CN205718040U - Solar energy, geothermal energy auxiliary CO2trans-critical cycle refrigerating and heat-supplying system - Google Patents
Solar energy, geothermal energy auxiliary CO2trans-critical cycle refrigerating and heat-supplying system Download PDFInfo
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- CN205718040U CN205718040U CN201620428940.5U CN201620428940U CN205718040U CN 205718040 U CN205718040 U CN 205718040U CN 201620428940 U CN201620428940 U CN 201620428940U CN 205718040 U CN205718040 U CN 205718040U
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Abstract
This utility model relates to a kind of solar energy, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system, is characterized in that: include solar thermal collector, CO2Main compressor, CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer, CO2Gas-liquid separator, underground pipe and terminal temperature difference, described CO2Main compressor, CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator is sequentially connected with, wherein said CO2Vaporizer is connected with underground pipe again, constitutes single-stage geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying loop.Beneficial effect: this utility model achieve compressor series connection with in parallel between conversion, what compressor parallel can control compressor according to actual needs opens quantity, ensure that unit is operated with the most economical method of operation, save the energy to greatest extent, it is ensured that unit can work in the case of Partial shrinkage machine damages.
Description
Technical field
This utility model belongs to the system of refrigeration and heating, particularly relates to a kind of solar energy, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system.
Background technology
CO2Trans-critical cycle kind of refrigeration cycle is owing to it is using natural refrigerant as cold-producing medium, ODP is 0, GWP is 1, safety non-toxic, volume refrigerating capacity compressor is big, system structure is compact, become the popular selection of refrigerant replacement, but there is also operating pressure height, cross the problems such as heat loss is big, system effectiveness is low.
Solar thermal collector can provide high-quality thermal source in the winter time, can be that terminal temperature difference provides domestic hot-water simultaneously, but it is affected by illumination condition, it is impossible to provide continual and steady thermal source.
In recent years, geothermal heat pump air-conditioner technology has obtained healthy quick development and application in China, and wide variety of in current engineering is single earth-source hot-pump system.During life-time service, earth-source hot-pump system can take heat or too much too much to underground radiation from underground, causes the fluctuation of underground temperature field, reduces the coefficient of performance of unit, adds the energy consumption of system.
Patent documentation CN2011100721891 discloses the solar energy assisted carbon dioxide heat pump united air-conditioning system of a kind of Solar use and air-conditioning technical field, including: end system in collecting system, hold over system, domestic hot-water supply system, heat pump type air conditioning system and air conditioning chamber, collecting system successively with hold over system and domestic hot-water supply Cascade System, hold over system is connected with end system in heat pump type air conditioning system and air conditioning chamber successively.It is a feature of the present invention that: under cooling in summer pattern, by absorption refrigeration agent assisted carbon dioxide heat pump, compensate for the inferior position that its refrigerating capacity is poor, make the refrigeration of system entirety and heating capacity be balanced.This technical scheme application lithium-bromide absorption-type refrigerating machine, in the presence of air, lithium-bromide solution has stronger corrosivity to ordinary carbon steel, and this not only affects the life-span of unit, and affects the performance of unit and properly functioning.Refrigeration machine runs under vacuo, and air easily leaks people.Even if it was verified that the air of leakage people's trace, also can seriously damage the performance of unit.To this end, chiller demand strict seal, this just manufacture and use to unit add difficulty.Because the condensation of refrigerant vapour and absorption process, it is both needed to cooling.Owing to it directly utilizes heat energy, the heat extraction load of unit is bigger.Additionally, the highest to the water quality requirement of cooling water, in the place of water quality inferiority, special water treatment must be carried out during use, otherwise normally play affecting unit performance.
