CN109708380A - A kind of cold storage refrigerating system and working method based on solar energy PV/T technology - Google Patents
A kind of cold storage refrigerating system and working method based on solar energy PV/T technology Download PDFInfo
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- CN109708380A CN109708380A CN201910009915.1A CN201910009915A CN109708380A CN 109708380 A CN109708380 A CN 109708380A CN 201910009915 A CN201910009915 A CN 201910009915A CN 109708380 A CN109708380 A CN 109708380A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010257 thawing Methods 0.000 claims abstract description 254
- 238000001816 cooling Methods 0.000 claims abstract description 129
- 239000007788 liquid Substances 0.000 claims description 64
- 238000005338 heat storage Methods 0.000 claims description 57
- 239000002826 coolant Substances 0.000 claims description 34
- 238000005057 refrigeration Methods 0.000 claims description 26
- 230000008676 import Effects 0.000 claims description 25
- 238000009825 accumulation Methods 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 description 7
- 230000007812 deficiency Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 238000013083 solar photovoltaic technology Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006244 Medium Thermal Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005138 cryopreservation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a kind of cold storage refrigerating system based on solar energy PV/T technology, including solar energy PV/T system, cooling cycle system and defrosting system for the cooling cycle system defrosting；Solar energy PV/T system exports electric energy and supplies cooling cycle system；Cooling cycle system is equipped with several defrosting pipelines, and solar energy PV/T system is equipped with heat collector, and heat collector exports the defrosting medium for transmitting thermal energy to defrosting pipeline by defrosting system；Defrosting medium returns to heat collector after flowing through defrosing pipe road.The present invention also provides a kind of working methods of cold storage refrigerating system based on solar energy PV/T technology.The present invention utilizes the cryogenic media after defrosting to reduce solar energy PV/T plate temperature, improve the generating efficiency of solar energy PV/T plate, defrosting is gone using the heat that solar energy PV/T plate generates, the consumption of the electric energy of electricity consumption Defrost mode can be saved, improve the utilization rate of solar energy.
Description
Technical field
The present invention relates to a kind of cold storage refrigerating system and its working methods, in particular to a kind of to be based on solar energy PV/T technology
Cold storage refrigerating system and working method.
Background technique
Currently, energy and environment problem has become the main problem for restricting human social development, energy conservation is to push away with environmental protection
The powerful guarantee of dynamic economic development, harmonious co-existence between man and nature.It chases after with the improvement of people ' s living standards and to good life
It asks, the demand to fresh food is increasing, promotes the fast development of cold chain system.Freezer is set as the basis of cold chain system
It applies, the trend of rapid growth year by year is presented in quantity and energy consumption, is effectively reduced and solves the energy consumption of refrigeration storage system, has and weighs
The meaning wanted.On the other hand, solar energy is as a kind of reproducible clean energy resource, and distribution is wide, reserves are big, how effectively to utilize
Solar energy provides sufficient energy for the mankind, becomes the hot issue of academic circles at present research.
Freezer carries out the building of cold working and cryopreservation to perishable items by the way of artificial cooling.But due to
Cold storehouse temperature is lower, humidity is larger, leads to the serious frosting of evaporator in freezer, influences storage quality, while increasing freezer energy
Consumption.General freezer needs additional consumption energy to remove frost in defrosting, then will be defrosted again increased heat by refrigerating plant
Amount is eliminated, and double energy dissipation is caused.
In terms of Solar use, the prior art mainly includes solar energy heating technology and solar photovoltaic technology, too
The positive energy heat collection technology generation heat simple by physical means, energy taste are low.Solar photovoltaic technology utilizes the sun
High-grade electric energy can be generated, improves the utilization rate of solar energy, but solar radiation is irradiated in photovoltaic panel, only one small portion
Divide energy conversion for electric energy, remaining most of solar energy is converted into thermal energy, increases photovoltaic plate temperature, so as to cause photovoltaic electric
The internal resistance in pond increases, and makes decrease of power generation, how to effectively reduce the temperature of photovoltaic panel, becomes and improves photovoltaic panel generating efficiency
Critical issue.
Chinese invention patent CN207180131U discloses a kind of simple detachable formula solar energy freezer, utilizes traditional photovoltaic
The different forms electricity such as plate power generation, wind-light complementation power supply substitute original single power grid powering mode, but do not consider freezer
The generating efficiency problem for the energy consumption and photovoltaic panel of defrosting.Chinese patent CN108507267A discloses a kind of suitable for indirect refrigeration system
The solar energy defrosting system for refrigeration house of system carries out defrosting to freezer evaporator using the heat that solar thermal collector generates, but melts
It must shut off refrigeration unit when white.Chinese patent CN108507256A, CN207922654U disclose a kind of easy to remove
Solar energy freezer has mainly carried out the improvement of certain technology from angle easy to remove, replaces traditional power grid using solar energy
Power supply does not consider the photovoltaic/thermal comprehensive utilization of solar energy.
In conclusion how overcome the deficiencies in the prior art, sufficiently improve solar energy Generation Rate, reduce freezer defrost energy
Consumption and comprehensive energy consumption become urgent problem to be solved.
Summary of the invention
The present invention is technical problem present in solution well-known technique and Solar use can sufficiently be improved by providing one kind
The cold storage refrigerating system and working method based on solar energy PV/T technology of rate.
