CN105402959A - Forced convective circulating flooded evaporator refrigerating system driven by recovered throttling loss - Google Patents
Forced convective circulating flooded evaporator refrigerating system driven by recovered throttling loss Download PDFInfo
- Publication number
- CN105402959A CN105402959A CN201510969523.1A CN201510969523A CN105402959A CN 105402959 A CN105402959 A CN 105402959A CN 201510969523 A CN201510969523 A CN 201510969523A CN 105402959 A CN105402959 A CN 105402959A
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- China
- Prior art keywords
- flooded evaporator
- gas
- injector
- pipeline
- liquid
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Classifications
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a forced convective circulating flooded evaporator refrigerating system driven by recovered throttling loss, belonging to the technical field of energy technologies and refrigeration technologies. The forced convective circulating flooded evaporator refrigerating system is characterized in that the a refrigerant liquid from a gas-liquid separator and part of refrigerant liquid from a flooded evaporator are ejected in an ejector by a refrigerant discharged from a condenser. The forced convective circulating flooded evaporator refrigerating system has the beneficial effects that the aims of increasing the heat exchange efficiency of the evaporator, increasing the refrigerating capacity within the unit time and reducing the power consumption of a compressor are achieved on the basis that the mass flow rate of an inlet of the evaporator is increased, and meanwhile, a unit is more compact.
Description
Technical field
The invention belongs to energy technology and refrigeration technology field, the forced convertion circulation flooded evaporator refrigeration system that the recovery restriction loss especially drastically increasing flooded evaporator heat exchange efficiency drives.
Background technology
At present, known refrigeration system mainly contains the refrigeration systems such as lithium bromide absorbing type refrigeration, air cooling, steam compression type refrigeration and single-stage ejector refrigeration.These systems are widely used in daily productive life, but all there is certain drawback with not enough.Refrigeration system with lithium bromide absorption can be applied to waste heat recovery, realizes energy-conservation object; But lithium-bromide solution existing corrosiveness when there being air to exist to pipeline, needing regularly to carry out vacuum maintenance to system, and cleaning cooling water and chilled water pipeline, in case pipe blocking in good time.Air cooling at a lower temperature coefficient of refrigerating performance is higher; But turbo-expander requires higher to air oxygen detrition degree, and the noise of turbine set is larger.Steam compression type refrigeration is higher than in the scope of-50 DEG C, and the comparatively large and facility compact of the refrigerating capacity of unit power consumption amount, takes up room little; But the refrigerating capacity that unit power consumption amount produces when lower temperature is less, and operation and maintenance cost is higher.
In injection refrigerating system, injector serves and drives pressure in evaporimeter to reduce, and then the effect that cold-producing medium is evaporated, namely working steam forms high-velocity fluid via the nozzle in injector, entrainment and take away the fluid on nozzle side, form vacuum at the ejecting port place of injector, the refrigerant vapour then in injection evaporimeter mixes with it, causes the environment under low pressure of evaporimeter.Cold-producing medium in evaporimeter is continuous explosive evaporation under lower pressure, absorption refrigerating hydro-thermal amount, thus realizes refrigeration.And mixed vapour enters heat release in condenser, be condensed into liquid.A fluid liquid part to reduce pressure laggard people's evaporimeter through expansion valve; Another part fluid, by after liquid pump supercharging, enters generator heat exchange and produces working steam, thus enters and circulate next time.
Today, energy scarcity and environmental pollution become the whole world must in the face of and the significant problem that solves.Economize energy, improves energy utilization rate, and protection of the environment, realizes the theme that sustainable development becomes current era.Injection refrigerating system compact conformation, takes up room little, can utilize the low-temperature heat sources such as the production waste heat of solar energy or factory; But the defect that coefficient of refrigerating performance is on the low side and economy is poor limits its further genralrlization and development.
Summary of the invention
The invention provides a kind of forced convertion circulation flooded evaporator refrigeration system reclaiming restriction loss and drive, this system is by part not boiling refrigerant liquid in extra injection flooded evaporator, improve flooded evaporator heat exchange efficiency, decrease compressor wasted work while increasing unit interval refrigerating capacity, save electric energy.
