CN102353206B - Cold-storage-type refrigeratory with solar adsorption refrigeration - Google Patents
Cold-storage-type refrigeratory with solar adsorption refrigeration Download PDFInfo
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- CN102353206B CN102353206B CN 201110231628 CN201110231628A CN102353206B CN 102353206 B CN102353206 B CN 102353206B CN 201110231628 CN201110231628 CN 201110231628 CN 201110231628 A CN201110231628 A CN 201110231628A CN 102353206 B CN102353206 B CN 102353206B
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Abstract
The invention discloses a cold-storage-type refrigeratory with solar adsorption refrigeration. The refrigeratory is characterized in that six adsorbent beds form an absorption refrigeration generator, wherein five adsorbent beds are in a cooling adsorption state, and the other one is in a heating desorption state and used for generating a refrigerant gas by desorption; by utilizing ammonia as a refrigerant, a condenser, an enlarged storage tank, a throttling valve, a refrigeratory containing an evaporator and the adsorbent beds are connected for refrigeration; by utilizing steam generated by a solar steam boiler as a heat source, the generator of six adsorbent beds is used for absorbing and desorbing the ammonia, thereby forming an ammonia circulating refrigerating loop; and a PLC (programmable logic controller) is used for carrying out programmed control on an vapour input sequencing valve group, a condensate water recovery sequencing valve group, a cooling water input sequencing valve group and a cooling water discharge sequencing valve group, thereby ensuring that the vapour input, the water recovery, the cooling water input, and the cooling water discharge all accord with a set program, so that the generator of the six adsorbent beds can carry out the cooling adsorption and heating desorption according to the set program, thereby achieving the scheduled adsorption refrigerating effect.
Description
Technical field
The present invention relates to a kind of adsorb refrigerating device, be specifically related to the cold storage type solar adsorption-type refrigerating freezer with the liquid reservoir of six adsorbent beds and increasing.
Technical background
Solar energy is a kind of inexhaustible green energy resource, is absorption refrigeration technical field dream for many years with the absorption refrigeration freezer of Driven by Solar Energy.But, due to solar energy at diel the continuity in the time, stability bad, and the impact of Changes in weather, add the freezer normal operation and should guarantee that its evaporating temperature reaches-30 ℃ with inferior factor, make present absorption refrigeration technology under the condition take solar energy as driving force, can not realize the normal operation of freezer.The solar powered adsorption refrigeration freezer is difficult to realization on engineering, existing freezer is motor compressor formula freezer.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of above-mentioned existing absorption refrigeration technology existence, a kind of cold storage type solar adsorption-type refrigerating freezer is provided, the steam that the present invention utilizes the solar energy steam boiler to provide, use " multigenerator absorption refrigeration principle ", drive cold storage type six adsorbent bed absorbing refrigeration systems with steam, drive the operation of absorption refrigeration freezer, make that in freezer, the ammonia evaporating temperature reaches below-30 ℃, and have enough refrigerating capacitys.The receiver of six adsorbent beds and increasing is the peculiar structure of cold storage type, and this cold storage type structure can be without the normal operation of keeping the absorption type refrigerating freezer night of solar energy.Recently come, by the development of sky solar energy heating technology, the solar energy steam boiler patented product of prior art maturation is supplied market, satisfies the present invention to the specification requirement of the steam thermal source of sun the subject of knowledge and the object of knowledge generation.this cold storage type solar powered adsorption refrigeration freezer is when realizing that the ammonia evaporating temperature reaches below-30 ℃, has enough large refrigerating capacity, and the continuity of refrigeration is better with stability, the cryogenic temperature fluctuation is less, be used for the area that day solar energy enriches, to substitute traditional motor compressor formula refrigeration freezer, more applicable without the electrical network area, reach and utilize solar energy to carry out the energy-conservation of freezer refrigerating, reduce discharging, the purpose of environmental protection, for enriching the area, solar energy opens up the green energy resource freezer, satisfy the abundant regional requirement to the solar energy freezer of solar energy, make food, agricultural byproducts freezing, cold storing and fresh-keeping a kind of solar energy that utilizes occurs as the new way of the energy.