The technical scheme adopted by the present invention to solve the technical problems existing in the known art is that a kind of be based on solar energy
The cold storage refrigerating system of PV/T technology, including solar energy PV/T system, cooling cycle system and melt for the cooling cycle system
The defrosting system of frost；The solar energy PV/T system output electric energy supplies the cooling cycle system；The cooling cycle system
Equipped with several defrosting pipelines, the solar energy PV/T system be equipped with heat collector, the heat collector by the defrosting system to
The defrosting pipeline exports the defrosting medium for transmitting thermal energy；Described in the defrosting medium is flowed through and is returned after the defrosting pipeline
Heat collector.
Further, the solar energy PV/T system includes the solar panel, battery and inversion being sequentially connected electrically
Device；The inverter output electric energy supplies the cooling cycle system；The heat collector is plate-type collector, in the sun
Energy solar panel back is equipped with thermal-arrest pipeline.
Further, the defrosting system includes that heat storage tank, defrosting circulating pump, defrosting feed flow main line and defrosting time liquid are dry
Road；The liquid outlet of the heat storage tank is connected to the input port of the defrosting circulating pump；The delivery outlet of the defrosting circulating pump and institute
State the defeated population connection of heat collector；The delivery outlet of the heat collector is connected to defrosting feed flow main line；It is dry that liquid is returned in the defrosting
Road is connected to the first accumulation of heat inlet of the heat storage tank；The input port and defrosting feed flow main line of the defrosting pipeline connect
It is logical；The delivery outlet of the defrosting pipeline goes back to liquid main line with the defrosting and is connected to.
Further, the defrosting system further includes the first triple valve；The import A and the thermal-arrest of first triple valve
The delivery outlet of device is connected to；The outlet B of first triple valve is connected to defrosting feed flow main line；First triple valve goes out
Mouth C is connected to the second accumulation of heat inlet of the heat storage tank.
Further, the defrosting system further includes the second triple valve；The import A of second triple valve and the defrosting
The delivery outlet of circulating pump is connected to；The outlet B of second triple valve is connected to the defeated population of the heat collector；Second threeway
The outlet C of valve is connected to defrosting feed flow main line.
Further, the cooling cycle system includes compressor, condenser, evaporator, cooling feed flow main line, cools back
Liquid main line and several air-coolers；Each air-cooler is equipped with a cooling line, the input of each cooling line
Mouth is connected to the cooling feed flow main line；The delivery outlet of each cooling line is connected to the liquid main line that cools back；It is described
Evaporator includes cooling medium channel and cooled medium channel；The cooling medium channel of the evaporator, the compressor and
The condenser is sequentially communicated the circulation loop to form cooling medium；Cooled medium, from the defeated of the cooled medium channel
Outlet output, and followed by the cooling feed flow main line, the cooling line and it is described cool back liquid main line after, be input to institute
State the input port in cooled medium channel.
Further, the cooling cycle system further includes cold-accumulating box, the first coolant circulation pump and the second coolant circulation pump,
The cold-accumulating box is equipped with the first cold-storage inlet, the second cold-storage inlet, the first cold-storage liquid outlet and the second cold-storage liquid outlet；Institute
It states the first cold-storage liquid outlet and is connected to through first coolant circulation pump with the defeated population in the cooled medium channel of the evaporator；
The first cold-storage inlet is connected to the delivery outlet in the cooled medium channel of the evaporator；The second cold-storage liquid outlet
It is connected to through second coolant circulation pump with the cooling feed flow main line；The second cold-storage inlet and the liquid that cools back are done
Road connection.
Further, each air-cooler is additionally provided with the defrosting pipeline, the cooling of the same air-cooler
Pipeline and defrosting pipeline are same pipeline；The cooled medium is identical with the defrosting medium；Each cooling line
Input port is equipped with input triple valve, and the import A of the input triple valve is connected to the input port of the cooling line, the input
The outlet B of triple valve is connected to the cooling feed flow main line, and the outlet C of the input triple valve and defrosting feed flow main line connect
It is logical；The delivery outlet of each cooling line is equipped with output triple valve, the import A and the cooling line of the output triple valve
Delivery outlet connection, it is described output triple valve outlet B be connected to the liquid main line that cools back, it is described export triple valve outlet
C goes back to liquid main line with the defrosting and is connected to.
The present invention also provides a kind of working method of cold storage refrigerating system based on solar energy PV/T technology, this method
Are as follows: the electric energy for generating solar panel supplies cooling cycle system, and the thermal energy generated when solar panel is worked leads to
Heat collector absorption is crossed, and by the defrosting medium for transmitting thermal energy, transmits several defrostings of thermal energy to cooling cycle system
In pipeline, defrosting medium carries out heat exchange in defrosting pipeline, is then return to heat collector.
Further, it is stored after the heat absorption generated when solar panel being worked by heat storage tank, passes through valve
Control makes the thermal energy of heat collector be delivered to cooling cycle system when and cooling cycle system sufficient in sunlight needs defrosting
In defrosting pipeline；When sufficient and cooling cycle system does not need defrosting in sunlight, the thermal energy of heat collector is made to be delivered to heat storage tank；
When insufficient and cooling cycle system needs defrosting in sunlight, the thermal energy of heat storage tank is made to be delivered to the defrosing pipe of cooling cycle system
Lu Zhong.
