CN105444467A - Absorption type heat pump - Google Patents
Absorption type heat pump Download PDFInfo
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- CN105444467A CN105444467A CN201510590557.XA CN201510590557A CN105444467A CN 105444467 A CN105444467 A CN 105444467A CN 201510590557 A CN201510590557 A CN 201510590557A CN 105444467 A CN105444467 A CN 105444467A
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- heated medium
- economizer bank
- evaporation tube
- liquid
- heat
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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
Abstract
The absorption type heat pump restrains heat conduction efficiency reduction of a heated medium. The absorption type heat pump is provided with an absorber (10) utilizes an absorption liquid (Sa) to absorb the heat generated in refrigerating medium steaming (Ve) so as to heat a heated medium (W) circulating in a heat conduction pipe (12), allowing the heated medium (W) to evaporate in the heat conduction pipe (12); the heat conduction pipe (12) is provided with a preheated pipe (12p) for heating up a heated medium liquid (Wq), and an evaporating pipe (12e) for evaporating the heated medium liquid (Wq) after heating up by the preheated pipe (12p). The absorber (10) is configured to have one end of each evaporation pipe (12e) connected to an evaporation pipe distribution portion (14es), and the other end connected to an evaporation pipe collection portion (14ec). The evaporation pipe distribution portion (14es) and the evaporation pipe collection portion (14ec) are respectively formed; the heated medium (W) flowing in each evaporation pipe (12e) does not flow together from the evaporation pipe distribution portion (14es) to the evaporation pipe collection portion (14ec).
Description
Technical field
The present invention relates to absorption heat pump, particularly relate to the absorption heat pump suppressing the heat transfer efficiency to heated medium heat conduction to reduce.
Background technology
Known a kind of absorption heat pump, the refrigerant vapour produced by evaporimeter is guided to absorber by it, in absorber, utilize the absorption heat produced when making absorbent solution absorption refrigeration agent steam, the liquid of heating heated medium and generate the steam of heated medium.In order to avoid when the liquid of heated medium becomes steam, make because being subject to the obstruction of volume increase the situation that the flowing of heated medium becomes unstable, and absorber is formed as follows.In this absorber, be flatly configured with many makes heated medium at the pipe of internal flow.Water cavity is respectively arranged with at the two ends of many pipes.Water cavity is divided into multiple by multiple demarcation strip.Many pipes are connected with at each water cavity marked off with demarcation strip.In addition, demarcation strip should be set to: become the mode of liquid stream upward from below as a whole to divide water cavity to make the heated medium flowed as a whole and as a liquid stream at each pipe and water cavity.In addition, demarcation strip is set to: for the gross area of the flow path cross sectional area of the set of the pipe of the heated medium flowing of deriving from certain water cavity, become more than the gross area of the flow path cross sectional area of the set of the pipe for the heated medium flowing importing to this water cavity (for example, referring to patent document 1).
Patent document 1: Japanese Unexamined Patent Publication 2010-164248 publication (0034 ~ 0037 section etc.)
The heated medium flowed in pipe is heated because absorbing heat, thus the part evaporation of liquid, and flows with gas.Now, such as when heated medium is water, volume due to the gas of evaporation is that hundreds of times of the volume of liquid are large, therefore in certain water cavity, when heated medium pipe group from below flows out and flows into the pipe group of next top, there is situation because of flowing different and occur the situation of only inflow gas and the not pipe of influent.In the pipe of only inflow gas, absorption heat cannot be passed to heated medium efficiently.
Summary of the invention
The present invention made in view of above-mentioned problem, object is the absorption heat pump providing a kind of heat transfer efficiency excellence, can prevent not flow into the liquid of heated medium and flow into the situation of the evaporation tube of the steam of heated medium, suppressing the heat transfer efficiency to heated medium heat conduction to reduce.
To achieve these goals, the absorption heat pump of the 1st aspect of the present invention, such as shown in Fig. 3, possesses absorber 10, it makes the liquid Wq of heated medium circulate at many heat pipes 12, absorbing liquid Sa is made to drop on the outside of heat pipe 12, the heated medium W of absorption heat to circulation in heat pipe 12 produced during the steam Ve of absorbing liquid Sa absorption refrigeration agent is utilized to heat, heated medium W is evaporated in heat pipe 12, heat pipe 12 has: economizer bank 12p, and the liquid Wq of heated medium imports and heats and make it to heat up by it, with evaporation tube 12e, the liquid Wq of heated medium after utilizing economizer bank 12p to heat up imports and heats and make it to evaporate by it, to make absorbing liquid Sa according to evaporation tube 12e, the mode that the order of economizer bank 12p falls, arrangement evaporation tube 12e and economizer bank 12p, absorber 10 has outflow stream 84, this outflow stream 84 is configured to: one end of each evaporation tube 12e is connected to the evaporation tube dispenser 14es distributing heated medium W to many evaporation tube 12e, the other end of each evaporation tube 12e is connected to the evaporation tube collection unit 14ec collecting heated medium W from many evaporation tube 12e, and make heated medium W flow out to the outside of absorber 10 from evaporation tube collection unit 14ec, evaporation tube dispenser 14es and evaporation tube collection unit 14ec is formed by one respectively, and be configured to: at the heated medium W of many evaporation tube 12e internal flows separately, do not collaborating between evaporation tube collection unit 14ec from evaporation tube dispenser 14es.
If form in the above described manner, then can avoid the situation of the liquid of the heated medium flowing into each evaporation tube just evaporation before flowing into each evaporation tube, thus can prevent from many evaporation tubes, producing the liquid not flowing into heated medium and the situation flowing into the evaporation tube of the steam of heated medium, thus the heat transfer efficiency to the liquid thermal conductivity of heated medium can be suppressed to reduce.In addition, owing to carrying out preheating before the liquid of heated medium is supplied to evaporation tube, therefore, it is possible to carry out the generation of heated medium steam in evaporation tube efficiently.
In addition, the absorption heat pump of the 2nd aspect of the present invention, if such as represent with reference to Fig. 3, be then configured to: the heat that economizer bank 12p becomes the steam Wv in fact the not comprise heated medium liquid Wq of scope to the heated medium flowing into evaporation tube dispenser 14es from the heat absorbing heat reception heats.
If form in the above described manner, then can prevent from higher probability in many evaporation tubes, producing the liquid not flowing into heated medium and the situation flowing into the evaporation tube of the steam of heated medium.
In addition, the absorption heat pump of the 3rd aspect of the present invention, such as, if represent with reference to Fig. 3, then total heat-conducting area of many evaporation tube 12e is more than 1 times of total heat-conducting area of economizer bank 12p and less than 10 times.
If form in the above described manner, then can suppress the situation being mixed into steam in the heated medium importing to evaporation subject Liquid distribution portion.
In addition, the absorption heat pump of the 4th aspect of the present invention, such as shown in Fig. 4, possess: gas-liquid separator 80, the liquid of heated medium flowed out from outflow stream 84 and the fluid-mixing Wm of steam are separated into by it: the steam Wv of heated medium and the liquid Wq of heated medium; Circulation fluid stream 82, the liquid Wq of the heated medium in gas-liquid separator 80 is guided to evaporation tube dispenser 14es by it; And importing stream 85, it, by utilizing the liquid Wq of the heated medium absorbed before heat heating, guides to the economizer bank supply unit 14ps supplying heated medium W to economizer bank 12p.
If form in the above described manner, due to the liquid of the heated medium from gas-liquid separator higher for temperature is guided to evaporation tube dispenser, therefore, it is possible to the efficiency making heated medium obtain when absorbing heat improves.
In addition, the absorption heat pump of the 5th aspect of the present invention, such as shown in Fig. 4, economizer bank 12p is made up of mulitpath, is respectively arranged with at described mulitpath: multiple economizer bank supply unit 14ps, 14pm heated medium W being supplied to economizer bank 12p and multiple economizer bank recoverer 14pm, 14es of being reclaimed by the heated medium W after utilizing economizer bank 12p to heat.
If form in the above described manner, then when being imported by the liquid of heated medium low for temperature in order to supply, the liquid of the heated medium being directed into evaporation subject Liquid distribution portion can be made to rise near boiling temperature.
In addition, the absorption heat pump of the 6th aspect of the present invention, such as shown in Fig. 3, economizer bank 12p is made up of a paths, and a described paths has: economizer bank supply unit 14ps heated medium W being supplied to economizer bank 12p and the economizer bank recoverer 14es reclaimed by the heated medium W after utilizing economizer bank 12p to heat.
If form in the above described manner, then can suppress the heated medium importing evaporation subject Liquid distribution portion, be imported into the state of evaporating.
