CN102628624A - Cascade lithium bromide refrigeration and cold storage system - Google Patents
Cascade lithium bromide refrigeration and cold storage system Download PDFInfo
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- CN102628624A CN102628624A CN2012101250965A CN201210125096A CN102628624A CN 102628624 A CN102628624 A CN 102628624A CN 2012101250965 A CN2012101250965 A CN 2012101250965A CN 201210125096 A CN201210125096 A CN 201210125096A CN 102628624 A CN102628624 A CN 102628624A
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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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention discloses a cascade lithium bromide refrigeration and cold storage system which comprises a lithium bromide absorption refrigeration system containing a lithium bromide absorption cooling water loop and a lithium bromide refrigerant loop, an electric refrigeration system containing an electric refrigeration cooling water loop and an electric refrigeration refrigerant loop, and an ice storage system containing a refrigerant loop. Both a first evaporator and a plate heat exchanger form separately connected circulating chilled water loops respectively with a chilled water pump, a water separator, terminal equipment and a water collector shared by the two, wherein the terminal equipment is connected with an air conditioner that needs cooling. The cascade lithium bromide refrigeration and cold storage system can not only provide efficient and reliable cooling, but also can make and store ice when demand for electricity is low, thus enabling efficient ice making to be realized. Furthermore, the system has extremely low power consumption and can effectively save energy and cost.
Description
Technical field
The present invention relates to a kind of system of air-conditioning cooling that is, particularly relate to superposition type lithium bromide refrigerating and cold accumulation system.
Background technology
Air conditioner energy saving is the important component part of building energy conservation.Mode to the air-conditioning cooling commonly used at present has three kinds, and first kind is the independent cooling of ice cold-storage, and second kind is ice cold-storage and electric refrigerating machine group associating cooling, and the third is lithium-bromide absorption-type refrigerating machine or electricity refrigeration refrigeration machine cooling.
Lithium-bromide absorption-type refrigerating machine can utilize waste vapour in steam power plant or the commercial production, waste heat etc. to provide chilled water to be used for air-conditioning or industrial cooling as thermal source, has the energy utilization rate of raising, relaxes the imbalance between power supply and demand in summer, helps characteristics such as environmental protection.Its weak point is: if be cold-producing medium with water, when bromize lithium concentrated solution is absorbent, the chilled water temperature of producing can only can not provide the chilled water below 0 ℃ more than 0 ℃, can not be used for ice making to store cold.
Ice storage technology is one of energy-conservation key technology of refrigeration system, has balanced network load, minimizing power plant unit capacity, peak load shifting, energy-saving and emission-reduction, saving air-conditioning system operating cost, the characteristics such as air-conditioning system installed capacity and distribution capacity that reduce.
Summary of the invention
The present invention accomplishes in order to solve deficiency of the prior art; The purpose of this invention is to provide a kind of both can be efficiently, cooling reliably, again can be when low power consumption the ice making ice-reserving, realize that efficient ice making, power consumption seldom, effectively saves the superposition type lithium bromide refrigerating and the cold accumulation system of energy saving expense.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Comprise refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system; Said refrigeration system with lithium bromide absorption comprises that but water loop and the lithium bromide that is connected successively absorb following that the circulatory system, first condenser, first evaporimeter, first throttle device form and comprise refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system for the lithium bromide absorption cold that formed by first cooling tower, first cooling water pump, first condenser; Said refrigeration system with lithium bromide absorption comprises that but water loop and the lithium bromide that is connected successively absorb the lithium bromide absorption cold matchmaker loop of the circulation that the circulatory system, first condenser, first throttle device and first evaporimeter form for the lithium bromide absorption cold that formed by first cooling tower, first cooling water pump, first condenser; Said electric refrigeration system comprises the electric refrigeration refrigerant loop of the circulation that the electricity refrigeration chilled(cooling) water return (CWR) that forms circulation by second cooling tower, by-pass valve control, second cooling water pump and second condenser and the compressor that is connected successively, second condenser, second throttling arrangement, second evaporimeter form; Said ice-storage system comprises the chilled water loop that forms circulation with second evaporimeter, by-pass valve control, refrigerant pump, ice-storage equipment and plate type heat exchanger; Said first evaporimeter and plate type heat exchanger form the chilled water circuit of the circulation of separate connection respectively with shared chilled water pump, by-pass valve control, water knockout drum, end-equipment and water collector respectively, and said end-equipment is connected with the air-conditioning that needs cooling.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system can also be:
Said lithium bromide absorbs the circulatory system and comprises the circulatory system of being made up of absorber, solution pump, heat exchanger and generator; Said absorber two ends are connected with said solution pump with said first evaporimeter respectively; Said heat exchanger one side both ends connect the two ends of said generator, and the opposite side both ends of said heat exchanger connect absorber and solution pump respectively.
Be provided with by-pass valve control between said absorber and the hot device of said heat exchange.
Said by-pass valve control is an electrically operated valve, and said electrically operated valve all is connected with controller, the open and close of said each by-pass valve control of controller control.
The said chilled water pump that connects successively, first valve, first evaporimeter, the 4th valve, second condenser, the 5th valve and said chilled water pump form the ice making chilled water circuit, and said ice making chilled water circuit can be used as said electricity refrigeration chilled(cooling) water return (CWR) when cryogenic freezing water or ice making are provided.