The advantages and positive effects of the present invention are:
The present invention can make full use of solar energy, reduce freezer energy consumption and waste, utilize temperature after defrosting medium defrosting
Degree reduces, and to reduce the temperature of solar energy PV/T plate, improves the generating efficiency of solar energy PV/T plate, utilizes solar energy PV/T plate
The heat of generation goes defrosting, can save the consumption of the electric energy of electricity consumption Defrost mode.Solar panel is both utilized in the present invention
The thermal energy generated when work carries out defrosting, and the cold energy that heat exchange when passing through defrosting is generated, and is transmitted to solar panel, drops
Low solar panel operating temperature, improves the generating efficiency of solar energy PV/T plate, makes full use of solar energy in this way, improve
The utilization rate of solar energy.
The present invention uses identical cold-storage and accumulation of heat circulatory mediator, and cold-storage and accumulation of heat circulatory mediator can make in air-cooler
With identical pipeline, air-cooler in cooling cycle system can alternately be cut between defrosting operating mode and refrigeration work mode
It changes, volume of the electric heating tube in air-cooler, increases heat exchange area when reducing conventional electric heater defrosting.
Daytime of the invention is freezed using electric energy produced by solar energy PV/T plate, is saved the energy, is reduced or avoided simultaneously
Using power grid peak electricity, electric cost is reduced, while considering the seasonal variation and unstability of solar energy, system is adopted
With cold storage design, the stability of system operation can be sufficiently improved.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: 1, compressor；2, condenser；3, electric expansion valve；4, evaporator；5, the first coolant circulation pump；6, cold-storage
Case；7, the second coolant circulation pump；8, inverter；9, battery；10, solar panel；11, the second triple valve；12, defrosting follows
Ring pump；13, the first triple valve；14, heat storage tank；15, air-cooler；16, triple valve is exported；17, triple valve is inputted；18, check valve；
101, defrosting feed flow main line；102, liquid main line is gone back in defrosting；141, the second accumulation of heat inlet；142, the first accumulation of heat inlet；143,
The liquid outlet of heat storage tank；161, the first cold-storage inlet；162, the second cold-storage inlet；163, the first cold-storage liquid outlet；164,
Second cold-storage liquid outlet；201, cooling feed flow main line；202, liquid main line is cooled back.
Specific embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following embodiment, and cooperate attached drawing
Detailed description are as follows:
Referring to Figure 1, a kind of cold storage refrigerating system based on solar energy PV/T technology, including solar energy PV/T system, system
SAPMAC method system and defrosting system for the cooling cycle system defrosting；The solar energy PV/T system output electric energy supplies institute
State cooling cycle system；The cooling cycle system is equipped with several defrosting pipelines, and the solar energy PV/T system is equipped with thermal-arrest
Device, the heat collector export the defrosting medium for transmitting thermal energy by the defrosting system to the defrosting pipeline；It is described to melt
White medium returns to the heat collector after flowing through the defrosting pipeline.
Defrosting medium is a kind of heating agent, can be transmitted for water, oil etc. thermal energy (heat) various liquid medias or
Gaseous mediums.Preferred liquid heating agent of the present invention.Defrosting pipeline, which refers to, discharges thermal energy by the media flow for transmitting thermal energy to carry out
The heat exchange pipe of defrosting.
The power output that solar energy PV/T system generates, supplies some electrical equipments of cooling cycle system, can also be simultaneously
Net enters power grid, the thermal energy that solar energy PV/T system generates when working, the pipe for absorbing by heat collector, and passing through defrosting system
Road, by thermal energy by transmit thermal energy defrosting medium be sent in the defrosting pipeline of cooling cycle system, in defrosting pipeline into
Row heat exchange discharges thermal energy, becomes the lower defrosting medium of temperature by the higher defrosting medium of temperature, the defrosting medium after cooling
Heat collector is returned by the pipeline of defrosting system, absorbs thermal energy again in heat collector, while solar energy PV/T system being made to cool down,
The defrosting pipeline of solar energy PV/T system, defrosting system and cooling cycle system forms the circulation loop of defrosting media flow.Benefit
The temperature that solar energy PV/T plate is reduced with the low temperature defrosting medium after defrosting, improves the generating efficiency of solar energy PV/T plate, benefit
So that defrosting medium is heated up with the heat that solar energy PV/T system generates, is carried out in defrosting pipeline with the higher defrosting medium of temperature
Heat exchange discharges thermal energy, can save the consumption of the electric energy of electricity consumption Defrost mode.
Further, the solar energy PV/T system may include the solar panel 10 being sequentially connected electrically, 9 and of battery
Inverter 8；The inverter 8 exports electric energy and supplies the cooling cycle system；The heat collector can be plate-type collector,
10 back of solar panel can be equipped with thermal-arrest pipeline.Electric energy can be stored using battery 9；It is exported using inverter 8
Voltage can be alternating current, and a variety of conventional alternating current electrical equipments can be more suitable for grid-connected power grid, the voltage of output.In the solar-electricity
The plate-type collector structure that plate 10 back in pond is equipped with thermal-arrest pipeline is simple, and heat absorption is high-efficient.