Technical scheme of the present invention is:
cold storage type solar adsorption-type refrigerating freezer, comprise six adsorbent beds (1, 2, 3, 4, 5, 6), two check valve set (7, 8), condenser 9, the receiver 10 that strengthens, choke valve 11, the freezer 13 that includes evaporimeter 12, PLC Programmable Logic Controller 70, solar thermal collector 14, solar energy steam boiler 15, steam input sequencing valve group 16, condensed water reclaims sequencing valve group 17, cooling water input sequencing valve group 18, cooling water is discharged sequencing valve group 19, described six adsorbent beds (1, 2, 3, 4, 5, 6) in, the refrigerant outlet of each adsorbent bed is communicated with the refrigerant inlet end of condenser 9 through the first check valve set 7, the refrigerant outlet end of condenser 9 is communicated with the inlet of the receiver 10 that strengthens, and the port of export of the receiver that strengthens is communicated with the inlet of evaporimeter 12 in being included in freezer 13 through choke valve 11, the refrigerant outlet end of evaporimeter 12 is communicated with the refrigerant inlet separately of six adsorbent beds respectively through the second check valve set 8, steam input sequencing valve group 16 is by six electronic cap relief valves (41, 42, 43, 44, 45, 46) form, condensed water reclaims sequencing valve group 17 by six dynamoelectric water valves (51, 52, 53, 54, 55, 56) form, cooling water input sequencing valve group 18 is by six dynamoelectric water valves (61, 62, 63, 64, 65, 66) form, cooling water is discharged sequencing valve group 19 by six dynamoelectric water valves (71, 72, 73, 74, 75, 76) form, PLC Programmable Logic Controller 70 is connected with each motor-driven valve that steam input sequencing valve group 16, condensed water recovery sequencing valve group 17, cooling water input sequencing valve group 18 are connected with cooling water in sequencing valve group 19 respectively, each electronic cap relief valve and six adsorbent beds (1 in steam input sequencing valve group 16, 2, 3, 4, 5, 6) adsorbent bed corresponding in connects, condensed water reclaims each dynamoelectric water valve and six adsorbent beds (1 in sequencing valve group 17, 2, 3, 4, 5, 6) adsorbent bed corresponding in connects, each dynamoelectric water valve and six adsorbent beds (1 in cooling water input sequencing valve group 18, 2, 3, 4, 5, 6) adsorbent bed corresponding in connects, cooling water is discharged each dynamoelectric water valve and six adsorbent beds (1 in sequencing valve group 19, 2, 3, 4, 5, 6) adsorbent bed corresponding in connects, steam 36 is through steam input sequencing valve group 16 and each adsorbent bed (1, 2, 3, 4, 5, 6) be linked to be the loop, condensed water reclaims sequencing valve group 17 and each adsorbent bed (1, 2, 3, 4, 5, 6) be linked to be the loop, cooling water input sequencing valve group 18 and each adsorbent bed (1, 2, 3, 4, 5, 6) and cooling water discharge sequencing valve group 19 and be linked to be the loop, the first check valve set 7 is communicated with condenser 9, the receiver 10 that strengthens, choke valve 11, evaporimeter 12, check valve set 8, six adsorbent beds (1, 2, 3, 4, 5, 6), form refrigerant loop, produce refrigerating capacitys and supply with freezers 13 and keep freezer and normally move by being included in evaporimeter 12 in freezer 13.
Steam input sequencing valve group 16 contains six electronic cap relief valves, six corresponding six adsorbent beds of electronic cap relief valve.Condensed water reclaims sequencing valve group 17 and contains six dynamoelectric water valves, six corresponding six adsorbent beds of dynamoelectric water valve.Cooling water input sequencing valve group 18 contains six dynamoelectric water valves, six corresponding six adsorbent beds of dynamoelectric water valve, and cooling water is discharged sequencing valve group 19 and is contained six dynamoelectric water valves, six corresponding six adsorbent beds of dynamoelectric water valve.
Described adsorbent bed shell body 26 is provided with steam input pipe 20, cold-producing medium conducting pipes 39, cooling water is discharged between pipe 40, water inlet pipe 27, remaining cooling water comb 28, condensed water comb 29, drain valve 30, adsorbent bed inner housing 24 and shell body 26 is heat-insulation layer 25, be collection ammonia pipe 33 above the in-built adsorbent bed pipe group 34 that is consisted of by a plurality of unit pipes 23 of inner housing 24, pipe group.The in-built fin 21 of unit pipes 23 and adsorbent 22, fin centre have the porous core pipe 35 of up/down perforation.Space between space between unit pipes and unit pipes and inner housing is steam or cooling-water duct.The condensed water comb 29 of shell body 26 bottoms is communicated with inner housing 24.Cold-producing medium conducting pipes 39 is communicated with collection ammonia pipe 33.Steam input pipe 20 is communicated with inner housing 24.Steam input sequencing valve group 16 is connected with steam input channel 20, condensed water reclaims sequencing valve group 17 and is connected with drain valve 30, cooling water input sequencing valve group 18 is connected with cooling water inlet pipe 27, cooling water is discharged sequencing valve group 19 and is connected with cooling water discharge pipe 40, and remaining cooling water comb 28 is connected with water seal arrangement.
Six adsorbent beds of the present invention (1,2,3,4,5,6) and the receiver 10 that strengthens make system have stronger adsorption capacity, desorption ability and cold-producing medium reserve capabillity.On daytime, can utilize a certain amount of cold-producing medium ammoniacal liquor of above capacity reserve.Utilize the cold-producing medium ammoniacal liquor of deposit by the absorption refrigeration of proceeding of six adsorbent beds (1,2,3,4,5,6) batch by batch and stage by stage, to keep the normal operation of freezer at night.