The lithium bromide absorption cold that first evaporimeter of the said chilled water pump that connects successively, first valve, said refrigeration system with lithium bromide absorption, the 3rd valve, water knockout drum, end-equipment, water collector and said chilled water pump form circulation freezes water loop, and said chilled water pump, second valve, said plate type heat exchanger, said water knockout drum, said end-equipment, said water collector and said chilled water pump form the electricity refrigeration chilled water circuit of circulation.
First cooling tower that connects successively in the said refrigeration system with lithium bromide absorption, said first cooling water pump, first condenser and said first cooling tower form the but water loop of lithium bromide absorption cold of circulation, and said first condenser that connects successively, first throttle device, first evaporimeter, said lithium bromide absorb the circulatory system and form the temperature that lithium bromide absorption cold water unit heats up to the cooling water in the said chilled(cooling) water return (CWR) and reduces the chilled water in the said chilled water circuit.
Second cooling tower, second cooling water pump, the tenth valve, second condenser the 11 valve, second cooling tower that connects successively in the said electric refrigeration system forms electric refrigeration chilled(cooling) water return (CWR), comprises that said second condenser, second throttling arrangement, second evaporimeter and compressor form the electric refrigerating machine group cooling water intensification in the said electricity refrigeration chilled(cooling) water return (CWR) is lowered the temperature to the refrigerant in the refrigerant loop simultaneously.
The refrigerant pump that connects successively, second evaporimeter, the 6th valve, ice-storage equipment, the 9th valve and said refrigerant pump form ice-reserving chilled water loop; The electricity refrigeration ice-reserving associating chilled water loop that refrigerant pump, second evaporimeter, intervening vaive group, the 8th valve and the plate type heat exchanger that connects successively, refrigerant pump form, said intervening vaive group comprises the branch road that the 7th parallelly connected valve branch road and said the 6th valve and said ice-storage equipment are formed.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Owing to comprise refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system; Said refrigeration system with lithium bromide absorption comprises that but water loop and the lithium bromide that is connected successively absorb the lithium bromide absorption cold matchmaker loop of the circulation that the circulatory system, first condenser, first throttle device and first evaporimeter form for the lithium bromide absorption cold that formed by first cooling tower, first cooling water pump, first condenser; Said electric refrigeration system comprises the electric refrigeration refrigerant loop of the circulation that the electricity refrigeration chilled(cooling) water return (CWR) that forms circulation by second cooling tower, by-pass valve control, second cooling water pump and second condenser and the compressor that is connected successively, second condenser, second throttling arrangement, second evaporimeter form; Said ice-storage system comprises the chilled water loop that forms circulation with second evaporimeter, by-pass valve control, refrigerant pump, ice-storage equipment and plate type heat exchanger; Said first evaporimeter and plate type heat exchanger form the chilled water circuit of the circulation of separate connection respectively with shared chilled water pump, by-pass valve control, water knockout drum, end-equipment and water collector respectively, and said end-equipment is connected with the air-conditioning that needs cooling.Therefore the advantage that has in terms of existing technologies is; In grassroot project; Had when both having had the refrigeration system with lithium bromide absorption cooling efficient, can high cooling, energy consumption is low, energy utilization rate is high, power consumption is few advantage, the cryogenic freezing water that is lower than 0 ℃ can be provided again simultaneously.In addition, can also be in low power consumption the ice making cold-storage.Both cooling separately of refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system simultaneously; Can make up cooling again; Enlarged cooling amount and the cooling mode and the cooling scope of system, the raising system tackles the ability of load variations, has strengthened the security reliability of system.And system no longer need be equipped with subsequent use low-temperature receiver, reduced initial investment, avoided the idleness of equipment and the wasting of resources, and the effect that energy-conservation joint takes is obvious.
Description of drawings
Fig. 1 superposition type lithium bromide refrigerating of the present invention and cold accumulation system sketch map.
