CN1912496A - Steam compression heat pump using water as working medium - Google Patents
Steam compression heat pump using water as working medium Download PDFInfo
- Publication number
- CN1912496A CN1912496A CN 200610069891 CN200610069891A CN1912496A CN 1912496 A CN1912496 A CN 1912496A CN 200610069891 CN200610069891 CN 200610069891 CN 200610069891 A CN200610069891 A CN 200610069891A CN 1912496 A CN1912496 A CN 1912496A
- Authority
- CN
- China
- Prior art keywords
- heat
- stage
- compression
- working medium
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A heat pump of steam compression type in using water as working media is featured as using water as working media, applying impeller compressor, adding interstage heat taker between various stages of compressors to realize combination of staging compression and interstage heat-take for taking away heat built up by residual heat fluid and compression power consumption of heated fluid at said heat taker and condenser separately, adding heat regenerative unit to be used on superheat of low pressure steam for improving compression course.
Description
Technical field
The invention belongs to low temperature exhaust heat utilization and refrigeration technology field.
Background technology
Adopting heat pump techniques to carry out UTILIZATION OF VESIDUAL HEAT IN is effective means, has reasonable energy-saving and environmental protection and economic benefit; With regard to UTILIZATION OF VESIDUAL HEAT IN, the temperature of many waste heats also more than 0 ℃, have relatively high expectations by heat supply temperature.In such field, can consider to adopt suitable working medium and corresponding device thereof.
In applied heat pump, steam compression heat pump is comparatively general a kind of equipment, and it generally is made up of compressor, condenser, choke valve and evaporimeter etc., and working medium is finished heat pump cycle in device inside.There is following several respects problem in existing one-level steam compression heat pump: 1. adopt working medium mostly to be compound, at aspects such as price, security, the feature of environmental protection, thermal performances weak point is arranged more.2. performance index is lower, and energy-saving benefit is affected; Particularly as heat pump, when heat supply temperature was high, performance index descended remarkable and lower.3. be subjected to the restriction of lubricating oil work safety aspect, as heat pump, its heat supply temperature relatively low (comparing) with absorption heat pump, range of application is restricted; 4. the unit thermic load is relatively low.5. equipment manufacturing cost and working medium price height.Exist the reason of above problem to be: the 1. general uninsulation of vapor compression process compression, the merit maximum that compressor consumes, the heat pump performance index is relatively low naturally, and along with the rising of compression ratio, the heat pump performance index descends fast.2. adopting compound is working medium, the inexpensive water of Cun Zaiing relatively naturally, and their combination property is generally good inadequately.3. as heat pump assembly, in the course of work of working medium, the condensation heat of main dependence working medium in condenser finished the heating to cold fluid, compressor operation in the heat pump is adiabatic simultaneously, this must bring contradiction---and need the temperature of heating high more, the pairing pressure of working medium condensation is also just high more, and correspondingly compressor exit temperature is high more, thereby may cause the lubricating oil can't operate as normal; In addition, require when high at heat supply temperature, pressure ratio increases along with corresponding, and often need adopt piston compressor this moment, thereby cause working medium flow less than normal relatively, and heat pump unit load is low.
Water is the material that nature exists, water since the standard freezing point temperature saturated vapor specific volume is big when being 0 ℃ and low temperature, pressure is low, only be used in the absorption and steam-sprayed handpiece Water Chilling Units in the past and make cold-producing medium; But other character of water is very excellent, has adopted suitable flow process, suitable device and structure, is art of heat pumps more than 0 ℃ at waste heat supply temperature, and water is that working medium should be feasible.
Summary of the invention
Technical problem to be solved by this invention is that will to provide a kind of be the steam compression heat pump of working medium with water, adopt the vane type compressor, implements spatial scalable compression, inter-stage heat-obtaining reach province's merit, reduction compressor outlet working medium temperature and raising heat pump heat supply temperature and maybe can utilize the more waste heat of low temperature.