In addition, the absorption heat pump of the 7th aspect of the present invention, such as shown in Fig. 5, evaporation tube dispenser 14es is configured to: the evaporation tube assembly wall 14Aj being provided with many evaporation tube 12e with the sectional area in the face orthogonal with evaporation tube assembly wall 14Aj between the inwall 14Ag of evaporation tube assembly wall 14Aj is: tend to from the position that heated medium W flows into evaporation tube dispenser 14es and economizer bank 12p evaporation tube 12e farthest and successively decreasing gradually.
If form in the above described manner, then can suppress the deviation of the flow of the liquid of the heated medium flowing into each evaporation tube.
In addition, the absorption heat pump of the 8th aspect of the present invention, such as, shown in Fig. 3, absorber 10 has purging discharge pipe 17, and this purging discharge pipe 17 is arranged at the bottom of evaporation tube dispenser 14es and discharges heated medium W.
If form in the above described manner, then can suitably discharge the evaporated residue produced in evaporation tube.
According to the present invention, the liquid of the heated medium flowing into each evaporation tube can be avoided, flowing into the situation of each evaporation tube front evaporator, thus can prevent from many evaporation tubes, producing the liquid not flowing into heated medium and the situation flowing into the evaporation tube of the steam of heated medium, the heat transfer efficiency to the liquid thermal conductivity of heated medium can be suppressed to reduce.In addition, owing to carrying out preheating before the liquid of heated medium is supplied to evaporation tube, therefore, it is possible to carry out the generation of heated medium steam in evaporation tube efficiently.
Accompanying drawing explanation
Fig. 1 is the exemplary system figure of the absorption heat pump of embodiments of the present invention.
Fig. 2 is the Dühring's diagram of the absorption heat pump of embodiments of the present invention.
Fig. 3 is the sectional view around the absorber of the absorption heat pump of embodiments of the present invention.
Fig. 4 is the sectional view of the first variation representing the absorber that the absorption heat pump of embodiments of the present invention possesses.
Fig. 5 is the sectional view of the second variation representing the absorber that the absorption heat pump of embodiments of the present invention possesses.
Fig. 6 is the sectional view of the 3rd variation representing the absorber that the absorption heat pump of embodiments of the present invention possesses.
Fig. 7 is the sectional view of the 4th variation representing the absorber that the absorption heat pump of embodiments of the present invention possesses.
Fig. 8 is the exemplary system figure of the secondary temperature-boosting absorption heat pump of the variation of embodiments of the present invention.
Description of reference numerals: 1 ... absorption heat pump; 10 ... absorber; 12 ... heat pipe; 12e ... evaporation tube; 12p ... economizer bank; 14ec ... fluid-mixing room; 14es ... high temperature fluid reservoir; 14pm ... transfer fluid reservoir; 14ps ... low temperature fluid reservoir; 14Aj ... tube sheet; 14Ag ... inwall; 17 ... purge discharge pipe; 80 ... gas-liquid separator; 82 ... heated medium liquid pipe; 84 ... effuser; 85 ... make-up pipe; Sa ... concentrated solution; Ve ... evaporator refrigerant steam; W ... heated medium; Wm ... mixing heated medium; Wq ... heated medium liquid; Wv ... heated medium steam.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition in the various figures, to mutually same or equivalent parts, mark same or similar Reference numeral, and the repetitive description thereof will be omitted.
First, be described with reference to the absorption heat pump 1 of Fig. 1 to embodiments of the present invention.Fig. 1 is the exemplary system figure of absorption heat pump 1.First the structure of absorption heat pump 1 entirety and effect are described, then the absorber 10 of one of the inscape as absorption heat pump 1 are described in detail.Absorption heat pump 1 possesses formation and carries out the absorber 10 of the capital equipment of the absorption heat pump cycle of absorbing liquid S (Sa, Sw) and cold-producing medium V (Ve, Vg, Vf), evaporimeter 20, regenerator 30 and condenser 40, also possesses gas-liquid separator 80.
In this manual, about absorbing liquid, in order to easily carry out the difference on heat pump cycle, called for " weak solution Sw ", " concentrated solution Sa " etc. according to the position on proterties, heat pump cycle, but when not considering proterties etc., be commonly referred to as " absorbing liquid S " or " solution S ".Equally, about cold-producing medium, in order to easily carry out the difference on heat pump cycle, called for " evaporator refrigerant steam Ve ", " regenerator refrigerant vapour Vg ", " refrigerant liquid Vf " etc. according to the position on proterties, heat pump cycle, but when not considering proterties etc., be commonly referred to as " cold-producing medium V ".In the present embodiment, use the LiBr aqueous solution as absorbing liquid S (mixture of absorbent and cold-producing medium V), use water (H
2o) as cold-producing medium V.In addition, heated medium W be supply to the heated medium liquid Wq of the heated medium W of the liquid of absorber 10, as the heated medium steam Wv of the heated medium of gas, as the common name mixing heated medium Wm and the make-up water Ws as the additive liq from the outer heated medium supplemented of absorption heat pump 1 being mixed with liquid and the heated medium under the state of gas.In the present embodiment, water (H is used
2o) as heated medium W.
Absorber 10 has in inside: heat pipe 12, and it forms the stream of heated medium W; Concentrated solution spreading nozzle 13, it is as the absorbing liquid dispenser scattering concentrated solution Sa.Absorber 10 scatters concentrated solution Sa from concentrated solution spreading nozzle 13, and produces absorption heat when concentrated solution Sa absorbs evaporator refrigerant steam Ve.The heated medium W that absorber 10 is configured to flowing in heat pipe 12 receives this absorption heat, heats heated medium W.Evaporimeter 20 has in inside: heat source tube 21, and it forms the stream as the thermal source hot water h of heat source fluid; Refrigerant liquid spreading nozzle 22, its thermotropism source capsule 21 scatters refrigerant liquid Vf.Evaporimeter 20 is configured to scatter refrigerant liquid Vf from refrigerant liquid spreading nozzle 22, and the refrigerant liquid Vf scattered utilizes the heat of the thermal source hot water h of flowing in heat source tube 21 and evaporates, and produces evaporator refrigerant steam Ve thus.Absorber 10 and evaporimeter 20 are formed in a tank body in the mode be interconnected.Absorber 10 and evaporimeter 20 by being communicated with, and are formed in the mode that the evaporator refrigerant steam Ve produced by evaporimeter 20 can be supplied to absorber 10.
Regenerator 30 has: heat source tube 31, and it has the thermal source hot water h of the heat source fluid as heat dilute solution Sw in internal flow; With weak solution spreading nozzle 32, it scatters weak solution Sw.The thermal source hot water h of flowing in heat source tube 31, both can be the fluid identical with the thermal source hot water h flowed in heat source tube 21, also can be different fluids.Regenerator 30 is configured to the weak solution Sw by scattering from weak solution spreading nozzle 32 and is heated by thermal source hot water h, thus cold-producing medium V generates the concentrated solution Sa that concentration rises from weak solution Sw evaporation.Be configured to as regenerator refrigerant vapour Vg from the cold-producing medium V of weak solution Sw evaporation and move to condenser 40.Condenser 40 has the cooling water pipe 41 of the cooling water c flowing being provided as cooling medium.Condenser 40 is configured to import the regenerator refrigerant vapour Vg produced by regenerator 30, and utilizes cooling water c to cool to make its condensation to it.Regenerator 30 and condenser 40 are formed in a tank body in the mode be interconnected.Regenerator 30 and condenser 40 are configured to the regenerator refrigerant vapour Vg produced by regenerator 30 to be supplied to condenser 40 by being communicated with.In addition, absorber 10 and evaporimeter 20 are disposed in than regenerator 30 and the high position of condenser 40, and be configured to utilize position pressure head, respectively the absorbing liquid S in absorber 10 is carried to regenerator 30, and the refrigerant liquid Vf in evaporimeter 20 is carried to condenser 40.