The figure number explanation
1 ... Absorber 2 ... First condenser 3 ... The first throttle device
4 ... First evaporimeter 5 ... First cooling tower 6 ... First cooling water pump
7 ... Chilled water pump 8 ... Water knockout drum 9 ... Water collector
10 ... End-equipment 11 ... Compressor 12 ... Second condenser
13 ... Second throttling arrangement 14 ... Second evaporimeter 15 ... Ice-storage equipment
16 ... Plate type heat exchanger 17 ... Refrigerant pump 18 ... Second cooling tower
19 ... Second cooling water pump 20 ... Lithium bromide absorption cold water unit 21 ... The electric refrigerating machine group
22 ... First valve 23 ... Second valve 24 ... The 3rd valve
25 ... The 4th valve 26 ... The 5th valve 27 ... The 6th valve
28 ... The 7th valve 29 ... The 8th valve 30 ... The 9th valve
31 ... The tenth valve 32 ... The 11 valve 33 ... Solution pump
34 ... Heat exchanger 35 ... Generator 36 ... The 12 valve
The specific embodiment
Below in conjunction with Fig. 1 of accompanying drawing to superposition type lithium bromide refrigerating of the present invention and cold accumulation system and utilize this superposition type lithium bromide refrigerating and cold accumulation system that the method for air-conditioning cooling is done further explain.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; Comprise refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system; Said refrigeration system with lithium bromide absorption comprise the lithium bromide absorption cold that forms by first cooling tower 5, first cooling water pump 6, first condenser 2 but water loop with comprise that the lithium bromide that is connected successively absorbs the lithium bromide absorption cold matchmaker loop of the circulation that the circulatory system, first condenser 2, first throttle device 3 and first evaporimeter 4 form; Said electric refrigeration system comprises the electricity refrigeration chilled(cooling) water return (CWR) that forms circulation by second cooling tower 18, by-pass valve control, second cooling water pump 19 and second condenser 12 and the electric refrigeration refrigerant loop that comprises that the compressor that is connected successively 11, second condenser 12, second throttling arrangement 13 and second evaporimeter 14 form; Said ice-storage system comprises the chilled water loop that forms circulation with second evaporimeter 14, by-pass valve control, refrigerant pump 17, ice-storage equipment 15 and plate type heat exchanger 16; Said first evaporimeter 4 forms the chilled water circuit of the circulation of separate connection respectively with shared chilled water pump 7, by-pass valve control, water knockout drum 8, end-equipment 10 and water collector 9 respectively with plate type heat exchanger 16, and said end-equipment 10 is connected with the air-conditioning that needs cooling.Therefore the advantage that has in terms of existing technologies is; In grassroot project; Had when both having had the refrigeration system with lithium bromide absorption cooling efficient, can high cooling, energy consumption is low, energy utilization rate is high, power consumption is few advantage, the cryogenic freezing water that is lower than 0 ℃ can be provided again simultaneously.In addition, can also be in low power consumption the ice making cold-storage.Both cooling separately of refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system simultaneously; Can make up cooling again; Enlarged cooling amount and the cooling mode and the cooling scope of system, the raising system tackles the ability of load variations, has strengthened the security reliability of system.And system no longer need be equipped with subsequent use low-temperature receiver, reduced initial investment, avoided the idleness of equipment and the wasting of resources, and the effect that energy-conservation joint takes is obvious.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; Technique scheme specifically can be that the said lithium bromide absorption circulatory system comprises the circulatory system of being made up of absorber 1, solution pump 33, heat exchanger 34 and generator 35; Said absorber 1 two ends are connected with said solution pump 33 with said first evaporimeter 4 respectively; Said heat exchanger 34 1 side both ends connect the two ends of said generator 35, and the opposite side both ends of said heat exchanger 34 connect absorber 1 and solution pump 33 respectively.During use; In the absorber 1 bromize lithium concentrated solution is housed, the refrigerant in first evaporimeter 4 is a water vapour, after in the water vapour entering absorber 1; Bromize lithium concentrated solution absorbs water vapour and becomes bromize lithium dilute solution; Solution pump 33 extracts bromize lithium dilute solution and gets in the heat exchanger 34 and final the entering in the generator 35 from absorber 1, generator 35 is heated, and the water evaporates in the bromize lithium dilute solution gets in first condenser 2 and participates in circulation; And the bromize lithium concentrated solution after concentrating gets in the absorber 1 via heat exchanger 34 again, so that accomplish circulation.Further optimized technical scheme is to be provided with by-pass valve control between said absorber and the hot device of said heat exchange.The effect of by-pass valve control is to reduce the repetition circuit as far as possible, uses public line, saves and just dresses up this.This by-pass valve control as shown in the figure is the 12 valve 36.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system please refer to Fig. 1, and technique scheme specifically can be that said by-pass valve control is an electrically operated valve, and said electrically operated valve all is connected with controller, the open and close of said each by-pass valve control of controller control.The advantage that electrically operated valve is set is electronic control; Can directly control the opening and closing of each by-pass valve control and then the cooling alone or in combination and the ice making of control refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system by single-chip microcomputer or computer chip; Can realize nine kinds of operating modes; It is convenient to regulate control, is convenient to operation.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; On the basis of technique scheme can also be: the said chilled water pump that connects successively 7, first valve 22, first evaporimeter 4, the 4th valve 25, second condenser and the 5th valve 26 and said chilled water pump 7 form the ice making chilled water circuits, and said ice making chilled water circuit can be used as electricity refrigeration chilled(cooling) water return (CWR) when cryogenic freezing water or ice making are provided.Like this; Circulate through getting in first condenser 2 through the 4th valve 25 backs again after 4 coolings of first valve, 22 entering, first evaporimeter after getting into chilled water pumps 7 through the 5th valve 26 backs in chilled water in ice making chilled water circuit temperature rising back in second condenser 12; When cryogenic freezing water or ice making; Do not use second cooling tower 18, directly, save the energy by the chilled(cooling) water return (CWR) of above-mentioned ice making chilled water circuit as the electricity refrigeration.