Further, the defrosting system may include heat storage tank 14, defrosting circulating pump 12, defrosting feed flow main line 101 and melt
Frost goes back to liquid main line 102；The liquid outlet 143 of the heat storage tank is connected to the input port of the defrosting circulating pump 12；The defrosting follows
The delivery outlet of ring pump 12 is connected to the defeated population of the heat collector；The delivery outlet of the heat collector and defrosting feed flow main line
101 connections；The defrosting is gone back to liquid main line 102 and can be connected to the first accumulation of heat inlet 142 of the heat storage tank 14；The defrosing pipe
The input port on road is connected to defrosting feed flow main line 101；Liquid main line 102 is gone back in the delivery outlet of the defrosting pipeline and the defrosting
Connection.Thermal energy can be stored using heat storage tank 14, in sunlight deficiency, the thermal energy that heat collector generates is not enough to realize that refrigeration is followed
When the defrosting of loop system, the thermal energy that heat storage tank 14 can be used to store, the defrosting pipeline of sustainable supply cooling cycle system.
Further, the defrosting system may also include the first triple valve 13；The import A of first triple valve 13 can be with
The delivery outlet of the heat collector is connected to；The outlet B of first triple valve 13 can be connected to defrosting feed flow main line 101；Institute
The outlet C for stating the first triple valve 13 can be connected to the second accumulation of heat inlet 141 of the heat storage tank 14.
Using the first triple valve 13, by the opening and closing in valve difference channel, defrosting medium can realize different circulation patterns:
1, when sunlight abundance, when cooling cycle system needs defrosting, the import A and the first triple valve of the first triple valve 13
13 outlet B conducting, heat collector can direct output temperature higher defrosting medium, until defrosting feed flow main line 101, then to needing
In the defrosting pipeline of the cooling cycle system of defrosting, the defrosting of cooling cycle system is realized.
2, when sunlight abundance, when cooling cycle system does not need defrosting, the import A of the first triple valve 13 and the first threeway
The outlet C of valve 13 is connected, heat collector can the direct higher defrosting medium of output temperature, pass through the second accumulation of heat feed liquor of heat storage tank 14
Mouth 141 send to heat storage tank 14 and carries out thermal energy storage.
Electric or hand triple valve can be selected in first triple valve 13, can also be used other modes, such as by the defeated of heat collector
Two branches of outlet setting, each branch are equipped with electric or hand reversal valve etc..
Further, the defrosting system may also include the second triple valve 11；The import A of second triple valve 11 can be with
The delivery outlet of the defrosting circulating pump 12 is connected to；The outlet B of second triple valve 11 can connect with the defeated population of the heat collector
It is logical；The outlet C of second triple valve 11 can be connected to defrosting feed flow main line 101.When the second triple valve 11 is arranged, in institute
It states and sets check valve 18 between the outlet B of the first triple valve 13 and defrosting feed flow main line 101, make defrosting medium one-way flow only
Defrosting feed flow main line 101 can be flowed to, reverse flow is unable to.
Using the second triple valve 11, by the opening and closing in valve difference channel, defrosting medium can realize different circulation patterns:
1, when sunlight abundance, when cooling cycle system needs defrosting, the import A and the second triple valve of the second triple valve 11
11 outlet B conducting, heat storage tank 14 can direct output temperature lower defrosting medium, until realizing in heat collector to solar energy PV/
The absorption for the thermal energy that T system generates when working, and cold energy is discharged, so that solar energy PV/T system is cooled down.
2, when sunlight deficiency, when cooling cycle system needs defrosting, defrosting medium temperature is higher in heat storage tank 14, and second
The outlet C of the import A of triple valve 11 and the second triple valve 11 conducting, heat storage tank 14 can direct higher defrosting Jie of output temperature
Matter, until refrigeration cycle system is realized then into the defrosting pipeline for the cooling cycle system for needing defrosting in defrosting feed flow main line 101
The defrosting of system.
Electric or hand triple valve can be selected in second triple valve 11, can also be used other modes, such as by defrosting circulating pump
Two branches are arranged in 12 delivery outlet, and each branch is equipped with electric or hand reversal valve etc..
First triple valve 13, the second triple valve 11 may be used in combination, and defrosting system can realize different operating modes:
1, when sunlight abundance, when cooling cycle system needs defrosting, the import A and the first triple valve of the first triple valve 13
The outlet B conducting of 13 outlet B conducting, the import A of the second triple valve 11 and the second triple valve 11, heat collector pass through the first threeway
The higher defrosting medium of 13 output temperature of valve, until defrosting feed flow main line 101, then to the defrosting for the cooling cycle system for needing defrosting
In pipeline, the defrosting of cooling cycle system is realized, the lower defrosting medium of temperature exported from defrosting pipeline is done until liquid is returned in defrosting
Road 102, then heat storage tank 14 is entered by the first accumulation of heat inlet 142 of heat storage tank 14, then followed from heat storage tank 14 by defrosting
12 output of ring pump, by the second triple valve 11, so lower defrosting medium of temperature is input in heat collector, is realized to the sun
The absorption of the thermal energy generated when energy PV/T system work, and cold energy is discharged, so that solar energy PV/T system is cooled down.
2, when sunlight abundance, when cooling cycle system does not need defrosting, the import A of the first triple valve 13 and the first threeway
The outlet C of valve 13 is connected, and the outlet B conducting of the import A of the second triple valve 11 and the second triple valve 11, the lower defrosting of temperature is situated between
Matter is exported from heat storage tank 14 by defrosting circulating pump 12, by the second triple valve 11, so lower defrosting medium of temperature, and input
Into heat collector, the absorption of the thermal energy generated when working solar energy PV/T system is realized, and discharge cold energy, make solar energy PV/T
System cooling；After defrosting Absorption of Medium thermal energy, temperature is increased to be exported from heat collector, by the first triple valve 13, from heat storage tank 14
The second accumulation of heat inlet 141 enter heat storage tank 14 carry out thermal energy storage.
