CN105042916A - Distributed solar grid-connected power generation refrigeration and transduction system - Google Patents

Distributed solar grid-connected power generation refrigeration and transduction system Download PDF

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Publication number
CN105042916A
CN105042916A CN201510540868.5A CN201510540868A CN105042916A CN 105042916 A CN105042916 A CN 105042916A CN 201510540868 A CN201510540868 A CN 201510540868A CN 105042916 A CN105042916 A CN 105042916A
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China
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refrigeration
energy
solar
refrigerating medium
storage
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CN201510540868.5A
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Chinese (zh)
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王乐东
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云南犀鸟科技有限公司
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Publication of CN105042916A publication Critical patent/CN105042916A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/20Climate change mitigation technologies for sector-wide applications using renewable energy

Abstract

The invention provides a distributed solar grid-connected power generation refrigeration and transduction system. The system comprises two sub-systems of a solar grid-connected power generation system and a refrigeration and transduction system. The solar grid-connected power generation system is composed of a solar array, a photovoltaic inversion controller, a multifunctional metering device, a public power grid and a storage battery. The interior of the refrigeration and transduction system is divided into a refrigeration system and an energy storage and heat exchange system. In the refrigeration industry, the distributed solar grid-connected power generation refrigeration and transduction system has a fixed field space, and electric charge is the maximum cost. The distributed solar grid-connected power generation system and the refrigeration system are combined, and the clearance of a large refrigeration place is fully used; solar energy which is not stable and continuous is utilized, the refrigeration system is driven by solar power generation to conduct refrigeration and cold storage, and the public power grid serves as infinite-capacity standby energy; and through reasonable design and allocation, the requirement of the refrigeration system for electric energy can be met, electricity can be sold to the outside, electricity expenditure of enterprises are saved, and extra electricity selling benefits can also be achieved.

Description

A kind of distributed solar energy generates electricity by way of merging two or more grid systems refrigeration energy converting system

Technical field

The present invention relates to a kind of distributed solar energy generate electricity by way of merging two or more grid systems storage cold energy converting system, belong to solar energy (photovoltaic) electricity generation system and cold-storing type refrigeration system, especially distributed solar energy generating and refrigeration system manufacture and design field.

Background technology

Along with socioeconomic development, refrigeration industry obtains vigorous growth, in fresh processing, fruits and vegetables store, the industries such as Chemical Manufacture all need cold temperature source, the market space is huge, the construction of the large-scale refrigerating systems such as freezer is obtaining great growth in recent years, because in transit link, goods is preserved refrigeration requirement speed mostly cold, cause needing to strengthen refrigeration system refrigerating capacity in the large-scale refrigerating systems such as freezer manufacture and design, because the restriction of refrigeration system technology needs to arrange to overlap refrigeration plant usually in extensive refrigeration system, construction cost and operation expense is caused significantly to improve, and run peak period at freezer, power consumption is huge, larger burden is caused to electrical network, enterprise also will pay high grid electricity fee cost for it.

Along with the raising of people's environmental consciousness, green clean energy resource progressively approve by people, and China also becomes solar chip big producing country, cost for solar power generation declines year by year, under the overall background of energy-saving and emission-reduction, domestic beginning large-scale promotion solar power plant is built, although solar electrical energy generation has the advantage of its cleanliness without any pollution, but its shortcoming is also fairly obvious: a, solar power generation entire efficiency is on the low side, floor space requirements is large; B, solar electrical energy generation are greatly affected by environment, and cloud, shade all significantly can reduce power output, in then no-output at night; C, solar electrical energy generation store difficulty, also do not have the electricity storage technology of economical and efficient at present, and employing battery accumulation of energy cost is high, the life-span is short.Set up on large-scale grid-connected power station so current solar electrical energy generation is applied in mostly, and it is huge to set up large-scale grid-connected power station cost, rate of return on investment is lower, too much relies on public subsidies at present, and when not subsidizing, solar electrical energy generation does not have economic advantages; And for small-sized distributed solar energy electricity generation system because the limitation of energy storage technology causes application not extensive.