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; Further preferred scheme is on the basis of technique scheme: the lithium bromide absorption cold that first evaporimeter 4 of the said chilled water pump that connects successively 7, first valve 22, said refrigeration system with lithium bromide absorption, the 3rd valve 24, water knockout drum 8, end-equipment 10, water collector 9 and said chilled water pump 7 form circulation freezes water loop, and said chilled water pump 7, second valve 23, said plate type heat exchanger 16, said water knockout drum 8, said end-equipment 10, said water collector 9 and said chilled water pump 7 form the electricity refrigeration chilled water circuit of circulation.Lithium bromide absorption cold freezes the air-conditioning cooling that chilled water can circulate end-equipment 10 is connected in the water loop like this.And the air-conditioning cooling that the chilled water in the electricity refrigeration chilled water circuit also can circulate end-equipment 10 is connected is realized refrigeration system with lithium bromide absorption and electric refrigeration system associating cooling.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; On the basis of technique scheme can also be: first cooling tower 5 that connects successively in the said refrigeration system with lithium bromide absorption, said first cooling water pump 6, first condenser 2 and said first cooling tower 5 form the but water loop of lithium bromide absorption cold of circulation, and said first condenser 2 that connects successively, first throttle device 3, first evaporimeter 4, said lithium bromide absorb the circulatory system and form the temperature that cooling water in 20 pairs of said chilled(cooling) water return (CWR)s of lithium bromide absorption cold water unit heats up and reduces the interior chilled water of said chilled water circuit.Such chilled(cooling) water return (CWR) is frozen water loop with lithium bromide absorption cold and is combined and can carry out cooling to the air-conditioning that is connected with said end-equipment 10 separately.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; On the basis of technique scheme can also be: state in the electric refrigeration system second cooling tower 18 that connects successively, second cooling water pump 19, the tenth valve 31, second condenser the 12, the 11 valve 32, second cooling tower 18 forms electricity refrigeration chilled(cooling) water return (CWR)s, comprise that said second condenser 12, second throttling arrangement 13, second evaporimeter 14 and compressor 11 form the electric refrigerating machine groups and the cooling water in the said electricity refrigeration chilled(cooling) water return (CWR) is heated up simultaneously the refrigerant in the refrigerant loop lowered the temperature.Like this, electricity refrigeration chilled(cooling) water return (CWR) and refrigerant loop and the electricity chilled water circuit that freezes is combined into and makes the electricity consumption refrigeration system pair air-conditioning that is connected with said end-equipment 10 carry out cooling separately.Further optimized technical scheme is to be provided with second throttling arrangement between said second condenser 12 and said second evaporimeter 14.The effect that throttling arrangement is set is throttling, makes that refrigerant intensification and cooling efficient are higher.
Superposition type lithium bromide refrigerating of the present invention and cold accumulation system; Please refer to Fig. 1; On the basis of technique scheme can also be: the refrigerant pump that connects successively 17, second evaporimeter 14, the 6th valve 27, ice-storage equipment 15, the 9th valve 30 and said refrigerant pump 17 form ice-reserving chilled water loops; The branch road that the 7th valve 28 branch roads and said the 6th valve 27 that the electricity refrigeration ice-reserving associating chilled water loop that the refrigerant pump that connects successively 17, second evaporimeter 14, intervening vaive group, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form, said intervening vaive group comprise parallel connection and said ice-storage equipment 15 are formed.Combine with electricity refrigeration chilled water circuit so again and realize that ice storage system and electric refrigeration system combine the air-conditioning that is connected with said end-equipment 10 is carried out cooling, make separately that perhaps the ice-storage equipment 15 in the ice storage system carries out ice making.
Superposition type ice-storage air-conditioning equipment of the present invention can have nine kinds of operating modes when moving.
Concrete nine kinds of operating modes are:
(1), provides and be lower than 0 ℃ of chilled water or efficient ice making operating mode: close second valve 23, the 3rd valve 24, the 7th valve 28, the 8th valve 29, the tenth valve the 31, the 11 valve 32 this moment.The but water loop operation of lithium bromide absorption cold of the circulation that forms by first cooling tower 5, first cooling water pump 6, first condenser 2, first cooling tower 5; Make refrigerant temperature decline in the condenser 2 of winning; 20 operations of lithium bromide absorption cold water unit; The ice making chilled water circuit operation that is formed by the chilled water pump that connects successively 7, first valve 22, first evaporimeter 4, the 4th valve 25 and second condenser 12, the 5th valve 26 and chilled water pump 7 makes that chilled water temperatures descend in the evaporimeter 4 of winning, and then makes that chilled water temperatures rise in second condenser 12, moves electric refrigerating machine group 21; Make the refrigerant temperature in second condenser 12 descend; And refrigerant temperatures rise in second evaporimeter 14, and forms ice-reserving chilled water loop operation by refrigerant pump 17, second evaporimeter 14, the 6th valve 27, ice-storage equipment 15, the 9th valve 30 and said refrigerant pump 17 this moment, makes the temperature of second evaporimeter, 14 interior chilled waters be reduced to subzero 5 ℃; Ice making in ice-storage equipment 15 then; The higher chilled water of back temperature gets into refrigerant pump 17 circular flows through the 9th valve 30, owing to be that refrigeration system with lithium bromide absorption and electric refrigeration system are all moved ice making at this moment, so ice making efficient is high; Carry out ice-reserving when being used for low power consumption and can more effectively save the energy and the electricity charge so that ice-reserving efficient is higher.