Adsorbent bed used in the present invention is six adsorbent bed absorbing refrigeration systems according to " multigenerator absorption refrigeration principle " design, through being connected with the PLC Programmable Logic Controller, by setup program, can realize that an adsorbent bed is in the heating desorption state, five adsorbent beds are in the absorbing refrigeration system of cooling adsorbed state, and this system can realize ammonia evaporating temperature t
0The absorption refrigeration of≤-30 ℃, and refrigerating capacity is enough large, and the continuity of refrigeration is good, good stability, can fully satisfy the specification requirement of freezer refrigerating operation.
Simultaneously, the present invention is provided with the receiver of six adsorbent beds and an increasing in the loop of cold-producing medium, makes the ability of adsorption and desorption stronger, and can lay in refrigerant liquids in the receiver that strengthens more.Utilize the steam heat energy of solar energy steam boiler on daytime, as often as possible separate sucking-off cold-producing medium ammonia, deposit is in the receiver 10 that strengthens.At night, when not having solar energy that steam heated is provided, utilize the cold-producing medium liquefied ammonia of many deposits in the receiver that strengthens by six adsorbent beds (1,2,3,4,5,6) carry out dribs and drabs the absorption refrigeration state, still can proceed absorption refrigeration, guarantee that freezer also can normally move at night.The basic principle of cold storage type solar adsorption-type refrigerating freezer normal operation at night that Here it is.
Theoretical calculating with the experimental prototype test result of the present invention shows, under t0=-30 ℃ of condition of ammonia evaporating temperature, the above absorbing refrigeration system that consists of of six adsorbent beds and six adsorbent beds is when normal operation, and in its adsorbent bed, to contain ammonia concentration high for adsorbent, and the ammonia amount of laying in adsorbent is large.Compare with four adsorbent bed absorbing refrigeration systems and two adsorbent bed absorbing refrigeration systems, in adsorbent bed in the maximum concentration V of ammonia and adsorbent the ratio of the total ammonia amount of the highest absorption G see the following form:
(comparing take each amounts of two adsorbent bed systems as 1.00 benchmark in table)
As can be seen from the table: in six adsorbent bed absorbing refrigeration systems, its adsorbent is the highest to be contained ammonia concentration ratio two adsorbent bed systems and exceeds 189%, exceeds 39.6% than four adsorbent bed systems; In six adsorbent bed absorbing refrigeration systems, the highest adsorb ammonia amount of its adsorbent is 8.67 times of two adsorbent bed systems, is 2.09 times of four adsorbent bed systems.in six adsorbent bed absorbing refrigeration systems, it is higher that its adsorbent contains in the higher and adsorbent of ammonia concentration γ (kg ammonia/kg adsorbent) the highest adsorb ammonia amount G (kg ammonia), thereby make six adsorbent bed absorbing refrigeration systems have the specific function of a large amount of deposit cold-producing medium ammonia, this is that four adsorbent bed absorbing refrigeration systems institutes of in the past application of our company are inaccessiable, utilize heat energy that a large amount of ammonia desorptions of laying in adsorbent are condensed in the liquid reservoir of increasing, just laid in a large amount of cold-producing medium ammonia in liquid reservoir, when needed, need not under the heat energy condition, utilize desorption to the cooling suction-operated that contains the lower adsorbent of ammonia concentration, produce enough large refrigerating capacity, for freezer.The function of the deposit of the uniqueness that six adsorbent bed absorbing refrigeration systems have that Here it is, and then have the basic principle of the cold function of storage, Here it is, and four adsorbent beds and following absorbing refrigeration system thereof can't possess.
Description of drawings
Fig. 1 is that steam input sequencing valve group 16 of the present invention and condensed water reclaim sequencing valve group 17 catenation principle figure.
Fig. 2 is that cooling water input sequencing valve group 18 of the present invention and cooling water are discharged sequencing valve group 19 catenation principle figure.
Fig. 3 is cold storage type solar adsorption-type refrigerating freezer catenation principle figure of the present invention.
Fig. 4 is adsorbent bed structure figure in the present invention.