For solving the problems of the technologies described above, basic design of the present invention is: be working medium with water, adopt the vane type compressor, the compression process of working substance steam adopted implements spatial scalable compression when compression ratio was high, the above compressor of two-stage or two-stage is set, between each stage compressor, connect the inter-stage heat collector, after a stage compressor He before the split-compressor, be provided with regenerator.The compressed steam that one stage compressor produces at first enters the inter-stage heat collector, tentatively heats being heated fluid, enters regenerator thereafter the low-pressure saturated steam that comes out from evaporimeter is heated, and enters split-compressor after finishing these two processes; Be heated fluid and at first in the inter-stage heat collector, heated, enter condenser then and finish the main process that is heated by previous stage compressor compresses working medium that produce, that temperature is higher.
As the first kind of technical scheme that realizes that the present invention conceives substantially, be to be working medium with water, adopt the vane type compressor, the heat pump of one-level compression, it mainly comprises compressor, condenser, choke valve and evaporimeter, and is consistent with the basic structure and the flow process of common compression heat pump.
As the second kind of technical scheme that realizes that the present invention conceives substantially, be to be working medium with water, adopt the vane type compressor, have the two stages of compression of regenerator, middle heat-obtaining type steam compression heat pump, it mainly comprises a stage compressor, split-compressor, condenser, choke valve, evaporimeter, inter-stage heat collector and regenerator; One stage compressor links to each other through heat collector, regenerator and split-compressor, split-compressor links to each other with condenser, condenser is communicated with evaporimeter by choke valve, and evaporimeter is communicated with a stage compressor through regenerator, links to each other by being heated the fluid passage between heat collector and the condenser; The Compressed Gas that one stage compressor produces successively enters heat collector, regenerator, enters split-compressor after suitably being cooled off again, passes through condenser, choke valve, evaporimeter and regenerator more successively, enters a stage compressor and finishes cyclic process; Be heated fluid and be introduced into the inter-stage heat collector and suitably absorb heat, enter condenser again and finish the heat absorption thermal process, the waste heat fluid is finished heat release into and out of evaporimeter.
As the third technical scheme that realizes that the present invention conceives substantially, be to be working medium with water, adopt the vane type compressor, have three grades (with multistage) compression of regenerator, middle heat-obtaining type steam compression heat pump, compare with the two stages of compression that has regenerator, middle heat-obtaining type steam compression heat pump, difference is that the former has increased the quantity of heat collector, be heated fluid with parallel connection or serial flow into and out of each heat collector.
On concrete structure and flow process, also can take heat collector to be communicated with condenser and evaporimeter, the cold fluid of inter-stage heat collector is from condensator outlet and the working medium self after throttling step-down, cooling, the heat-obtaining step in condenser that is heated fluid this moment finishes.
Proposed by the invention is working medium and the technical scheme of taking implements spatial scalable compression, inter-stage heat-obtaining with water, relatively uses the steam compression heat pump of other working medium and other structure, has following beneficial effect:
1. water is working medium, has the excellent comprehensive advantage.
2. compression process has realized implements spatial scalable compression, inter-stage cooling, and compression process is stepped to the few constant temperature compression of wasted work by complete adiabatic compression and goes a step further, and can save wasted work, improves the heat pump performance index.
3. as heat pump, its heat supply is mainly finished by the condensation heat release of working medium in condenser, in requisition for compressor working medium is compressed to the corresponding pressure of condensation temperature, and working medium is compressed the temperature of discharging compressor and substantially exceeds condensation temperature; Concerning heat pump heat supply, remove the occasion that is heated fluid heat absorption vaporization, the initial temperature that is heated fluid generally is less than its finishing temperature, like this, the Compressed Gas temperature of previous stage surpasses when being heated the fluid inlet temperature certain numerical value in the implements spatial scalable compression, can utilize the inter-stage heat collector to realize being heated the inter-stage heat-obtaining of fluid.