(2), electric refrigeration system ice making operating mode: at this moment, close first valve 22, second valve 23, the 3rd valve 24, the 4th valve 25, the 5th valve 26, the 7th valve 28, the 8th valve 29.The electricity refrigeration chilled(cooling) water return (CWR) operation of the circulation that second cooling tower 18 that connects successively, second cooling water pump 19, the tenth valve 31, second condenser the 12, the 11 valve 32 and second cooling tower 18 form; Make the cooling water temperature in second condenser 12 raise; 21 operations of electric refrigerating machine group; Make second condenser, 12 interior refrigerant temperatures descend and refrigerant temperatures rising in second evaporimeter 14; Operation forms ice-reserving chilled water loop by the refrigerant pump that connects successively 17, second evaporimeter 14, the 6th valve 27, ice-storage equipment 15, the 9th valve 30 and said refrigerant pump 17 and moves; Make the temperature of second evaporimeter, 14 interior chilled waters be reduced to subzero 5 ℃, ice making in ice-storage equipment 15 then, the higher chilled water of back temperature gets into refrigerant pumps 17 circulations through the 9th valve 30 to carry out; Owing to be electric refrigeration system operation ice making at this moment, carry out ice-reserving when being used for low power consumption and can save the energy and the electricity charge.
(3), ice-storage equipment 15 independent cooling operating modes: the electricity refrigeration ice-reserving by the refrigerant pump that connects successively 17, second evaporimeter 14, intervening vaive group, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form is united the chilled water loop; Said intervening vaive group comprises the 7th valve 28 branch roads of parallel connection and the branch road of said the 6th valve 27 and said ice-storage equipment 15 compositions; Make the temperature of second evaporimeter, 14 interior chilled waters be reduced to subzero 5 ℃; Ice making and make that the chilled water temperature in the plate type heat exchanger 16 is very low in ice-storage equipment 15 then; In plate type heat exchanger 16, make the temperature of chilled water reduce; The chilled water circuit chilled water that temperature is lower of the circulation that is formed by the chilled water pump that connects successively 7, second valve 23, plate type heat exchanger 16, water knockout drum 8, end-equipment 10, water collector 9 and chilled water pump 7 again is delivered to end-equipment 10 to the air-conditioning cooling; At this, the branch road effect of the 7th valve 28 is to regulate the flow of chilled water.
(4), the independent cooling operating mode of refrigeration system with lithium bromide absorption: first cooling tower 5 that connects successively in the refrigeration system with lithium bromide absorption, said first cooling water pump 6, first condenser 2 and said first cooling tower 5 form the but water loop of lithium bromide absorption cold of circulation; Said first condenser 2 that connects successively, first throttle device 3, first evaporimeter 4, said lithium bromide absorb the circulatory system and form lithium bromide absorption cold water unit 20; The lithium bromide absorption cold that forms circulation in conjunction with first evaporimeter 4 of the said chilled water pump that connects successively 7, first valve 22, said refrigeration system with lithium bromide absorption, the 3rd valve 24, water knockout drum 8, end-equipment 10, water collector 9 and said chilled water pump 7 freezes water loop; Cooling water heats up with cooling water in 20 pairs of said chilled(cooling) water return (CWR)s of lithium bromide absorption cold water unit and reduces the temperature of the interior chilled water of said chilled water circuit in the cooling tower like this, and the chilled water of low temperature carries out cooling to the air-conditioning of its end-equipment of flowing through 10 connections.
(5) the independent cooling operating mode of electric refrigeration system: second cooling tower 18 that connects successively, second cooling water pump 19, the tenth valve 31, second condenser 12 the 11 valve 32, second cooling tower 18 form electricity refrigeration chilled(cooling) water return (CWR)s; Comprise that said second condenser 12, second throttling arrangement 13, second evaporimeter 14 and compressor 11 form the electric refrigerating machine groups; With the chilled water loop that refrigerant pump 17, second evaporimeter 14, the 7th valve 28, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form, combine said chilled water pump 7, second valve 23, said plate type heat exchanger 16, said water knockout drum 8, said end-equipment 10, said water collector 9 and said chilled water pump 7 to form the electricity refrigeration chilled water circuit of circulation again.Second cooling tower 18 makes second evaporimeter, 14 interior cooling water temperature rising refrigerant temperatures descend with electric refrigerating machine group 21; And then make second evaporimeter, 14 interior refrigerant temperatures rise; And chilled water temperature reduces; Make chilled water temperature in the plate type heat exchanger 16 rise and then reduce the temperature of chilled water that this chilled water carries out cooling to the air-conditioning that its end-equipment of flowing through 10 connects.