in described accompanying drawing, 1, 2, 3, 4, 5, 6--- adsorbent bed 7, 8---check valve set, 9---condenser, 10---the receiver of increasing, 11---choke valve, 12---evaporimeter is included in freezer 13, 14---solar thermal collector, 15---the solar energy steam boiler, 16---steam input sequencing valve group, 17---condensed water reclaims the sequencing valve group, 18---cooling water input sequencing valve group, 19---cooling water is discharged the sequencing valve group, 20---the steam input pipe, 21---fin, 22---adsorbent 23---unit pipes, 24---inner housing, 25---heat-insulation layer, 26---shell body, 27---cooling water inlet pipe, 28---remaining cooling water comb, 29---the condensed water comb, 30---drain valve, 31---the remaining cooling water of discharge, 32---the condensed water of recovery, 33---the collection refrigerant pipe, 34---the pipe group, 35---the porous core pipe, 36---steam, 37---be adsorbed the ammonia that enters, 38---the ammonia of desorb output, 39---the ammonia conducting pipes, 40---cooling water is discharged pipe, 41, 42, 43, 44, 45, 46---electronic cap relief valve, 51, 52, 53, 54, 55, 56---dynamoelectric water valve, 61, 62, 63, 64, 65, 66---dynamoelectric water valve, 67---the cooling water of input, 70---the PLC Programmable Logic Controller, 71, 72, 73, 74, 75, 76---dynamoelectric water valve.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.The present invention's cold-producing medium used is ammonia.as can be seen from Figure 3, use the cold storage type solar powered adsorption refrigeration freezer of six adsorbent beds, comprise six adsorbent beds (1,2,3,4,5,6), two check valve set (7,8), condenser 9, the receiver 10 that strengthens, choke valve 11, the freezer 13 that includes evaporimeter 12, PLC Programmable Logic Controller 70, solar thermal collector 14, solar energy steam boiler 15, steam input sequencing valve group 16, condensed water reclaims sequencing valve group 17, cooling water input sequencing valve group 18, cooling water is discharged sequencing valve group 19, described six adsorbent beds (1,2,3,4,5,6) in, the refrigerant outlet end of each adsorbent bed is with being communicated with the refrigerant inlet end of condenser 9 through the first check valve set 7, the refrigerant outlet end of condenser 9 is communicated with the inlet of the receiver 10 that strengthens, and the port of export of the receiver that strengthens is communicated with the inlet of evaporimeter 12 in being included in freezer 13 through choke valve 11, the refrigerant outlet end of evaporimeter 12 is communicated with the cold-producing medium conducting pipes 39 of six adsorbent beds respectively through the second check valve set 8, solar thermal collector 14 produces steam 36 with Driven by Solar Energy solar energy steam boiler 15, steam 36 enters steam input sequencing valve group 16, steam input sequencing valve group 16 is by six electric steam valves (41,42,43,44,45,46) form, PLC Programmable Logic Controller 70 is connected with each electronic cap relief valve that steam is inputted in sequencing valve group 16, each electronic cap relief valve (41 in steam input sequencing valve group 16, 42, 43, 44, 45, 46) with six adsorbent beds (1, 2, 3, 4, 5, 6) adsorbent bed corresponding in connects, and forms steam input stored program controlled, condensed water reclaims sequencing valve group 17 and is comprised of six dynamoelectric water valves (51,52,53,54,55,56), PLC Programmable Logic Controller 70 is connected with each dynamoelectric water valve that condensed water reclaims in sequencing valve group 17, each dynamoelectric water valve (51,52,53,54,55,56) during condensed water reclaims program control group 17 connects with the middle corresponding adsorbent bed of six adsorbent beds (1,2,3,4,5,6), forms condensed water and reclaims stored program controlled, steam input stored program controlled and condensed water reclaim stored program controlled and jointly consist of steam input and condensed water recycling system, thereby when guaranteeing the normal operation of cold storage type solar powered adsorption refrigeration freezer, recycle steam condensing water, improve system thermal efficiency.cooling water 67 enters cooling water input sequencing valve group 18, cooling water input sequencing valve group 18 is by six dynamoelectric water valves (61, 62, 63, 64, 65, 66) form, PLC Programmable Logic Controller 70 is connected with each dynamoelectric water valve that cooling water is inputted in sequencing valve 18, each dynamoelectric water valve (61 in cooling water input sequencing valve group 18, 62, 63, 64, 65, 66) with six adsorbent beds (1, 2, 3, 4, 5, 6) adsorbent bed corresponding in connects, form cooling water input stored program controlled, cooling water 67 is through cooling water input sequencing valve group 18 and each absorption bed (1, 2, 3, 4, 5, 6) connect, each adsorbent bed is discharged sequencing valve group 19 with cooling water and is connected, form the chilled(cooling) water return (CWR).Cold-producing medium is set out by an adsorbent bed, and through check valve set 7, condenser 9, the receiver 10, the choke valve 11 that strengthen, enter evaporimeter 12, cold-producing medium is sweat cooling in evaporimeter 12, for freezer 13 input refrigerating capacitys, keeps freezer 13 and normally moves.Described connection is all to adopt conventional communicating pipe to realize, described connection is all to adopt conventional interconnection technique to realize.Six adsorbent beds (1,2,3,4,5,6) its duty in the course of the work are separate and enter heating desorption state or cooling adsorbed state by the programme-control of setting, the programme-control of setting guarantees always have an adsorbent bed to be in the heating desorption state in six adsorbent beds (1,2,3,4,5,6), all the other five adsorbent beds are in cooling adsorbed state, and switch by setting-up time.