2, when sunlight deficiency, when cooling cycle system needs defrosting, in the outlet B of first triple valve 13 and described
Check valve 18 is set between defrosting feed flow main line 101, makes defrosting medium one-way flow that can only flow to defrosting feed flow main line 101, it cannot
Reverse flow, it is not necessary to consider 13 on state of the first triple valve.The import A of second triple valve 11 and the second triple valve 11
Export C conducting, heat storage tank 14 passes through accumulation of heat, and the defrosting medium temperature in heat storage tank 14 is higher, the higher defrosting medium of temperature from
Heat storage tank 14 is exported by defrosting circulating pump 12, by the second triple valve 11, until defrosting feed flow main line 101, then to needing defrosting
Cooling cycle system defrosting pipeline in, realize the defrosting of cooling cycle system, from defrosting pipeline export temperature it is lower
Defrosting medium until liquid main line 102 is gone back in defrosting, then enters heat storage tank 14 by the first accumulation of heat inlet 142 of heat storage tank 14.
The preferred position of the second accumulation of heat inlet 141 of first accumulation of heat inlet 142 of the heat storage tank 14, the heat storage tank 14
In the top of the heat storage tank, the liquid outlet 143 of the heat storage tank is preferably placed at the bottom of the heat storage tank.
Further, the cooling cycle system may include compressor 1, condenser 2, evaporator 4, cooling feed flow main line
201, liquid main line 202 and several air-coolers 15 are cooled back；Each air-cooler 15 can be equipped with a cooling line, each
The input port of the cooling line is connected to the cooling feed flow main line 201；The delivery outlet of each cooling line with it is described
Cool back the connection of liquid main line 202；The evaporator 4 may include cooling medium channel and cooled medium channel；The evaporator 4
Cooling medium channel, the compressor 1 and the condenser 2 be sequentially communicated the circulation loop to form cooling medium；It is cooled
Medium can be exported from the delivery outlet in the cooled medium channel, and followed by the cooling feed flow main line 201, described cold
But pipeline and it is described cool back liquid main line 202 after, be input to the input port in the cooled medium channel.According to the area of freezer
With cooling capacity requirement, the refrigeration unit of the compositions such as settable one group of compressor 1 and condenser 2 controls cold wind with multiple air-coolers 15
The work of machine 15 can more easily adjust temperature；And convenient for alternately defrosting, avoid storehouse temperature fluctuation big.
The cooling medium channel of the evaporator 4 circulates cooling medium, and cooled medium channel cycle flows quilt
Cooling medium；Cooling medium and cooled medium carry out heat exchange in evaporator.
Cooling medium and cooled medium be all be a kind of refrigerant, cold energy (cooling capacity) can be can be transmitted for water, oil etc.
Various liquid medias or gaseous mediums.Preferred liquid refrigerant of the present invention.Cooling line refers to the medium flow field by transmitting cold energy
The dynamic heat exchange pipe for discharging cold energy to freeze.
Further, the cooling cycle system may also include cold-accumulating box 6, the first coolant circulation pump 5 and the second cooling and follow
Ring pump 7, the cold-accumulating box 6 is equipped with the first cold-storage inlet 161, the second cold-storage inlet 162,163 and of the first cold-storage liquid outlet
Second cold-storage liquid outlet 164；The first cold-storage liquid outlet 163 can be through first coolant circulation pump 5 and the evaporator 4
The defeated population in cooled medium channel is connected to；The first cold-storage inlet 161 can be logical with the cooled medium of the evaporator 4
The delivery outlet in road is connected to；The second cold-storage liquid outlet 164 can be through second coolant circulation pump 7 and the cooling feed flow main line
201 connections；The second cold-storage inlet 162 can be connected to the liquid main line 202 that cools back.The first of the cold-accumulating box 6 stores
Cold inlet 161, the second cold-storage inlet 162 are preferably placed at the top of the heat storage tank, and the first cold-storage of the cold-accumulating box 6 goes out
Liquid mouth 163 and the second cold-storage liquid outlet 164 are preferably placed at the bottom of the heat storage tank.
It is this that daytime can be freezed using electric energy produced by solar energy PV/T plate by the way of cold-accumulating box 6, reduce or
It avoids using power grid peak electricity, while considering the seasonal variation and unstability of solar energy, system uses cold storage
Design can sufficiently improve the stability of system operation.
Further, each air-cooler 15 can also be equipped with a defrosting pipeline, the same air-cooler 15
Cooling line and defrosting pipeline can be same pipeline；The cooled medium is identical with the defrosting medium；It is each described cold
But the input port of pipeline can be equipped with input triple valve 17, and the import A of the input triple valve 17 can be defeated with the cooling line
The outlet B of entrance connection, the input triple valve 17 can be connected to the cooling feed flow main line 201, the input triple valve 17
Outlet C can be connected to defrosting feed flow main line 101；The delivery outlet of each cooling line can be equipped with output triple valve
16, the import A of the output triple valve 16 can be connected to the delivery outlet of the cooling line, the outlet of the output triple valve 16
B can be connected to the liquid main line 202 that cools back, and the outlet C of the output triple valve 16 can go back to liquid main line 102 with the defrosting and connect
It is logical.
