CN104457012B - A kind of absorption type refrigerating unit of recyclable steam sensible heat - Google Patents
A kind of absorption type refrigerating unit of recyclable steam sensible heat Download PDFInfo
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- CN104457012B CN104457012B CN201410723304.0A CN201410723304A CN104457012B CN 104457012 B CN104457012 B CN 104457012B CN 201410723304 A CN201410723304 A CN 201410723304A CN 104457012 B CN104457012 B CN 104457012B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/025—Liquid transfer means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/18—Optimization, e.g. high integration of refrigeration components
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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 invention discloses the absorption type refrigerating unit of a kind of recyclable steam sensible heat, the solution of absorber outlet is divided into two-way, lead up to and flow to generator through solution heat exchanger after being pressurizeed by solution pump, an other road then after being pressurizeed by solution pump, flow to steaming solution heat exchanger and steam carry out heat exchange after then flow into generator.Comparing with conventional suction formula refrigerating plant, vapor portion or the complete sensible heat of apparatus of the present invention generator exports are reclaimed by the solution flowing to steaming solution heat exchanger.Therefore, under conditions of generator occurs identical steam, the generation heat that apparatus of the present invention need is much smaller than conventional suction formula refrigerating plant, so that apparatus of the present invention have than the conventional suction higher efficiency of formula refrigerating plant.
Description
Technical field
The invention belongs to refrigeration technology field, refer more particularly to the absorption type refrigerating unit of a kind of recyclable steam sensible heat.
Background technology
Sorption type refrigerating technology is the Refrigeration Technique of a kind of heat-driven, and comparing its major advantage with compression-type refrigeration technology is to have only to consume little mechanical energy, it is possible to directly utilize heat energy as drive energy.In order to improve the market competitiveness of absorption type refrigerating unit, need to use advanced sorption type refrigerating technology to improve its utilization efficiency of heat energy.The efficiency improving absorption type refrigerating unit has an a variety of mode: develop new absorption working medium to, based on the new advanced Absorption Cooling System of basic absorption formula kind of refrigeration cycle exploitation.Document A review of absorption refrigeration technologies (Renewable and sustainable energy reviews.2001；5:343-372) advanced Absorption Cooling System technology is done preferable summary.The absorption type refrigerating unit being currently based on advanced Absorption Cooling System mainly improves its efficiency by the available latent heat such as heat, condensation heat and rectified heat that absorb of recovery.But, the general advanced Absorption Cooling System reclaiming the solidifying heat of absorption hot and cold needs the thermal source of higher temperature, uses the problem that the absorption type refrigerating unit of the working medium pair such as water-lithium bromide and ammonia-sodium rhodanate does not the most exist rectified heat.Therefore, heat source temperature is relatively low when, for the absorption type refrigerating unit without rectified heat, its performance is difficult to be improved by existing advanced Absorption Cooling System.
Summary of the invention
The present invention is based on tradition single-effective absorption refrigerating plant, for the absorption type refrigerating unit without rectified heat, a kind of absorption type refrigerating unit is proposed, its recyclable steam sensible heat, by reclaiming the sensible heat of the steam of generator exports, improve the performance of absorption type refrigerating unit further, make the present invention become the high-efficiency absorption refrigerating plant of recyclable steam sensible heat.
The present invention is achieved by the following technical solutions: the absorption type refrigerating unit of a kind of recyclable steam sensible heat, and it includes generator (1), condenser (3), vaporizer (5), absorber (6), solution heat exchanger (9)；Wherein: this absorption type refrigerating unit also includes steaming solution heat exchanger (2), the gaseous phase outlet of generator (1), the gas phase entrance of steaming solution heat exchanger (2), the gaseous phase outlet of steaming solution heat exchanger (2), condenser (3), vaporizer (5), the gas phase entrance of absorber (6), the dense refrigerant solution outlet of absorber (6), the dense refrigerant solution entrance of solution heat exchanger (9), the dense refrigerant solution outlet of solution heat exchanger (9), first solution inlet of generator (1) head and the tail successively connect and compose the first loop that energy flows to；The taphole of generator (1), dilute refrigerant solution entrance of solution heat exchanger (9), dilute refrigerant solution outlet of solution heat exchanger (9), the dense refrigerant solution outlet of the solution inlet of absorber (6), absorber (6), the second solution inlet head and the tail successively of the solution inlet of steaming solution heat exchanger (2), the taphole of steaming solution heat exchanger (2), generator (1) connect and compose the second servo loop that energy flows to；The dense refrigerant solution outlet of absorber (6) exports the solution inlet of the dilute refrigerant solution outlet to solution heat exchanger (9) of the dense refrigerant solution and steaming solution heat exchanger (2) by the way of pump pressure.