Patent documentation CN200710062609.1 discloses a kind of solar-assisted soil source CO 2 trans-critical heat pump integrated air-conditioning system.Including Trans-critical cycle titanium dioxide heat pump fluid blood circulation, solar thermal collection system, heat transfer system of underground heat exchanger and room conditioning pipe-line system four part；By hot water storage tank inner water-tank heat exchange coil, vaporizer/
CO2Above-mentioned four part organic linkings are become an integrated air-conditioning system by cross valve, valve by gas cooler.This system, for spring, summer, autumn and winter different weather condition, can use and heat, hot water or cold water processed, heats+hot water, five kinds of operational modes of refrigeration+hot water, realize hot water, refrigeration and three kinds of functions of heat supply efficiently.This technical scheme is not to CO2The measure that throttling of heat pump loss is big, the highest proposition of system effectiveness is useful.
Utility model content
This utility model is to overcome deficiency of the prior art, it is provided that a kind of solar energy, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system, it is achieved that major-minor CO2Conversion between compressor, major-minor CO2Compressor parallel form can control CO according to actual needs2Compressor open quantity, it is ensured that unit is operated with the most economical method of operation, saves the energy to greatest extent, meanwhile can realize refrigeration, heat supply and provide domestic hot-water's function.
This utility model for achieving the above object, is achieved through the following technical solutions, a kind of solar energy, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system, is characterized in that: include solar thermal collector, CO2Main compressor, CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer, CO2Gas-liquid separator, underground pipe and terminal temperature difference, described CO2Main compressor, CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator is sequentially connected with, wherein said CO2Vaporizer is connected with underground pipe again, constitutes single-stage geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying loop, described terminal temperature difference assists CO with solar thermal collector and single-stage geothermal energy respectively2Trans critical cycle refrigerating and heat-supplying loop connects and composes single-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying system.
Described CO2Main compressor is by intercooler and connects CO2Auxiliary compressor, and successively with CO2 gas cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator connects, wherein said CO2Vaporizer is connected with underground pipe again, constitutes twin-stage geothermal source auxiliary CO2Trans critical cycle refrigerating and heat-supplying loop, described terminal temperature difference assists CO with solar thermal collector and twin-stage geothermal energy respectively2Trans critical cycle refrigerating and heat-supplying loop connects and composes twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying system.
Described single-stage or twin-stage geothermal energy auxiliary CO2CO in trans critical cycle refrigerating and heat-supplying loop2Gas cooler and CO2High-pressure reservoir, exsiccator and filter it is connected with in turn between vaporizer.
Once throttling arrangement it is connected between described filter and intercooler；Described filter by secondary throttling gear respectively with CO2Vaporizer and gas-liquid separator connect.
Beneficial effect: compared with prior art, system of the present utility model enters the cold-producing medium of main compressor and mixes in intercooler with the cold-producing medium through once throttling, the delivery temperature of main compressor can be cooled to saturation, reach complete intercooling.Additionally, intercooler is provided with liquid cooling coil, the high pressure liquid of condenser is made to obtain the coldest bigger degree, the stable operation of existing energy-conserving action, the most beneficially refrigeration system.Achieve compressor series connection with in parallel between conversion, what compressor parallel can control compressor according to actual needs opens quantity, ensure that unit is operated with the most economical method of operation, save the energy to greatest extent, it is ensured that unit can work in the case of Partial shrinkage machine damages.Solar thermal collector can be that terminal temperature difference provides domestic hot-water, it is possible to auxiliary CO2Gas cooler is end heat supply.Geothermal energy is CO in the winter time2Trans critical cycle refrigeration system provides low-temperature heat source, winter air cooler end heat release is stored in underground, the beneficially recovery of underground temperature field.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1, CO2Main compressor；2、CO2Auxiliary compressor；3, intercooler；4、CO2Gas cooler；5, terminal temperature difference；6, solar thermal collector；7, water pump；8, high-pressure reservoir；9, exsiccator；10, filter；11, a throttling arrangement；12, secondary throttling gear；13、CO2Vaporizer；14, gas-liquid separator；15, underground pipe；16, water pump；17-32, stop valve.
