bromide absorption refrigerator stores refrigeration energy and has overload refrigeration conditions in a short time. When the cold load is increased to exceed the rated refrigerating capacity of the lithium bromide absorption refrigerator, the cooling water regulating valve is regulated and controlled, or the rotating speed of the cooling water pump is regulated and controlled, or the rotating speed of the cooling tower fan is regulated and controlled, so that the cooling water quantity of the lithium bromide absorption refrigerator is increased or the cooling water inlet temperature of the lithium bromide absorption refrigerator is reduced, the refrigerating energy stored in the lithium bromide absorption refrigerator is released, and the lithium bromide absorption refrigerator can operate under an overload condition in a short time to cope with the peak cold load.
The utility model adopts the technical scheme as follows:
a lithium bromide absorption refrigeration system with an energy storage function comprises a cooling tower, a cooling water pump and a lithium bromide absorption refrigerator, wherein the cooling tower, the cooling water pump and the lithium bromide absorption refrigerator are sequentially connected to form a cooling water circulation system; or a motor of the cooling water pump is provided with a cooling water pump frequency converter; or the fan of the cooling tower is provided with a fan frequency converter.
Preferably, the cooling water regulating valve is a cooling water electric two-way regulating valve.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model has the energy storage function, and can be applied to the production process cooling places with large cold load fluctuation range and the cold load peak value more than 10% of the rated load in a short time;
a cooling water regulating valve is additionally arranged on the basis of the traditional lithium bromide absorption refrigeration system, or a motor of a cooling water pump adopts a variable frequency motor and is provided with a cooling water pump frequency converter, or a cooling tower fan adopts a variable frequency fan and is provided with a fan frequency converter. When the cooling load is smaller, the cooling water regulating valve is regulated and controlled, or the rotating speed of the cooling water pump is regulated and controlled, or the rotating speed of the fan of the cooling tower is regulated and controlled, so that the cooling water quantity of the lithium bromide absorption refrigerator is reduced or the cooling water inlet temperature of the lithium bromide absorption refrigerator is increased, the circulating solution concentration of the lithium bromide absorption refrigerator is increased, more refrigerant water is separated out and stored, the lithium bromide absorption refrigerator stores refrigeration energy, and the overload refrigeration condition in a short time is achieved. When the cold load is increased to exceed the rated refrigerating capacity of the lithium bromide absorption refrigerator, the cooling water regulating valve is regulated and controlled, or the rotating speed of the cooling water pump is regulated and controlled, or the rotating speed of the cooling tower fan is regulated and controlled, so that the cooling water quantity of the lithium bromide absorption refrigerator is increased or the cooling water inlet temperature of the lithium bromide absorption refrigerator is reduced, the refrigerating energy stored in the lithium bromide absorption refrigerator is released, and the lithium bromide absorption refrigerator can operate under an overload condition in a short time to cope with the peak cold load.
Drawings
Fig. 1 is a schematic diagram of a lithium bromide absorption refrigeration system in the prior art.
Fig. 2 is a schematic structural diagram of a lithium bromide absorption refrigeration system according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a lithium bromide absorption refrigeration system according to embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of a lithium bromide absorption refrigeration system according to embodiment 3 of the present invention.
Wherein, the cooling water pump 1; a cooling water inlet pipe 2; a cold water inlet pipe 3; a cold water outlet pipe 4; a lithium bromide absorption refrigerator 5; a cooling water outlet pipe 6; a cooling tower blower 7; a cooling tower 8; a cooling water regulating valve 9; a cooling water frequency converter 10; and a fan frequency converter 11.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only, and are not intended to limit the scope of the present invention. Any modifications, which can be easily implemented by a person skilled in the art, made to the present invention without departing from the technical solutions of the present invention, will fall within the scope of the claims of the present invention.
Example 1:
this example is as shown in fig. 2 a lithium bromide absorption refrigeration system of area energy storage function, including cooling tower 8, cooling water pump 1 and lithium bromide absorption refrigerator 5, cooling tower 8, cooling water pump 1 and lithium bromide absorption refrigerator 5 connect gradually and form cooling water circulation system, the cooling water export of cooling water pump 1 passes through cooling water inlet pipe 2 with the cooling water import of lithium bromide absorption refrigerator 5 and is connected, the cooling water export of lithium bromide absorption refrigerator 5 passes through cooling water outlet pipe 6 with the mouth of a river that goes up of cooling tower 8 and is connected, be provided with cooling tower fan 7 on the cooling tower 8, be provided with cooling water regulating valve 9 on the cooling water inlet pipe 2. Cold water enters and exits an evaporator of the lithium bromide absorption refrigerator 5 through a cold water inlet pipe 3 and a cold water outlet pipe 4, and cooling water enters and exits an absorber and a condenser of the lithium bromide absorption refrigerator 5 through a cooling water inlet pipe 2 and a cooling water outlet pipe 6.