At refrigeration industry, generally all possesses fixing space, place, and the electricity charge cost that to be them maximum, the power consumption how reducing refrigeration industry to user and power supply enterprise and to country all tool have very great significance, combined by distributed solar energy generating and refrigeration system, fill the headroom that part utilizes large-scale refrigeration place, though utilize unstable but solar energy endlessly, refrigeration system refrigeration and cold accumulation is driven by solar electrical energy generation, utilize utility network as the stand-by power source of infinite capacity, the demand of refrigeration system to electric energy not only can be met by reasonably designing and configuring, but also external sale of electricity can be realized, not only save the electric cost expenditure of enterprise, additionally can also bring the income of sale of electricity, and enterprise also greatly reduces carbon emission amount, benefit the nation and the people.

Summary of the invention

In order to reduce the consumption of refrigeration system to electric energy, fill part and utilize clean solar energy source, the present invention devises a kind of distributed solar energy and to generate electricity by way of merging two or more grid systems refrigeration energy converting system, as shown in Figure 1, it is main for realizing being generated electricity by distributed solar energy, public electric wire net is auxiliary refrigeration system energy-provision way, by redesigning refrigeration system and transforming, realize real-time cold to store, solar energy is stored by refrigeration system, released cold quantity is put by accumulator when needs cooling, by distributed solar energy is generated electricity by way of merging two or more grid systems and refrigeration system combine, give full play to both strong points, cover the shortage, not only solve the energy storage problem of solar electrical energy generation, also refrigeration system is solved to the demand reducing grid electricity fee cost and raising refrigerating capacity, and realize distributed solar energy generate electricity by way of merging two or more grid systems and refrigeration system combine need solve problem be:

1, maximum using sun the subject of knowledge and the object of knowledge generated energy, reduces the dependence to electrical network, outwards transmits electricity under satisfied personal prerequisite again.

2, refrigeration system power accommodation is enough large, can adapt to continuous firing under different capacity input.

3, refrigeration system evaporator is redesigned, the conversion efficiency of the raising energy conversion box of maximum possible.

4, refrigerating medium loop controls, and automatic decision system running state realizes refrigerating medium loop and automatically adjusts, and realizes the maximization of transducing energy storage efficiency, intellectuality.

5, low temperature phase change accumulator puts modularization.

Technical scheme of the present invention is as follows:

A kind of distributed solar energy generates electricity by way of merging two or more grid systems refrigeration energy converting system, and the present invention is characterised in that, comprises solar grid-connected electricity generation system and refrigeration energy converting system two subsystems; Solar grid-connected electricity generation system is made up of solar array, photovoltaic inversion controller, multifunctional metering device, public electric wire net, nucleus module that batteries five is large, solar array is connected with photovoltaic inversion controller, solar energy is converted to electric energy and inputs to photovoltaic inversion controller, photovoltaic inversion controller connects batteries and multifunctional metering device respectively, and multifunctional metering device is connected with public electric wire net; Solar power system is connected with the controller of power cable with refrigeration energy converting system by the control cables of being drawn respectively by photovoltaic inversion controller; Refrigeration energy converting system is divided internally into refrigeration system and energy storage heat-exchange system, the refrigeration compressor set controlled respectively by controller, condensing plant, drier, liquid storage box, expansion valve, the energy conversion box comprising evaporimeter have have sequentially connected and composed the refrigeration system in refrigeration energy-storage system, evaporimeter is enclosed in energy conversion box, is provided with refrigerating medium in energy conversion box; By energy conversion box, cryogenic pump, magnetic valve A, comprise that the accumulator storing up cold module is put, magnetic valve B, magnetic valve C, blower fan refrigeration module have have sequentially connected and composed energy storage heat-exchange system; Wherein magnetic valve A is also connected with blower fan refrigeration module, and blower fan refrigeration module, magnetic valve C are connected with energy conversion box respectively.

Energy conversion box of the present invention is set to the flat vertical vessel of a sealed thermal insulating, the radiating fin comprise a box wall, being arranged on the evaporimeter in box wall and being positioned at inside evaporimeter, and whole evaporimeter comprises radiating fin and is soaked among refrigerating medium; At box wall, (top offers refrigerating medium entrance, and bottom offers refrigerating medium outlet, offers refrigerant evaporator entrance in box wall side surface upper part, and bottom offers refrigerant evaporator outlet.

Evaporimeter of the present invention adopts flat snakelike comb to install the structure of described radiating fin additional.