Air-cooler 15 works in refrigeration work mode, inputs the import A of triple valve 17 and the outlet B of input triple valve 17
Conducting exports the outlet B conducting of the import A and output triple valve 16 of triple valve 16, and the heat exchange pipe of air-cooler 15 is cooling
Pipeline, cooled medium flow into cooling line, discharge cold energy, freeze.
Air-cooler 15 works in defrosting operating mode, inputs the import A of triple valve 17 and the outlet C of input triple valve 17
Conducting exports the outlet C conducting of the import A and output triple valve 16 of triple valve 16, and the heat exchange pipe of air-cooler 15 is defrosting
Pipeline, defrosting medium flow into defrosing pipe road, discharge thermal energy, carry out defrosting.
Electric or hand triple valve can be selected in input triple valve 17, output triple valve 16, and other modes can also be used, such as
The input port of cooling line is arranged two branches, each branch is equipped with electric or hand reversal valve, and by cooling line
Two branches are arranged in delivery outlet, and each branch is equipped with electric or hand reversal valve etc..
Same air-cooler 15 as needed, can two kinds of operating modes of defrosting operating mode or refrigeration work mode it
Between alternately switch, but cannot not only work in defrosting operating mode and work again in refrigeration work mode simultaneously.
In the same time, the operating mode of different air-coolers 15 can be different, and certain air-coolers 15, which can work, to be melted
White operating mode, certain air-coolers 15 can work in refrigeration work mode；Certain air-coolers 15, which can also be shut down, not to work.
Several air-coolers 15 can work alternately in defrosting operating mode or refrigeration work mode；The temperature of freezer is not in this way
Can because while air-cooler 15 defrosting and generate the fluctuation of temperature.
Switch in this way, air-cooler 15 can replace between defrosting operating mode and refrigeration work mode, charge cycle medium
For the cooled medium for carrying out heat exchange in evaporator 4, accumulation of heat circulatory mediator is the heat collector suction in solar energy PV/T system
The defrosting medium of thermal energy is received, cooled medium is identical with defrosting medium, and such cold-storage and accumulation of heat circulatory mediator are in air-cooler 15
Identical pipeline can be used, volume of the electric heating tube in air-cooler 15, increases heat-transfer surface when reducing conventional electric heater defrosting
Product.And the construction of air-cooler 15 is simpler.
The present invention also provides a kind of working method embodiments of cold storage refrigerating system based on solar energy PV/T technology, should
Method are as follows: the electric energy for generating solar panel 10 supplies cooling cycle system, generates when solar panel 10 is worked
Thermal energy absorbed by heat collector, and by the defrosting medium for transmitting thermal energy, if transmission thermal energy is to cooling cycle system
In dry defrosting pipeline, defrosting medium carries out heat exchange in defrosting pipeline, is then return to heat collector.
The power output that solar energy PV/T system generates, supplies some electrical equipments of cooling cycle system, solar energy PV/
The thermal energy that T system generates when working, is absorbed by heat collector, and by the pipeline of defrosting system, thermal energy is passed through transmission thermal energy
Defrosting medium be sent in the defrosting pipeline of cooling cycle system, carry out heat exchange in defrosting pipeline, thermal energy discharged, by temperature
It spends higher defrosting medium and becomes the lower defrosting medium of temperature, the defrosting medium after cooling is returned by the pipeline of defrosting system
Heat collector absorbs thermal energy again in heat collector, while solar energy PV/T system being made to cool down.It is situated between using the low temperature defrosting after defrosting
Matter reduces the temperature of solar energy PV/T plate, improves the generating efficiency of solar energy PV/T plate, is generated using solar energy PV/T system
Heat so that defrosting medium is heated up, carry out heat exchange in defrosting pipeline with the higher defrosting medium of temperature, discharge thermal energy, can be with
Save the consumption of the electric energy of electricity consumption Defrost mode.
Further, it is stored, is led to by heat storage tank 14 after the heat absorption generated when solar panel 10 can work
Crossing valve control can make the thermal energy of heat collector be delivered to refrigeration and follow when and cooling cycle system sufficient in sunlight needs defrosting
In the defrosting pipeline of loop system；When sufficient and cooling cycle system does not need defrosting in sunlight, the thermal energy of heat collector can be made defeated
It send to heat storage tank 14；When insufficient and cooling cycle system needs defrosting in sunlight, the thermal energy of heat storage tank 14 can be made to be delivered to system
In the defrosting pipeline of SAPMAC method system.Thermal energy can be stored using heat storage tank 14, in sunlight deficiency, the heat of heat collector generation
When can be not enough to realize the defrosting of cooling cycle system, the thermal energy that heat storage tank 14 can be used to store, sustainable supply refrigeration cycle system
The defrosting pipeline of system.This method improves the utilization rate of solar energy simultaneously.