(6), refrigeration system with lithium bromide absorption and ice storage system associating cooling operating mode: first cooling tower 5 that is connected successively in the refrigeration system with lithium bromide absorption, said first cooling water pump 6, first condenser 2 and said first cooling tower 5 form the but water loop of lithium bromide absorption cold that circulates; Said first condenser 2 that connects successively, first throttle device 3, first evaporimeter 4, said lithium bromide absorb the circulatory system and form lithium bromide absorption cold water unit 20; The lithium bromide absorption cold that forms circulation in conjunction with first evaporimeter 4 of the said chilled water pump that connects successively 7, first valve 22, said refrigeration system with lithium bromide absorption, the 3rd valve 24, water knockout drum 8, end-equipment 10, water collector 9 and said chilled water pump 7 freezes water loop; Cooling water heats up with cooling water in 20 pairs of said chilled(cooling) water return (CWR)s of lithium bromide absorption cold water unit and reduces the temperature of the interior chilled water of said chilled water circuit in the cooling tower like this, and the chilled water of low temperature carries out cooling to the air-conditioning of its end-equipment of flowing through 10 connections.Add that simultaneously the electricity refrigeration ice-reserving that is formed by the refrigerant pump that connects successively 17, second evaporimeter 14, intervening vaive group, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 unites the chilled water loop; Said intervening vaive group comprises the 7th valve 28 branch roads of parallel connection and the branch road of said the 6th valve 27 and said ice-storage equipment 15 compositions; Make the temperature of second evaporimeter, 14 interior chilled waters be reduced to subzero 5 ℃; Ice making and make that the chilled water temperature in the plate type heat exchanger 16 is very low in ice-storage equipment 15 then; In plate type heat exchanger 16, make the temperature of chilled water reduce; The chilled water circuit chilled water that temperature is lower of the circulation that is formed by the chilled water pump that connects successively 7, second valve 23, plate type heat exchanger 16, water knockout drum 8, end-equipment 10, water collector 9 and chilled water pump 7 again is delivered to end-equipment 10 to the air-conditioning cooling; At this, the branch road effect of the 7th valve 28 is to regulate the flow of chilled water.The advantage of this operating mode is that refrigeration system with lithium bromide absorption and ice-storage equipment 15 combine cooling, and efficient is higher, effectively saves the energy.
(7), electric refrigeration system and ice storage system associating cooling operating mode: second cooling tower 18 that is connected successively, second cooling water pump 19, the tenth valve 31, second condenser the 12, the 11 valve 32, second cooling tower 18 form the electricity chilled(cooling) water return (CWR)s of freezing; Comprise that said second condenser 12, second throttling arrangement 13, second evaporimeter 14 and compressor 11 form electric refrigerating machine groups 21; With the chilled water loop that refrigerant pump 17, second evaporimeter 14, the 7th valve 28, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form, combine said chilled water pump 7, second valve 23, said plate type heat exchanger 16, said water knockout drum 8, said end-equipment 10, said water collector 9 and said chilled water pump 7 to form the electricity refrigeration chilled water circuit of circulation again.Second cooling tower 18 makes second evaporimeter, 14 interior cooling water temperature rising refrigerant temperatures descend with electric refrigerating machine group 21; And then make second evaporimeter, 14 interior refrigerant temperatures rise; And chilled water temperature reduces; Make chilled water temperature in the plate type heat exchanger 16 rise and then reduce the temperature of chilled water that this chilled water carries out cooling to the air-conditioning that its end-equipment of flowing through 10 connects.Combine simultaneously to unite the chilled water loop by the electricity refrigeration ice-reserving that the refrigerant pump that connects successively 17, second evaporimeter 14, intervening vaive group, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form; Said intervening vaive group comprises the 7th valve 28 branch roads of parallel connection and the branch road of said the 6th valve 27 and said ice-storage equipment 15 compositions; Make the temperature of second evaporimeter, 14 interior chilled waters be reduced to subzero 5 ℃; Ice making and make that the chilled water temperature in the plate type heat exchanger 16 is very low in ice-storage equipment 15 then; In plate type heat exchanger 16, make the temperature of chilled water reduce; The chilled water circuit chilled water that temperature is lower of the circulation that is formed by the chilled water pump that connects successively 7, second valve 23, plate type heat exchanger 16, water knockout drum 8, end-equipment 10, water collector 9 and chilled water pump 7 again is delivered to end-equipment 10 to the air-conditioning cooling; At this, the branch road effect of the 7th valve 28 is to regulate the flow of chilled water.Be exactly that just electric refrigeration system and ice storage system combine and carry out cooling like this, effectively save the energy and the electricity charge.
(8), refrigeration system with lithium bromide absorption and electric refrigeration system associating cooling: first cooling tower 5 that is connected successively in the refrigeration system with lithium bromide absorption, said first cooling water pump 6, first condenser 2 and said first cooling tower 5 form the but water loop of lithium bromide absorption cold that circulates; Said first condenser 2 that connects successively, first throttle device 3, first evaporimeter 4, said lithium bromide absorb the circulatory system and form lithium bromide absorption cold water unit 20; The lithium bromide absorption cold that forms circulation in conjunction with first evaporimeter 4 of the said chilled water pump that connects successively 7, first valve 22, said refrigeration system with lithium bromide absorption, the 3rd valve 24, water knockout drum 8, end-equipment 10, water collector 9 and said chilled water pump 7 freezes water loop; Cooling water heats up with cooling water in 20 pairs of said chilled(cooling) water return (CWR)s of lithium bromide absorption cold water unit and reduces the temperature of the interior chilled water of said chilled water circuit in the cooling tower like this, and the chilled water of low temperature carries out cooling to the air-conditioning of its end-equipment of flowing through 10 connections.Open the cooling of electric refrigeration system simultaneously; Second cooling tower 18 that promptly connects successively, second cooling water pump 19, the tenth valve 31, second condenser 12 the 11 valve 32, second cooling tower 18 form electricity refrigeration chilled(cooling) water return (CWR)s; Comprise that said second condenser 12, second throttling arrangement 13, second evaporimeter 14 and compressor 11 form the electric refrigerating machine groups; With the chilled water loop that refrigerant pump 17, second evaporimeter 14, the 7th valve 28, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form, combine said chilled water pump 7, second valve 23, said plate type heat exchanger 16, said water knockout drum 8, said end-equipment 10, said water collector 9 and said chilled water pump 7 to form the electricity refrigeration chilled water circuit of circulation again.Second cooling tower 18 makes second evaporimeter, 14 interior cooling water temperature rising refrigerant temperatures descend with electric refrigerating machine group 21; And then make second evaporimeter, 14 interior refrigerant temperatures rise; And chilled water temperature reduces; Make chilled water temperature in the plate type heat exchanger 16 rise and then reduce the temperature of chilled water that this chilled water carries out cooling to the air-conditioning that its end-equipment of flowing through 10 connects.So just can be with refrigeration system with lithium bromide absorption and the electric refrigeration system cooling of joining together, promptly can be efficiently, cooling reliably, have to be equipped with subsequent use unit, reduce cost.