The energy-storage module that accumulator of the present invention is put comprises a lagging casing and is arranged on the refrigerating medium energy storage comb in lagging casing, this refrigerating medium energy storage comb is set to snakelike in vertical structure, its upper end connects the refrigerating medium delivery port being opened in lagging casing top, and lower end connects the refrigerating medium water inlet being opened in lagging casing bottom; Sodium chloride or potassium chloride or calcium chloride solution is adopted to store up cold material as low temperature phase change; Whole accumulator puts employing modularized structure, and the interface of module is unified, supports serial or parallel connection mode of operation; Accumulator puts the control circuit adopting and have temperature control and automatically controlled bypass functionality; The refrigerating medium gateway that accumulator is put is located at the same side.

The present invention adds refrigerating medium reservoir in described refrigeration energy converting system, and wherein energy conversion box, magnetic valve C, blower fan refrigeration module are connected with refrigerating medium reservoir respectively.

The present invention's refrigeration compressor set of freezing in energy converting system adopts the multiple stage of more than in parallel, by the controller of the system core according to each compressor in regular nonstick system of control cold compression unit, increase the accommodation of refrigeration system compressor to power supply input power.

Refrigeration energy converting system is divided into refrigeration system and energy converting system two parts by energy conversion box by the present invention, and refrigeration system adopts refrigerant circulation refrigeration, and energy converting system adopts refrigerating medium circulation carry out energy storage or let cool.

The controller of present system core can according to the real-time generated output of solar energy and refrigeration actual demand, the cold energy-storage system duty of nonstick system of control.

Storage of the present invention cold module refrigerating medium water outlet is provided with temperature sensor.

The invention has the beneficial effects as follows:

(1) the present invention is by redesigning refrigeration system and transforming, realize real-time cold to store, solar energy is stored by refrigeration system, released cold quantity is put by accumulator when needs cooling, by distributed solar energy is generated electricity by way of merging two or more grid systems and refrigeration system combine, give full play to both strong points, cover the shortage;

(2) not only solve the energy storage problem of solar electrical energy generation, also solve refrigeration system to the demand reducing grid electricity fee cost and raising refrigerating capacity;

(3) generated energy of energy maximum using solar energy of the present invention, reduces the dependence to electrical network; Can according to the average daily power consumption of refrigeration system maximum power requirement and peak period, the headroom area possessed with reference to user reasonably calculates solar energy power generating scale, ensure that user reduces the electricity needs to public electric wire net to greatest extent, the photovoltaic generation when ensureing refrigeration system electricity needs;

(4) photovoltaic inversion controller adopts MPPT maximum power point tracking technology (MPPT), can ensure the maximum power output of solar photovoltaic assembly the moment;

(5) the real-time output function of the maximum exportable power data support of solar power system, the control system of refrigeration system controls refrigeration system working condition by these data of Real-time Collection;

(6) photovoltaic inversion controller possesses isolated power grid ability, after public electric wire net has a power failure, can run by off-grid, ensureing the normal operation of refrigeration system Core Feature according to arranging photovoltaic inversion controller;

(7) the present invention devises a set of intelligence control system, can the exportable peak power of Real-Time Monitoring solar power system, the duty of cold total capacity and current electricity prices information intelligent determination compressor bank is stored up according to system, the cold situation of storage of the cold module of all storages can be monitored, determine to carry out Chu Leng by refrigerating medium energy converting system to the cold module of storage according to the state that concrete accumulator is put, let cool, bypass, series connection, parallel connection waits operation, can also according to the duty requirement of refrigeration target, intelligent decision refrigeration system mode of operation, single storage is cold, singly let cool or synchronously carry out.

Operation principle of the present invention is:

1. energy supply of the present invention mainly comes from solar energy power generating, due to the unstability of solar electrical energy generation, with too high energy storage cost, the present invention has abandoned traditional batteries to store energy mode, solar electrical energy generation is adopted to be incorporated to the mode of public electric wire net, not only well solve the problem of solar electrical energy generation instability, also greatly reduce the requirement (high-power compressor start transient current huge, by inverter support difficulty larger) of refrigeration system to inversion system peak power.In order to use solar energy to greatest extent, reducing the electricity needs to public electric wire net, reducing demand charge cost, following invention has been done to solar electrical energy generation module:

A. according to the average daily power consumption of refrigeration system maximum power requirement and peak period, the headroom area possessed with reference to user reasonably calculates solar energy power generating scale, ensure that user reduces the electricity needs to public electric wire net to greatest extent, when ensureing refrigeration system electricity needs, photovoltaic generation is profitable.