When the lithium bromide absorption refrigeration system is in refrigeration operation, when the cooling load is smaller and is 25-85% of the rated load, the opening of the cooling water regulating valve is regulated, controlled and reduced, so that the amount of cooling water entering the lithium bromide absorption refrigeration machine is reduced, the lithium bromide absorption refrigeration machine enters a cold storage operation state, the outlet temperature of the cooling water and the temperature of lithium bromide solution in the machine are increased, the concentration of the solution is gradually increased, and more refrigerant water is separated from the solution and stored in an evaporator of the refrigeration machine. The solution of the lithium bromide absorption refrigerator is in a high-concentration state and is stored with surplus refrigerant water, so that the refrigeration energy is stored, and the condition of refrigerating under overload or without heating in a short time is provided. When the cold load is increased and is more than 110% of the rated load, the cold water flow entering the evaporator of the refrigerator through the cold water inlet pipe of the lithium bromide absorption refrigerator or the cold water inlet temperature is larger than the rated value, the evaporation capacity of the refrigerant water in the evaporator is larger than the rated value, so that the cold water outlet temperature of the refrigerator reaches the rated temperature, and the evaporator is in an overload evaporation refrigeration state. At the moment, the opening of the cooling water regulating valve is regulated, controlled and increased, the amount of cooling water entering the lithium bromide absorption refrigerator is increased, and the cooling and heat extraction capacity of an absorber of the refrigerator is enhanced, so that the refrigeration energy stored in the cold storage operation period of the refrigerator is released, the surplus refrigerant water stored in the evaporator meets the requirement of overload evaporation refrigeration, the high-concentration solution has the capacity of excessively absorbing refrigerant steam, the excessive heat generated in the absorption process is timely taken out of the unit by the cooling water, and the refrigeration system realizes that the overload refrigeration operation in a short time corresponds to the peak cold load.
Example 2:
this embodiment is as shown in fig. 3, and a lithium bromide absorption refrigeration system with energy storage function includes cooling tower 8, cooling water pump 1 and lithium bromide absorption refrigerator 5, cooling tower 8, cooling water pump 1 and lithium bromide absorption refrigerator 5 connect gradually to form cooling water circulation system, cooling water outlet of cooling water pump 1 and cooling water inlet of lithium bromide absorption refrigerator 5 pass through cooling water inlet pipe 2 and are connected, cooling water outlet of lithium bromide absorption refrigerator 5 and the mouth of feeding of cooling tower 8 pass through cooling water outlet pipe 6 and are connected, be provided with cooling tower fan 7 on the cooling tower 8, the motor of cooling water pump 1 is inverter motor to dispose cooling water converter 10.
When the lithium bromide absorption refrigeration system is in refrigeration operation, when the cold load is smaller and is 25-85% of the rated load, the rotating speed of the cooling water pump is reduced by reducing the operating frequency of the frequency converter of the cooling water pump, the amount of cooling water entering the lithium bromide absorption refrigeration machine is reduced, the lithium bromide absorption refrigeration machine enters a cold storage operation state, the outlet temperature of the cooling water and the temperature of lithium bromide solution in the machine are increased along with the reduction of the rotating frequency of the frequency converter of the cooling water pump, the concentration of the solution is gradually increased, and more refrigerant water is separated from the solution and stored in an evaporator of the refrigeration machine. The solution of the lithium bromide absorption refrigerator is in a high-concentration state and is stored with surplus refrigerant water, so that the refrigeration energy is stored, and the condition of refrigerating under overload or without heating in a short time is provided. When the cold load is increased and is more than 110% of the rated load, the cold water flow entering the evaporator of the refrigerator through the cold water inlet pipe of the lithium bromide absorption refrigerator or the cold water inlet temperature is larger than the rated value, the evaporation capacity of the refrigerant water in the evaporator is larger than the rated value, so that the cold water outlet temperature of the refrigerator reaches the rated temperature, and the evaporator is in an overload evaporation refrigeration state. At the moment, the running frequency of a frequency converter of the cooling water pump is increased, the rotating speed of the cooling water pump is increased, the amount of cooling water entering the lithium bromide absorption type refrigerator is increased, and the cooling heat extraction capacity of an absorber of the refrigerator is enhanced, so that the refrigerating energy stored in the cold storage running period of the refrigerator can be released, namely the surplus refrigerant water stored in the evaporator meets the requirement of overload evaporation refrigeration, the high-concentration solution has the capacity of excessively absorbing refrigerant steam, the excessive heat generated in the absorption process is timely taken out of the unit by the cooling water, and the refrigerating system realizes the overload refrigeration running in a short time and corresponds to the peak value cold load.