the structure of described single adsorbent bed, its shell body 26 is provided with steam input pipe 20, refrigerant conducting pipes 39, cooling water is discharged pipe 40, cooling water inlet pipe 27, remaining cooling water comb 28, condensed water comb 29, be heat-insulation layer 25 between adsorbent bed inner housing 24 and shell body 26, the pipe group 34 of unit pipes 23 compositions of a plurality of parallel connections is housed in inner housing 24, pipe group top is collection refrigerant pipe 33, collection refrigerant pipe 33 collects output or input with the cold-producing medium ammonia in the unit pipes 23 of a plurality of parallel connections, the in-built fin 21 of unit pipes 23 and adsorbent 22, there is the porous core pipe 35 of up/down perforation in the fin centre, gap between gap between a plurality of unit pipes 23 and unit pipes 23 and inner housing 24 is as the passage of steam or cooling water circulation.The condensed water comb 29 of shell body 26 side lower parts is communicated with inner housing, and the port of export is connected with drain valve 30.Steam input sequencing valve group 16 is connected with steam input pipe 20, and condensed water reclaims sequencing valve group 17 and is connected with drain valve 30, and cooling water input sequencing valve group 18 is connected with cooling water inlet pipe 27, and cooling water is discharged sequencing valve group 19 and is connected with cooling water discharge pipe 40.
referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, operation principle of the present invention is: cooling adsorbent bed (2 when heating adsorption bed 1 and simultaneously, 3, 4, 5, 6) time, be subject to automatically opening from the refrigerant gas elevated pressures effect of adsorbent bed 1 corresponding to 1 check-valves of adsorbent bed 1 in check valve set 7, be not subject in check valve set 7 automatically being in closed condition from all the other check-valves of adsorbent bed refrigerant gas elevated pressures effect, refrigerant gas in adsorbent bed 1 is discharged, when namely adsorbent bed 1 produces " desorb ", the refrigerant gas that desorbs is by check valve set 7, its gaseous refrigerant is after check valve set 7 enters condenser 9 and is condensed into liquid state, enter the receiver 10 of increasing, liquid refrigerant in the receiver 10 that strengthens enters in evaporimeter 12 through choke valve 11, in evaporimeter 12, cold-producing medium is evaporated to gaseous state by liquid state.Meanwhile, owing to being subject to cooling effect, adsorbent in adsorbent bed (2,3,4,5,6) produces " absorption " to the refrigerant gas in evaporimeter 12, and the refrigerant gas in evaporimeter 12 is continued to flow to adsorbent bed (2,3,4,5,6), and by " absorption ".And the liquid refrigerant in evaporimeter 12 constantly is evaporated to gas refrigerant, and flows to adsorbent bed (2,3,4,5,6).Liquid refrigerant in evaporimeter 12 is changed into by liquid state and absorbs the surrounding environment amount of heat in the evaporation process of gas, and evaporimeter 12 is included in freezer 13, thereby makes the freezer cooling, makes freezer reach normal operating temperature.Due to 70 pairs of steam input sequencing valve groups 16 of PLC Programmable Logic Controller, condensed water reclaims the programme-control effect of sequencing valve group 17 and cooling water sequencing valve group 18, and adsorbent bed (1,2,3,4,5,6) is switched by setting-up time.After switching, make adsorbent bed 2 enter the heating desorption state, and adsorbent bed 1 enter cooling adsorbed state.At this moment, adsorbent bed (1,3,4,5,6) all is in cooling adsorbed state, has namely realized the peculiar kind of refrigeration cycle of compressor cooling---Carnot cycle.Switch continuously by time and the program set, remain that an adsorbent bed is in the heating desorption state, all the other five adsorbent beds are in cooling adsorbed state, just can guarantee that refrigerant gas continuously from adsorbent bed by " desorb " out, simultaneously, refrigerant gas in evaporimeter be adsorbed the bed continuously " absorption " go back, the driving cold-producing medium kind of refrigeration cycle.And, be t in evaporating temperature
0Under≤-30 ℃ of operating modes, the adsorption capacity of the desorption ability of an adsorbent bed and five adsorbent beds has good matching, and Here it is adopts the main cause of six adsorbent beds.In addition, the adsorption capacity of six adsorbent beds and desorption ability have larger adjustment leeway, are conducive to the realization of cold storage type function.Absorption type refrigerating is exactly to utilize the adsorbent in adsorbent bed can adsorptive gaseous cold-producing medium under the state of cooling, physicochemical characteristics that can the desorb gaseous refrigerant under heated condition and realize a kind of refrigeration modes with the work done of thermal energy to replace compressor.Absorbing refrigeration system is in the circulation of heating desorption and cooling absorption, under the cooling condition of setting, the adsorbance of adsorbent should keep a certain particular magnitude, and reaches the balance of adsorbance and desorption quantity, this balance is kept all the time, thereby make absorbing refrigeration system that a stable refrigerating capacity be arranged.In device, receiver 10, choke valve 11, evaporimeter 12 and the freezer 13 of condenser 9, increasing are by being commonly used in Refrigeration Technique, and its operation principle and structure are mature routine techniques.