Technical scheme of the present invention:
The forced convertion circulation flooded evaporator refrigeration system reclaiming restriction loss driving comprises gas-liquid separator 1, flooded evaporator 2, compressor 3, condenser 4, injector 5, first magnetic valve 6, second magnetic valve 7.In the present invention, the primary outlet of flooded evaporator 2 is connected by the entrance of pipeline with gas-liquid separator 1, the gas vent of gas-liquid separator 1 is connected with compressor 3 by pipeline, the outlet of compressor 3 is connected with condenser 4 by pipeline, the outlet of condenser 4 is connected with the main Working-fluid intaking of injector 5 by pipeline, the outlet of injector 5 is connected by the entrance of pipeline with flooded evaporator 2, time outlet of flooded evaporator 2 is connected with the first magnetic valve 6, the liquid outlet of gas-liquid separator 1 is connected with the second magnetic valve 7, first magnetic valve 6 and the second magnetic valve 7 are converged by pipeline and are connected with the driving fluid entrance of injector 5.
During system cloud gray model, from condenser 4 high pressure refrigerant liquid out injector 5 injection from the part not boiling refrigerant liquid in the refrigerant liquid in gas-liquid separator 1 or flooded evaporator 2.In the present invention, in gas-liquid separator 1, isolated refrigerant gas enters in compressor 3 and compresses, then from compressor 3, higher pressure refrigerant gas out enters in condenser 4 and is condensed into saturated high pressure refrigerant liquid, from condenser 4, saturated high pressure refrigerant liquid out to enter in injector 5 as main working fluid injection from the nearly saturated refrigerant liquid of the low pressure in gas-liquid separator 1 or flooded evaporator 2 subsequently, and mix in injector 5, from injector 5, refrigerant liquid out enters in flooded evaporator 2 subsequently, enter gas-liquid separator 1 from flooded evaporator 2 primary outlet refrigerant air-liquid mixture out and carry out gas-liquid separation, complete circulation.The system pipeline that the present invention relates to is provided with the by-pass valve controls such as magnetic valve.
Effect of the present invention and benefit are in increase evaporator mass flowrate, while improving boiling heat transfer coefficient, make nearly saturated working medium circulation heating in evaporimeter, reduce the evaporation temperature difference.And adopt injector conveying working medium, the cavitation erosion problem adopting circulating pump to produce can be avoided, enhance the stability of unit.
Accompanying drawing explanation
Accompanying drawing 1 is the overall structure schematic diagram that the present invention reclaims the forced convertion circulation flooded evaporator refrigeration system that restriction loss drives.
In figure: 1 gas-liquid separator; 2 flooded evaporators; 3 compressors; 4 condensers; 5 injectors; 6 first magnetic valves; 7 second magnetic valves.
Detailed description of the invention
The specific embodiment of the present invention is described in detail below in conjunction with technical scheme and accompanying drawing.
When the liquid level in gas-liquid separator 1 higher than 50% time, open the second magnetic valve 7, close the first magnetic valve 6 simultaneously, make refrigerant liquid in gas-liquid separator 1 be flowed in injector 5 by injection; When the liquid level in gas-liquid separator 1 lower than 10% time, close the second magnetic valve 7, open the first magnetic valve 6 simultaneously, part not boiling refrigerant liquid in flooded evaporator 2 is flowed in injector 5 by injection through time outlet.
In the present invention, the course of work is as follows:
First the second magnetic valve 7 is closed, open the first magnetic valve 6, enter in gas-liquid separator 1 from the refrigerant air-liquid mixture in flooded evaporator 2 and carry out gas-liquid separation, isolated refrigerant gas enters into compressor 3 through the gas vent discharge of gas-liquid separator 1, higher pressure refrigerant gas is become after compressor 3 pressurizes compression, higher pressure refrigerant gas enters in condenser 4 and carries out condensation subsequently, condensed saturated high pressure refrigerant liquid is discharged through condenser 4 and is entered in injector 5 as main working fluid, subsequently main working fluid in injector 5 injection from the nearly saturated refrigerant liquid of the low pressure in gas-liquid separator 1 or flooded evaporator 2, and mix in injector 5, mixed refrigerant liquid enters in flooded evaporator 2 and carries out boiling heat transfer and become refrigerant air-liquid mixture, refrigerant air-liquid mixture enters in gas-liquid separator 1 and carries out gas-liquid separation subsequently, complete circulation.