(9), refrigeration system with lithium bromide absorption, electric refrigeration system and ice storage system three cooling: first cooling tower 5 that is connected successively in the refrigeration system with lithium bromide absorption, said first cooling water pump 6, first condenser 2 and said first cooling tower 5 form the but water loop of lithium bromide absorption cold of circulation; Said first condenser 2 that connects successively, first throttle device 3, first evaporimeter 4, said lithium bromide absorb the circulatory system and form lithium bromide absorption cold water unit 20; The lithium bromide absorption cold that forms circulation in conjunction with first evaporimeter 4 of the said chilled water pump that connects successively 7, first valve 22, said refrigeration system with lithium bromide absorption, the 3rd valve 24, water knockout drum 8, end-equipment 10, water collector 9 and said chilled water pump 7 freezes water loop; Cooling water heats up with cooling water in 20 pairs of said chilled(cooling) water return (CWR)s of lithium bromide absorption cold water unit and reduces the temperature of the interior chilled water of said chilled water circuit in the cooling tower like this, and the chilled water of low temperature carries out cooling to the air-conditioning of its end-equipment of flowing through 10 connections.Open the cooling of electric refrigeration system simultaneously; Second cooling tower 18 that promptly connects successively, second cooling water pump 19, the tenth valve 31, second condenser the 12, the 11 valve 32, second cooling tower 18 form electricity refrigeration chilled(cooling) water return (CWR)s; Comprise that said second condenser 12, second throttling arrangement 13, second evaporimeter 14 and compressor 11 form the electric refrigerating machine groups; With the chilled water loop that refrigerant pump 17, second evaporimeter 14, the 7th valve 28, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 form, combine said chilled water pump 7, second valve 23, said plate type heat exchanger 16, said water knockout drum 8, said end-equipment 10, said water collector 9 and said chilled water pump 7 to form the electricity refrigeration chilled water circuit of circulation again.Second cooling tower 18 makes second evaporimeter, 14 interior cooling water temperature rising refrigerant temperatures descend with electricity refrigeration 21; And then make second evaporimeter, 14 interior refrigerant temperatures rise; And chilled water temperature reduces; Make chilled water temperature in the plate type heat exchanger 16 rise and then reduce the temperature of chilled water that this chilled water carries out cooling to the air-conditioning that its end-equipment of flowing through 10 connects.Also carry out the cooling of ice storage system simultaneously; The electricity refrigeration ice-reserving that is promptly formed by the refrigerant pump that connects successively 17, second evaporimeter 14, intervening vaive group, the 8th valve 29 and plate type heat exchanger 16, refrigerant pump 17 is united the chilled water loop; Said intervening vaive group comprises the 7th valve 28 branch roads of parallel connection and the branch road of said the 6th valve 27 and said ice-storage equipment 15 compositions; Make the temperature of second evaporimeter, 14 interior chilled waters be reduced to subzero 5 ℃; Ice making and make that the chilled water temperature in the plate type heat exchanger 16 is very low in ice-storage equipment 15 then; In plate type heat exchanger 16, make the temperature of chilled water reduce; The chilled water circuit chilled water that temperature is lower of the circulation that is formed by the chilled water pump that connects successively 7, second valve 23, plate type heat exchanger 16, water knockout drum 8, end-equipment 10, water collector 9 and chilled water pump 7 again is delivered to end-equipment 10 and gives the air-conditioning cooling, and at this, the branch road effect of the 7th valve 28 is flows of adjusting chilled water.Like this, in peak of power consumption period, cold if desired is very big; Can start three's cooling simultaneously, promptly save a part of electricity charge, the cold of q.s can be provided again efficiently, reliably; Enlarge the cooling scope of system, also improved the ability of system's reply load variations simultaneously.
Above-mentionedly only several kinds of specific embodiments among the present invention are explained; But can not be as protection scope of the present invention; Every equivalence variation of having done according to the design spirit among the present invention or modification or equal proportion are amplified or are dwindled etc., all should think to fall into protection scope of the present invention.