B. photovoltaic inversion controller adopts MPPT maximum power point tracking technology (MPPT), the maximum power output of moment guarantee solar photovoltaic assembly.

C. the real-time output function of the maximum exportable power data support of solar power system, the control system of refrigeration system controls refrigeration system working condition (as the startup of compressor reducer, refrigeration mode still store up cold pattern etc.) by these data of Real-time Collection.

D. photovoltaic inversion controller possesses isolated power grid ability, after public electric wire net has a power failure, can run by off-grid, ensureing the normal operation of refrigeration system Core Feature according to arranging photovoltaic inversion controller.(when needs isolated power grid, need the energy storage device configuring certain capacity, stablize solar electrical energy generation and keep exporting steadily, maintain the normal operation of system core module, the minimum place capacity that the capacity of concrete energy storage device can ensure as required calculates)

2. due to the inherent characteristic of solar electrical energy generation, the power swing of solar electrical energy generation is larger, traditional refrigeration system compressor can not adapt to the wide variation of this power, in order to utilize sun the subject of knowledge and the object of knowledge generated energy to greatest extent, reduce the electricity needs to public electric wire net, following invention carried out to traditional refrigeration compressor module:

A. determine the compressor horsepower of system needs according to refrigeration system maximum cooling capacity demand, consider the power bracket of compressor needs adaptation according to refrigeration scale and solar electrical energy generation scale.Adopt the mode of operation of multiple compressors parallel connection, multiple stage can be adopted with power light duty compressor to small refrigeration systems, 1:2:2:5 ratio setting refrigeration compressor set is adopted to high-power refrigeration system suggestion.

B. system core controller controls the duty of each compressor in refrigeration compressor set automatically according to the peak power output of current solar electrical energy generation, reaches the object of maximum using sun the subject of knowledge and the object of knowledge generated energy.

3. traditional refrigeration system is compressor start when needs freeze, cold-producing medium absorbs heat in evaporator evaporation, by blower fan, transducing is realized to evaporimeter forced air supply, directly target is freezed, and the present invention adopts solar electrical energy generation, then needing all sun the subject of knowledge and the object of knowledge Energy Maximization to use, with regard to needing, the cold of refrigeration system manufacture being stored, need to transform traditional refrigeration system, concrete invention is as follows:

A. refrigeration system evaporator is redesigned, calculate according to the heat exchange amount of refrigeration system and the relevant parameter of selected refrigerating medium, design the heat exchange area of evaporimeter and the data such as the capacity of refrigerating medium and flow velocity, manufacture and design a totally-enclosed insulation energy conversion box, evaporimeter is as in energy conversion box, and refrigerating medium flows from top to bottom and realizes rapid transducing.

B. energy conversion box is the keeping warmth space of a totally-enclosed, and casing designs is flat, rectangular, and evaporimeter adopts flat coiled-pipe to add transducing fin to increase heat exchange area, and evaporimeter transducing fin is parallel with water (flow) direction, reduces refrigerating medium flow resistance.

C. refrigerating medium adopts Multi-tube spray mode above energy conversion box to flow into, and below multitube binding mode reserves, and improves the overall conversion efficiency of energy conversion box.

4. refrigeration system of the present invention, carry out energy exchange by utilizing refrigerating medium to put in energy conversion box and accumulator, put by accumulator when needs freeze and carry out cold release, the refrigeration much larger than compressor actual power can be realized, need the flow direction according to different operating conditions refrigerating medium for this reason, to reach corresponding job requirement, concrete structure arranges as follows:

A. at energy conversion box refrigerating medium outlet washing machine with reversing valve, when system needs to store up cold, system core controller controls reversal valve and refrigerating medium is flowed to accumulator puts, when system needs refrigeration, if accumulator is put do not store enough colds, automaton controls reversal valve and refrigerating medium is directly flowed to refrigeration transducing head, realizes directly freezing.