Claims (3)
1. reclaim the forced convertion circulation flooded evaporator refrigeration system that restriction loss drives, comprise chilled water pipeline, cooling water pipeline, gas-liquid separator (1), flooded evaporator (2), compressor (3), condenser (4), injector (5), the first magnetic valve (6) and the second magnetic valve (7), it is characterized in that the primary outlet of flooded evaporator (2) is connected by the entrance of pipeline with gas-liquid separator (1), the gas vent of gas-liquid separator (1) is connected with compressor (3) by pipeline, the outlet of compressor (3) is connected with condenser (4) by pipeline, the outlet of condenser (4) is connected by the main Working-fluid intaking of pipeline with injector (5), the outlet of injector (5) is connected by the entrance of pipeline with flooded evaporator (2), time outlet of flooded evaporator (2) is connected with the first magnetic valve (6), the liquid outlet of gas-liquid separator (1) is connected with the second magnetic valve (7), first magnetic valve (6) and the second magnetic valve (7) are converged by pipeline and are connected with the driving fluid entrance of injector (5).
2. a kind of forced convertion circulation flooded evaporator refrigeration system reclaiming restriction loss and drive according to claim 1, is characterized in that flooded evaporator (2) is drawn liquid backflow bypass and entered in injector (5).
3. a kind of forced convertion circulation flooded evaporator refrigeration system reclaiming restriction loss and drive according to claim 1 and 2, it is characterized in that injector (5) substitutes choke valve, the refrigerant liquid while producing reducing pressure by regulating flow in injection flooded evaporator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510969523.1A CN105402959A (en) | 2015-12-21 | 2015-12-21 | Forced convective circulating flooded evaporator refrigerating system driven by recovered throttling loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510969523.1A CN105402959A (en) | 2015-12-21 | 2015-12-21 | Forced convective circulating flooded evaporator refrigerating system driven by recovered throttling loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105402959A true CN105402959A (en) | 2016-03-16 |
Family
ID=55468604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510969523.1A Pending CN105402959A (en) | 2015-12-21 | 2015-12-21 | Forced convective circulating flooded evaporator refrigerating system driven by recovered throttling loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105402959A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594280A (en) * | 2020-06-23 | 2020-08-28 | 南京天加热能技术有限公司 | Double-turbine gas suspension ORC power generation system and control method |
| US10941966B2 (en) | 2018-02-06 | 2021-03-09 | Carrier Corporation | Hot gas bypass energy recovery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004239493A (en) * | 2003-02-05 | 2004-08-26 | Denso Corp | Heat pump cycle |
| CN1687676A (en) * | 2005-06-02 | 2005-10-26 | 上海交通大学 | Refrigerating unit with mixed compression/injection in refrigerator car supplying two temperatures |
| JP2006118726A (en) * | 2004-10-19 | 2006-05-11 | Denso Corp | Ejector cycle |
| JP2008139019A (en) * | 2008-01-21 | 2008-06-19 | Denso Corp | Ejector cycle |
| CN202254452U (en) * | 2011-06-14 | 2012-05-30 | 合肥天鹅制冷科技有限公司 | Liquid level control and oil return system of refrigerating system evaporator |
-
2015
- 2015-12-21 CN CN201510969523.1A patent/CN105402959A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004239493A (en) * | 2003-02-05 | 2004-08-26 | Denso Corp | Heat pump cycle |
| JP2006118726A (en) * | 2004-10-19 | 2006-05-11 | Denso Corp | Ejector cycle |
| CN1687676A (en) * | 2005-06-02 | 2005-10-26 | 上海交通大学 | Refrigerating unit with mixed compression/injection in refrigerator car supplying two temperatures |
| JP2008139019A (en) * | 2008-01-21 | 2008-06-19 | Denso Corp | Ejector cycle |
| CN202254452U (en) * | 2011-06-14 | 2012-05-30 | 合肥天鹅制冷科技有限公司 | Liquid level control and oil return system of refrigerating system evaporator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10941966B2 (en) | 2018-02-06 | 2021-03-09 | Carrier Corporation | Hot gas bypass energy recovery |
| CN111594280A (en) * | 2020-06-23 | 2020-08-28 | 南京天加热能技术有限公司 | Double-turbine gas suspension ORC power generation system and control method |
| CN111594280B (en) * | 2020-06-23 | 2023-09-19 | 南京天加能源科技有限公司 | Dual-turbine gas suspension ORC power generation system and control method |
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Application publication date: 20160316 |
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