Detailed description of the invention
Below in conjunction with preferred embodiment, to the detailed description of the invention provided according to this utility model, details are as follows:
Refer to accompanying drawing, present embodiments provide a kind of solar energy, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system, including solar thermal collector 6, CO2Main compressor 1, CO2Gas cooler 4, CO2High-pressure reservoir 8, CO2Vaporizer 13, CO2Gas-liquid separator 14, underground pipe 15 and terminal temperature difference 5, described CO2Main compressor, CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator is sequentially connected with, wherein said CO2Vaporizer is connected with underground pipe again, constitutes single-stage geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying loop, described terminal temperature difference assists CO with solar thermal collector and single-stage geothermal energy respectively2Trans critical cycle refrigerating and heat-supplying loop connects and composes single-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying system.
The preferred version of the present embodiment is, described CO2Main compressor is by intercooler 3 and connects CO2Auxiliary compressor 2, and successively with CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator connects, wherein said CO2Vaporizer is connected with underground pipe again, constitutes twin-stage geothermal source auxiliary CO2Trans critical cycle refrigerating and heat-supplying loop, described terminal temperature difference assists CO with solar thermal collector and twin-stage geothermal energy respectively by water pump 7,162Trans critical cycle refrigerating and heat-supplying loop connects and composes twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle refrigerating and heat-supplying system.
The preferred version of the present embodiment is, described single-stage or twin-stage geothermal energy auxiliary CO2CO in trans critical cycle refrigerating and heat-supplying loop2Gas cooler and CO2Exsiccator 9 and filter 10 it is connected with in turn between vaporizer.
The preferred version of the present embodiment is, is connected once throttling arrangement 11 between described filter and intercooler；Described filter by secondary throttling gear 12 respectively with CO2Vaporizer and gas-liquid separator connect.
Operation principle
CO2Gas cooler is connected with terminal temperature difference in the winter time, for terminal temperature difference heat supply；In summer to underground pipe heat release.Vaporizer was connected with terminal temperature difference in summer, for terminal temperature difference cooling；Absorb the heat in underground pipe in the winter time.Solar thermal collector can provide domestic hot-water for terminal temperature difference throughout the year, can also assist CO in the case of thermal-arrest abundance simultaneously2Gas cooler is terminal temperature difference heat supply in the winter time.
Single-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle loop: CO2After gas compresses in main compressor 1, pressure raises, CO2CO is flowed into by stop valve 18 (closing stop valve 17,19,20)2Gas cooler 4, CO2Gas cooler and terminal temperature difference carry out heat exchange, and the high-temperature, high pressure fluid after cooling enters high-pressure reservoir 8, flows through exsiccator 9, after filter 10, then by valve 29 (closing stop valve 26,27,28), CO2Through throttling arrangement 12 reducing pressure by regulating flow, then low-temp low-pressure two-phase fluid enters CO2Vaporizer 13 absorbs the heat of vaporization of underground pipe, causes liquid hammer, CO for preventing the liquid evaporated the most completely from flowing into compressor2Enter gas-liquid separator 14, finally enter CO2Main compressor 1, completes single-stage CO2Trans critical cycle loop.
Twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle loop: through CO2CO after gas cooler heat exchange2Cold-producing medium, through high-pressure reservoir 8, flows through exsiccator 9, after filter 10, a part through valve 26 through throttling arrangement 11 reducing pressure by regulating flow, the CO after blood pressure lowering2Cold-producing medium enters intercooler 3 and returns to CO through valve 19 (closing stop valve 17,18)2Auxiliary compressor compression boosting, then through CO2Gas cooler completes advanced compression circulation；Another part CO2Cold-producing medium, through valve 27,28 (closing valve 29), enters vaporizer 13, gas-liquid separator 14 through throttling arrangement 12 reducing pressure by regulating flow, returns to CO2Main compressor 1 compression boosts to intermediate pressure, enters intercooler cooling through valve 20, completes rudimentary compression circulation.