Further improvement as such scheme, this absorption type refrigerating unit also includes the first solution pump (7), and the dense refrigerant solution outlet of absorber (6) is connected to dilute refrigerant solution outlet of solution heat exchanger (9) and the solution inlet of steaming solution heat exchanger (2) by the first solution pump (7).Preferably, this absorption type refrigerating unit also includes that first flow regulation parts (8), first flow regulation parts (8) are connected between the first solution pump (7) and the dense refrigerant solution entrance of solution heat exchanger (9).More preferably, this absorption type refrigerating unit also includes that second flow regulation parts (11), second flow regulation parts (11) are connected between the first solution pump (7) and the solution inlet of steaming solution heat exchanger (2).
Further improvement as such scheme, this absorption type refrigerating unit also includes the first solution pump (7), the second solution pump (13), dilute refrigerant solution that the dense refrigerant solution outlet of absorber (6) is connected to solution heat exchanger (9) by the first solution pump (7) exports, and the dense refrigerant solution outlet of absorber (6) is connected to the solution inlet of steaming solution heat exchanger (2) also by the second solution pump (13).Preferably, this absorption type refrigerating unit also includes that first flow regulation parts (8), first flow regulation parts (8) are connected between the first solution pump (7) and the dense refrigerant solution entrance of solution heat exchanger (9).More preferably, this absorption type refrigerating unit also includes that second flow regulation parts (11), second flow regulation parts (11) are connected between the second solution pump (13) and the solution inlet of steaming solution heat exchanger (2).
Further improvement as such scheme, this absorption type refrigerating unit also includes solution mixer (12), two solution inlet of solution mixer (12) connect the taphole of steaming solution heat exchanger (2) and the dense refrigerant solution outlet of solution heat exchanger (9) respectively, and the mixed solution outlet of solution mixer (12) connects the first solution inlet of generator (1) or connects the second solution inlet of generator (1).
Further improvement as such scheme, this absorption type refrigerating unit also includes first throttle element (4), second section fluid element (10), first throttle element (4) is connected between condenser (3) and vaporizer (5), and second section fluid element (10) is connected between the outlet of dilute refrigerant solution and the solution inlet of absorber (6) of solution heat exchanger (9).
As the further improvement of such scheme, the solution in steaming solution heat exchanger (2) directly contacts with steam, and heat transfer and mass transfer occur simultaneously.
The Advantageous Effects of the present invention is embodied in: compare with conventional suction formula refrigerating plant, circulation process is optimized by apparatus of the present invention, many such as lower component according to optimum results: first flow regulation parts, second flow regulation parts and steaming solution heat exchanger.In apparatus of the present invention, absorber outlet solution pressurized after be divided into two parts, a part is the same with conventional suction formula refrigerating plant to be flowed directly in generator, then flowing in generator after the sensible heat that another part then flows to reclaim in steaming solution heat exchanger the refrigerant vapour of generator exports, flow-rate ratio between the two needs to be optimized by analysis.Owing to apparatus of the present invention can reclaim conventional suction formula device irretrievable steam sensible heat, therefore have than the conventional suction higher efficiency of formula refrigerating plant.
Accompanying drawing explanation
The structural representation of the absorption type refrigerating unit of the recyclable steam sensible heat that Fig. 1 provides for first embodiment of the invention；
The structural representation of the absorption type refrigerating unit of the recyclable steam sensible heat that Fig. 2 provides for second embodiment of the invention；
The structural representation of the absorption type refrigerating unit of the recyclable steam sensible heat that Fig. 3 provides for third embodiment of the invention；
The structural representation of the absorption type refrigerating unit of the recyclable steam sensible heat that Fig. 4 provides for four embodiment of the invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
First embodiment
Referring to Fig. 1, the structural representation of the absorption type refrigerating unit of its recyclable steam sensible heat provided for first embodiment of the invention, in Fig. 1, solid line represents liquid phase or gas-liquid two-phase fluid, and dotted line represents gaseous fluid.
This absorption type refrigerating unit includes that generator 1, steaming solution heat exchanger 2, condenser 3, vaporizer 5, absorber 6, solution heat exchanger the 9, first solution pump 7, first flow regulate parts 8, first throttle element 4, second section fluid element 10.
The gaseous phase outlet of generator 1, the gas phase entrance of steaming solution heat exchanger 2, the gaseous phase outlet of steaming solution heat exchanger 2, condenser 3, vaporizer 5, the gas phase entrance of absorber 6, the dense refrigerant solution outlet of absorber 6, the dense refrigerant solution outlet of the dense refrigerant solution entrance of solution heat exchanger 9, solution heat exchanger 9, the first solution inlet head and the tail successively of generator 1 connect and compose the first loop that energy flows to.The taphole of generator 1, dilute refrigerant solution entrance of solution heat exchanger 9, dilute refrigerant solution outlet of solution heat exchanger 9, the dense refrigerant solution outlet of the solution inlet of absorber 6, absorber 6, the second solution inlet head and the tail successively of the solution inlet of steaming solution heat exchanger 2, the taphole of steaming solution heat exchanger 2, generator 1 connect and compose the second servo loop that energy flows to.