The part stockpiling concentrated solution Sa of regenerator 30 and the concentrated solution spreading nozzle 13 of absorber 10, connect with the concentrated solution pipe 35 for concentrated solution Sa flowing.The solution pump 35p of pressurized delivered concentrated solution Sa is equipped at concentrated solution pipe 35.The part stockpiling weak solution Sw and the weak solution spreading nozzle 32 of absorber 10, connect with the weak solution pipe 36 for weak solution Sw flowing.The solution heat exchanger 38 carrying out heat exchange between concentrated solution Sa and weak solution Sw is equipped at concentrated solution pipe 35 and weak solution pipe 36.The part stockpiling refrigerant liquid Vf of condenser 40 and the refrigerant liquid spreading nozzle 22 of evaporimeter 20, connect with the refrigerant liquid pipe 45 for refrigerant liquid Vf flowing.The refrigerated medium pump 46 of pressurized delivered refrigerant liquid Vf is equipped at refrigerant liquid pipe 45.The part stockpiling unevaporated refrigerant liquid Vf and the condenser 40 of evaporimeter 20, with will to scatter from refrigerant liquid spreading nozzle 22 and the refrigerant liquid pipe 25 that unevaporated refrigerant liquid Vf is back to condenser 40 connects.Be equipped with refrigerant heat exchanger 48 at refrigerant liquid pipe 25 and refrigerant liquid pipe 45, each other heat exchange is carried out to the refrigerant liquid Vf flowed at each pipe 25,45.
Gas-liquid separator 80 imports to flow and by the heated medium W after heating at the heat pipe 12 of absorber 10, and by equipment that heated medium steam Wv is separated with heated medium liquid Wq.Gas-liquid separator 80 and absorber 10, with the heated medium liquid Wq in gas-liquid separator 80 being guided to the heated medium liquid pipe 82 of heat pipe 12 and connecting as by the effuser 84 being guided to the outflow stream of gas-liquid separator 80 by the heated medium W after heating.In addition, be connected with heated medium steam pipe 89 at gas-liquid separator 80, separated heated medium steam Wv is guided to the outside of absorption heat pump 1 by it.In addition, be provided with make-up pipe 85, its outside from absorption heat pump 1 imports the make-up water Ws being used for supplementing the heated medium W being supplied to the outside of absorption heat pump 1 mainly as steam.Make-up pipe 85 is connected to heated medium liquid pipe 82, and is configured to make-up water Ws is collaborated with the heated medium liquid Wq flowed in heated medium liquid pipe 82.Be equipped with make-up pump 86 at make-up pipe 85, it is to absorber 10 pressurized delivered make-up water Ws.
Simultaneously with reference to Dühring's diagram and Fig. 1 of Fig. 2, the heat pump cycle of above-mentioned absorption heat pump 1 is described.The Dühring's diagram of Fig. 2 gets the dew-point temperature of cold-producing medium V (being water in the present embodiment) at the longitudinal axis, get the temperature of solution S (being the LiBr aqueous solution in the present embodiment) at transverse axis.Tend to the isoconcentrate that top-right line represents solution S, concentration is higher more to the right, and concentration is lower more left.The top-right line of trend of the dew-point temperature in figure 0 DEG C is the line of solution concentration 0% (being namely only cold-producing medium).In addition, the dew-point temperature represented due to the longitudinal axis and saturation pressure have corresponding relation, therefore be in the heat pump cycle of present embodiment of saturated vapor at refrigerant vapour Ve, Vg, also can be considered as the internal pressure that the longitudinal axis represents main composition parts 10,20,30,40.
First, the circulation of refrigerant side is described.In condenser 40, receive the regenerator refrigerant vapour Vg evaporated by regenerator 30, and utilize the cooling water c flowed at cooling water pipe 41 to be refrigerant liquid Vf (v1) by its cooling condensation.Condensed refrigerant liquid Vf is transported to the refrigerant liquid spreading nozzle 22 of evaporimeter 20 by refrigerated medium pump 46.The refrigerant liquid Vf thermotropism source capsule 21 being transported to refrigerant liquid spreading nozzle 22 scatters, and becomes evaporator refrigerant steam Ve (v2) by the thermal source hot water h heating of flowing in heat source tube 21, evaporation.The evaporator refrigerant steam Ve produced by evaporimeter 20, moves to the absorber 10 be communicated with evaporimeter 20.
Next, the circulation of solution side is described.In absorber 10, scatter concentrated solution Sa from concentrated solution spreading nozzle 13, this distributed concentrated solution Sa absorbs and moves from evaporimeter 20 the evaporator refrigerant steam Ve come.Absorb the concentrated solution Sa after evaporator refrigerant steam Ve, concentration reduces and becomes weak solution Sw (j ~ k).In absorber 10, produce when concentrated solution Sa absorbs evaporator refrigerant steam Ve and absorb heat.Utilize this absorption heat, heat the heated medium W flowed at heat pipe 12.Concentrated solution Sa after utilizing absorber 10 to absorb evaporator refrigerant steam Ve, concentration reduces and becomes weak solution Sw, and is accumulated in the bottom of absorber 10.The difference of the weak solution Sw stockpiled because pressing in gravity and absorber 10 and regenerator 30, and flow towards regenerator 30 in weak solution pipe 36, carry out heat exchange with concentrated solution Sa and temperature reduces (k ~ m) at solution heat exchanger 38, and arrive regenerator 30.Weak solution Sw is when flowing out solution heat exchanger 38 and entering regenerator 30, and pressure (dew-point temperature) declines, and with the part evaporation of the cold-producing medium V in weak solution Sw, temperature reduces (m ~ n).
Be transported to the weak solution Sw of regenerator 30, scatter from weak solution spreading nozzle 32, and by the thermal source hot water h flowed in heat source tube 31 (being about about 80 DEG C in the present embodiment) heating, thus the cold-producing medium in the weak solution Sw scattered evaporates and becomes concentrated solution Sa (n ~ p), and be accumulated in the bottom of regenerator 30.On the other hand, move to condenser 40 from the cold-producing medium V of weak solution Sw evaporation as regenerator refrigerant vapour Vg.Be accumulated in the concentrated solution Sa of the bottom of regenerator 30, the pressurized concentrated solution spreading nozzle 13 being delivered to absorber 10 by solution pump 35p and via concentrated solution pipe 35.The concentrated solution Sa of flowing in concentrated solution pipe 35, carries out heat exchange at solution heat exchanger 38 with weak solution Sw, inflow absorber 10 (p ~ q) after temperature rises, and scatters from concentrated solution spreading nozzle 13.Concentrated solution Sa utilizes solution pump 35p to boost and enters absorber 10, makes temperature rise (q ~ j) with absorbing evaporator refrigerant steam Ve in absorber 10.The concentrated solution Sa being back to absorber 10 absorbs evaporator refrigerant steam Ve, repeats same circulation afterwards.
Carry out in the process of absorption heat pump cycle as above at absorbing liquid S and cold-producing medium V, in absorber 10, the absorption heat produced when utilizing concentrated solution Sa to absorb evaporator refrigerant steam Ve, heated medium liquid Wq is heated and becomes moist steam (mixing heated medium Wm), be directed to gas-liquid separator 80 and separated heated medium steam Wv, what be supplied to the outside of absorption heat pump 1 utilizes steam position.That is, heated medium steam Wv is taken out from absorption heat pump.Be supplied to outside heated medium W, supply from the outside of absorption heat pump 1 as make-up water Ws.In addition, control device (not shown) is utilized to control to form each equipment of above-mentioned absorption heat pump 1.
Next, with reference to Fig. 3, the absorber 10 forming above-mentioned absorption heat pump 1 (with reference to Fig. 1) is described in detail.Fig. 3 is the sectional view around the absorber 10 of the absorption heat pump 1 shown in Fig. 1.Absorber 10 is configured in tank body 11, contain heat pipe 12 and concentrated solution spreading nozzle 13, has the water cavity forming member 14 as heated medium room forming member in the arranged outside of tank body 11.Water cavity forming member 14 is parts heated medium W being supplied to each heat pipe 12 or forming the water cavity as the heated medium room of collecting heated medium W from each heat pipe 12 in inside.Tank body 11 is formed as shape of growing crosswise when arranging typically.
In the present embodiment, heat pipe 12 is provided with multiple parts being formed as linearity in tank body 11.Heat pipe 12 is engaged in one end of rectangular tank body 11 and the other end of contrary side thereof.The face of the joint heat pipe 12 of tank body 11 is formed as tube sheet (heat conduction tube sheet), and this tube sheet is formed with the hole can inserting heat pipe 12.The inside being engaged in the heat pipe 12 of the tube sheet at the two ends of tank body 11 is not communicated with the inside of tank body 11.In other words, the heated medium W being configured in heat pipe 12 flowing with for flowing out the absorbing liquid S that flows into and cold-producing medium V in tank body 11 does not mix.If illustrate object lesson, then heat pipe 12 is fixed in the hole of the tube sheet being formed at tank body 11 by expander.