B. store up cold module inlet built in bypass valve, reversal valve is installed in outlet.Under the cold pattern of storage, when the cold module cold of single storage stores completely, control system controls this bypass valve storing up cold module and opens, and refrigerating medium no longer flows to this and stores up cold module; In cooling mode, if store up cold module stored enough colds, system core controller then controls this outlet reversal valve storing up cold module and refrigerating medium is flowed to refrigeration module, realizes putting cooling refrigeration mode by accumulator.

5. to absorb in the present system and the accumulator storing cold is put, require to possess larger storage cold energy power, efficiently exchange capability of heat and collocation mode flexibly, also require that it possesses versatility Componentized feature, to adapt to flexible and changeable application scenarios, concrete invention is as follows:

A. store up cold module and adopt modularized design, the cold module of satisfactory storage can be selected flexibly according to refrigeration scale, the selection gist storing up cold module will all can store the refrigerating capacity of sun the subject of knowledge and the object of knowledge generated energy for principle, freezing frequently under working environment, the cold module of multiple storage can be set according to total storage cold, instant storage is realized cold, the requirement of instant refrigeration by series-parallel system.

B. storing up cold module is a sealed thermal insulating container, according to low-temperature phase-change material customised container inwall, be cool storage material for adopting eutectic salts, adopt stainless steel inwall, store up cold module and adopt built-in comb mode and storage cold material to carry out exchange heat, for ensureing that heat exchanger effectiveness installs heat exchange fin additional on comb, expand when fin direction takes into full account that cool storage material undergoes phase transition the stress produced, refrigerating medium flows into from below, and top is flowed out, and ensures first to start from below when undergoing phase transition.

C. store up cold module, at refrigerating medium water outlet, temperature sensor is installed, for monitoring the cold storage condition that accumulator is put.

D. store up porch in cold module and be provided with bypass magnetic valve, bypass magnetic valve bypass channel refrigerating medium exports.After kernel control module monitors storage cold module reaches design temperature, bypass solenoid closure, directly redirect to the refrigerating medium outlet of store up cold module by refrigerating medium, conveniently realizes the tandem working pattern of storing up cold module.

6. the present invention relates generally to 3 large systems, solar power system, compressor refrigeration system, refrigerating medium energy converting system respectively, these three systems are closely connected, can work accurately under each operating mode to coordinate this three digest journals, the present invention devises a set of intelligence control system, and concrete invention is as follows:

A. the exportable peak power of Real-Time Monitoring solar power system, stores up the duty of cold total capacity and current electricity prices information intelligent determination compressor bank according to system.

B. monitor the cold situation of storage of the cold module of all storages, the state of putting according to concrete accumulator determined to carry out Chu Leng by refrigerating medium energy converting system to the cold module of storage, let cool, bypass, the operation such as series, parallel.

C. according to the duty requirement of refrigeration target, intelligent decision refrigeration system mode of operation, Dan Chuleng, singly lets cool or synchronously carries out.

Accompanying drawing explanation

Fig. 1 is the present invention's solar grid-connected generating and cooling energy converting system structure chart;

Fig. 2 is energy conversion box profile structural representation;

Fig. 3 is the cold module profile structural representation of storage;

Fig. 4 is Systematical control main flow chart;

Fig. 5 is the cold control sub-process figure of storage;

Fig. 6 is that the energy judges sub-process figure.

Detailed description of the invention

The present invention is suitable for newly-built large-scale refrigerating system or transforms original refrigeration system, is described respectively below for two kinds of scenes:

Case 1, newly-built solar grid-connected generating freezer, at the beginning of freezer planning and designing, the occupation of land space of freezer, volume and maximum refrigeration requirement are planned and designed, calculate the critical data such as power, compressor horsepower of the distributed solar energy electrification component of needs, according to compressor horsepower determination energy conversion box relevant parameter, the size of putting according to the related data determination accumulator of monomer freezer and quantity, complete overall key Design, construct according to design.