The dense refrigerant solution outlet of absorber 6 exports the solution inlet of the dilute refrigerant solution outlet to solution heat exchanger 9 of the dense refrigerant solution and steaming solution heat exchanger 2 by the way of pump pressure.In the present embodiment, the dense refrigerant solution outlet of absorber 6 is connected to dilute refrigerant solution outlet of solution heat exchanger 9 and the solution inlet of steaming solution heat exchanger 2 by the first solution pump 7, it is achieved the dense refrigerant solution outlet of absorber 6 exports by the way of pump pressure.
Regulate flow, throttling etc. for convenience, between the first solution pump 7 and the dense refrigerant solution entrance of solution heat exchanger 9, be connected first flow regulation parts 8, between the first solution pump 7 and the solution inlet of steaming solution heat exchanger 2, be connected second flow regulation parts 11；It is connected first throttle element 4 between condenser 3 with vaporizer 5, between the outlet of dilute refrigerant solution and the solution inlet of absorber 6 of solution heat exchanger 9, is connected second section fluid element 10.
Condenser 3 and absorber 6, with extraneous cooling medium cooling, are used for cooling down condenser 3 and the cooling medium of absorber 6, can be cooling water, it is also possible to be air.First flow regulation parts 8 second flow regulation parts 11 can be the valve that diaphragm valve, needle-valve, stop valve, ball valve, flow-limiting valve etc. have Flow-rate adjustment, it is also possible to be aperture, elbow, different cross section of fluid channel and length pipeline etc. other can regulate the parts of flow.First throttle element 4 and second section fluid element 10 can be the valves that needle-valve etc. has throttling action, it is also possible to be the miscellaneous part with throttling action such as capillary tube, throttle orifice.The flow of the outlet solution of the first solution pump 7 can be regulated by first flow regulation parts 8 second flow regulation 11 two external components of parts respectively, it is also possible to by the control realization internal regulation to running frequency.Apparatus of the present invention may also used to improve conventional multi-level, tradition multiple-effect and the efficiency of composite adsorption type refrigerating plant.
Comparing with conventional suction formula refrigerating plant, circulation process is optimized by apparatus of the present invention, have employed steaming solution heat exchanger 2.In apparatus of the present invention, come from the solution of absorber 6 pressurized after be divided into two parts, a part is the same with conventional suction formula refrigerating plant to be flowed directly in generator 1, another part then flows to then flow in generator 1 after the sensible heat of the refrigerant vapour of recovery generator 1 outlet in steaming solution heat exchanger 2, and flow-rate ratio between the two needs to be optimized by analysis.Owing to apparatus of the present invention can reclaim conventional suction formula device irretrievable steam sensible heat, therefore have than the conventional suction higher efficiency of formula refrigerating plant.
Second embodiment
Referring to Fig. 2, the structural representation of the absorption type refrigerating unit of its recyclable steam sensible heat provided for second embodiment of the invention, in Fig. 2, solid line represents liquid phase or gas-liquid two-phase fluid, and dotted line represents gaseous fluid.
This absorption type refrigerating unit includes that generator 1, steaming solution heat exchanger 2, condenser 3, vaporizer 5, absorber 6, solution heat exchanger the 9, first solution pump 7, first flow regulate parts 8, first throttle element 4, second section fluid element 10, solution mixer 12.
The gaseous phase outlet of generator 1, the gas phase entrance of steaming solution heat exchanger 2, the gaseous phase outlet of steaming solution heat exchanger 2, condenser 3, vaporizer 5, the gas phase entrance of absorber 6, the dense refrigerant solution outlet of absorber 6, the dense refrigerant solution outlet of the dense refrigerant solution entrance of solution heat exchanger 9, solution heat exchanger 9, the first solution inlet head and the tail successively of generator 1 connect and compose the first loop that energy flows to.The taphole of generator 1, dilute refrigerant solution entrance of solution heat exchanger 9, dilute refrigerant solution outlet of solution heat exchanger 9, the dense refrigerant solution outlet of the solution inlet of absorber 6, absorber 6, the second solution inlet head and the tail successively of the solution inlet of steaming solution heat exchanger 2, the taphole of steaming solution heat exchanger 2, generator 1 connect and compose the second servo loop that energy flows to.
Wherein, two solution inlet of solution mixer 12 connect the taphole of steaming solution heat exchanger 2 and the dense refrigerant solution outlet of solution heat exchanger 9 respectively, and the mixed solution outlet of solution mixer 12 connects the first solution inlet of generator 1 or connects the second solution inlet of generator 1.That is, on the basis of shown in Fig. 1, the solution of dense refrigerant solution outlet and 12 two solution inlet of outlet solution and solution mixer of steaming solution heat exchanger 2 of solution heat exchanger 9 are connected respectively, and the mixed solution outlet of solution mixer 12 is connected with one of them solution inlet of generator 1.