As known from the above, the present invention is cold storage type solar powered adsorption refrigeration freezer, forms the absorption type refrigerating generator by six adsorbent beds, at evaporating temperature t
0≤-30 ℃, under the condition of the cold-producing medium evaporating pressure end of than, adsorbent bed still has stronger adsorption capacity, and when guaranteeing the freezer operation, refrigerating capacity is larger, and the refrigeration continuity is good, and good stability can satisfy the requirement of the normal operation of freezer.In addition, the solar thermal collector of suitably amplifying and solar energy steam boiler, adopt simultaneously the liquid reservoir of amplifying, solar charging timesharing fecund is given birth to some refrigerant liquid deposits in the receiver that strengthens by day, when do not have solar energy night, in the suction-operated of a plurality of adsorbent beds of performance and the receiver of increasing, the effect of the refrigerant liquid of many deposits, realized the absorption refrigeration at night, replenish the refrigerating capacity in freezer, make the Ku Wen of freezer keep stable.Here it is cold storage type solar powered adsorption refrigeration freezer can make up night without the defective that solar energy brings, and keeps the normal operation at freezer daytime and night.The cold storage type structure of cold storage type solar powered adsorption refrigeration freezer and function can be replenished refrigerating capacity at night, keep the stable operating temperature of freezer, make the solar powered adsorption refrigeration freezer become possibility on Practical.
embodiment: a kind of Fig. 1 that presses, 2, 3, 4 and the cold storage type solar powered adsorption refrigeration freezer that designs by the said system structural principle, cold-producing medium is ammonia, it comprises the generator that is comprised of six adsorbent beds, condenser, the receiver that strengthens (ammonia storage tank for strengthening herein), choke valve, evaporimeter (being herein the freezer comb), freezer (being the combination freezer herein), solar thermal collector, the solar energy steam boiler, check valve set, steam input sequencing valve group, condensed water reclaims the sequencing valve group, cooling water input sequencing valve group, cooling water is discharged the sequencing valve group, the PLC Programmable Logic Controller.Except adsorbent bed and sequence valve group, all the other parts all have the commodity selling of the series structure design of technology maturation.Wherein, the patented product of solar energy steam boiler for just occurring in recent years that only has solar thermal collector and be equipped with it can satisfy this patent to the specification requirement of solar energy steam thermal source.and adsorbent bed (1, 2, 3, 4, 5, 6), PLC Programmable Logic Controller 70, steam input sequencing valve group 16, condensed water reclaims sequencing valve group 17, cooling water input sequencing valve group 18 is discharged sequencing valve group 19 with cooling water, need designed, designed processing or the buying of former device, design and assembling, PLC Programmable Logic Controller with buying, electronic cap relief valve, the designing requirement of dynamoelectric water valve follow procedure connects, and connection electrical control cubicles, to realize steam input sequencing valve group 16, condensed water reclaims sequencing valve group 17, cooling water input sequencing valve group 18 cooling waters are discharged the programme-control of sequencing valve group 19.These four programme-control results will guarantee to have all the time in adsorbent bed five adsorbent beds to be in cooling adsorbed state, and an adsorbent bed is in the heating desorption state, and press the setting-up time automatic switchover.Five adsorbent beds are in cooling adsorbed state, and an adsorbent bed is in the heating desorption state, and adsorbent bed will guarantee at evaporating temperature t by the result that setting-up time and program automatically switch
0Under≤-30 ℃ of operating modes, adsorbent bed still has larger adsorption capacity, thereby promotion evaporimeter 12 has larger evaporation capacity and refrigerating capacity, the requirement of assurance freezer to refrigerating capacity.
Referring to Fig. 3, Fig. 4, the structure of the adsorbent bed of described designed, designed (1,2,3,4,5,6) is: shell body 26 is provided with steam input pipe 20, cold-producing medium conducting pipes 39, cooling water discharge pipe 40, cooling water inlet pipe 27, remaining cooling water comb 28 and condensed water comb 29.Be heat-insulation layer 25 between adsorbent bed inner housing 24 and shell body 26, inner housing 24 is rustless steel container, and maximum working pressure is 0.4Mpa, and the pipe group 34 that the unit pipes 23 of a plurality of parallel connections forms is housed in inner housing 24, and pipe group 34 tops are collection refrigerant pipe 33.the in-built fin 21 of unit pipes 23 and adsorbent 22, the porous core pipe 35 that up/down perforation is equipped with in the fin centre is as ammonia current passage up and down in unit pipes, space between space between unit pipes and unit pipes and inner housing is as the passage of steam or cooling water, the cooling water inlet pipe 27 of shell body 26 bottoms is communicated with inner housing 24, discharging pipe 40 with cooling water again is communicated with, form the cooling water access way, the residual water comb 28 of shell body 26 bottoms is communicated with inner housing 24, form the discharge-channel of remaining cooling water 31, the condensed water comb 29 of shell body 26 side lower parts is communicated with inner housing 24, form the recovery approach of condensed water 32.Steam 36 is inputted sequencing valve group 16 through steam, then enters adsorbent bed inner housing 24 through steam input pipe 20.Condensed water 32 is through condensed water comb 29, then reclaims sequencing valve group 17 through drain valve 30 and condensed water and get back to solar thermal collector 14.Cooling water 67 is inputted sequencing valve group 18 through cooling water, then enters adsorbent bed inner housing 24 through cooling water inlet pipe 27, and water is full discharges pipe 40 by cooling water, and discharges discharging under 19 controls of sequencing valve group at cooling water.More than be connected to form steam input controlled passage, input quantity and the time distribution implementation procedure of steam input adsorbent bed (1,2,3,4,5,6) are controlled; The condensed water that more than is connected to form reclaims controlled passage, and condensed water is controlled from adsorbent bed (1,2,3,4,5,6) yield and recovery time implementation procedure; The program control passage of cooling water input that more than is connected to form is controlled input quantity and the time distribution implementation procedure of cooling water input adsorbent bed (1,2,3,4,5,6).Steam input sequencing valve group 16, condensed water recovery sequencing valve group 17, cooling water input sequencing valve group 18, cooling water are discharged sequencing valve group 19 and all are connected with PLC Programmable Logic Controller 70, the programme-control that enforcement sets, make one in six adsorbent beds (1,2,3,4,5,6) to be in the steam heated desorption state, all the other five are in the water quench adsorbed state, and switch by the setting-up time interval, reach six adsorption capacity and desorption abilities between adsorbent bed and be in the optimum Match state, thus the refrigeration degree of depth and refrigerating capacity that acquisition is set.