Solar energy, heat energy auxiliary CO2Trans-critical cycle parallel compressor system: CO2Simultaneously through CO2Main compressor 1 and CO2Auxiliary compressor 2 compression boosts to identical pressure (now opening valve 17,18, close valve 19,20), CO2Flow into CO2Gas cooler 4, CO2Gas cooler and terminal temperature difference carry out heat exchange, and the high-temperature, high pressure fluid after cooling enters high-pressure reservoir 8, flows through exsiccator 9, after filter 10, then by valve 29 (closing stop valve 26,27,28), CO2Through throttling arrangement 12 reducing pressure by regulating flow, then low-temp low-pressure two-phase fluid enters CO2Vaporizer 13 absorbs the heat of vaporization of underground pipe, causes liquid hammer, CO for preventing the liquid evaporated the most completely from flowing into compressor2Enter gas-liquid separator 14, finally enter CO2Main compressor and CO2Auxiliary compressor, completes solar energy, heat energy auxiliary CO2Trans-critical cycle parallel connection compressor blood circulation.
Work process
Winter
CO2Gas cooler is connected with terminal temperature difference by valve 22, valve 23, and now valve 21, valve 30 are closed；Vaporizer is connected through underground pipe 15, water pump 16, valve 32, valve 33 by valve 34, valve 31, and now valve 24, valve 25 are closed.May make up single-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle heat supplying loop, twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle heat supplying loop, solar energy, heat energy auxiliary CO2Trans-critical cycle parallel connection compressor heating system.
Emphasis is with regard to twin-stage solar energy, geothermal energy auxiliary CO below2Trans critical cycle heat supplying loop is explained:
Running: CO2Main compressor 1 is connected with intercooler 3 by valve 20, and intercooler is through valve 19 and CO2Auxiliary compressor 2 connects, and now valve 17, valve 18 are closed；CO2Auxiliary compressor and CO2Gas cooler 4, high pressure receiver, exsiccator, filter are sequentially connected with, and a cold-producing medium part enters intercooler 3 through valve 26, throttling arrangement 11, and a part enters valve 27, valve 28 connects throttling arrangement 12, and now valve 29 is closed；Throttling arrangement 12 connects vaporizer 13, CO2Main compressor 1 constitutes twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle heat supplying loop.
Tell on: twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle heat supplying loop was primarily to reduced heat loss.It is compressed to intermediate pressure through main compressor 1 from vaporizer 13 low-pressure saturated steam out, cool down through intercooler 3, it is compressed to high pressure again by auxiliary compressor, two-stage compression cycle, not only reduce the delivery temperature of compressor, and heat loss can be reduced, and reducing total wasted work of compressor, energy-saving effect is obvious.Meanwhile, the application of intercooler, both decreased the refrigerant flow of one stage of compression, and reduced again vapor (steam) temperature and the specific volume of two-stage compression import, thus reduce the wasted work of compressor.
Two, summer
CO2Gas cooler is connected with valve 30, connects underground pipe 15 through valve 31, water pump 16, valve 32, valve 21 return to CO2Gas cooler, now valve 22, valve 23, valve 33, valve 34 are closed；Vaporizer is connected with terminal temperature difference by valve 24, valve 25, and now valve 33, valve 34 are closed.May make up single-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle refrigerating circuit, twin-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle refrigerating circuit, solar energy, heat energy auxiliary CO2Trans-critical cycle parallel connection compressor refrigeration system.
Emphasis is with regard to solar energy, heat energy auxiliary CO below2Trans-critical cycle parallel connection compressor refrigeration system is explained:
Running: CO2Main compressor, CO2Auxiliary compressor is respectively by valve 18, valve 17 parallel connection, and now valve 19, valve 20 are closed；Compressor after parallel connection successively with CO2Gas cooler 4, high pressure receiver, exsiccator, filter connect, and are connected with throttling arrangement 12, vaporizer 13, gas-liquid separator 14 through valve 29, and now valve 26, valve 27, valve 28 are closed, and constitute ground solar energy, heat energy auxiliary CO2Trans-critical cycle parallel connection compressor refrigeration system.
Tell on: CO2Cold-producing medium is by after vaporizer 13, gas-liquid separator 14, and the allocated two parts that are divided into respectively enter in main compressor in parallel and auxiliary compressor.Use compressor parallel, not only there is obvious cost advantage, additionally it is possible to control the start-stop quantity of compressor according to actual load situation, there is obvious power savings advantages.