Example 3:
this embodiment is a lithium bromide absorption refrigeration system with energy storage function as shown in fig. 4, which includes a cooling tower 8, a cooling water pump 1 and a lithium bromide absorption refrigerator 5, the cooling tower 8, the cooling water pump 1 and the lithium bromide absorption refrigerator 5 are connected in sequence to form a cooling water circulation system, a cooling water outlet of the cooling water pump 1 is connected with a cooling water inlet of the lithium bromide absorption refrigerator 5 through a cooling water inlet pipe 2, a cooling water outlet of the lithium bromide absorption refrigerator 5 is connected with a water supply port of the cooling tower 8 through a cooling water outlet pipe 6, a cooling tower fan 7 is arranged on the cooling tower 8, the cooling tower fan 7 is a variable frequency fan, and a fan frequency converter 11 is configured.
When the lithium bromide absorption refrigeration system is in refrigeration operation, when the cooling load is smaller and is 25-85% of the rated load, the rotating speed of a fan of a cooling tower is reduced by controlling a fan frequency converter, the temperature of a cooling water inlet of a lithium bromide absorption refrigerator is reduced, the lithium bromide absorption refrigerator enters a cold storage operation state, the temperature of a cooling water outlet and the temperature of lithium bromide solution in the lithium bromide absorption refrigerator are increased along with the temperature, the concentration of the solution is gradually increased, and more refrigerant water is separated from the solution and stored in an evaporator of the refrigerator. The solution of the lithium bromide absorption refrigerator is in a high-concentration state and is stored with surplus refrigerant water, so that the refrigeration energy is stored, and the condition of refrigerating under overload or without heating in a short time is provided. When the cold load is increased and is more than 110% of the rated load and exceeds the rated refrigerating capacity of the lithium bromide absorption refrigerator, the cold water flow entering the evaporator of the refrigerator through the cold water inlet pipe or the cold water inlet temperature is larger than the rated value, the evaporation capacity of the refrigerant water in the evaporator is larger than the rated value, so that the cold water outlet temperature of the lithium bromide absorption refrigerator reaches the rated temperature, and the evaporator is in an overload evaporation refrigerating state. At the moment, the rotating speed of a fan of the cooling tower is improved by controlling a fan frequency converter, the cooling water inlet temperature of the lithium bromide absorption type refrigerator is reduced, and the cooling heat extraction capacity of an absorber of the refrigerator is enhanced, so that the refrigeration energy stored in the cold storage operation period of the refrigerator can be released, the surplus refrigerant water stored in the evaporator meets the requirement of overload evaporation refrigeration, the high-concentration solution has the capacity of excessively absorbing refrigerant steam, the excessive heat generated in the absorption process is timely taken out of the unit by the cooling water, and the refrigeration system realizes that the overload refrigeration operation in a short time corresponds to the peak value cold load.
Claims (2)
1. The utility model provides a take energy storage function's lithium bromide absorption refrigeration system, includes cooling tower (8), cooling water pump (1) and lithium bromide absorption refrigerator (5), cooling tower (8), cooling water pump (1) and lithium bromide absorption refrigerator (5) connect gradually and form cooling water circulation system, the cooling water export of cooling water pump (1) is connected through cooling water import pipe (2) with the cooling water inlet of lithium bromide absorption refrigerator (5), the cooling water export of lithium bromide absorption refrigerator (5) is connected through cooling water outlet pipe (6) with the last mouth of a river of cooling tower (8), be provided with cooling tower fan (7) on cooling tower (8), its characterized in that: a cooling water regulating valve (9) is arranged on the cooling water inlet pipe (2); or a motor of the cooling water pump (1) is provided with a cooling water pump frequency converter (10); or the cooling tower fan (7) is provided with a fan frequency converter (11).
2. The lithium bromide absorption refrigeration system with energy storage function as claimed in claim 1, wherein: the cooling water regulating valve (9) is a cooling water electric two-way regulating valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020128358.3U CN211625765U (en) | 2020-01-20 | 2020-01-20 | Lithium bromide absorption refrigeration system with energy storage function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020128358.3U CN211625765U (en) | 2020-01-20 | 2020-01-20 | Lithium bromide absorption refrigeration system with energy storage function |
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| CN211625765U true CN211625765U (en) | 2020-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102764A (en) * | 2020-01-20 | 2020-05-05 | 双良节能系统股份有限公司 | Lithium bromide absorption refrigeration system with energy storage function and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102764A (en) * | 2020-01-20 | 2020-05-05 | 双良节能系统股份有限公司 | Lithium bromide absorption refrigeration system with energy storage function and method |
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