The specific works flow process of freezer illustrates:

The refrigeration energy-storage system of solar grid-connected generating freezer is made up of solar power system and refrigeration energy converting system, system start after solar power system namely start working illumination when, solar energy inverter controller 2 adopts MPPT maximum power point tracking technology, under real-time ensuring solar power system is in the operating mode of maximum generating watt, real-time peak power data by multifunctional metering device 3 and public electric wire net 4 parallel connection, and are passed to system core controller 8 by control cables 7 by solar energy inverter controller 2; Refrigeration energy-storage system is by refrigerant-cycle systems and the refrigerating medium circulatory system two sub-System's composition, the running status of system core controller 8 Real-Time Monitoring target freezer, when system needs Chu Lengshi, system core controller 8 pairs of current energy source situations judge, corresponding compressor bank in compressor bank 9 is started according to concrete result of determination, compressor bank compressed refrigerant enters the evaporimeter 15 in energy conversion box 14 by expansion valve 13, complete exchange heat by evaporimeter 15 and refrigerating medium 16; After refrigerating medium 16 refrigerating, the dependent instruction according to system core controller 8 carries out storage SAPMAC method or kind of refrigeration cycle, is described respectively below:

Storage SAPMAC method, refrigerating medium 16 flows to accumulator by cryogenic pump 17, reversal valve 18 and puts 19 and carry out Chu Leng, system core controller 8 obtains the storage cold of the cold module 20 of storage by the temperature sensor 25 in the cold module 20 of storage, after the temperature of the cold module 20 of storage reaches design temperature, system core controller 8 controls the inlet solenoid valve of the cold module 20 of storage, refrigerating medium 16 is directly led to the refrigerating medium 16 storing up cold module 20 to export, after the cold module 20 of all storages all reaches design temperature, system is stored up cold process and is completed, and system is entered dormant state;

Kind of refrigeration cycle, kind of refrigeration cycle can be divided into compressor bank 9 supplying cold directly pattern and accumulator to put 19 cooling mode, compressor bank 9 supplying cold directly pattern can occur in accumulator put 19 cold wretched insufficiencies or refrigeration target little to refrigeration requirement when, compressor bank 9 supplying cold directly cycle of modes situation is as follows: refrigerating medium 16 is by after energy conversion box 14 refrigerating, directly flow to refrigeration module 21 by cryogenic pump 17, reversal valve 18, directly target is freezed by refrigeration module 21; Accumulator put 19 cooling mode can occur in accumulator put 19 store enough colds and solar electrical energy generation is not enough or refrigeration target will be gone larger to refrigeration work consumption when, it is as follows that accumulator puts 19 cooling mode loop conditions: refrigerating medium 16 flows into accumulator by cryogenic pump 17, reversal valve 18 and puts 19, system core controller 8 controls the duty that each stores up cold module 20, automatically the cold module 20 of suitable storage is chosen, after refrigerating medium 16 flows through storage cold module 20 absorbs cold, flow to refrigeration module 21 pairs of realization of goal fast-refrigeratings by reversal valve 22,23.

The present invention also has following alternate embodiment, in Fig. 1 solar grid-connected generating and cooling energy converting system figure, only the principle of system is set forth, in actual application, accumulator is put and can be carried out dispersed placement flexibly as required, remote exchange heat is carried out by refrigerating medium refrigerating, when needs freeze to intended target, 19 can be put by the accumulator of system core controller 8 belonging to target, start the cold module 20 of corresponding storage, realize the accurate refrigeration to intended target, modular owing to storing up cold module 20, when cold stores enough, can by the cold module of storage be installed in the blower fan kind of refrigeration cycle needing refrigeration, realize off-grid formula refrigeration mode, maximize the utilization ratio improving solar energy.

Claims (9)

