CN102853576A - Boiling regeneration type heat pump system for heat source tower - Google Patents
Boiling regeneration type heat pump system for heat source tower Download PDFInfo
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- CN102853576A CN102853576A CN2012103764022A CN201210376402A CN102853576A CN 102853576 A CN102853576 A CN 102853576A CN 2012103764022 A CN2012103764022 A CN 2012103764022A CN 201210376402 A CN201210376402 A CN 201210376402A CN 102853576 A CN102853576 A CN 102853576A
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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
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- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The invention discloses a boiling regeneration type heat pump system for a heat source tower. The heat source tower is respectively connected with an adjusting valve I and an adjusting valve II; the adjusting valve I, a solution heat exchanger, a throttling valve I, a boiling type regenerator and a solution pump are sequentially connected; the solution pump is further connected with the solution heat exchanger; the adjusting valve II is connected with a cooling water pump; the cooling water pump is respectively connected with an outdoor change-over valve group and the solution heat exchanger; the boiling type regenerator is connected with an external low-level heat source; the outdoor change-over valve group is respectively connected with the solution heat exchanger, the hot source tower and the outdoor heat exchanger; the outdoor heat exchanger is connected with a four-way reversing valve; the four-way reversing valve is respectively connected with a compressor and a port of an indoor heat exchanger; the port of the indoor heat exchanger is respectively connected with a throttling valve II and an indoor reversing valve group; the throttling valve II is respectively connected with a one-way valve I and a one-way valve II; the one-way valve II is connected with a condenser; the condenser is connected with the one-way valve I and the outdoor heat exchanger; and a bypass valve is respectively connected with the one-way valve II and the condenser.
Description
Technical field
The present invention relates to the Refrigeration ﹠ Air-Conditioning equipment technical field, especially a kind of boiling regenerative heat source tower heat pump system.
Background technology
The water-cooled handpiece Water Chilling Units is a kind of very general configuration in the air-conditioning system, but but can not play a role in the winter time, in order to satisfy the thermic load needs, also need to acquire special heating system, as be equipped with boiler room or heat exchange station, and increased to a certain extent the initial cost of system, and not energy-conservation.If the employing air source heat pump system then do not need to dispose special heating system, and system also has higher COP under the winter condition again, but it is subject to the puzzlement of frosting in winter problem easily.In recent years, the heat source tower heat pump system that has the scholar to propose to utilize heat source tower from air, to absorb heat under the heating condition in the winter time, and by the application verification in Practical Project its practical value.The heat source tower heat pump system has following some advantage, and the first, thus it can make its freezing point be lower than 0 ℃ by the concentration that changes circulation solution effectively to solve the frosting problem that exists in the air source heat pump; The second, heat source tower heat pump summer cooling, Winter heat supply so that water-cooled handpiece Water Chilling Units dual-use has replaced special heating system, have larger saving on initial cost and operating cost; The 3rd, the heat source tower heat pump system is easy to implement, adopts all to have stronger feasibility in newly-built or reconstruction air-conditioning system.But heat source tower heat pump in the winter time under the operating mode during operation because circulation solution moisture absorption meeting reduces its concentration, therefore just need to regenerate to solution for the running status of keeping system.Doctor Wen Xiantai of Southeast China University has proposed a kind of regeneration of waste liquor mode (application number 201010567051.4), namely adopt regeneration air and the solution of closed cycle to carry out the caloic exchange, regeneration air is lowered the temperature and dehumidify with evaporimeter, with the condensation heat heated solution of condenser discharging, the excessive moisture in the last solution is discharged with the condensed water form.Professor Chen Guangming of Zhejiang University has proposed another regeneration (application number 200910098008.5), namely utilize the subcooler heated solution of heat pump and contact with the regeneration air of open circulation, by regeneration air the excessive moisture in the solution is carried out system at last.These two kinds of regenerations have all adopted non-boiling formula regeneration, inherent defect with non-boiling formula regeneration, ie in solution has larger potential difference when contacting with regeneration air, and the thermal regeneration air need to expend more heat, in addition, for the former, evaporimeter also will be lowered the temperature to regeneration air except dehumidifying, and energy consumption is larger; For the latter, utilize the subcooler heated solution can reduce heat pump COP, and evaporation latent heat discharge system with regeneration air, for the evaporimeter that under heating condition, is just needing thermal source, cause to a certain extent waste.For this reason, be necessary to develop a kind of inherent defect that can overcome non-boiling formula regeneration, to reduce energy consumption, enlarge low-grade heat source and utilize scope, simultaneously the energy is carried out the heat source tower heat pump system of cascade utilization, the present invention proposes for addressing the above problem.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of boiling regenerative heat source tower heat pump system, makes it have that energy consumption is low, low-grade heat source utilizes the wide characteristics of scope.