Above-mentioned reference embodiment is to this one solar energy, geothermal energy auxiliary CO2The detailed description that Trans-critical cycle refrigerating and heat-supplying system is carried out; it is illustrative rather than determinate; can according to restriction scope list several embodiments, therefore without departing from changing and modifications under this utility model general plotting, within protection domain of the present utility model should be belonged to.
Claims (4)
1. a solar energy, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system, is characterized in that:
Including solar thermal collector, CO2Main compressor, CO2Gas cooler, CO2High-pressure reservoir, CO2
Vaporizer, CO2Gas-liquid separator, underground pipe and terminal temperature difference, described CO2Main compressor, CO2Gas
Body cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator is sequentially connected with, wherein
Described CO2Vaporizer is connected with underground pipe again, constitutes single-stage geothermal energy auxiliary CO2Trans critical cycle freezes
Heat supplying loop, described terminal temperature difference assists CO with solar thermal collector and single-stage geothermal energy respectively2Across facing
Boundary's circularly cooling heat supplying loop connects and composes single-stage solar energy, geothermal energy auxiliary CO2Trans critical cycle system
Cold heating system.
Solar energy the most according to claim 1, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying system
System, is characterized in that: described CO2Main compressor is by intercooler and connects CO2Auxiliary compressor, and depend on
Secondary and CO2Gas cooler, CO2High-pressure reservoir, CO2Vaporizer and CO2Gas-liquid separator connects,
Wherein said CO2Vaporizer is connected with underground pipe again, constitutes twin-stage geothermal source auxiliary CO2Trans critical cycle
Refrigerating and heat-supplying loop, described terminal temperature difference assists CO with solar thermal collector and twin-stage geothermal energy respectively2
Trans critical cycle refrigerating and heat-supplying loop connects and composes twin-stage solar energy, geothermal energy auxiliary CO2Trans-critical cycle follows
Ring refrigerating and heat-supplying system.
Solar energy the most according to claim 1 and 2, geothermal energy auxiliary CO2Trans-critical cycle freezes
Heating system, is characterized in that: described single-stage or twin-stage geothermal energy auxiliary CO2Trans critical cycle refrigeration supplies
CO in hot loop2Gas cooler and CO2It is connected with high-pressure reservoir between vaporizer in turn, is dried
Device and filter.
Solar energy the most according to claim 3, geothermal energy auxiliary CO2Trans-critical cycle refrigerating and heat-supplying
System, is characterized in that: be connected once throttling arrangement between described filter and intercooler；Institute
State filter by secondary throttling gear respectively with CO2Vaporizer and gas-liquid separator connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620428940.5U CN205718040U (en) | 2016-05-11 | 2016-05-11 | Solar energy, geothermal energy auxiliary CO2trans-critical cycle refrigerating and heat-supplying system |
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| CN201620428940.5U CN205718040U (en) | 2016-05-11 | 2016-05-11 | Solar energy, geothermal energy auxiliary CO2trans-critical cycle refrigerating and heat-supplying system |
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| CN205718040U true CN205718040U (en) | 2016-11-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200041163A1 (en) * | 2018-07-31 | 2020-02-06 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Natural Resources | Single-pipe thermal energy system |
| CN112502925A (en) * | 2020-11-11 | 2021-03-16 | 中南大学 | Transcritical carbon dioxide power generation system and method driven by solar energy and geothermal energy in combined mode |
-
2016
- 2016-05-11 CN CN201620428940.5U patent/CN205718040U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200041163A1 (en) * | 2018-07-31 | 2020-02-06 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Natural Resources | Single-pipe thermal energy system |
| US11698207B2 (en) * | 2018-07-31 | 2023-07-11 | His Majesty The King In Right Of Canada, As Represented By The Minister Of Natural Resources | Single-pipe thermal energy system |
| CN112502925A (en) * | 2020-11-11 | 2021-03-16 | 中南大学 | Transcritical carbon dioxide power generation system and method driven by solar energy and geothermal energy in combined mode |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170511 |