4. as heat pump, behind the inter-stage heat-obtaining, the gas feed temperature that enters the final stage compression obtains low, thereby makes compression final temperature be reduced.After the implements spatial scalable compression, the operating temperature of every stage compressor reduces, the outlet temperature of the outlet temperature of compressions at different levels during all less than single stage compress, and the security of lubricating oil work is guaranteed.
5. as heat pump, be heated the heat that fluid needs, still all come from heat pump (waste heat that equals to draw adds the wasted work of equipment), and mainly finish, improve condensing pressure and correspondingly improve working medium and compress finishing temperature and also can realize by the condensation heat release of working medium in condenser.The heat supply temperature that this has just improved heat pump has enlarged the range of application of steam compression heat pump.
6. working medium becomes low-pressure saturated steam absorb waste heat in evaporimeter after, its enter need before the compressor suitably overheated.It is suitably overheated now to utilize the working medium enter before the split-compressor by regenerator low-pressure saturated steam to be carried out, and has reached and has satisfied overheated purpose, has strengthened the effect of working medium inter-stage cooling simultaneously, and the wasted work that reduces compression process is had certain benefit.
7. owing to adopt implements spatial scalable compression, inter-stage cooling,, thereby can adapt to the steam restriction that saturated vapor forces down when low temperature, specific volume is big for condition has been created in the employing of vane type compressor.
Description of drawings
Fig. 1 is according to provided by the present invention, is working medium with water, adopts the one-level steam compression heat pump structure and the schematic flow sheet of vane type compressor.
Fig. 2 is according to provided by the present invention, is working medium with water, adopts two stages of compression, inter-stage heat-obtaining type steam compression heat pump structure and the schematic flow sheet of vane type compressor.
Fig. 3 is according to provided by the present invention, is working medium with water, adopts three grades of compressions, inter-stage heat-obtaining type steam compression heat pump structure and the schematic flow sheet of vane type compressor, and it is in parallel by the inter-stage heat collector to be heated fluid.
Fig. 4 is according to provided by the present invention, is working medium with water, adopts three grades of compressions, inter-stage heat-obtaining type steam compression heat pump structure and the schematic flow sheet of vane type compressor, is heated fluid train UNICOM and crosses the inter-stage heat collector.
Among Fig. 1, Fig. 3 and Fig. 2, Fig. 4, evaporimeter is different, and the latter has the refrigerant cycle pump; Fig. 3, structure shown in Figure 4 also are the representatives of multistage (more than three grades).
Fig. 5, shown in Figure 6 be respectively according to provided by the present invention, be working medium with water, adopt the complete heat-obtaining of two stages of compression, inter-stage of vane type compressor and not exclusively heat-obtaining type steam compression heat pump structure and flow process.Among Fig. 5, superheated steam heat release in heat collector of coming out from the one-level compressor becomes saturated vapor; Among Fig. 6, the superheated steam that comes out from the one-level compressor mixes with the saturated vapor that comes out in heat collector, obtains cooling to a certain degree, and the degree of superheat reduces.
Fig. 7, shown in Figure 8 be respectively according to provided by the present invention, be working medium with water, adopt three grades of compressions, the complete heat-obtaining of inter-stage and the incomplete heat-obtaining type steam compression heat pump structure and the flow process of vane type compressor, they also are multistage representatives.
Among the figure, 1-one stage compressor, 2-split-compressor, 3-three-stage blower, 4-condenser, 5-choke valve, 6-evaporimeter, 7,8-inter-stage heat collector, 9-regenerator (option), 10-refrigerant cycle pump, 11-choke valve; A-waste heat fluid, b-be heated fluid, c-heat pump internal work medium (water).
The specific embodiment
Describe the present invention in detail below in conjunction with drawings and Examples.