In order to solve the problems of the technologies described above, the present invention proposes a kind of boiling regenerative heat source tower heat pump system, and its specific implementation such as Fig. 1 comprise heat pump subsystem, heat source tower subsystem and regeneration of waste liquor subsystem; The regeneration of waste liquor subsystem comprises control valve I, solution heat exchanger, choke valve I, boiling type regenerator, solution pump, condenser, condensation water tank and condensate pump; The heat pump subsystem comprises outdoor heat exchanger, four-way change-over valve, compressor, indoor heat exchanger, choke valve II, condenser, check valve I, check valve II and by-passing valve; The heat source tower subsystem comprises heat source tower, control valve II, cooling water pump, outdoor heat exchanger and outdoor conversion valve set; Be disposed with from top to bottom spray thrower, new wind passage and solution storage chamber in the described heat source tower, described solution storage is provided with taphole in the chamber; Be provided with concentrated solution passage and weak solution passage in the described solution heat exchanger, the two ends of described concentrated solution passage are respectively arranged with concentrated solution import and concentrated solution outlet, and the two ends of described weak solution passage are respectively arranged with dilute solution inlet and weak solution outlet; The taphole in described solution storage chamber is divided into two-way, and one the tunnel is connected with the control valve I, and one the tunnel is connected with the control valve II; Described control valve I also is connected with the dilute solution inlet of solution heat exchanger, the weak solution outlet of solution heat exchanger is connected with the choke valve I, the choke valve I is connected with the dilute solution inlet of boiling type regenerator, the concentrated solution outlet of boiling type regenerator is connected with solution pump, and solution pump is connected with the concentrated solution import of solution heat exchanger; Described boiling type regenerator is connected with outside low-grade heat source; Described control valve II also is connected with cooling water pump; Cooling water pump is connected with the concentrated solution outlet of outdoor conversion valve set and solution heat exchanger respectively; Described outdoor conversion valve set is connected with concentrated solution outlet, spray thrower and the outdoor heat exchanger of solution heat exchanger respectively; Described outdoor heat exchanger is connected with four-way change-over valve; Described four-way change-over valve is connected with the indoor heat exchanger port with compressor respectively; Described indoor heat exchanger port is connected with the choke valve II; Described indoor heat exchanger port also is connected with indoor conversion valve set; Described choke valve II is connected with the liquid outlet of check valve I and the inlet of check valve II respectively; The liquid outlet of described check valve II is connected with the solution inlet port of condenser; The taphole of described condenser is connected with inlet and the outdoor heat exchanger of check valve I respectively; Described by-passing valve is connected taphole with the inlet of check valve II respectively and is connected with condenser; Above-described heat pump subsystem is by outdoor heat exchanger and the coupling of heat source tower subsystem, by condenser and the coupling of regeneration of waste liquor subsystem.
As the improvement to boiling regenerative heat source tower heat pump of the present invention system: be provided with stop valve I, stop valve II, stop valve III, stop valve IV in the described outdoor conversion valve set; The rear formation series loop that is connected successively of described stop valve I, stop valve II, stop valve III and stop valve IV, the solution that is provided with outdoor conversion valve set between stop valve II and stop valve III is imported and exported IV, the solution that is provided with outdoor conversion valve set between stop valve I and stop valve IV is imported and exported I, the solution that is provided with outdoor conversion valve set between stop valve I and stop valve II is imported and exported II, and the solution that is provided with outdoor conversion valve set between stop valve III and stop valve IV is imported and exported III; Be provided with stop valve I, stop valve II, stop valve III and stop valve IV in the described indoor conversion valve set; The rear formation series loop that is connected successively of described stop valve I, stop valve II, stop valve III and stop valve IV, the solution that is provided with outdoor conversion valve set between stop valve II and stop valve III is imported and exported III, the solution that is provided with outdoor conversion valve set between stop valve I and stop valve IV is imported and exported II, the solution that is provided with outdoor conversion valve set between stop valve I and stop valve II is imported and exported I, and the solution that is provided with outdoor conversion valve set between stop valve III and stop valve IV is imported and exported IV; Be provided with outdoor heat exchanger port I, outdoor heat exchanger port II, outdoor heat exchanger port III and outdoor heat exchanger port IV on the described outdoor heat exchanger; Be provided with indoor heat exchanger port I, indoor heat exchanger port II, indoor heat exchanger port III and indoor heat exchanger port IV on the described indoor heat exchanger; Be provided with four-way change-over valve port I, four-way change-over valve port II, four-way change-over valve port III and four-way change-over valve port IV on the described four-way change-over valve; The solution of described outdoor conversion valve set is imported and exported I and is connected with spray thrower, the solution of described outdoor conversion valve set is imported and exported II and is connected with outdoor heat exchanger port III, the solution of outdoor conversion valve set is imported and exported III and is connected with outdoor heat exchanger port IV, the solution of described outdoor conversion valve set is imported and exported IV and is connected with the concentrated solution outlet of cooling water pump and solution heat exchanger respectively, outdoor heat exchanger port I is connected with four-way change-over valve port I, the exhaust outlet of described compressor is connected with four-way change-over valve port IV, the air entry of compressor is connected with four-way change-over valve port II, four-way change-over valve port III is connected with indoor heat exchanger port I, indoor heat exchanger port II is connected with the choke valve II, the inlet of check valve I is connected with taphole and the outdoor heat exchanger port II of condenser respectively, indoor heat exchanger port III is imported and exported II with the solution of outdoor conversion valve set and is connected, indoor heat exchanger port IV is imported and exported III with the solution of outdoor conversion valve set and is connected, and the solution import and export IV that the solution of outdoor conversion valve set is imported and exported I and outdoor conversion valve set is connected with water inlet with the delivery port of low-grade heat source respectively.