The dense refrigerant solution outlet of absorber 6 exports the solution inlet of the dilute refrigerant solution outlet to solution heat exchanger 9 of the dense refrigerant solution and steaming solution heat exchanger 2 by the way of pump pressure.In the present embodiment, the dense refrigerant solution outlet of absorber 6 is connected to dilute refrigerant solution outlet of solution heat exchanger 9 and the solution inlet of steaming solution heat exchanger 2 by the first solution pump 7, it is achieved the dense refrigerant solution outlet of absorber 6 exports by the way of pump pressure.
Regulate flow, throttling etc. for convenience, between the first solution pump 7 and the dense refrigerant solution entrance of solution heat exchanger 9, be connected first flow regulation parts 8, between the first solution pump 7 and the solution inlet of steaming solution heat exchanger 2, be connected second flow regulation parts 11；It is connected first throttle element 4 between condenser 3 with vaporizer 5, between the outlet of dilute refrigerant solution and the solution inlet of absorber 6 of solution heat exchanger 9, is connected second section fluid element 10.
Condenser 3 and absorber 6, with extraneous cooling medium cooling, are used for cooling down condenser 3 and the cooling medium of absorber 6, can be cooling water, it is also possible to be air.First flow regulation parts 8 second flow regulation parts 11 can be the valve that diaphragm valve, needle-valve, stop valve, ball valve, flow-limiting valve etc. have Flow-rate adjustment, it is also possible to be aperture, elbow, different cross section of fluid channel and length pipeline etc. other can regulate the parts of flow.First throttle element 4 and second section fluid element 10 can be the valves that needle-valve etc. has throttling action, it is also possible to be the miscellaneous part with throttling action such as capillary tube, throttle orifice.The flow of the outlet solution of the first solution pump 7 can be regulated by first flow regulation parts 8 second flow regulation 11 two external components of parts respectively, it is also possible to by the control realization internal regulation to running frequency.Apparatus of the present invention may also used to improve conventional multi-level, tradition multiple-effect and the efficiency of composite adsorption type refrigerating plant.
Comparing with conventional suction formula refrigerating plant, circulation process is optimized by apparatus of the present invention, have employed steaming solution heat exchanger 2.In apparatus of the present invention, come from the solution of absorber 6 pressurized after be divided into two parts, a part is the same with conventional suction formula refrigerating plant to be flowed directly in generator 1, another part then flows to then flow in generator 1 after the sensible heat of the refrigerant vapour of recovery generator 1 outlet in steaming solution heat exchanger 2, and flow-rate ratio between the two needs to be optimized by analysis.Owing to apparatus of the present invention can reclaim conventional suction formula device irretrievable steam sensible heat, therefore have than the conventional suction higher efficiency of formula refrigerating plant.
3rd embodiment
Referring to Fig. 3, the structural representation of the absorption type refrigerating unit of its recyclable steam sensible heat provided for third embodiment of the invention, in Fig. 3, solid line represents liquid phase or gas-liquid two-phase fluid, and dotted line represents gaseous fluid.
This absorption type refrigerating unit includes that generator 1, steaming solution heat exchanger 2, condenser 3, vaporizer 5, absorber 6, solution heat exchanger the 9, first solution pump 7, first flow regulate parts 8, first throttle element 4, second section fluid element 10, solution mixer the 12, second solution pump 13.
The gaseous phase outlet of generator 1, the gas phase entrance of steaming solution heat exchanger 2, the gaseous phase outlet of steaming solution heat exchanger 2, condenser 3, vaporizer 5, the gas phase entrance of absorber 6, the dense refrigerant solution outlet of absorber 6, the dense refrigerant solution outlet of the dense refrigerant solution entrance of solution heat exchanger 9, solution heat exchanger 9, the first solution inlet head and the tail successively of generator 1 connect and compose the first loop that energy flows to.The taphole of generator 1, dilute refrigerant solution entrance of solution heat exchanger 9, dilute refrigerant solution outlet of solution heat exchanger 9, the dense refrigerant solution outlet of the solution inlet of absorber 6, absorber 6, the second solution inlet head and the tail successively of the solution inlet of steaming solution heat exchanger 2, the taphole of steaming solution heat exchanger 2, generator 1 connect and compose the second servo loop that energy flows to.
Wherein, two solution inlet of solution mixer 12 connect the taphole of steaming solution heat exchanger 2 and the dense refrigerant solution outlet of solution heat exchanger 9 respectively, and the mixed solution outlet of solution mixer 12 connects the first solution inlet of generator 1 or connects the second solution inlet of generator 1.That is, on the basis of shown in Fig. 1, the solution of dense refrigerant solution outlet and 12 two solution inlet of outlet solution and solution mixer of steaming solution heat exchanger 2 of solution heat exchanger 9 are connected respectively, and the mixed solution outlet of solution mixer 12 is connected with one of them solution inlet of generator 1.