by adsorbent bed (1, 2, 3, 4, 5, 6), check valve set 7, condenser 9, the receiver 10 that strengthens, choke valve 11, evaporimeter 12 (being included in freezer 13), check valve set 8, the passage that returns adsorbent bed is the circulation canal of cold-producing medium ammonia, wherein condenser 9 passes to cooling water and carries out cooling, the receiver 10 that strengthens is in order to lay in more refrigerant liquid (being liquefied ammonia herein), adsorption refrigeration during in order to night, daytime, adsorbent bed (1, 2, 3, 4, 5, 6) five in are carried out cooling with cooling water, make it to be in cooling adsorbed state, adsorbent bed (1, 2, 3, 4, 5, 6) one in is heated with steam, make it to be in the heating desorption state.Solar thermal collector 14 and the solar boiler 15 amplified can provide enough steams by day, guarantee that the adsorbent bed heating desorption goes out more cold-producing medium ammonia, lays in after liquefaction in the receiver that strengthens.Night is during without solar energy, at this moment six adsorbent beds (1,2,3,4,5,6) are in cooling adsorbed state dribs and drabs, carry out absorption refrigeration, and provide cold-producing medium liquid ammonia through choke valve 11 to evaporimeter 12 by the liquid ammonia of many deposits in the receiver 10 that strengthens, the gaseous ammonia that is evaporated in evaporimeter 12 enters by stages and in groups six adsorbent beds (1,2,3,4,5,6) and is adsorbed, thereby realize sweat cooling in evaporimeter 12, for freezer 13 provides a certain amount of refrigerating capacity at night, make freezer 13 keep normal temperature of ice house.
The steam that the present invention utilizes the solar energy steam boiler to produce is thermal source, carry out absorption refrigeration with " adsorptive refrigerating system with multiple generators basic principle ", with the PLC Programmable Logic Controller, steam input, condensed water recycling, cooling water input, the cooling water of six adsorbent beds are discharged implementation procedure and dug control.Form the function of cold storage type absorption refrigeration with the special constructions such as receiver of the solar thermal collector amplified, solar energy steam boiler, six adsorbent beds, increasing, realize cold storage type absorption refrigeration at night, replenish required refrigerating capacity of freezer during without solar energy at night.This cold storage type solar powered adsorption refrigeration freezer refrigerating degree of depth can reach below-30 ℃, and refrigeration work consumption can reach thousands of watts to tens thousand of watts, is applicable to middle-size and small-size freezer.In absorbing refrigeration system, steam pressure is 0.2 ∽ 0.4Mpa, and steam temperature is 143 ℃ of 120 ∽, and steam condensing water can be recycled in solar thermal collector and is used, and cooling water pressure is 0.2 ∽ 0.3Mpa, and the ammonia maximum pressure is 1.35Mpa.This cold storage type solar powered adsorption refrigeration freezer relatively enriches the area at solar energy and can normally move.According to the technical parameter (patented technology) of existing solar energy steam boiler, in daytime after before midday 7 hours, every m
2Solar thermal collector per hour can produce the 0.6kg steam for sun steam boiler, and steam pressure is 0.3Mpa.Consider again the cold requirement of storage of absorption refrigeration at night, with solar thermal collector and the solar boiler that this patent is used in conjunction with, average every m
2Solar thermal collector can make the absorption refrigeration freezer that the absorption refrigeration amount of 120W is provided.The present embodiment, freezer refrigerating power are 5000W, and evaporating temperature is t
0=30 ℃, freezer volume V=30m
3, adsorbent bed is six, the receiver volume of increasing is 100dm
3, night, every two adsorbent beds were a collection ofly to be divided into three batches, every batch of adsorption time is 30min, is that freezer replenishes the adsorbable refrigerating operaton 90min time of refrigerating capacity.Need solar thermal collector area S=45m
2
Cold storage type solar powered adsorption refrigeration freezer relies on the steam that the solar energy steam boiler produces to promote six adsorbent bed absorption refrigeration freezer operations, the refrigeration continuity of six adsorbent bed absorption refrigeration freezers is good, and the refrigeration degree of depth and refrigerating capacity all can satisfy the requirement of the normal operation of freezer.Night, replenish refrigeration with its cold storage type structure and function, guarantee all can normally move at freezer daytime and night.This cold storage type solar powered adsorption refrigeration freezer needs again freezer to carry out to food, agricultural byproducts the area that freezing cold tool hides will to bring into play unique effect solar energy is relatively abundant.This freezer utilizes Driven by Solar Energy, reaches the purpose of energy-saving and environmental protection, is typical environmental protection, energy-conservation freezing and refrigerating equipment.