Illustrate several workflows of the invention below with reference to a preferred embodiment of the present invention:
When daytime solar panel 10 work and each air-cooler 15 of freezer all should not defrosting when, defrosting medium is in defrosting
Enter solar panel 10 from heat storage tank 14 through the second triple valve 11 (A mouthfuls and B mouthfuls conductings at this time) under the driving of circulating pump 12
The thermal-arrest pipeline at the back side absorbs the heat in solar panel 10, then (leads for A mouthfuls and C mouthfuls at this time through the first triple valve 13
It is logical) heat storage tank 14 is returned to, so that heat in solar panel 10 is collected in heat storage tank 14,10 institute of solar panel at this time
It produces electricl energy after battery 9, is operated and used for compressor 1 by inverter 8, by compressor 1, condenser 2, electronic expansion
The refrigeration system that valve 3 and evaporator 4 form generates cooling capacity, and the evaporator 4 includes that cooling medium channel and cooled medium are logical
Road；Cooling medium channel, the compressor 1 and the condenser 2 of the evaporator 4 are sequentially communicated to form following for cooling medium
Loop back path；Cooled medium is exported from the delivery outlet in the cooled medium channel, and followed by the cooling feed flow main line
201, the cooling line and it is described cool back liquid main line 202 after, be input to the input port in the cooled medium channel.
The cooled medium in cold-accumulating box 6 is stored under the action of the first coolant circulation pump 5, into the evaporator 4
Cooled medium channel, cooled medium by with the cooling medium heat exchange in cooling medium channel, cooled medium heat
Output is to cold-accumulating box 6 after exchange, by the cold storage of carrying in cold-accumulating box 6；Each air-cooler 15 be equipped with one it is cold
But pipeline, the input port of each cooling line are connected to the cooling feed flow main line 201；Each cooling line it is defeated
Outlet is connected to the liquid main line 202 that cools back；
When freezer needs to freeze, wherein one or several air-coolers 15 enter refrigeration work modes, it is cold in cold-accumulating box 6
But medium is delivered to cooling feed flow main line 201 by the second coolant circulation pump 7, and cooled medium passes through 15 input port of air-cooler
Input triple valve 17 (at this time A mouthfuls and B mouthful conducting), into the cooling line of air-cooler 15, in cooling line progress heat exchange
After discharge cold energy, then (be connected for A mouthful and B mouthfuls at this time) by the output triple valve 16 of 15 delivery outlet of air-cooler, into cooling back
Liquid main line 202 is most cooled back liquid main line 202 afterwards and returns to cold-accumulating box 6, realizes the refrigeration cycle of air-cooler 15.
When daytime, solar panel 10 worked, when wherein a certain or several air-coolers 15 need defrosting, then these
When the air-cooler 15 of defrosting being needed to be switched to defrosting operating mode, then the defrosting medium in heat storage tank 14 passes sequentially through defrosting circulation
Pump (A mouthfuls and B mouthfuls conductings at this time), the thermal-arrest pipeline of solar panel 10, the first triple valve 13 of the 12, second triple valve 11
(at this time A mouthfuls and B mouthful conducting), defrosting feed flow main line 101, input triple valve 17 (being connected at this time with C mouthfuls for A mouthful), air-cooler 15
Liquid main line 102 is gone back in cooling line, output triple valve 16 (A mouthfuls and C mouthfuls conductings at this time), defrosting, finally returns heat storage tank 14, real
The defrosting work of existing air-cooler 15.
When night solar panel 10 does not work, and when a certain air-cooler 15 needs defrosting in freezer, heat storage tank
14 defrosting medium passes sequentially through defrosting circulating pump 12, the second triple valve 11 (A mouthfuls and C mouthfuls conductings at this time), defrosting feed flow main line
101, triple valve 17 (A mouthfuls and C mouthfuls conductings at this time), the cooling line of air-cooler 15, (A mouthfuls and C at this time of triple valve 16 of output are inputted
Mouthful conducting), defrosting go back to liquid main line 102, finally return heat storage tank 14, complete the defrosting operation to air-cooler 15, other cold wind
Machine 15 can work in refrigeration work mode,
Night when 6 cold storage capacities of cold-accumulating box are not able to satisfy freezer refrigerating requirement, using power grid electric energy to refrigeration cycle
System power supply, it can be achieved that refrigeration system continuous cooling, to guarantee the stabilization of temperature of ice house.Meanwhile according to meteorological data pair
Solar panel 10 can be provided electric energy and be predicted second day daytime, under bad working environments, when solar panel 10 not
When the enough electricity of energy offer meet freezer refrigeration duty, cold-storage can be carried out to cold-accumulating box 6 using night trough-electricity in advance, to meet
Second day freezer demand.
Embodiment described above is merely to illustrate technical idea and feature of the invention, in the art its object is to make
Technical staff it will be appreciated that the contents of the present invention and implement accordingly, patent model of the invention only cannot be limited with the present embodiment
It encloses, i.e., same changes or modifications made by all disclosed spirit are still fallen in the scope of the patents of the invention.
Claims (10)
1. a kind of cold storage refrigerating system based on solar energy PV/T technology, which is characterized in that including solar energy PV/T system, refrigeration
The circulatory system and defrosting system for the cooling cycle system defrosting；Described in the solar energy PV/T system output electric energy supply
Cooling cycle system；The cooling cycle system is equipped with several defrosting pipelines, and the solar energy PV/T system is equipped with heat collector,
The heat collector exports the defrosting medium for transmitting thermal energy by the defrosting system to the defrosting pipeline；The defrosting is situated between
Mass flow returns to the heat collector after the defrosting pipeline.