The dense refrigerant solution outlet of absorber 6 exports the solution inlet of the dilute refrigerant solution outlet to solution heat exchanger 9 of the dense refrigerant solution and steaming solution heat exchanger 2 by the way of pump pressure.In the present embodiment, dilute refrigerant solution that the dense refrigerant solution outlet of absorber 6 is connected to solution heat exchanger 9 by the first solution pump 7 exports, the dense refrigerant solution outlet of absorber 6 is connected to the solution inlet of steaming solution heat exchanger 2 also by the second solution pump 13, it is achieved the dense refrigerant solution outlet of absorber 6 exports by the way of pump pressure.That is, on the basis of shown in Fig. 2, first taphole of absorber 6 is connected by the entrance of the first solution pump 7 with first flow regulation parts 8, and the first taphole of absorber 6 is connected also by the entrance of the second solution pump 13 with second flow regulation parts 11.
Regulate flow, throttling etc. for convenience, between the first solution pump 7 and the dense refrigerant solution entrance of solution heat exchanger 9, be connected first flow regulation parts 8, between the first solution pump 7 and the solution inlet of steaming solution heat exchanger 2, be connected second flow regulation parts 11；It is connected first throttle element 4 between condenser 3 with vaporizer 5, between the outlet of dilute refrigerant solution and the solution inlet of absorber 6 of solution heat exchanger 9, is connected second section fluid element 10.
Condenser 3 and absorber 6, with extraneous cooling medium cooling, are used for cooling down condenser 3 and the cooling medium of absorber 6, can be cooling water, it is also possible to be air.First flow regulation parts 8 second flow regulation parts 11 can be the valve that diaphragm valve, needle-valve, stop valve, ball valve, flow-limiting valve etc. have Flow-rate adjustment, it is also possible to be aperture, elbow, different cross section of fluid channel and length pipeline etc. other can regulate the parts of flow.First throttle element 4 and second section fluid element 10 can be the valves that needle-valve etc. has throttling action, it is also possible to be the miscellaneous part with throttling action such as capillary tube, throttle orifice.The flow of the outlet solution of the first solution pump 7 can be regulated by first flow regulation parts 8 second flow regulation 11 two external components of parts respectively, it is also possible to by the control realization internal regulation to running frequency.Apparatus of the present invention may also used to improve conventional multi-level, tradition multiple-effect and the efficiency of composite adsorption type refrigerating plant.
Comparing with conventional suction formula refrigerating plant, circulation process is optimized by apparatus of the present invention, have employed steaming solution heat exchanger 2.In apparatus of the present invention, come from the solution of absorber 6 pressurized after be divided into two parts, a part is the same with conventional suction formula refrigerating plant to be flowed directly in generator 1, another part then flows to then flow in generator 1 after the sensible heat of the refrigerant vapour of recovery generator 1 outlet in steaming solution heat exchanger 2, and flow-rate ratio between the two needs to be optimized by analysis.Owing to apparatus of the present invention can reclaim conventional suction formula device irretrievable steam sensible heat, therefore have than the conventional suction higher efficiency of formula refrigerating plant.
4th embodiment
Referring to Fig. 4, the structural representation of the absorption type refrigerating unit of its recyclable steam sensible heat provided for four embodiment of the invention, in Fig. 4, solid line represents liquid phase or gas-liquid two-phase fluid, and dotted line represents gaseous fluid.
This absorption type refrigerating unit includes that generator 1, steaming solution heat exchanger 2, condenser 3, vaporizer 5, absorber 6, solution heat exchanger the 9, first solution pump 7, first flow regulate parts 8, first throttle element 4, second section fluid element 10, solution mixer the 12, second solution pump 13.
The gaseous phase outlet of generator 1, the gas phase entrance of steaming solution heat exchanger 2, the gaseous phase outlet of steaming solution heat exchanger 2, condenser 3, vaporizer 5, the gas phase entrance of absorber 6, the dense refrigerant solution outlet of absorber 6, the dense refrigerant solution outlet of the dense refrigerant solution entrance of solution heat exchanger 9, solution heat exchanger 9, the first solution inlet head and the tail successively of generator 1 connect and compose the first loop that energy flows to.The taphole of generator 1, dilute refrigerant solution entrance of solution heat exchanger 9, dilute refrigerant solution outlet of solution heat exchanger 9, the dense refrigerant solution outlet of the solution inlet of absorber 6, absorber 6, the second solution inlet head and the tail successively of the solution inlet of steaming solution heat exchanger 2, the taphole of steaming solution heat exchanger 2, generator 1 connect and compose the second servo loop that energy flows to.
Wherein, two solution inlet of solution mixer 12 connect the taphole of steaming solution heat exchanger 2 and the dense refrigerant solution outlet of solution heat exchanger 9 respectively, and the mixed solution outlet of solution mixer 12 connects the first solution inlet of generator 1 or connects the second solution inlet of generator 1.That is, on the basis of shown in Fig. 1, the solution of dense refrigerant solution outlet and 12 two solution inlet of outlet solution and solution mixer of steaming solution heat exchanger 2 of solution heat exchanger 9 are connected respectively, and the mixed solution outlet of solution mixer 12 is connected with one of them solution inlet of generator 1.
The dense refrigerant solution outlet of absorber 6 exports the solution inlet of the dilute refrigerant solution outlet to solution heat exchanger 9 of the dense refrigerant solution and steaming solution heat exchanger 2 by the way of pump pressure.In the present embodiment, dilute refrigerant solution that the dense refrigerant solution outlet of absorber 6 is connected to solution heat exchanger 9 by the first solution pump 7 exports, the dense refrigerant solution outlet of absorber 6 is connected to the solution inlet of steaming solution heat exchanger 2 also by the second solution pump 13, it is achieved the dense refrigerant solution outlet of absorber 6 exports by the way of pump pressure.That is, on the basis of shown in Fig. 2, first taphole of absorber 6 is connected by the entrance of the first solution pump 7 with first flow regulation parts 8, and the first taphole of absorber 6 is connected also by the entrance of the second solution pump 13 with second flow regulation parts 11.
Regulate flow, throttling etc. for convenience, between the first solution pump 7 and the dense refrigerant solution entrance of solution heat exchanger 9, be connected first flow regulation parts 8, between the first solution pump 7 and the solution inlet of steaming solution heat exchanger 2, be connected second flow regulation parts 11；It is connected first throttle element 4 between condenser 3 with vaporizer 5, between the outlet of dilute refrigerant solution and the solution inlet of absorber 6 of solution heat exchanger 9, is connected second section fluid element 10.
Condenser 3 and absorber 6, with extraneous cooling medium cooling, are used for cooling down condenser 3 and the cooling medium of absorber 6, can be cooling water, it is also possible to be air.First flow regulation parts 8 second flow regulation parts 11 can be the valve that diaphragm valve, needle-valve, stop valve, ball valve, flow-limiting valve etc. have Flow-rate adjustment, it is also possible to be aperture, elbow, different cross section of fluid channel and length pipeline etc. other can regulate the parts of flow.First throttle element 4 and second section fluid element 10 can be the valves that needle-valve etc. has throttling action, it is also possible to be the miscellaneous part with throttling action such as capillary tube, throttle orifice.The flow of the outlet solution of the first solution pump 7 can be regulated by first flow regulation parts 8 second flow regulation 11 two external components of parts respectively, it is also possible to by the control realization internal regulation to running frequency.Apparatus of the present invention may also used to improve conventional multi-level, tradition multiple-effect and the efficiency of composite adsorption type refrigerating plant.
Present embodiment is on the basis of shown in Fig. 3, and the solution in steaming solution heat exchanger 2 directly contacts with steam, and heat transfer and mass transfer occur simultaneously.
Comparing with conventional suction formula refrigerating plant, circulation process is optimized by apparatus of the present invention, have employed steaming solution heat exchanger 2.In apparatus of the present invention, come from the solution of absorber 6 pressurized after be divided into two parts, a part is the same with conventional suction formula refrigerating plant to be flowed directly in generator 1, another part then flows to then flow in generator 1 after the sensible heat of the refrigerant vapour of recovery generator 1 outlet in steaming solution heat exchanger 2, and flow-rate ratio between the two needs to be optimized by analysis.Owing to apparatus of the present invention can reclaim conventional suction formula device irretrievable steam sensible heat, therefore have than the conventional suction higher efficiency of formula refrigerating plant.
Using ammonia-sodium rhodanate as working medium pair, it is simulated calculating to the performance of Fig. 4 shown device of the present invention, tradition single-effective absorption refrigerating plant.The assumed condition calculated is as follows: (1) system is in steady-working state；(2) pressure-drop in pipeline and leakage heat are ignored；(3) generator 1 import solution, generator 1 outlet solution, cooling medium cooling absorber outlet solution are saturated solution；(4) solution heat exchanger 9 cold end heat transfer temperature difference is 10 DEG C；(6) condenser 3 exports liquid is saturated liquid, and vaporizer 5 outlet is saturated vapor；(7) condensation temperature is 30 DEG C, and cooling medium cooling absorber 6 outlet solution is 30 DEG C；The adiabatic efficiency of (8) two solution pumps is 0.75.