1. distributed solar energy generates electricity by way of merging two or more grid systems a refrigeration energy converting system, it is characterized in that, comprises solar grid-connected electricity generation system and refrigeration energy converting system two subsystems; Solar grid-connected electricity generation system is made up of solar array (1), photovoltaic inversion controller (2), multifunctional metering device (3), public electric wire net (4), batteries (5) five large nucleus modules, solar array (1) is connected with photovoltaic inversion controller (2), solar energy is converted to electric energy and inputs to photovoltaic inversion controller (2), photovoltaic inversion controller (2) connects batteries (5) and multifunctional metering device (3) respectively, and multifunctional metering device (3) is connected with public electric wire net (4); Solar power system is connected with the controller (8) of power cable (6) with refrigeration energy converting system by the control cables (7) of being drawn respectively by photovoltaic inversion controller (2); Refrigeration energy converting system is divided internally into refrigeration system and energy storage heat-exchange system, the refrigeration compressor set (9) controlled respectively by controller (8), condensing plant (10), drier (11), liquid storage box (12), expansion valve (13), the energy conversion box (14) comprising evaporimeter (15) have have sequentially connected and composed the refrigeration system in refrigeration energy-storage system, evaporimeter (15) is enclosed in energy conversion box (14), is provided with refrigerating medium (16) in energy conversion box (14); Put (19), magnetic valve B (22) by energy conversion box (14), cryogenic pump (17), magnetic valve A (18), the accumulator that comprises the cold module of storage (20), magnetic valve C (23), blower fan refrigeration module (21) sequentially connected and composed energy storage heat-exchange system; Wherein magnetic valve A (18) is also connected with blower fan refrigeration module (21), and blower fan refrigeration module (21), magnetic valve C (23) are connected with energy conversion box (14) respectively.
2. a kind of distributed solar energy according to claim 1 generates electricity by way of merging two or more grid systems refrigeration energy converting system, it is characterized in that, energy conversion box (14) is the flat vertical vessel of a sealed thermal insulating, comprise a box wall (14.1), be arranged on the evaporimeter (15) in box wall and be positioned at the radiating fin (14.2) of evaporimeter (15) inner side, whole evaporimeter (15) comprises radiating fin (14.2) and is soaked among refrigerating medium (16); Refrigerating medium (16) entrance (14.3) is offered at box wall (14.1) top, bottom offers refrigerating medium outlet (14.4), offer refrigerant evaporator entrance (14.5) in box wall side surface upper part, bottom offers refrigerant evaporator outlet (14.6).
3. a kind of distributed solar energy according to claim 1 generates electricity by way of merging two or more grid systems refrigeration energy converting system, and it is characterized in that, evaporimeter of the present invention (15) adopts flat snakelike comb to install the structure of described radiating fin additional.
4. a kind of distributed solar energy generates electricity by way of merging two or more grid systems refrigeration energy converting system according to claim 1, it is characterized in that, the refrigerating medium heat exchange pipe (20.2) that the energy-storage module (20) that accumulator is put (19) comprises a lagging casing (20.1) and is arranged in lagging casing, this refrigerating medium heat exchange pipe is set to snakelike in vertical structure, its upper end connects the refrigerating medium delivery port (20.3) being opened in lagging casing top, and lower end connects the refrigerating medium water inlet (20.4) being opened in lagging casing bottom; Sodium chloride or potassium chloride or calcium chloride solution is adopted to store up cold material (20.5) as low temperature phase change.
5. a kind of distributed solar energy generates electricity by way of merging two or more grid systems refrigeration energy converting system according to claim 1, it is characterized in that, whole accumulator is put (19) and adopted modularized structure, and the interface of module is unified, supports serial or parallel connection mode of operation; Accumulator is put (19) adopts the control circuit with temperature control and automatically controlled bypass functionality; The refrigerating medium gateway that accumulator is put (19) is located at the same side.
6. a kind of distributed solar energy according to claim 1 generates electricity by way of merging two or more grid systems refrigeration energy converting system, it is characterized in that, in described refrigeration energy converting system, add refrigerating medium reservoir (24), wherein energy conversion box (14), magnetic valve C (23), blower fan refrigeration module (21) are connected with refrigerating medium reservoir (24) respectively.
7. to generate electricity by way of merging two or more grid systems refrigeration energy converting system according to a kind of distributed solar energy described in claim 1, it is characterized in that, refrigeration compressor set (9) in refrigeration energy converting system adopts a more parallel, is controlled each compressor in refrigeration compressor set (9) by the controller (8) of the system core.
8. a kind of distributed solar energy according to claim 1 generates electricity by way of merging two or more grid systems refrigeration energy converting system, it is characterized in that, refrigeration energy converting system is divided into refrigeration system and energy converting system two parts by energy conversion box (14), refrigeration system adopts refrigerant circulation refrigeration, and energy converting system adopts refrigerating medium circulation carry out energy storage or let cool.
9. a kind of distributed solar energy according to claim 1 generates electricity by way of merging two or more grid systems refrigeration energy converting system, it is characterized in that, in storage, cold module (20) refrigerating medium delivery port (20.3) place is provided with temperature sensor (25).
CN201510540868.5A 2015-08-28 2015-08-28 Distributed solar grid-connected power generation refrigeration and transduction system CN105042916A (en)

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