Heat pipe 12 is distinguished as economizer bank 12p and evaporation tube 12e according to its function.Economizer bank 12p is importing heated medium liquid Wq, and utilizes absorption heat heat the heated medium liquid Wq imported and make it the pipe of intensification.Evaporation tube 12e imports by the heated medium liquid Wq after heating in economizer bank 12p, and utilizes the pipe absorbing heat and the heated medium liquid Wq of importing is evaporated.In evaporation tube 12e, the evaporation at least partially of the heated medium liquid Wq flowed into from one end until flow out from the other end, and becomes heated medium steam Wv.Evaporation tube 12e is configured at than economizer bank 12p position by the top.In the present embodiment, each heat pipe 12 is configured to make the axis of economizer bank 12p and evaporation tube 12e all become level.In evaporation tube 12e, make heated medium liquid Wq ebuillition of heated if consider, then also can consider evaporation tube 12e to be configured to make its axis become vertical.But, in the present embodiment, from the view point of the outer surface that scattered absorbing liquid S can be made as thinner liquid film to contact evaporation tube 12e as much as possible, and evaporation tube 12e is configured to axis becomes level.In addition, from the view point of making manufacture easy, economizer bank 12p is same with evaporation tube 12e, is also configured to make axis become level.
Be arranged at the economizer bank 12p being configured at vertical direction foot in the heat pipe 12 in tank body 11, be configured at the position of the part (space) guaranteeing thereunder to stockpile weak solution Sw.By forming in this wise, when steady running, heat pipe 12 can not immerse absorbing liquid S, the concentrated solution Sa infiltrating expansion on the surface of heat pipe 12 absorbs evaporator refrigerant steam Ve, therefore, it is possible to increase the contact area of concentrated solution Sa and evaporator refrigerant steam Ve, and the absorption heat produced promptly can be passed to the heated medium W flowed at heat pipe 12, thus can accelerate the recovery of absorbability.On the other hand, be configured at the evaporation tube 12e of the topmost of tank body 11, be configured in and guarantee the position in the space that concentrated solution spreading nozzle 13 is set.
Two faces (tube sheet) of the tank body 11 that the end that water cavity forming member 14 is installed on each heat pipe 12 engages.Water cavity forming member 14 is the rectangular-shaped parts of an opening, and it covers with the face of opening the tube sheet that the mode being installed on one end of the many heat pipes 12 of the tube sheet of tank body 11 is installed on tank body 11.Because water cavity forming member 14 is installed on the tube sheet of tank body 11, thus the space surrounded by water cavity forming member 14 and the tube sheet of tank body 11 becomes water cavity.Water cavity is communicated with the inside of each heat pipe 12.That is, heated medium W flows out relative to water cavity and flows into.When forming multiple water cavity in the inside dividing water cavity forming member 14, the inside of water cavity forming member 14 is provided with demarcation strip 15.At each water cavity divided by demarcation strip 15, be communicated with one end of the one end of the heat pipe 12 flowed for the heated medium W flowing into this water cavity and/or the heat pipe 12 for the heated medium W flowing of flowing out from this water cavity.
Demarcation strip 15 is configured such that heated medium W flows out the heat pipe 12 of more than one or two flowed into relative to some water cavities, is communicated in different water cavities at the water cavity of contrary side.Thus, the heated medium W flowed in each heat pipe 12 and water cavity is configured to: to flow to a direction from the water cavity being arranged in most upstream at the heat pipe 12 be communicated with therewith, and water cavity in contrary side changes and to flow to and to the mode flowed in the opposite direction with a side in other heat pipes 12 be communicated with therewith, be formed as a sinuous liquid stream as a whole and in absorber 10.In addition, demarcation strip 15 should be set to, at the heated medium W each heat pipe 12 and water cavity flowed as a whole and as a liquid stream, with the model split water cavity flowed upward from below overall in absorber 10.
Be installed on the water cavity in a water cavity forming member 14 in two water cavity forming member 14 in two faces of tank body 11 respectively, separated by demarcation strip 15, thus be divided into low temperature fluid reservoir 14ps and fluid-mixing room 14ec.In addition, the water cavity in another water cavity forming member 14 does not arrange demarcation strip 15, and entirety becomes high temperature fluid reservoir 14es.
On the sectional view shown in Fig. 3, be connected with one end of the economizer bank 12p of more than one or two at low temperature fluid reservoir 14ps.One end is connected to the other end of whole economizer bank 12p of low temperature fluid reservoir 14ps, is connected to high temperature fluid reservoir 14es.So in the present embodiment, a kind of economizer bank 12p of the economizer bank 12p be connected with high temperature fluid reservoir 14es by low temperature fluid reservoir 14ps is provided with.At this, low temperature fluid reservoir 14ps is water cavity heated medium liquid Wq being supplied to a kind of economizer bank 12p, is equivalent to economizer bank supply unit.High temperature fluid reservoir 14es reclaims the water cavity by a kind of heated medium liquid Wq of economizer bank 12p heating, is equivalent to economizer bank recoverer.Be provided with an economizer bank supply unit (low temperature fluid reservoir 14ps) in the present embodiment, an economizer bank recoverer (high temperature fluid reservoir 14es), economizer bank 12p is made up of a paths.At this, so-called " path " refers to: in certain heat pipe 12, the fluid of flowing collaborate with the fluid in other heat pipes 12, and the flow direction does not change 180 degree and the unit of stream that flows.As long as the fluid flowed in path in heat pipe 12 will not flow to change 180 degree, and not at interflow, midway, then do not limit the quantity of heat pipe 12.
Except above-mentioned economizer bank 12p, be also connected with one end of many evaporation tube 12e at high temperature fluid reservoir 14es.One end is connected to the other end of whole evaporation tube 12e of high temperature fluid reservoir 14es, is connected to fluid-mixing room 14ec.In the present embodiment, be disposed in the one end of the whole evaporation tube 12e in tank body 11, be connected to high temperature fluid reservoir 14es, the other end is connected to fluid-mixing room 14ec.At this, high temperature fluid reservoir 14es is the water cavity distributing heated medium liquid Wq to many evaporation tube 12e, is equivalent to evaporation tube dispenser.That is, high temperature fluid reservoir 14es doubles as economizer bank recoverer and evaporation tube dispenser.In addition, fluid-mixing room 14ec is the water cavity reclaiming heated medium W from many evaporation tube 12e, is equivalent to evaporation tube collection unit.The bottom (being bottom typically) of high temperature fluid reservoir 14es is provided with the purging discharge pipe 17 can discharging heated medium liquid Wq.Be equipped at purging discharge pipe 17 and blow dump valve 17v.Effuser 84 is connected with on the top of fluid-mixing room 14ec.The economizer bank 12p arranged as described above and evaporation tube 12e will get design according to following.
First, the temperature (heated medium temperature setting operation) of the heated medium W in the temperature being directed to the heated medium W of low temperature fluid reservoir 14ps and fluid-mixing room 14ec is set.The temperature of the heated medium W in the 14ec of fluid-mixing room is the saturation temperature of mixing heated medium Wm.Next, to make economizer bank 12p become within the limits prescribed by the mode of heat heated from absorbing the heat that heat receives, the heat-conducting area (external surface area of economizer bank 12p) (economizer bank heat-conducting area setting operation) of setting economizer bank 12p.At this, the scope of regulation is the scope that in fact the heated medium liquid Wq flowing into high temperature fluid reservoir 14es does not comprise heated medium steam Wv.The so-called heated medium steam Wv that in fact do not comprise means: when heated medium W flows into each evaporation tube 12e from high temperature fluid reservoir 14es, allows the degree not producing the evaporation tube 12e only having heated medium steam Wv to enter to comprise heated medium steam Wv.In addition, economizer bank 12p is preferably formed at the flow velocity of the heated medium liquid Wq of internal flow is the flow path cross sectional area of 0.5m/s ~ 2m/s.Be supplied to the heat-conducting mode in the heat-conducting area of heat according to economizer bank 12p of economizer bank 12p, economizer bank 12p and flow velocity of heated medium liquid Wq of flowing in economizer bank 12p etc. and change.Next, set the heat-conducting area (external surface area of evaporation tube 12e) (evaporation tube heat-conducting area setting operation) of evaporation tube 12e from the mode that the hot heat received of absorption can obtain the heated medium steam Wv of desired flow with evaporation tube 12e.In addition, according to the pressure of the heated medium steam Wv produced by evaporation tube 12e and the temperature of heated medium liquid Wq being supplied to low temperature fluid reservoir 14ps, the suitable heat-conducting area change of economizer bank 12p is made.Common heated medium W is water, be 0.1 ~ 0.8MPa (gauge pressure) at the pressure of heated medium steam Wv, when the temperature being supplied to the heated medium liquid Wq of low temperature fluid reservoir 14ps is 20 ~ 80 DEG C, total heat-conducting area of evaporation tube 12e and the ratio of total heat-conducting area of economizer bank 12p are set as following.Namely, become excessive from the view point of the heat-conducting area suppressing heated medium liquid Wq with economizer bank 12p and evaporate in the inside of economizer bank 12p, total heat-conducting area of evaporation tube 12e can be formed as more than 1 times of total heat-conducting area of economizer bank 12p, is more preferably formed as more than 2 times.In addition, a part for the heat-conducting area of evaporation tube 12e is used for preheating from suppressing with the heat-conducting area deficiency of economizer bank 12p, the viewpoint that heat-conducting area reduces, the thermal efficiency is deteriorated for the evaporation tube 12e evaporated is set out, total heat-conducting area of evaporation tube 12e can be formed as less than 10 times of total heat-conducting area of economizer bank 12p, is more preferably formed as less than 8 times.In addition, certainly the situation of heat conduction is promoted (hereinafter referred to as " turbulent flow promote body etc. ") such as the surfaces externally and internally of heat pipe 12 being arranged turbulent flow promotion body, fin, groove, with not arrange when turbulent flow promotes body etc. compared with heat conduction amount and the ratio that heat conduction amount increases is multiplied by and does not have the new suitable heat-conducting area that when turbulent flow promotes body etc., heat-conducting area obtains, this suitable heat-conducting area is evaluated as the heat-conducting area specified herein.