Shown in Figure 2 is according to provided by the present invention, is working medium with water, adopts two stages of compression, inter-stage heat-obtaining type steam compression heat pump structure and the flow process of vane type compressor, embodies essence of the present invention.On the structure, such heat pump is mainly connected to form by a stage compressor 1, split-compressor 2, condenser 4, choke valve 5, evaporimeter 6, inter-stage heat collector 7 and regenerator 9.Waste heat fluid (a) is into and out of going into evaporimeter 6, finishes heating from condenser 4 and through the working medium (c) of choke valve 5 throttling step-downs, cooling, produces low-pressure saturated steam, and himself temperature reduces; The saturated vapor that goes out flash-pot 6 is suitably overheated after regenerator 9 absorbs heat, entering a stage compressor 1 is compressed, temperature reaches and is higher than when being heated fluid (b) initial temperature certain numerical value (heat pump), enter 7 heat releases of inter-stage heat collector in being heated fluid (b), and then enter and enter condenser 4 after split-compressor 2 continues to be compressed to required pressure, be heated fluid (b) draw heat at condenser 4, be condensed into liquid; Working medium (c) enters evaporimeter 6 after choke valve 5 throttling step-downs, cooling, absorb the heat of waste heat fluid (a) and become low-pressure saturated steam, finishes circulation; Be heated fluid (b) and at first enter inter-stage heat collector 7 absorption working medium heats, make it cooling, enter condenser 4 then and finish endothermic process.
Shown in Figure 1 is according to provided by the present invention, with water is working medium, adopt the one-level steam compression heat pump structure and the schematic flow sheet of vane type compressor, consistent with the basic structure and the flow process of general steam compression heat pump, be applicable to the steam compression heat pump when compression ratio is low.
Shown in Figure 3 is according to provided by the present invention, is working medium with water, adopts three grades of compressions, inter-stage heat-obtaining type steam compression heat pump structure and the schematic flow sheet of vane type compressor, and it is in parallel by the inter-stage heat collector to be heated fluid.Comparison diagram 2 two-stage heat pumps, the latter has increased three-stage blower 3 and inter-stage heat collector 8, all the other unanimities on the structure; On the flow process, be heated the fluid parallel connection respectively into and out of inter-stage heat collector 7 and 8, uniting two into one then enters condenser 4 and finishes the process of being heated, and all the other are identical.
Shown in Figure 4 is according to provided by the present invention, is working medium with water, adopts three grades of compressions, inter-stage heat-obtaining type steam compression heat pump structure and the schematic flow sheet of vane type compressor, is heated fluid train UNICOM and crosses the inter-stage heat collector.
Fig. 5, shown in Figure 6 is respectively according to provided by the present invention, with water is working medium, adopt the two stages of compression of vane type compressor, the complete heat-obtaining of inter-stage and incomplete heat-obtaining type steam compression heat pump structure and flow process, its with shown in Figure 2 have 2 different: the one, be heated fluid and only advance, go out condenser, inter-stage heat-obtaining (cooling) better effects if in the compression process, also more be applicable to and be heated the higher occasion of fluid initial temperature, but the amount of secondary (and more than secondary) compressor compression working medium is greater than the compression working medium amount of one-level compressor, the relative increase that can bring the device wasted work in some cases; The 2nd, the structure difference of cooler is avoided separating by heat exchange for being heated between fluid and the heat pump fluid among Fig. 2, and the working medium of part self throttling cooling has become the cold fluid (as the fluid that is heated among Fig. 2) of inter-stage cooling effect among Fig. 5, Fig. 6.
Fig. 7, Fig. 8 be with Fig. 5, Fig. 6 corresponding respectively three grades be the steam compression heat pump structure and the flow process of working medium with water, compare with two-stage, the corresponding increase of quantity of three-stage blower and inter-stage heat collector, they also are multistage representatives.Among Fig. 7, become saturated vapor from superheated steam heat release in corresponding heat collector that the I and II compressor comes out; Among Fig. 8, from superheated steam that the I and II compressor comes out with from corresponding heat collector in the saturated vapor that comes out mix, obtain cooling to a certain degree, the degree of superheat reduces.
The present invention has following effect or advantage:
1. adopting water is working medium, and combination property is very excellent.
2. can improve the device performance index, improve its economic benefit.