2. the cold storage refrigerating system according to claim 1 based on solar energy PV/T technology, which is characterized in that the sun
Energy PV/T system includes the solar panel, battery and inverter being sequentially connected electrically；The inverter output electric energy supply
The cooling cycle system；The heat collector is plate-type collector, is equipped with thermal-arrest pipeline at the solar panel back.
3. the cold storage refrigerating system according to claim 1 based on solar energy PV/T technology, which is characterized in that the defrosting
System includes that liquid main line is gone back in heat storage tank, defrosting circulating pump, defrosting feed flow main line and defrosting；The liquid outlet of the heat storage tank with it is described
The input port of defrosting circulating pump is connected to；The delivery outlet of the defrosting circulating pump is connected to the defeated population of the heat collector；The collection
The delivery outlet of hot device is connected to defrosting feed flow main line；The first accumulation of heat feed liquor on liquid main line and the heat storage tank is returned in the defrosting
Mouth connection；The input port of the defrosting pipeline is connected to defrosting feed flow main line；The delivery outlet of the defrosting pipeline with it is described
The connection of liquid main line is returned in defrosting.
4. the cold storage refrigerating system according to claim 3 based on solar energy PV/T technology, which is characterized in that the defrosting
System further includes the first triple valve；The import A of first triple valve is connected to the delivery outlet of the heat collector；Described 1st
The outlet B of port valve is connected to defrosting feed flow main line；The second accumulation of heat of the outlet C and the heat storage tank of first triple valve
Inlet connection.
5. the cold storage refrigerating system according to claim 3 based on solar energy PV/T technology, which is characterized in that the defrosting
System further includes the second triple valve；The import A of second triple valve is connected to the delivery outlet of the defrosting circulating pump；Described
The outlet B of two triple valves is connected to the defeated population of the heat collector；The outlet C of second triple valve and the defrosting feed flow are dry
Road connection.
6. the cold storage refrigerating system according to claim 1 based on solar energy PV/T technology, which is characterized in that the refrigeration
The circulatory system includes compressor, condenser, evaporator, cooling feed flow main line, cools back liquid main line and several air-coolers；Each
The air-cooler is equipped with a cooling line, and the input port of each cooling line is connected to the cooling feed flow main line；
The delivery outlet of each cooling line is connected to the liquid main line that cools back；The evaporator include cooling medium channel and by
Cooling medium channel；The cooling medium channel of the evaporator, the compressor and the condenser are sequentially communicated to form cooling
The circulation loop of medium；Cooled medium is exported from the delivery outlet in the cooled medium channel, and followed by the cooling
Feed flow main line, the cooling line and it is described cool back liquid main line after, be input to the input port in the cooled medium channel.
7. the cold storage refrigerating system according to claim 6 based on solar energy PV/T technology, which is characterized in that the refrigeration
The circulatory system further includes cold-accumulating box, the first coolant circulation pump and the second coolant circulation pump, the cold-accumulating box be equipped with the first cold-storage into
Liquid mouth, the second cold-storage inlet, the first cold-storage liquid outlet and the second cold-storage liquid outlet；The first cold-storage liquid outlet is through described
One coolant circulation pump is connected to the defeated population in the cooled medium channel of the evaporator；The first cold-storage inlet with it is described
The delivery outlet in the cooled medium channel of evaporator is connected to；The second cold-storage liquid outlet is through second coolant circulation pump and institute
State cooling feed flow main line connection；The second cold-storage inlet is connected to the liquid main line that cools back.
8. the cold storage refrigerating system according to claim 7 based on solar energy PV/T technology, which is characterized in that each described
Air-cooler is additionally provided with the defrosting pipeline, and the cooling line and defrosting pipeline of the same air-cooler are same pipeline；
The cooled medium is identical with the defrosting medium；The input port of each cooling line is equipped with input triple valve, described
The import A of input triple valve is connected to the input port of the cooling line, the outlet B of the input triple valve and the cooling confession
The outlet C of the connection of liquid main line, the input triple valve is connected to defrosting feed flow main line；The output of each cooling line
Mouth is equipped with output triple valve, and the import A of the output triple valve is connected to the delivery outlet of the cooling line, the output threeway
The outlet B of valve is connected to the liquid main line that cools back, and the outlet C of the output triple valve goes back to liquid main line with the defrosting and is connected to.
9. a kind of working method of the cold storage refrigerating system based on solar energy PV/T technology, which is characterized in that this method are as follows: will too
The electric energy that positive energy solar panel generates supplies cooling cycle system, and the thermal energy generated when solar panel is worked passes through heat collector
It absorbs, and by the defrosting medium for transmitting thermal energy, transmits thermal energy into several defrosting pipelines of cooling cycle system, melt
White medium carries out heat exchange in defrosting pipeline, is then return to heat collector.
10. the working method of the cold storage refrigerating system according to claim 9 based on solar energy PV/T technology, feature exist
In, after the heat absorption generated when solar panel is worked by heat storage tank store, controlled by valve, filled in sunlight
Foot and when cooling cycle system needs defrosting, is delivered to the thermal energy of heat collector in the defrosting pipeline of cooling cycle system；Too
When sunny and cooling cycle system does not need defrosting, the thermal energy of heat collector is made to be delivered to heat storage tank；It is insufficient in sunlight and
When cooling cycle system needs defrosting, it is delivered to the thermal energy of heat storage tank in the defrosting pipeline of cooling cycle system.
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