Be accommodated in the concentrated solution spreading nozzle 13 in tank body 11, scatter the mode of concentrated solution Sa so that heat pipe 12 can not be spread all over, be extensively configured at when observing from vertical direction and cover heat pipe 12 on a large scale.Be connected to the concentrated solution pipe 35 of concentrated solution spreading nozzle 13, the one side of through tank body 11.In addition, multiple heat pipe 12 described above flatly configures in tank body 11, but so-called flatly configuration is not strict with as level, even if as long as be the heated medium W as liquid stream meandering flow in absorber 10, steam is become from liquid, the level of the degree that heated medium W also can not be hindered to flow in evaporation tube 12e.But, increase from the view point of the amount of the exterior surface making concentrated solution Sa and the heat pipe 12 scattered from concentrated solution spreading nozzle 13, more more preferred close to level.The weak solution Sw of the bottom being accumulated in tank body 11 is guided to the weak solution pipe 36 of regenerator 30 (with reference to Fig. 1), be connected to the bottom of tank body 11.
Heated medium liquid Wq in gas-liquid separator 80 is guided to the heated medium liquid pipe 82 of absorber 10, be connected to the low temperature fluid reservoir 14ps of the fluid reservoir of the most upstream of the liquid stream becoming heated medium W.Make-up pipe 85 is connected to heated medium liquid pipe 82.According to this structure, make the connecting portion of the pipe of heated medium W inflow absorber 10 be a position, can features simple structure be made, and maintenance test operation when opening water cavity becomes easy.The moist steam generated by absorber 10 (mixing heated medium Wm) is guided to the effuser 84 of gas-liquid separator 80, be connected to fluid-mixing room 14ec.
Next, main reference Fig. 3, also suitably with reference to Fig. 1, illustrates the effect around absorber 10.From the concentrated solution Sa that concentrated solution spreading nozzle 13 scatters, utilize solution pump 35p and from the pressurized conveying of regenerator 30.If concentrated solution Sa scatters from concentrated solution spreading nozzle 13, then fall because of gravity, first evaporation tube 12e is dropped on, concentrated solution Sa that is that do not contact with evaporation tube 12e and that drip down along the surface of evaporation tube 12e then drops on economizer bank 12p, thus infiltrates the surface spreading over each evaporation tube 12e and each economizer bank 12p.Infiltrate the concentrated solution Sa spreading over the surface of each evaporation tube 12e and each economizer bank 12p, absorb the evaporator refrigerant steam Ve supplied from evaporimeter 20, utilize the absorption heat produced at this moment to heat the heated medium W in internal flow.The concentrated solution Sa absorbed after evaporator refrigerant steam Ve becomes weak solution Sw, and after being temporarily accumulated in the bottom of tank body 11, is directed to regenerator 30 via weak solution pipe 36.
On the other hand, from the heated medium liquid Wq of gas-liquid separator 80, the low temperature fluid reservoir 14ps via heated medium liquid pipe 82 in inflow absorber 10.In the heated medium liquid Wq flowing into low temperature fluid reservoir 14ps, before inflow low temperature fluid reservoir 14ps, be mixed with make-up water Ws by make-up pump 86.In addition, flowing into the total flow of the heated medium liquid Wq of high temperature fluid reservoir 14es from make-up pipe 85 and gas-liquid separator 80, is about 2 ~ 10 times of the flow of the heated medium steam Wv generated by absorber 10 typically.Flow into the heated medium liquid Wq of low temperature fluid reservoir 14ps, flow at economizer bank 12p and flow into high temperature fluid reservoir 14es.When heated medium liquid Wq flows in economizer bank 12p, utilize the absorption produced when infiltrating the concentrated solution Sa spreading over the outer surface of economizer bank 12p and absorbing evaporator refrigerant steam Ve hot and heated.Now, in the temperature rising of the heated medium liquid Wq that economizer bank 12p flows, but do not evaporate.
Heated medium liquid Wq in high temperature fluid reservoir 14es flows into each evaporation tube 12e.Now, because in fact heated medium steam Wv is not present in high temperature fluid reservoir 14es, therefore heated medium liquid Wq flows into whole evaporation tube 12e.The heated medium liquid Wq flowed in each evaporation tube 12e, utilize the absorption produced when infiltrating the concentrated solution Sa spreading over the outer surface of evaporation tube 12e and absorbing evaporator refrigerant steam Ve hot and heated, till arrival fluid-mixing room 14ec, part or all evaporation.At this, when heated medium liquid Wq is water, if water evaporation becomes water vapour, then the volume of water vapour is increased to hundreds of times of water.Such as, though only evaporation water quality 1%, the several times that the volume that water vapour accounts for heated medium W entirety is increased to water are large.Therefore, suppose, even if the water when evaporate quality 1% flows into high temperature fluid reservoir 14es from economizer bank 12p, also exist and exceed water as liquid as the volume shared by the water vapour of gas, occur the situation of the evaporation tube 12e only flowing into water vapour from high temperature fluid reservoir 14es according to the situation of the flowing of heated medium W.When there is the evaporation tube 12e of the liquid that do not flow into heated medium W and only inflow gas, in this evaporation tube 12e, absorb the deterioration of efficiency of heat transfer to heated medium W.In the absorption heat pump 1 of present embodiment, flow into whole evaporation tube 12e by heated medium liquid Wq, thus absorption heat conducts to heated medium liquid Wq efficiently, can generate heated medium steam Wv efficiently thus.Become mixing heated medium Wm when being flowed in evaporation tube 12e by the heated medium W heated and arrive fluid-mixing room 14ec.Mixing heated medium Wm in the 14ec of fluid-mixing room flows at effuser 84 and flows out from absorber 10.Like this, the mixing heated medium Wm that the evaporation tube 12e be made up of a paths generates, obstructed pervaporation Guan Ercong absorber 10 flows out afterwards.
From the mixing heated medium Wm that absorber 10 flows out, flow into gas-liquid separator 80 via effuser 84.Flow into the mixing heated medium Wm of gas-liquid separator 80, collision deflection plate 80a and by gas-liquid separation, thus be divided into heated medium liquid Wq and heated medium steam Wv.Separated heated medium steam Wv flows in heated medium steam pipe 89 towards the steam utilization position outside absorption heat pump 1.On the other hand, the heated medium liquid Wq be separated by gas-liquid separator 80 is accumulated in the accumulating part 81 of gas-liquid separator 80 bottom.Be accumulated in the heated medium liquid Wq of separating liquid accumulating part 81, flow in heated medium liquid pipe 82.The heated medium liquid Wq of flowing in heated medium liquid pipe 82 collaborates with the make-up water Ws from make-up pipe 85, and flows into low temperature fluid reservoir 14ps, repeats above-mentioned effect afterwards.
As described above, absorption heat pump 1 according to the present embodiment, the heated medium W of high temperature fluid reservoir 14es is flowed into from economizer bank 12p, owing to being flow in the mode of liquid (heated medium liquid Wq), therefore, it is possible to avoid the front evaporator flowing into each evaporation tube 12e at the heated medium W flowing into each evaporation tube 12e.Do not flow into heated medium liquid Wq and the situation flowing into the evaporation tube 12e of heated medium steam Wv therefore, it is possible to prevent from producing in many evaporation tube 12e, thus the heat transfer efficiency to the heated medium W flowed in evaporation tube 12e can be suppressed to reduce.In addition, due to before heated medium liquid Wq is imported evaporation tube 12e, economizer bank 12p is used to carry out preheating, therefore, it is possible to carry out the generation of heated medium steam Wv in evaporation tube 12e efficiently.In addition, because economizer bank 12p is made up of a paths, therefore, it is possible to suppress to be heated excessively, thus the risk of the heated medium liquid Wq evaporation flowing into high temperature fluid reservoir 14es can be reduced.In addition, the flow path resistance reducing economizer bank 12p can be easy to, thus the circulation of heated medium W in absorber 10A and gas-liquid separator 80 can be strengthened.In addition, the height suppressing tank body 11 is easy to.In addition, discharge pipe 17 is purged owing to being provided with, blow dump valve 17v therefore, it is possible to open and suitably discharge the evaporated residue that the evaporation with heated medium liquid Wq generates, and the heated medium liquid Wq that can roughly discharge in tank body 11, thus can the possibility of remaining evaporated residue be down to minimum.In addition, because the high temperature fluid reservoir 14es (evaporation tube dispenser) heated medium liquid Wq being distributed to evaporation tube 12e is one, therefore blowing dump valve 17v is one, as long as operate one to blow dump valve 17v and just can carry out purging operation, thus absorber simple to operate can be become.
Next, be described with reference to the absorber 10A of Fig. 4 to variation.Absorber 10A is compared with absorber 10 (with reference to Fig. 3), different in the following areas.In the inside of two water cavity forming member 14 in two faces being installed on tank body 11 respectively, be respectively arranged with one piece of demarcation strip 15.Water cavity in a water cavity forming member 14 in two water cavity forming member 14 is separated by demarcation strip 15, thus is divided into low temperature fluid reservoir 14ps and high temperature fluid reservoir 14es.In addition, the water cavity in another water cavity forming member 14 is separated by demarcation strip 15, thus is divided into transfer fluid reservoir 14pm and fluid-mixing room 14ec.On the sectional view shown in Fig. 4, be connected with one end of the economizer bank 12p of more than one or two at low temperature fluid reservoir 14ps.The other end that one end is connected to whole economizer bank 12p of low temperature fluid reservoir 14ps is connected to transfer fluid reservoir 14pm.At transfer fluid reservoir 14pm except being connected with the economizer bank 12p that is communicated with low temperature fluid reservoir 14ps, be also connected with one end of the economizer bank 12p of more than one or two.The other end of this economizer bank 12p is connected to high temperature fluid reservoir 14es.Like this, in this variation, be provided with two kinds of economizer bank 12p of the economizer bank 12p connecting low temperature fluid reservoir 14ps and transfer fluid reservoir 14pm and the economizer bank 12p being connected transfer fluid reservoir 14pm and high temperature fluid reservoir 14es.Even if in this variation too, low temperature fluid reservoir 14ps is equivalent to economizer bank supply unit, and high temperature fluid reservoir 14es is equivalent to economizer bank recoverer.And in this variation, transfer fluid reservoir 14pm reclaims the heated medium liquid Wq heated by a kind of economizer bank 12p, and heated medium liquid Wq is supplied to the water cavity of another kind of economizer bank 12p, doubles as economizer bank supply unit and economizer bank recoverer.Namely, in this variation, be provided with two economizer bank supply units (low temperature fluid reservoir 14ps, transfer fluid reservoir 14pm) and two economizer bank recoverers (transfer fluid reservoir 14pm, high temperature fluid reservoir 14es), economizer bank 12p is made up of two paths.
Be configured in this variation, heated medium liquid Wq and the make-up water Ws flowed in make-up pipe 85 of flowing in heated medium liquid pipe 82, do not collaborate before inflow low temperature fluid reservoir 14ps.Heated medium liquid Wq in gas-liquid separator 80 is guided to the heated medium liquid pipe 82 of absorber 10A, be connected to high temperature fluid reservoir 14es.According to this structure, the heated medium liquid Wq from gas-liquid separator 80 higher for temperature is imported high temperature fluid reservoir 14es, thus the heating of heated medium W in evaporation tube 12e can be carried out efficiently.In addition, because the heated medium liquid Wq in gas-liquid separator 80 is the liquid of the saturation temperature state being separated heated medium steam Wv, so there is no the worry that there is heated medium steam Wv when being directed to high temperature fluid reservoir 14es.Make-up pipe 85 is connected to low temperature fluid reservoir 14ps.Therefore, the temperature of make-up water Ws becomes the temperature of the heated medium W being imported into low temperature fluid reservoir 14ps.According to this structure, the make-up water Ws that temperature is lower flows into economizer bank 12p, thus can suppress the situation that steam is mixed into the heated medium liquid Wq flowing into high temperature fluid reservoir 14es.In this variation, heated medium liquid pipe 82 is equivalent to circulation fluid stream, and make-up pipe 85 is equivalent to import stream.In addition, although the absorber 10A shown in Fig. 4 is not arranged purge discharge pipe 17 (Fig. 3 reference), this purging discharge pipe 17 be equipped arrange at absorber 10 (with reference to Fig. 3) blow dump valve 17v, but also can be arranged at the bottom of high temperature fluid reservoir 14es.Absorber 10A structure is than that described above identical with absorber 10 (with reference to Fig. 3).
In the absorber 10A formed as mentioned above, make-up pump 86 is utilized to supply make-up water Ws to the low temperature fluid reservoir 14ps in absorber 10A.Flow into the heated medium liquid Wq of low temperature fluid reservoir 14ps as make-up water Ws, flow at economizer bank 12p and arrive transfer fluid reservoir 14pm, and change the flow direction at transfer fluid reservoir 14pm and flow in other economizer banks 12p, and flow into high temperature fluid reservoir 14es.When heated medium liquid Wq flows in economizer bank 12p, utilize infiltrate spread over the outer surface of economizer bank 12p concentrated solution Sa to absorb evaporator refrigerant steam Ve time the absorption heat that produces and being heated.Now, although the heated medium liquid Wq temperature rising of flowing at economizer bank 12p, do not evaporate.Economizer bank 12p in this variation, because the temperature of the heated medium liquid Wq in internal flow is lower, and be disposed in foot in heat pipe 12, the temperature of the concentrated solution Sa therefore scattered from top reduces further, thus a large amount of absorption heat can be absorbed efficiently from concentrated solution Sa.The heated medium liquid Wq utilizing economizer bank 12p to heat up flows into high temperature fluid reservoir 14es, on the other hand, from the heated medium liquid Wq of gas-liquid separator 80, also flows into high temperature fluid reservoir 14es via heated medium liquid pipe 82.Like this, high temperature fluid reservoir 14es is flowed into by making the heated medium liquid Wq from gas-liquid separator 80 not flow into low temperature fluid reservoir 14ps, thus carry out preheating efficiently at economizer bank 12p and can not increase in the temperature of the heated medium liquid Wq of economizer bank 12p flowing, and the temperature flowing into the heated medium liquid Wq of evaporation tube 12e from high temperature fluid reservoir 14es raises, and in evaporation tube 12e, heated medium liquid Wq is easy to evaporation.In addition, owing to forming by being configured with the mulitpath (two paths) flowing to different economizer bank 12p up and down, therefore, it is possible to reduce the setting area of absorber 10.
Next, be described with reference to the absorber 10B of Fig. 5 to variation.Absorber 10B is compared with absorber 10A (with reference to Fig. 4), different in the following areas.Same with absorber 10 (with reference to Fig. 3), one of the inside of each water cavity forming member 14 is divided into low temperature fluid reservoir 14ps and fluid-mixing room 14ec by one piece of demarcation strip 15, and another does not arrange demarcation strip 15, and entirety becomes high temperature fluid reservoir 14es.In absorber 10B, low temperature fluid reservoir 14ps is equivalent to economizer bank supply unit, and high temperature fluid reservoir 14es doubles as economizer bank recoverer and evaporation tube dispenser, and fluid-mixing room 14ec is equivalent to evaporation tube collection unit.In absorber 10B, be provided with an economizer bank supply unit (low temperature fluid reservoir 14ps) and an economizer bank recoverer (high temperature fluid reservoir 14es), economizer bank 12p is made up of a paths.In addition, in absorber 10B, the water cavity forming member 14A forming high temperature fluid reservoir 14es is configured to, the position flowing into high temperature fluid reservoir 14es from heated medium liquid Wq from economizer bank 12p tends to the evaporation tube 12e be disposed in farthest, and the sectional area be provided with between the tube sheet 14Aj of the heat pipe 12 and inwall 14Ag being opposite to tube sheet 14Aj is successively decreased gradually.In absorber 10B, owing to respectively economizer bank 12p being flatly disposed in below, evaporation tube 12e being flatly disposed in top, the mode of therefore successively decreasing gradually along with tending to top from below with the area of the horizontal cross-section between tube sheet 14Aj and inwall 14Ag is formed.In addition, tube sheet 14Aj is equivalent to evaporation tube assembly wall.In addition, the bottom (being bottom typically) of high temperature fluid reservoir 14es is provided with the purging discharge pipe 17 having arranged and blown dump valve 17v.The structure than that described above of absorber 10B is identical with absorber 10A (with reference to Fig. 4).Therefore, be connected with make-up pipe 85 at low temperature fluid reservoir 14ps, be connected with heated medium liquid pipe 82 at high temperature fluid reservoir 14es, in fluid-mixing room, 14ec is connected with effuser 84.