The coefficient of performance under table one apparatus of the present invention, tradition single-effective absorption refrigerating plant difference evaporating temperature
| Operating mode | Te(℃) | COPSin | COPnew | η (%) |
| Operating mode 1 | -25 | 0 | 0 | 0 |
| Operating mode 2 | -22.5 | 0.2228 | 0.2285 | 2.55 |
| Operating mode 3 | -20 | 0.4360 | 0.4658 | 6.82 |
| Operating mode 4 | -17.5 | 0.5158 | 0.5578 | 8.15 |
| Operating mode 5 | -15 | 0.5632 | 0.6135 | 8.93 |
| Operating mode 6 | -12.5 | 0.5943 | 0.6504 | 9.44 |
| Operating mode 7 | -10 | 0.6180 | 0.6788 | 9.83 |
| Operating mode 8 | -7.5 | 0.6365 | 0.7009 | 10.12 |
| Operating mode 9 | -5 | 0.6524 | 0.7200 | 10.37 |
| Operating mode 10 | -2.5 | 0.6664 | 0.7369 | 10.58 |
| Operating mode 11 | 0 | 0.6787 | 0.7518 | 10.77 |
| Operating mode 12 | 2.5 | 0.6901 | 0.7656 | 10.94 |
| Operating mode 13 | 5 | 0.7012 | 0.7791 | 11.11 |
| Operating mode 14 | 7.5 | 0.7115 | 0.7917 | 11.27 |
| Operating mode 15 | 10 | 0.7217 | 0.8042 | 11.42 |
Table one is apparatus of the present invention, the contrast of the tradition single-action formula refrigerating plant coefficient of performance under different evaporating temperatures when occurrence temperature is 100 DEG C, and in table, Te refers to evaporating temperature, COPSinIt is the coefficient of performance of tradition single-action formula refrigerating plant, COPnewReferring to the coefficient of performance of apparatus of the present invention, η refers to the apparatus of the present invention coefficient of performance under corresponding operating mode and compares the relative increase rate of the conventional suction formula refrigerating plant coefficient of performance.As can be seen from Table I due to apparatus of the present invention can the sensible heat of recovery section generator exports steam, thus have than traditional higher efficiency of single-effective absorption refrigerating plant.When evaporating temperature is higher than-7.5 DEG C when, the coefficient of performance of the coefficient of performance more traditional single-effective absorption refrigerating plant of apparatus of the present invention is high by more than 10%.
Table two apparatus of the present invention and the coefficient of performance under the tradition different occurrence temperature of single-effective absorption refrigerating plant
| Operating mode | Tg(℃) | COPSin | COPnew | η (%) |
| Operating mode 1 | 72.5 | 0 | 0 | 0 |
| Operating mode 2 | 75 | 0.38886 | 0.40244 | 3.49 |
| Operating mode 3 | 77.5 | 0.50889 | 0.53406 | 4.95 |
| Operating mode 4 | 80 | 0.56479 | 0.59803 | 5.88 |
| Operating mode 5 | 82.5 | 0.5978 | 0.6375 | 6.64 |
| Operating mode 6 | 85 | 0.6172 | 0.6621 | 7.28 |
| Operating mode 7 | 87.5 | 0.6314 | 0.6811 | 7.88 |
| Operating mode 8 | 90 | 0.6393 | 0.6930 | 8.41 |
| Operating mode 9 | 92.5 | 0.6453 | 0.7030 | 8.93 |
| Operating mode 10 | 95 | 0.6489 | 0.7100 | 9.42 |
| Operating mode 11 | 97.5 | 0.6511 | 0.7156 | 9.90 |
| Operating mode 12 | 100 | 0.6524 | 0.7200 | 10.37 |
| Operating mode 13 | 102.5 | 0.6526 | 0.7232 | 10.82 |
| Operating mode 14 | 105 | 0.6523 | 0.7258 | 11.27 |
| Operating mode 15 | 107.5 | 0.6515 | 0.7278 | 11.71 |
| Operating mode 16 | 110 | 0.6504 | 0.7294 | 12.14 |
| Operating mode 17 | 112.5 | 0.6490 | 0.7305 | 12.57 |
| Operating mode 18 | 115 | 0.6473 | 0.7314 | 12.99 |
Table two is apparatus of the present invention and the contrast of the tradition single-effective absorption refrigerating plant coefficient of performance under different occurrence temperatures when evaporating temperature is-5 DEG C.T in tablegRefer to occurrence temperature, the same meaning of each symbol in the meaning of other symbols and table one.As can be seen from Table II under all simulated conditions, the coefficient of performance of apparatus of the present invention coefficient of performance the most traditional single-effective absorption refrigerating plant wants height, when occurrence temperature reaches 80 DEG C when, and the coefficient of performance of the coefficient of performance more traditional single-effective absorption refrigerating plant of apparatus of the present invention is high by more than 5%, when occurrence temperature reaches 100 DEG C when, and the coefficient of performance of the coefficient of performance more traditional single-effective absorption refrigerating plant of apparatus of the present invention is high by more than 10%.The reason that the coefficient of performance of the coefficient of performance more traditional single-effective absorption refrigerating plant of apparatus of the present invention is high is the sensible heat of apparatus of the present invention energy recovery section generator 1 outlet vapor.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (10)
1. an absorption type refrigerating unit for recyclable steam sensible heat, it include generator (1), condenser (3),
Vaporizer (5), absorber (6), solution heat exchanger (9)；It is characterized in that: this absorption type refrigerating unit
Also include steaming solution heat exchanger (2), the gaseous phase outlet of generator (1), steaming solution heat exchanger (2)
Gas phase entrance, the gaseous phase outlet of steaming solution heat exchanger (2), condenser (3), vaporizer (5),
The gas phase entrance of absorber (6), the dense refrigerant solution outlet of absorber (6), solution heat exchanger (9)
Dense refrigerant solution entrance, the dense refrigerant solution outlet of solution heat exchanger (9), generator (1)