Claims (9)
1. superposition type lithium bromide refrigerating and cold accumulation system; It is characterized in that: comprise refrigeration system with lithium bromide absorption, electric refrigeration system and ice-storage system; Said refrigeration system with lithium bromide absorption comprises that but water loop and the lithium bromide that is connected successively absorb the lithium bromide absorption cold matchmaker loop of the circulation that the circulatory system, first condenser, first throttle device and first evaporimeter form for the lithium bromide absorption cold that formed by first cooling tower, first cooling water pump, first condenser; Said electric refrigeration system comprises the electric refrigeration refrigerant loop of the circulation that the electricity refrigeration chilled(cooling) water return (CWR) that forms circulation by second cooling tower, by-pass valve control, second cooling water pump and second condenser and the compressor that is connected successively, second condenser, second throttling arrangement, second evaporimeter form; Said ice-storage system comprises the chilled water loop that forms circulation with second evaporimeter, by-pass valve control, refrigerant pump, ice-storage equipment and plate type heat exchanger; Said first evaporimeter and plate type heat exchanger form the chilled water circuit of the circulation of separate connection respectively with shared chilled water pump, by-pass valve control, water knockout drum, end-equipment and water collector respectively, and said end-equipment is connected with the air-conditioning that needs cooling.
2. superposition type lithium bromide refrigerating according to claim 1 and cold accumulation system; It is characterized in that: said lithium bromide absorbs the circulatory system and comprises the circulatory system of being made up of absorber, solution pump, heat exchanger and generator; Said absorber two ends are connected with said solution pump with said first evaporimeter respectively; Said heat exchanger one side both ends connect the two ends of said generator, and the opposite side both ends of said heat exchanger connect absorber and solution pump respectively.
3. superposition type lithium bromide refrigerating according to claim 2 and cold accumulation system is characterized in that: be provided with by-pass valve control between said absorber and the hot device of said heat exchange.
4. according to claim 1 or 2 or 3 described superposition type lithium bromide refrigerating and cold accumulation systems, it is characterized in that: said by-pass valve control is an electrically operated valve, and said electrically operated valve all is connected with controller, the open and close of said each by-pass valve control of controller control.
5. according to claim 1 or 2 or 3 described superposition type lithium bromide refrigerating and cold accumulation systems; It is characterized in that: the said chilled water pump that connects successively, first valve, first evaporimeter, the 4th valve, second condenser, the 5th valve and said chilled water pump form the ice making chilled water circuit, and said ice making chilled water circuit can be used as said electricity refrigeration chilled(cooling) water return (CWR) when cryogenic freezing water or ice making are provided.
6. according to claim 1 or 2 or 3 described superposition type lithium bromide refrigerating and cold accumulation systems; It is characterized in that: the lithium bromide absorption cold that first evaporimeter of the said chilled water pump that connects successively, first valve, said refrigeration system with lithium bromide absorption, the 3rd valve, water knockout drum, end-equipment, water collector and said chilled water pump form circulation freezes water loop, and said chilled water pump, second valve, said plate type heat exchanger, said water knockout drum, said end-equipment, said water collector and said chilled water pump form the electricity refrigeration chilled water circuit of circulation.
7. superposition type lithium bromide refrigerating according to claim 6 and cold accumulation system; It is characterized in that: first cooling tower that connects successively in the said refrigeration system with lithium bromide absorption, said first cooling water pump, first condenser and said first cooling tower form the but water loop of lithium bromide absorption cold of circulation, and said first condenser that connects successively, first throttle device, first evaporimeter, said lithium bromide absorb the circulatory system and form the temperature that lithium bromide absorption cold water unit heats up to the cooling water in the said chilled(cooling) water return (CWR) and reduces the chilled water in the said chilled water circuit.
8. superposition type lithium bromide refrigerating according to claim 6 and cold accumulation system; It is characterized in that: second cooling tower, second cooling water pump, the tenth valve, second condenser the 11 valve, second cooling tower that connects successively in the said electric refrigeration system forms electric refrigeration chilled(cooling) water return (CWR), comprises that said second condenser, second throttling arrangement, second evaporimeter and compressor form the electric refrigerating machine group cooling water intensification in the said electricity refrigeration chilled(cooling) water return (CWR) is lowered the temperature to the refrigerant in the refrigerant loop simultaneously.
9. superposition type lithium bromide refrigerating according to claim 6 and cold accumulation system; It is characterized in that: the refrigerant pump that connects successively, second evaporimeter, the 6th valve, ice-storage equipment, the 9th valve and said refrigerant pump form ice-reserving chilled water loop; The electricity refrigeration ice-reserving associating chilled water loop that refrigerant pump, second evaporimeter, intervening vaive group, the 8th valve and the plate type heat exchanger that connects successively, refrigerant pump form, said intervening vaive group comprises the branch road that the 7th parallelly connected valve branch road and said the 6th valve and said ice-storage equipment are formed.
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| CN2012101250965A CN102628624A (en) | 2012-04-25 | 2012-04-25 | Cascade lithium bromide refrigeration and cold storage system |
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| CN2012101250965A CN102628624A (en) | 2012-04-25 | 2012-04-25 | Cascade lithium bromide refrigeration and cold storage system |
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| CN109883079A (en) * | 2019-03-18 | 2019-06-14 | 华南理工大学 | A kind of absorption compression interactive cold type composite refrigeration system and method again |
| CN109883079B (en) * | 2019-03-18 | 2023-05-23 | 华南理工大学 | Absorption-compression interactive sub-cooling type composite refrigeration system and method |
| CN112752490A (en) * | 2020-12-29 | 2021-05-04 | 深圳市前海能源科技发展有限公司 | Refrigeration system and device |
| CN114061171A (en) * | 2021-11-05 | 2022-02-18 | 红塔烟草(集团)有限责任公司 | Lithium bromide refrigerator system with cooling water temperature control device |
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