According to the absorber 10B formed as mentioned above, owing to being configured to the area of the horizontal cross-section between tube sheet 14Aj and inwall 14Ag, successively decrease gradually along with tending to top from below, therefore, it is possible to suppress the deviation of the flow flowing into the heated medium liquid Wq of each evaporation tube 12e from high temperature fluid reservoir 14es.In addition, the structure of the horizontal sectional area between the tube sheet 14Aj of what absorber 10B adopted successively decrease gradually high temperature fluid reservoir 14es and inwall 14Ag, the absorber 10 (with reference to Fig. 3) that economizer bank 12p is a paths can not only be applied to, also can be applied to the absorber 10A (with reference to Fig. 4) that economizer bank 12p is mulitpath.
In the above description, evaporation tube 12e is formed as linearity, but also can absorber 10C as shown in Figure 6 such, be formed as U-shaped.In this case, high temperature fluid reservoir 14es (evaporation tube dispenser) and fluid-mixing room 14ec (evaporation tube collection unit), is formed at the inside of identical water cavity forming member 14 via demarcation strip 15.The Inner Constitution of this water cavity forming member 14 is, high temperature fluid reservoir 14es is formed at bottom, and fluid-mixing room 14ec is formed at top, and heated medium W flows upward from below in evaporation tube 12e thus.The inner utilization demarcation strip 15 of another water cavity forming member 14 and be divided into two spaces; one of them becomes low temperature fluid reservoir 14ps (economizer bank supply unit); remaining works as protecting the guard space of the bend of evaporation tube 12e, and does not flow into heated medium W.The evaporation tube 12e of this example possesses two row horizontal tube section, utilizes the reversion of U-shaped to connect a contrary side end of high temperature fluid reservoir 14es (evaporation tube dispenser), forms continual heat pipe.Except this structure, evaporation tube 12e also can be formed as possessing three row horizontal tube section, in three row horizontal tube section along the flow direction, utilize the reversion of U-shaped that a contrary side end of high temperature fluid reservoir 14es and high temperature fluid reservoir 14es side end are reciprocally connected the S font for continual heat pipe.Or, evaporation tube 12e also can be formed as, possesses four lines horizontal tube section, the reversion of U-shaped is utilized mutually to be connected one by one for the M font of continual heat pipe its end, or, also can be formed as the horizontal tube section possessing more multirow, utilize the reversion of U-shaped mutually to be connected one by one for the rivulose heat pipe of continual heat pipe its end.In either case, all utilize the inversion portion of U-shaped by multiple the continual evaporation tube 12e connected one by one for not intersecting with other evaporation tubes is formed by the end of horizontal tube section, high temperature fluid reservoir 14es (evaporation tube dispenser) and fluid-mixing room 14ec (evaporation tube collection unit) is connected to entrance and the outlet of above-mentioned evaporation tube 12e.In addition, Fig. 6 represents the example that economizer bank 12p is made up of a paths, but also under economizer bank 12p is by the basis that mulitpath is formed, evaporation tube 12e can be formed as U-shaped.In addition, in the example shown in Fig. 6, although economizer bank 12p is formed as linearity, economizer bank 12p also can be formed as the serpentine shape of U-shaped etc.
In the above description, the mode that evaporation tube 12e is formed as level with axis configures, but absorber 10D is as shown in Figure 7 such, also can be configured to the gradient upwards, that is: with the connecting portion of fluid-mixing room 14ec, be positioned at than the position high with the connecting portion of high temperature fluid reservoir 14es.The gradient upwards of evaporation tube 12e, considers to infiltrate the scope spreading over the absorbing liquid S of the outer surface of evaporation tube 12e, determines in the scope that can obtain desired absorption heat.If evaporation tube 12e is with the gradient upwards, then the heated medium steam Wv produced in evaporation tube 12e easily departs from fluid-mixing room 14ec.On the other hand, when flatly configuring evaporation tube 12e, the scope infiltrating and spread over the absorbing liquid S of outer surface can be expanded.In addition, although Fig. 7 represents the example that economizer bank 12p is made up of a paths, also can for economizer bank 12p by the basis that mulitpath is formed at evaporation tube 12e with the gradient upwards.In addition, in the example shown in Fig. 7, although flatly configure economizer bank 12p, economizer bank 12p also can with the gradient upwards or the downward gradient.Under economizer bank 12p arranges acclive situation, in the scope that can obtain desired absorption heat, determine the gradient.Or economizer bank 12p also can be formed as the serpentine shape such as U-shaped.
In the above description, although make-up pipe 85 is connected to heated medium liquid pipe 82 or low temperature fluid reservoir 14ps, also can be connected to gas-liquid separator 80, and be configured to the heated medium liquid Wq in make-up water Ws and gas-liquid separator 80 is collaborated.In this case, also the heated medium liquid Wq in gas-liquid separator 80 can be guided to low temperature fluid reservoir 14ps, and the pump of pressurized delivered heated medium liquid Wq is set at the pipe arrangement heated medium liquid Wq in gas-liquid separator 80 being guided to low temperature fluid reservoir 14ps.In addition, at the make-up water Ws that make-up pipe 85 flows with when collaborating at the heated medium liquid Wq that heated medium liquid pipe 82 flows and be imported into low temperature fluid reservoir 14ps, or, low temperature fluid reservoir 14ps is imported at make-up water Ws, when heated medium liquid Wq in gas-liquid separator 80 is imported into high temperature fluid reservoir 14es, the pump of pressurized delivered heated medium liquid Wq also can be set at the heated medium liquid pipe 82 heated medium liquid Wq in gas-liquid separator 80 being guided to high temperature fluid reservoir 14es.
In the above description, although be illustrated the situation that absorption heat pump 1 is single-stage pump, absorption heat pump 1 also can be multistage pump.
The structure of secondary temperature-boosting absorption heat pump 8 is exemplified at Fig. 8.Absorber 10 in absorption heat pump 1 shown in Fig. 1 of absorption heat pump 8 and evaporimeter 20, be divided into the high temperature absorber 10H of high temperature side and high-temperature evaporator 20H, the low temperature absorption device 10L of low temperature side and cryogenic vaporizer 20L.High temperature absorber 10H is higher than pressing in low temperature absorption device 10L, and high-temperature evaporator 20H is higher than pressing in cryogenic vaporizer 20L.High temperature absorber 10H and high-temperature evaporator 20H, is communicated with on top to the mode of high temperature absorber 10H movement can make the steam of the cold-producing medium V of high-temperature evaporator 20H.Low temperature absorption device 10L is communicated with to the mode of low temperature absorption device 10L movement on top can make the steam of the cold-producing medium V of cryogenic vaporizer 20L with cryogenic vaporizer 20L.Heated medium liquid Wq utilizes high temperature absorber 10H and is heated.Thermal source hot water h is imported into cryogenic vaporizer 20L.Low temperature absorption device 10L is configured to: utilize the absorption absorbed when moving the steam of the cold-producing medium V come from cryogenic vaporizer 20L in solution S hot, refrigerant liquid Vf in high-temperature evaporator 20H is heated, make the steam producing cold-producing medium V in high-temperature evaporator 20H, and utilize the steam of the cold-producing medium V in the high-temperature evaporator 20H produced to move to high temperature absorber 10H, and absorption heat when being absorbed by the absorbing liquid S in high temperature absorber 10H, heating heated medium liquid Wq.Like this, in absorption heat pump 8, the structure around the absorber shown in Fig. 3 ~ Fig. 7 is applied to high temperature absorber 10H.Even if when the absorption heat pump for more than three grades, also the structure around the absorber shown in Fig. 3 ~ Fig. 7 can be applied to typically internal temperature and the highest absorber of interior pressure.
In the above description, what heated medium W was supplied to the outside of absorption heat pump 1 as heated medium steam Wv utilizes steam position, but the cold-producing medium V that also can use for heat pump cycle.In this case, the structure around the absorber shown in Fig. 3 ~ Fig. 7 can be applied to the low temperature absorption device 10L of the absorption heat pump 8 shown in Fig. 8, in other words, the absorber beyond internal temperature and the highest absorber of interior pressure can be applied to.
Claims (14)
1. an absorption heat pump, possesses absorber, this absorber makes the liquid of heated medium circulate at many heat pipes, and make absorbing liquid drop on the outside of described heat pipe, utilize the absorption heat produced during the steam of described absorbing liquid absorption refrigeration agent, the described heated medium circulated is heated, make described heated medium at described heat conduction in-tube evaporation in described heat pipe, the feature of described absorption heat pump is
Described heat pipe has:
Economizer bank, the liquid of described heated medium imports and heats and make it to heat up by it; With
Evaporation tube, the liquid of described heated medium after utilizing described economizer bank to heat up imports and heats and make it to evaporate by it,
In the mode making described absorbing liquid fall according to the order of described evaporation tube, described economizer bank, arrange described evaporation tube and described economizer bank,
Described absorber has outflow stream, this outflow stream is configured to: one end of evaporation tube described in each is connected to the evaporation tube dispenser that evaporation tube described in Xiang Duogen distributes described heated medium, the other end of evaporation tube described in each is connected to the evaporation tube collection unit of collecting described heated medium from many described evaporation tubes, and make described heated medium flow out to the outside of described absorber from described evaporation tube collection unit
Described evaporation tube dispenser and described evaporation tube collection unit are formed by one respectively, and are configured to: at the described heated medium of many described evaporation tube internal flows separately, are not collaborating between described evaporation tube collection unit from described evaporation tube dispenser.
2. absorption heat pump according to claim 1, is characterized in that,
Be configured to: described economizer bank becomes the scope of the steam in fact not comprise described heated medium to the heat of the heating liquid of the described heated medium of the described evaporation tube dispenser of inflow from the described heat absorbing heat reception.
3. absorption heat pump according to claim 1, is characterized in that,
Total heat-conducting area of many described evaporation tubes is more than 1 times of total heat-conducting area of described economizer bank and less than 10 times.
4. absorption heat pump according to claim 2, is characterized in that,
Total heat-conducting area of many described evaporation tubes is more than 1 times of total heat-conducting area of described economizer bank and less than 10 times.
5. the absorption heat pump according to any one in claims 1 to 3, is characterized in that, possesses:
Gas-liquid separator, the liquid of described heated medium flowed out from described outflow stream and the fluid-mixing of steam are separated into by it: the steam of described heated medium and the liquid of described heated medium;
Circulation fluid stream, the liquid of the described heated medium in described gas-liquid separator is guided to described evaporation tube dispenser by it; And
Import stream, it, by utilizing the described liquid of described heated medium absorbed before heat heating, guides to the economizer bank supply unit supplying described heated medium to described economizer bank.
6. absorption heat pump according to claim 4, is characterized in that, possesses:
Gas-liquid separator, the liquid of described heated medium flowed out from described outflow stream and the fluid-mixing of steam are separated into by it: the steam of described heated medium and the liquid of described heated medium;
Circulation fluid stream, the liquid of the described heated medium in described gas-liquid separator is guided to described evaporation tube dispenser by it; And
Import stream, it, by utilizing the described liquid of described heated medium absorbed before heat heating, guides to the economizer bank supply unit supplying described heated medium to described economizer bank.
7. the absorption heat pump according to any one in claims 1 to 3, is characterized in that,
Described economizer bank is made up of mulitpath, and described mulitpath is respectively arranged with: the multiple economizer bank supply unit described heated medium being supplied to described economizer bank and the multiple economizer bank recoverers reclaimed by the heated medium after utilizing described economizer bank to heat.
8. the absorption heat pump according to any one in claim 4, is characterized in that,
Described economizer bank is made up of mulitpath, and described mulitpath is respectively arranged with: the multiple economizer bank supply unit described heated medium being supplied to described economizer bank and the multiple economizer bank recoverers reclaimed by the heated medium after utilizing described economizer bank to heat.
9. the absorption heat pump according to any one in claims 1 to 3, is characterized in that,
Described economizer bank is made up of a paths, and a described paths has: the economizer bank supply unit described heated medium being supplied to described economizer bank and the economizer bank recoverer reclaimed by the heated medium after utilizing described economizer bank to heat.
10. absorption heat pump according to claim 4, is characterized in that,
Described economizer bank is made up of a paths, and a described paths has: the economizer bank supply unit described heated medium being supplied to described economizer bank and the economizer bank recoverer reclaimed by the heated medium after utilizing described economizer bank to heat.
11. absorption heat pumps according to any one in claims 1 to 3, is characterized in that,
Described evaporation tube dispenser is configured to: the evaporation tube assembly wall being provided with many described evaporation tubes with the sectional area in the face orthogonal with described evaporation tube assembly wall between the inwall of described evaporation tube assembly wall is: tend to from the position that described heated medium flows into described evaporation tube dispenser and described economizer bank described evaporation tube farthest and successively decreasing gradually.
12. absorption heat pumps according to claim 4, is characterized in that,
Described evaporation tube dispenser is configured to: the evaporation tube assembly wall being provided with many described evaporation tubes with the sectional area in the face orthogonal with described evaporation tube assembly wall between the inwall of described evaporation tube assembly wall is: tend to from the position that described heated medium flows into described evaporation tube dispenser and described economizer bank described evaporation tube farthest and successively decreasing gradually.
13. absorption heat pumps according to any one in claims 1 to 3, is characterized in that,
Described absorber has purging discharge pipe, and this purging discharge pipe is arranged at the bottom of described evaporation tube dispenser and discharges described heated medium.
14. absorption heat pumps according to claim 4, is characterized in that,
Described absorber has purging discharge pipe, and this purging discharge pipe is arranged at the bottom of described evaporation tube dispenser and discharges described heated medium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-191247 | 2014-09-19 | ||
| JP2014191247A JP6429550B2 (en) | 2014-09-19 | 2014-09-19 | Absorption heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105444467A true CN105444467A (en) | 2016-03-30 |
| CN105444467B CN105444467B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510590557.XA Active CN105444467B (en) | 2014-09-19 | 2015-09-16 | Absorption heat pump |
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| JP (1) | JP6429550B2 (en) |
| CN (1) | CN105444467B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830657A (en) * | 2017-09-14 | 2018-03-23 | 中国科学院理化技术研究所 | Alternating temperature cools down absorber and Absorption heat-transformer system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022056869A (en) * | 2020-09-30 | 2022-04-11 | 株式会社デンソー | Refrigeration cycle device |
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| JPS5848746U (en) * | 1981-09-30 | 1983-04-01 | 石川島播磨重工業株式会社 | Waste heat recovery device in coke dry fire extinguishing equipment |
| JPH06254623A (en) * | 1993-03-08 | 1994-09-13 | Matsushita Refrig Co Ltd | Manufacture of refrigerant shunt device and refrigerant shunt device |
| JPH1163404A (en) * | 1997-08-25 | 1999-03-05 | Babcock Hitachi Kk | Waste heat recovery boiler and method of preventing corrosion of expansion joint of bottom plate of smoke duct of drain pipe piercing part |
| JP2010164248A (en) * | 2009-01-16 | 2010-07-29 | Ebara Corp | Absorption heat pump |
| CN102287951A (en) * | 2010-06-18 | 2011-12-21 | 荏原冷热系统株式会社 | Absorbing heat pump |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5848746U (en) * | 1981-09-30 | 1983-04-01 | 石川島播磨重工業株式会社 | Waste heat recovery device in coke dry fire extinguishing equipment |
| JPH06254623A (en) * | 1993-03-08 | 1994-09-13 | Matsushita Refrig Co Ltd | Manufacture of refrigerant shunt device and refrigerant shunt device |
| JPH1163404A (en) * | 1997-08-25 | 1999-03-05 | Babcock Hitachi Kk | Waste heat recovery boiler and method of preventing corrosion of expansion joint of bottom plate of smoke duct of drain pipe piercing part |
| JP2010164248A (en) * | 2009-01-16 | 2010-07-29 | Ebara Corp | Absorption heat pump |
| CN102287951A (en) * | 2010-06-18 | 2011-12-21 | 荏原冷热系统株式会社 | Absorbing heat pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107830657A (en) * | 2017-09-14 | 2018-03-23 | 中国科学院理化技术研究所 | Alternating temperature cools down absorber and Absorption heat-transformer system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016061519A (en) | 2016-04-25 |
| CN105444467B (en) | 2020-02-14 |
| JP6429550B2 (en) | 2018-11-28 |
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