Claims (1)
1. cold storage type solar adsorption-type refrigerating freezer, comprise six adsorbent beds (1, 2, 3, 4, 5, 6), two check valve set (7, 8), condenser (9), the receiver (10) that strengthens, choke valve (11), the freezer (13) that includes evaporimeter (12), PLC Programmable Logic Controller (70), solar thermal collector (14), solar energy steam boiler (15), steam input sequencing valve group (16), condensed water reclaims sequencing valve group (17), cooling water input sequencing valve group (18), cooling water is discharged sequencing valve group (19), it is characterized in that: described adsorbent bed (1, 2, 3, 4, 5, 6) in, the refrigerant outlet of each adsorbent bed is communicated with through the refrigerant inlet end of the first check valve set (7) with condenser (9), the refrigerant outlet end of condenser (9) is communicated with the inlet of the receiver (10) that strengthens, and the inlet of the evaporimeter (12) of the port of export of the fluid reservoir that strengthens in choke valve (11) and freezer (13) is communicated with, the refrigerant outlet end of evaporimeter (12) is communicated with the refrigerant inlet of each adsorbent bed respectively through the second check valve set (8), PLC Programmable Logic Controller (70) reclaims sequencing valve group (17) with steam input sequencing valve group (16), condensed water respectively, cooling water input sequencing valve group (18) is connected sequencing valve group (19) and is connected with cooling water, steam input sequencing valve group (16), condensed water recovery sequencing valve group (17), cooling water input sequencing valve group (18), cooling water are discharged sequencing valve group (19) and are connected with each adsorbent bed (1,2,3,4,5,6) respectively, the solar energy steam (36) that solar thermal collector (14) and solar energy steam boiler (15) provide is linked to be the loop through steam input sequencing valve group (16) and each adsorbent bed, and condensed water reclaims sequencing valve group (17) and each adsorbent bed (1,2 through condensed water, 3,4,5,6) be linked to be the loop, cooling water (67) is discharged sequencing valve group (19) and is linked to be the loop through cooling water input sequencing valve group (18), each adsorbent bed (1,2,3,4,5,6), cooling water.
2, cold storage type solar powered adsorption refrigeration freezer according to claim 1, it is characterized in that: described each adsorbent bed shell body (26) is provided with steam input pipe (20), water inlet pipe (27), residual water comb (28), condensed water comb (29), cold-producing medium conducting pipes (39), cooling water is discharged pipe (40), be heat-insulation layer (25) between adsorbent bed inner housing (24) and shell body (26), the in-built adsorbent bed pipe group (34) that is formed by several unit pipes (23) of inner housing (24), the collection refrigerant pipe (33) of pipe group top is connected with cold-producing medium conducting pipes (39), the in-built fin of unit pipes (23) (22) and adsorbent (21), there is the porous core pipe (35) of up/down perforation in the fin centre, the water inlet pipe (27) of shell body (26) bottom is communicated with inner housing (24) and steam input pipe (20), steam input sequencing valve group (16) is connected with steam input pipe (20), condensed water comb (29) is connected with drain valve (30), condensed water reclaims sequencing valve group (17) and is connected with drain valve (30), steam condensing water (32) reclaims sequencing valve group (17) through condensed water and gets back to solar thermal collector (14), and cooling water input sequencing valve group (18) is connected with water inlet pipe (27).
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| CN104048443B (en) * | 2014-05-30 | 2016-05-25 | 武汉畅能鑫悦新能源科技有限公司 | Chemical adsorption refrigeration system taking motor exhaust as driven by energy |
| CN104048442B (en) * | 2014-05-30 | 2016-05-25 | 武汉畅能鑫悦新能源科技有限公司 | The chemical adsorption refrigeration system driving with automobile engine tail gas |
| CN104048440B (en) * | 2014-05-30 | 2016-05-25 | 武汉畅能鑫悦新能源科技有限公司 | Alkaline-earth halide chemisorbed formula thermal refrigerating system |
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| FR2441134A1 (en) * | 1978-11-10 | 1980-06-06 | Anvar | Solar energy collector assembly - has fluid conduits for transporting heat accumulated at rear face of collector compartment |
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