First solution inlet head and the tail successively connect and compose the first loop that energy flows to；The taphole of generator (1),
Dilute refrigerant solution entrance of solution heat exchanger (9), solution heat exchanger (9) dilute refrigerant solution outlet,
The solution inlet of absorber (6), the dense refrigerant solution outlet of absorber (6), steaming solution heat exchange
The solution inlet of device (2), the taphole of steaming solution heat exchanger (2), the second of generator (1)
Solution inlet head and the tail successively connect and compose the second servo loop that energy flows to；The dense refrigerant solution of absorber (6)
Export by pump pressure by the way of export dense refrigerant solution to solution heat exchanger (9) dilute refrigerant solution export
Solution inlet with steaming solution heat exchanger (2).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 1, it is characterised in that: this suction
Receipts formula refrigerating plant also includes the first solution pump (7), and the outlet of the dense refrigerant solution of absorber (6) is by the
One solution pump (7) is connected to the outlet of dilute refrigerant solution and the steaming solution heat exchange of solution heat exchanger (9)
The solution inlet of device (2).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 2, it is characterised in that: this suction
Receipts formula refrigerating plant also includes that first flow regulation parts (8), first flow regulation parts (8) are connected to the
Between one solution pump (7) and the dense refrigerant solution entrance of solution heat exchanger (9).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 3, it is characterised in that: this suction
Receipts formula refrigerating plant also includes that second flow regulation parts (11), second flow regulation parts (11) are connected to
Between first solution pump (7) and the solution inlet of steaming solution heat exchanger (2).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 1, it is characterised in that: this suction
Receipts formula refrigerating plant also includes the first solution pump (7), the second solution pump (13), the dense system of absorber (6)
Dilute refrigerant solution that cryogen taphole is connected to solution heat exchanger (9) by the first solution pump (7) goes out
Mouthful, the dense refrigerant solution outlet of absorber (6) is connected to steaming solution also by the second solution pump (13)
The solution inlet of heat exchanger (2).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 5, it is characterised in that: this suction
Receipts formula refrigerating plant also includes that first flow regulation parts (8), first flow regulation parts (8) are connected to the
Between one solution pump (7) and the dense refrigerant solution entrance of solution heat exchanger (9).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 6, it is characterised in that: this suction
Receipts formula refrigerating plant also includes that second flow regulation parts (11), second flow regulation parts (11) are connected to
Between second solution pump (13) and the solution inlet of steaming solution heat exchanger (2).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 1, it is characterised in that: this suction
Receipts formula refrigerating plant also includes solution mixer (12), and two solution inlet of solution mixer (12) are respectively
The dense refrigerant solution of the taphole and solution heat exchanger (9) that connect steaming solution heat exchanger (2) goes out
Mouthful, the mixed solution outlet of solution mixer (12) connects the first solution inlet or the connection of generator (1)
Second solution inlet of generator (1).
The absorption type refrigerating unit of recyclable steam sensible heat the most as claimed in claim 1, it is characterised in that: this suction
Receipts formula refrigerating plant also includes first throttle element (4), second section fluid element (10), first throttle element (4)
Being connected between condenser (3) and vaporizer (5), second section fluid element (10) is connected to solution heat exchange
Between the outlet of dilute refrigerant solution and the solution inlet of absorber (6) of device (9).
The absorption type refrigerating unit of recyclable steam sensible heat the most as in one of claimed in any of claims 1 to 9,
It is characterized in that: the solution in steaming solution heat exchanger (2) directly contacts with steam, occurs simultaneously
Heat transfer and mass transfer.
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| CN201410723304.0A CN104457012B (en) | 2014-12-03 | 2014-12-03 | A kind of absorption type refrigerating unit of recyclable steam sensible heat |
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| US6718792B1 (en) * | 2000-01-05 | 2004-04-13 | Rocky Research | Integrated aqua-ammonia chiller/heater |
| CN1188641C (en) * | 2001-12-17 | 2005-02-09 | 清华大学 | Direct burning adsorption type cold and warm water machine set |
| ITMI20090729A1 (en) * | 2009-04-29 | 2010-10-30 | Marco Guerra | ABSORPTION HEAT PUMP WITH BURNER POWER MODULATION |
| CN103542590B (en) * | 2012-07-17 | 2015-10-28 | 中国科学院工程热物理研究所 | Ammonia absorption type refrigeration system and concentration active control method thereof |
| CN102997483B (en) * | 2012-12-27 | 2014-08-20 | 双良节能系统股份有限公司 | Direct-burning lithium bromide absorbing cold hot water unit capable of recycling smoke waste heat |
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