3. reduce compression end of a period vapor (steam) temperature, improved the equipment Operation safety.
4. answering water is working medium, and the device fabrication selection is convenient, can reduce equipment manufacturing cost.
5. as heat pump assembly, heat supply temperature greatly improves, and range of application obtains enlarging.
6. device is made the requirement reduction of tubing, thereby reduced the manufacturing expense of device.
8. working medium is inexpensive, and the source is wide, thereby reduces the device operation and maintenance cost.
Claims (5)
1. steam compression heat pump, adopt the vane type aerostatic press, mainly comprise compressor, condenser, choke valve, evaporimeter, it is characterized in that: be working medium with water, the compression process of working-medium water steam (c) is carried out stage by stage, be provided with the above compressor of two-stage or two-stage, between each stage compressor, be provided with inter-stage heat collector (7)/(8), working medium is compressed and enters inter-stage heat collector (7)/(8) and regenerator (9) after the back temperature is higher than the initial temperature certain numerical value that is heated fluid (b), carry out the next stage compression process again after the heat release cooling, reach and enter condenser (4) after the demand and finish being heated the heating of fluid (b); The waste heat fluid becomes low-pressure saturated steam into and out of evaporimeter (6) heating working medium, the latter is the suitable overheated stage compressor (1) that enters after regenerator (9) heat absorption, this technology has utilized the inter-stage heat collector to realize the cooling effect of compression process, utilize regenerator to satisfy low-pressure saturated steam and cross heat demand, the cooling effect to compression process simultaneously has certain enhancing.
2. steam compression heat pump according to claim 1 is characterized in that implements spatial scalable compression and inter-stage heat-obtaining are combined, and is provided with the inter-stage heat collector between two compressors, and the inter-stage heat collector is realized to the cooling of Compressed Gas with to being heated the preliminary heating of fluid.
3. steam compression heat pump according to claim 1, it is characterized in that also can taking heat collector to be communicated with condenser and evaporimeter, the cold fluid of inter-stage heat collector is from condensator outlet and the working medium self after throttling step-down, cooling, and the heat-obtaining step in condenser that is heated fluid this moment finishes.
4. steam compression heat pump according to claim 1 is characterized in that and can set up regenerator between an evaporimeter and a stage compressor, satisfies the heat demand of crossing of low-pressure steam, and further reduces the temperature of the working medium that enters split-compressor simultaneously.
5. steam compression heat pump according to claim 1 is characterized in that this heat pump can be as refrigeration, and be heated fluid this moment is cooling medium, and the waste heat fluid is cooled fluid, in order to produce the cold fluid more than 0 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069891 CN1912496A (en) | 2006-08-17 | 2006-08-17 | Steam compression heat pump using water as working medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069891 CN1912496A (en) | 2006-08-17 | 2006-08-17 | Steam compression heat pump using water as working medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1912496A true CN1912496A (en) | 2007-02-14 |
Family
ID=37721503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610069891 Pending CN1912496A (en) | 2006-08-17 | 2006-08-17 | Steam compression heat pump using water as working medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1912496A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701755B (en) * | 2009-10-20 | 2013-01-02 | 李华玉 | Sectionalized heat absorption, sectionalized compression and sectionalized expansion gas compression type heat pump |
| CN104214837A (en) * | 2014-09-19 | 2014-12-17 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN104728820A (en) * | 2013-12-18 | 2015-06-24 | 苟仲武 | Heat pump electric steam-water boiler |