As the further improvement to boiling regenerative heat source tower heat pump of the present invention system: described low-grade heat source is from surface water, underground water, buried pipe heat exchange system, solar water heating system or other waste heat source.
As the further improvement to boiling regenerative heat source tower heat pump of the present invention system: the working medium in the heat source tower subsystem can adopt calcium chloride solution or lithium-bromide solution.
This system adopts the boiling type regeneration, utilize low-grade heat source that circulation solution is regenerated, and with the coupling of condenser and evaporimeter, have that heat source temperature is less demanding, low-grade heat source utilizes that scope is wide, flexible adjustment, characteristics that feasibility is strong, be easy to apply.
The present invention compares with existing heat source tower heat pump system, has the following advantages:
1) heat pump subsystem and regeneration of waste liquor subsystem are coupled by condenser, and the latent heat of the water vapour of separating out when having reclaimed regeneration has reduced heat demand to heat source tower by cascaded utilization of energy, and the solution hygroscopic capacity is reduced, and having reduced regeneration and having loaded.
2) moisture in the solution is separated out by inner evaporation mode in the boiling type regenerator, have stronger mass transfer effect and needn't rely on than the surface evaporation mode in the non-boiling formula regenerator and improve solution temperature and keep potential difference between solution and regeneration air, therefore can reduce the requirement to the low-grade heat source temperature, enlarge to a certain extent the scope of utilizing of low-grade heat source.
3) owing to adopted the boiling type regeneration, avoided the heat that heating consumes to regeneration air in the regeneration of non-boiling formula, therefore under the same regeneration amount, the heat of the low-grade heat source that consumes still less, the regeneration efficiency of system is higher.
Description of drawings
Fig. 1 is the system flow chart of boiling regenerative heat source tower heat pump of the present invention;
Fig. 2 is the structural representation of outdoor conversion valve set 19 among Fig. 1;
Fig. 3 is the structural representation of indoor conversion valve set 20 among Fig. 1.
The specific embodiment
Embodiment 1, Fig. 1 have provided a kind of boiling regenerative heat source tower heat pump system; Comprise heat pump subsystem, heat source tower subsystem and regeneration of waste liquor subsystem; The regeneration of waste liquor subsystem comprises that control valve I 2, solution heat exchanger 3, choke valve I 4, boiling type regenerator 5, solution increase pump 6, condenser 10, condensation water tank 11 and condensate pump 12; The heat pump subsystem comprises outdoor heat exchanger 7, four-way change-over valve 14, compressor 15, indoor heat exchanger 16, choke valve II 13, condenser 10, check valve I 18, check valve II 17 and by-passing valve 21; The heat source tower subsystem comprises heat source tower 1, control valve II 8, circulating pump 9, outdoor heat exchanger 7 and outdoor conversion valve set 19.There is coupled relation in above-described three sub-systems, and namely the heat pump subsystem is coupled by outdoor heat exchanger 7 and heat source tower subsystem, and by condenser 10 and the coupling of regeneration of waste liquor subsystem.
Be disposed with from top to bottom spray thrower, new wind passage and solution storage chamber in the heat source tower 1, described solution storage is provided with taphole in the chamber; Be provided with concentrated solution passage and weak solution passage in the solution heat exchanger 3, the two ends of described concentrated solution passage are respectively arranged with concentrated solution import and concentrated solution outlet, and the two ends of described weak solution passage are respectively arranged with dilute solution inlet and weak solution outlet; Outdoor conversion valve set 19 comprises stop valve I 191, stop valve II 192, stop valve III 193 and stop valve IV 194, stop valve I 191, stop valve II 192, the rear formation series loop that is connected successively of stop valve III 193 and stop valve IV 194, passage between stop valve II 192 and stop valve III 193 is provided with the solution of outdoor conversion valve set 19 and imports and exports IV, passage between stop valve I 191 and stop valve IV 194 is provided with the solution of outdoor conversion valve set 19 and imports and exports I, passage between stop valve I 191 and stop valve II 192 is provided with the solution of outdoor conversion valve set 19 and imports and exports II, and the passage between stop valve III 193 and stop valve IV 194 is provided with the solution of outdoor conversion valve set 19 and imports and exports III.Indoor conversion valve set 20 comprises stop valve I 201, stop valve II 202, stop valve III 203 and stop valve IV 204, stop valve I 201, stop valve II 202, the rear formation series loop that is connected successively of stop valve III 203 and stop valve IV 204, passage between stop valve II 202 and stop valve III 203 is provided with the solution of outdoor conversion valve set 20 and imports and exports III, the have family solution of external conversion valve group 20 of the passage that arranges between stop valve I 201 and stop valve IV 204 is imported and exported II, passage between stop valve I 201 and stop valve II 202 is provided with the solution of outdoor conversion valve set 20 and imports and exports I, and the passage between stop valve III 203 and stop valve IV 204 is provided with the solution of outdoor conversion valve set 20 and imports and exports IV.Be provided with outdoor heat exchanger port I 71, outdoor heat exchanger port II 72, outdoor heat exchanger port III 73 and outdoor heat exchanger port IV 74 on the outdoor heat exchanger 7; Be provided with indoor heat exchanger port I 161, indoor heat exchanger port II 162, indoor heat exchanger port III 163 and indoor heat exchanger port IV 164 on the indoor heat exchanger 16; Be provided with four-way change-over valve port I 141, four-way change-over valve port II 142, four-way change-over valve port III 143 and four-way change-over valve port IV 144 on the four-way change-over valve 14; The taphole in solution storage chamber is divided into two-way, and one the tunnel is connected with control valve I 2, and one the tunnel is connected with control valve II 8; Concrete connection is as follows:
Wherein one the tunnel: control valve I 2 is connected with the dilute solution inlet of solution heat exchanger 3, the weak solution outlet of solution heat exchanger 3 is connected with choke valve I 4, choke valve I 4 is connected with the dilute solution inlet of boiling type regenerator 5, concentrated solution outlet and the solution of boiling type regenerator 5 increase pump 6 and are connected, and solution increases pump 6 and is connected with the concentrated solution import of solution heat exchanger 3;
Other one the tunnel: control valve II 8 is connected with circulating pump 9; Circulating pump 9 is connected with the concentrated solution outlet of solution heat exchanger 3 and the solution import and export IV of outdoor conversion valve set 19 respectively, and the solution of outdoor conversion valve set 19 is imported and exported IV and is connected with the concentrated solution outlet of solution heat exchanger 3.
The solution of outdoor conversion valve set 19 is imported and exported I and is connected with spray thrower.The solution of outdoor conversion valve set 19 is imported and exported II and is connected with outdoor heat exchanger port III 73, the solution of outdoor conversion valve set 19 is imported and exported III and is connected with outdoor heat exchanger port IV 74, outdoor heat exchanger port I 71 is connected with four-way change-over valve port I 141, four-way change-over valve port II 142 forms the loop by compressor 15 and four-way change-over valve port IV 144, and (exhaust outlet of compressor 15 is connected with four-way change-over valve port IV 144, the air entry of compressor 15 is connected with four-way change-over valve port II 142), four-way change-over valve port III 143 is connected with indoor heat exchanger port I 161, indoor heat exchanger port II 162 is connected with choke valve II 13, choke valve II 13 is connected with the liquid outlet of check valve I 18 and the inlet of check valve II 17 respectively, the liquid outlet of check valve II 17 is connected with the solution inlet port of condenser 10, the inlet of check valve I 18 is connected with taphole and the outdoor heat exchanger port II 72 of condenser 10 respectively, links to each other by by-passing valve 21 at the taphole of check valve II 17 and condenser 10.
Be provided with port I 51 and port II 52 on the boiling type regenerator 5, by the port I 51 of boiling type regenerator 5 and the port II 52 of boiling type regenerator 5, can link to each other with the import and export of outside low-grade heat source supplying system.Indoor heat exchanger port III 163 is imported and exported II with the solution of outdoor conversion valve set 20 and is connected, and the solution of indoor heat exchanger port IV 164 and outdoor conversion valve set 20 is imported and exported III and is connected.The solution import and export I that the solution of indoor conversion valve set 20 is imported and exported IV and outdoor conversion valve set 20 links to each other with delivery port with the water inlet of outside cooling (heat) system respectively.
The above outside low-grade heat source can be from surface water, underground water, buried pipe heat exchange system, solar water heating system or other waste heat source.
When the above heat pump subsystem is worked under heating mode, stop valve V 201 and stop valve VII 203 are closed, stop valve VI 202 and stop valve VIII 204 are opened, enter in the indoor heat exchanger 16 from indoor heat exchanger port IV 164 from outside heating system hot water backwater out, flow out from indoor heat exchanger port III 163, hot water carries out countercurrent flow with cryogen in indoor heat exchanger 16 again.When the heat pump subsystem is worked under cooling condition, stop valve V 201 and stop valve VII 203 are opened, stop valve VI 202 and stop valve VIII 204 are closed, enter from indoor heat exchanger port III 163 from outside cold supply system cold-water return out, flow out from indoor heat exchanger port IV 164, in indoor heat exchanger 16, carry out countercurrent flow with cryogen.
When described heat source tower subsystem is worked, be divided into again two kinds of mode of operations under heating mode, i.e. general modfel and regeneration mode and under two kinds of patterns, switch.Under the general modfel, control valve II 8 and circulating pump 9 are opened, the regeneration of waste liquor subsystem keeps closing simultaneously, along with solution when constantly the water vapour in the absorbing air and concentration are reduced to a certain degree in heat source tower, then enter regeneration mode, at this moment, control valve II 8 and circulating pump 9 are closed, the regeneration of waste liquor subsystem is opened and is carried out regeneration of waste liquor simultaneously, when solution concentration is elevated to a certain degree, then again switches to general modfel.Under heating mode, stop valve I 191 and stop valve III 193 keep closing, stop valve II 192 and stop valve IV 194 stay open, enter in the outdoor heat exchanger 7 from outdoor heat exchanger port III 73 from heat source tower 1 solution out, flow out from outdoor heat exchanger port IV 74, solution carries out countercurrent flow with cryogen in outdoor heat exchanger 7 again.
When described heat source tower subsystem was worked under refrigeration mode, control valve II 8 and circulating pump 9 were opened, and the regeneration of waste liquor subsystem keeps closing, and the function of heat source tower 1 namely is equivalent to common cooling tower.Stop valve I 191 and stop valve III 193 are opened, stop valve II 192 and stop valve IV 194 are closed, from heat source tower 1(by the cooling tower mode operation) out cooling water enters in the outdoor heat exchanger 7 from outdoor heat exchanger port IV 74, flow out from outdoor heat exchanger port III 73, cooling water carries out countercurrent flow with cryogen in outdoor heat exchanger 7 again.
During the regeneration of waste liquor subsystem work, boiling type regenerator 5, condenser 10, condensation water tank 11 are the negative pressure operation.Heat source tower subsystem and the working medium of regeneration of waste liquor subsystem under heating mode are calcium chloride solution or lithium-bromide solution, and its freezing point should more outdoor design environment temperature be hanged down 10 ℃ than the winter.The working medium of heat source tower subsystem under refrigeration mode is water.
The specific works step of boiling regenerative heat source tower heat pump system of the present invention when reality is used is as follows:
A, under heating mode, be divided into two kinds of mode of operations, i.e. general modfel and regeneration mode and under two kinds of patterns, switch.Under the general modfel, control valve II 8 and circulating pump 9 are opened, the regeneration of waste liquor subsystem keeps closing simultaneously, along with solution when constantly the water vapour in the absorbing air and concentration are reduced to a certain degree in heat source tower, then enter regeneration mode, at this moment, control valve II 8 and circulating pump 9 are closed, the regeneration of waste liquor subsystem is opened and is carried out regeneration of waste liquor simultaneously, when solution concentration is elevated to a certain degree, then again switches to general modfel.Heat pump subsystem and heat source tower subsystem remain operation under the heating mode.The heat pump subsystem is by heating the endless form operation, working medium is calcium chloride solution or lithium-bromide solution in the heat source tower subsystem, stop valve I 191 and stop valve III 193 are closed, stop valve II 192 and stop valve IV 194 are opened, stop valve V 201 and stop valve VII 203 are closed, and stop valve VI 202 and stop valve VIII 204 are opened.Concrete steps are as follows:
1, regeneration of waste liquor subsystem cyclic process:
1.1, under regeneration mode, regeneration of waste liquor subsystem maintenance work, weak solution flows out from the taphole in solution storage chamber, weak solution passage in control valve I 2, solution heat exchanger 3(solution heat exchanger 3) and after the choke valve I 4 in the inflow boiling type regenerator 5 (when weak solution during through control valve I 2, being negative pressure by control valve I 2 with pressure decreased);
1.2, the port I by boiling type regenerator 5 51 introduces the low-grade heat source that outside low-grade heat source supplying system is derived;
1.3, after weak solution absorbs the heat of low-grade heat source, the part moisture evaporation in the weak solution, weak solution is condensed into concentrated solution; The port II 52 by boiling type regenerator 5 again will have been absorbed the low-grade heat source behind the heat by weak solution and lead and get back in the outside low-grade heat source supplying system;
1.4, concentrated solution flows out from boiling type regenerator 5, and be forced into more than the normal pressure through solution booster pump I 6, and enter concentrated solution passage in the solution heat exchanger 3(solution heat exchanger 3) in; At this moment, the liquid heat exchange in concentrated solution passage and the weak solution passage, the heat that is about to concentrated solution in the concentrated solution passage is transmitted on the interior weak solution of weak solution passage;
1.5, from boiling type regenerator 5 evaporation water vapour flow to condenser 10, become condensed water after in condenser 10, emitting condensation latent heat and enter storage in the condensation water tank 11, condensate pump 12 is by the liquid level control of condensation water tank 10, when the condensed water of storage in the condensation water tank 10 is too much, with regard to open cold condensate pump 12 that the rear discharge of condensed water pressurization is extraneous.
2, heat source tower subsystem cyclic process:
2.1 concentrated solution sprays out from the spray thrower of heat source tower 1, when outdoor air passes through new wind passage, carries out the caloic exchange with concentrated solution, and the concentrated solution temperature is raise, and after the concentration thinning (namely having become weak solution), has fallen in the solution storage chamber;
2.2 weak solution flows out from the taphole in solution storage chamber, if be the general modfel operation this moment, then weak solution flows in the outdoor heat exchanger 7 by outdoor heat exchanger port III 73 by stop valve II 192 through control valve II 8 and circulating pump 9 again; If be the regeneration operational mode this moment, then weak solution is by the concentrated regeneration of regeneration subsystem, the passage of the concentrated solution of concentrated solution in the solution heat exchanger 3(solution heat exchanger 3) flows out in, flow in the outdoor heat exchangers 7 by outdoor heat exchanger port III 73 by stop valve II 192;
2.3, concentrated solution in outdoor heat exchanger 7, after the heat release of low-temp low-pressure refrigerant vapour, temperature reduces, and flows in the spray thrower through stop valve IV 194 by outdoor heat exchanger port IV 74 again, re-starts step 1 to the circulation of step 2.
3, the cyclic process of heat pump subsystem:
3.1, after the HTHP refrigerant vapour passes through four-way change-over valve port IV 144 and four-way change-over valve port III 143 successively from the exhaust outlet of compressor 15, flow in the indoor heat exchangers 16 by indoor heat exchanger port I 161 again;
3.2, the HTHP refrigerant vapour emits condensation heat and heats outside heating system backwater in indoor heat exchanger 16, become high temperature high pressure liquid;
3.3, high temperature high pressure liquid through indoor heat exchanger port II 162 by becoming low-temp low-pressure liquid after the choke valve II 13; (according to the character of cryogen, high temperature high pressure liquid is cooled to low-temp low-pressure liquid naturally in indoor heat exchanger port II 162 flows to the process of choke valve II 13, such effect will appear after the cold-producing medium throttling, be equivalent to step-down so that a small amount of refrigerant liquid evacuator body, the heat of evaporation can only be lowered the temperature to provide by cold-producing medium, so just make cold-producing medium become low-temp low-pressure liquid);
If 3.4 under general operational mode, by-passing valve 21 is opened, this moment, most low-temp low-pressure liquid flow to the taphole of condenser 10 by by-passing valve 21, only has a small amount of low-temp low-pressure liquid condenser 10 of flowing through, two strands of low-temp low-pressure liquid converge at the taphole of condenser 10, after outdoor heat exchanger port II 72 enters the concentrated solution sensible heat of outdoor heat exchanger 7 interior absorptions from heat source tower 1, vaporize, become low-temp low-pressure gas; If under the regeneration operational mode, by-passing valve 21 cuts out, then all low-temp low-pressure liquid enters condenser 10 through check valve II 17, absorb the latent heat that water vapour is emitted, part cryogen evaporation by outdoor heat exchanger port II 72 enter outdoor heat exchanger 7 interior absorptions from the concentrated solution sensible heat of heat source tower 1 after further vaporization, become low-temp low-pressure gas (low-temp low-pressure gas becomes high temperature and high pressure gas through behind the compressor).Low-temp low-pressure gas flows out from outdoor heat exchanger port I 71, then enters successively the air entry of compressor 15 by four-way change-over valve port I 141 and four-way change-over valve port II 142.
B, under refrigeration mode, heat pump subsystem, heat source tower subsystem all keep the operation, the regeneration of waste liquor subsystem is closed, the heat pump subsystem moves by the kind of refrigeration cycle mode, heat source tower 1 is pressed the cooling tower mode operation, working medium is water in the system.Control valve II 8 and circulating pump 9 are opened, and control valve I 2 is closed, and stop valve I 191 and stop valve III 193 are opened, and stop valve II 192 and stop valve IV 194 are closed, and stop valve V 201 and stop valve VII 203 are opened, and stop valve VI 202 and stop valve VIII 204 are closed.Concrete steps are as follows:
1, heat source tower subsystem cyclic process under the refrigeration mode:
1.1, water sprays out from the spray thrower of heat source tower 1, outdoor air carries out the caloic exchange with water during by new wind passage, and the temperature of water is reduced;
1.2, water flows out from the taphole in solution storage chamber, through control valve II 8 and circulating pump 9, again by after the stop valve III 193, flows into outdoor heat exchangers 7 through outdoor heat exchanger port IV 74;
1.3, water behind outdoor heat exchanger 7 interior absorption HTHP refrigerant vapour liberated heats, the temperature of water raises, and comes back in the heat source tower 1 to carry out the caloic exchange with air again.
2, the cyclic process of heat pump subsystem under the refrigeration mode:
2.1, the HTHP refrigerant vapour flows in the outdoor heat exchangers 7 by outdoor heat exchanger port I 71 through four-way change-over valve port IV 144 and four-way change-over valve port I 141 successively from compressor 15 exhaust outlets;
2.2, the HTHP refrigerant vapour becomes high temperature high pressure liquid emit condensation heat in outdoor heat exchanger 7 after, successively by becoming low-temp low-pressure liquid after check valve II 18, the choke valve II 13, enters indoor heat exchanger 16 by indoor heat exchanger port II 162 more again;
2.3, vaporize behind the sensible heat of the outside cold supply system cold-water return of low-temp low-pressure liquid absorption, (the gas here is the low-temp low-pressure gas that becomes after the heat absorption of low-temp low-pressure liquid to become low-temp low-pressure gas, it is exactly a phase transition process, temperature is substantially constant), then through indoor heat exchanger port I 161 successively by after four-way change-over valve port III 143 and the four-way change-over valve port II 142, enter in the compressor 15 from the air entry of compressor 15.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (4)
1. boiling regenerative heat source tower heat pump system; It is characterized in that: comprise heat pump subsystem, heat source tower subsystem and regeneration of waste liquor subsystem;
The regeneration of waste liquor subsystem comprises control valve I (2), solution heat exchanger (3), choke valve I (4), boiling type regenerator (5), solution pump (6), condenser (10), condensation water tank (11) and condensate pump (12);
The heat pump subsystem comprises outdoor heat exchanger (7), four-way change-over valve (14), compressor (15), indoor heat exchanger (16), choke valve II (13), condenser (10), check valve I (18), check valve II (17) and by-passing valve (21);
The heat source tower subsystem comprises heat source tower (1), control valve II (8), cooling water pump (9), outdoor heat exchanger (7) and outdoor conversion valve set (19);
Be disposed with from top to bottom spray thrower, new wind passage and solution storage chamber in the described heat source tower (1), described solution storage is provided with taphole in the chamber;
Be provided with concentrated solution passage and weak solution passage in the described solution heat exchanger (3), the two ends of described concentrated solution passage are respectively arranged with concentrated solution import and concentrated solution outlet, and the two ends of described weak solution passage are respectively arranged with dilute solution inlet and weak solution outlet;
The taphole in described solution storage chamber is divided into two-way, and one the tunnel is connected with control valve I (2), and one the tunnel is connected with control valve II (8);
Described control valve I (2) also is connected with the dilute solution inlet of solution heat exchanger (3), the weak solution outlet of solution heat exchanger (3) is connected with choke valve I (4), choke valve I (4) is connected with the dilute solution inlet of boiling type regenerator (5), the concentrated solution outlet of boiling type regenerator (5) is connected with solution pump (6), and solution pump (6) is connected with the concentrated solution import of solution heat exchanger (3); Described boiling type regenerator (5) is connected with outside low-grade heat source;
Described control valve II (8) also is connected with cooling water pump (9); Cooling water pump (9) is connected with the concentrated solution outlet of outdoor conversion valve set (19) and solution heat exchanger (3) respectively;
Described outdoor conversion valve set (19) is connected with concentrated solution outlet, spray thrower and the outdoor heat exchanger (7) of solution heat exchanger (3) respectively;
Described outdoor heat exchanger (7) is connected with four-way change-over valve (14);
Described four-way change-over valve (14) is connected with indoor heat exchanger port (16) with compressor (15) respectively;
Described indoor heat exchanger port (16) is connected with choke valve II (13); Described indoor heat exchanger port (16) also is connected with indoor conversion valve set (20);
Described choke valve II (13) is connected with the liquid outlet of check valve I (18) and the inlet of check valve II (17) respectively;
The liquid outlet of described check valve II (17) is connected with the solution inlet port of condenser (10);
The taphole of described condenser (10) is connected with inlet and the outdoor heat exchanger (7) of check valve I (18) respectively;
Described by-passing valve (21) is connected 10 with the inlet of check valve II (17) with condenser respectively) taphole be connected; Described heat pump subsystem is by outdoor heat exchanger (7) and the coupling of heat source tower subsystem, and described heat pump subsystem again
By condenser (10) and the coupling of regeneration of waste liquor subsystem.
2. boiling regenerative heat source tower heat pump according to claim 1 system; It is characterized in that: be provided with stop valve I (191), stop valve II (192), stop valve III (193), stop valve IV (194) in the described outdoor conversion valve set (19);
Described stop valve I (191), stop valve II (192), the rear formation series loop that is connected successively of stop valve III (193) and stop valve IV (194), the solution that is provided with outdoor conversion valve set (19) between stop valve II (192) and stop valve III (193) is imported and exported IV, the solution that is provided with outdoor conversion valve set (19) between stop valve I (191) and stop valve IV (194) is imported and exported I, the solution that is provided with outdoor conversion valve set (19) between stop valve I (191) and stop valve II (192) is imported and exported II, and the solution that is provided with outdoor conversion valve set (19) between stop valve III (193) and stop valve IV (194) is imported and exported III;
Be provided with stop valve I (201), stop valve II (202), stop valve III (203) and stop valve IV (204) in the described indoor conversion valve set (20);
Described stop valve I (201), stop valve II (202), the rear formation series loop that is connected successively of stop valve III (203) and stop valve IV (204), the solution that is provided with outdoor conversion valve set (20) between stop valve II (202) and stop valve III (203) is imported and exported III, the solution that is provided with outdoor conversion valve set (20) between stop valve I (201) and stop valve IV (204) is imported and exported II, the solution that is provided with outdoor conversion valve set (20) between stop valve I (201) and stop valve II (202) is imported and exported I, and the solution that is provided with outdoor conversion valve set (20) between stop valve III (203) and stop valve IV (204) is imported and exported IV;
Be provided with outdoor heat exchanger port I (71), outdoor heat exchanger port II (72), outdoor heat exchanger port III (73) and outdoor heat exchanger port IV (74) on the described outdoor heat exchanger (7);
Be provided with indoor heat exchanger port I (161), indoor heat exchanger port II (162), indoor heat exchanger port III (163) and indoor heat exchanger port IV (164) on the described indoor heat exchanger (16);
Be provided with four-way change-over valve port I (141), four-way change-over valve port II (142), four-way change-over valve port III (143) and four-way change-over valve port IV (144) on the described four-way change-over valve (14);
The solution of described outdoor conversion valve set (19) is imported and exported I and is connected with spray thrower, the solution of described outdoor conversion valve set (19) is imported and exported II and is connected with outdoor heat exchanger port III (73), the solution of outdoor conversion valve set (19) is imported and exported III and is connected with outdoor heat exchanger port IV (74), the solution of described outdoor conversion valve set (19) is imported and exported IV and is connected with the concentrated solution outlet of cooling water pump (9) and solution heat exchanger (3) respectively, outdoor heat exchanger port I (71) is connected with four-way change-over valve port I (141), the exhaust outlet of described compressor (15) is connected with four-way change-over valve port IV (144), the air entry of compressor (15) is connected with four-way change-over valve port II (142), four-way change-over valve port III (143) is connected with indoor heat exchanger port I (161), indoor heat exchanger port II (162) is connected with choke valve II (13), the inlet of check valve I (18) is connected with taphole and the outdoor heat exchanger port II (72) of condenser (10) respectively, indoor heat exchanger port III (163) is imported and exported II with the solution of outdoor conversion valve set (20) and is connected, indoor heat exchanger port IV (164) is imported and exported III with the solution of outdoor conversion valve set (20) and is connected, and the solution import and export IV that the solution of outdoor conversion valve set (20) is imported and exported I and outdoor conversion valve set (20) is connected with water inlet with the delivery port of low-grade heat source respectively.
3. boiling regenerative heat source tower heat pump according to claim 2 system; It is characterized in that: described low-grade heat source can be from surface water, underground water, buried pipe heat exchange system, solar water heating system or other waste heat source.
4. boiling regenerative heat source tower heat pump according to claim 3 system; It is characterized in that: the working medium in the heat source tower subsystem can adopt calcium chloride solution or lithium-bromide solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210376402.2A CN102853576B (en) | 2012-09-29 | 2012-09-29 | Boiling regeneration type heat pump system for heat source tower |
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| CN201210376402.2A CN102853576B (en) | 2012-09-29 | 2012-09-29 | Boiling regeneration type heat pump system for heat source tower |
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| CN109059142A (en) * | 2018-06-19 | 2018-12-21 | 浙江理工大学 | Heat source tower multi-online air-conditioning system device and method |
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| CN102853576B (en) | 2014-11-26 |
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