| CN104807184A (en) * | 2015-04-27 | 2015-07-29 | 西安交通大学 | Two-stage compression heat pump water heater system and work method thereof |
| CN106225314A (en) * | 2016-04-29 | 2016-12-14 | 李华玉 | 3rd class thermal drivers compression heat pump |
| CN106288518A (en) * | 2016-04-01 | 2017-01-04 | 安徽新富地能源科技有限公司 | A kind of ground temperature can promote arrangement for connecting system |
| CN107388442A (en) * | 2017-06-17 | 2017-11-24 | 安徽南国机电科技发展有限公司 | A kind of water physical change exchange energy energy supplying system |
-
2006
- 2006-08-17 CN CN 200610069891 patent/CN1912496A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701755B (en) * | 2009-10-20 | 2013-01-02 | 李华玉 | Sectionalized heat absorption, sectionalized compression and sectionalized expansion gas compression type heat pump |
| CN104728820A (en) * | 2013-12-18 | 2015-06-24 | 苟仲武 | Heat pump electric steam-water boiler |
| CN104214837A (en) * | 2014-09-19 | 2014-12-17 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN104807184A (en) * | 2015-04-27 | 2015-07-29 | 西安交通大学 | Two-stage compression heat pump water heater system and work method thereof |
| CN104807184B (en) * | 2015-04-27 | 2017-07-14 | 西安交通大学 | A kind of two stages of compression heat pump water heater system and its method of work |
| CN106288518A (en) * | 2016-04-01 | 2017-01-04 | 安徽新富地能源科技有限公司 | A kind of ground temperature can promote arrangement for connecting system |
| CN106225314A (en) * | 2016-04-29 | 2016-12-14 | 李华玉 | 3rd class thermal drivers compression heat pump |
| CN106225314B (en) * | 2016-04-29 | 2020-01-31 | 李华玉 | Third-class thermally-driven compression heat pump |
| CN107388442A (en) * | 2017-06-17 | 2017-11-24 | 安徽南国机电科技发展有限公司 | A kind of water physical change exchange energy energy supplying system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100434834C (en) | Steam jetting refrigerating circulation system | |
| CN1912496A (en) | Steam compression heat pump using water as working medium | |
| CN1304797C (en) | Steam compression type refrigeration cycle device of approximate ideal inverse Carnot cycle efficiency | |
| CN101226013B (en) | Grade compression-segmenting heat-taking type steam compression heat pump | |
| CN202757337U (en) | Screw type refrigeration compressor unit for economizer | |
| CN107014076B (en) | Three-pressure high-efficiency air-cooled heat pump water heater suitable for high-temperature and low-temperature environments | |
| CN1877227A (en) | Two-stage type-I absorption heat pump | |
| CN109916109A (en) | A kind of heat pump system and air conditioner | |
| CN1757991A (en) | Air-conditioner with a dual-refrigerant circuit | |
| CN110986414B (en) | Multi-temperature-zone and large-temperature-span heat pump circulating system adopting ejector for increasing efficiency | |
| CN102853578B (en) | Mixed working medium two-stage jet type refrigerating machine | |
| CN101482321B (en) | Ultra-low temperature heat pump water heater | |
| CN2896140Y (en) | Double-machine double-stage low-temperature screw-stem type refrigeration compressor group | |
| CN104567089A (en) | Compression-ejection compound refrigerating system using Knudsen compressor | |
| CN108253654B (en) | Heat pump system capable of realizing variable flow single-stage circulation and double-stage circulation | |
| CN108019974B (en) | Primary throttling and intermediate incomplete cooling heat pump system for intermediate air supplementing | |
| CN112629067B (en) | Two-stage compression composite refrigeration system with parallel thermal compression and mechanical compression and method thereof | |
| CN104913542A (en) | Injection-compression refrigerating system driven by adopting low-grade heat energy of gas-liquid separator | |
| CN213984122U (en) | Super heat pump of energy potential coupling | |
| CN200943971Y (en) | Refrigerating unit structure | |
| CN200982769Y (en) | Refrigerant supercooling jet expansion type refrigeration device | |
| CN111735224A (en) | Refrigerating system suitable for multiple load working condition | |
| CN1431439A (en) | Double stage compresses hot pump in low temp system and its equipment | |
| CN108088109B (en) | Heat pump system with middle air supplementing function | |
| CN210624993U (en) | Ultra-low temperature frequency conversion two-combined-supply unit with refrigerant cooling function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |