CN102519168A - Solar vegetable production distribution base combination system - Google Patents
Solar vegetable production distribution base combination system Download PDFInfo
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- CN102519168A CN102519168A CN201110432883XA CN201110432883A CN102519168A CN 102519168 A CN102519168 A CN 102519168A CN 201110432883X A CN201110432883X A CN 201110432883XA CN 201110432883 A CN201110432883 A CN 201110432883A CN 102519168 A CN102519168 A CN 102519168A
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Abstract
The invention discloses a solar vegetable production distribution base combination system, which aims at replacing conventional energy with a solar auxiliary heat source part, uses natural working medium water and CO2 as circulating working media, and integrates planting, after-picking treatment and fresh-training processing. The combination system comprises a solar heat collection cycle, a steam ejecting refrigerating cycle, a CO2 refrigerating cycle, a vegetable-planting greenhouse heat supplying cycle, a selecting cleaning room cycle and a steam blanching cycle. The solar heat collection cycle is composed of a solar heat collector, a heat accumulator and a second water pump. The steam ejecting refrigerating cycle is composed of a first ejector, a second ejector, an evaporation heat exchanger, a generator, an evaporator, a heat exchanger, a first expansion valve, a second expansion valve and a fifth water pump. The CO2 refrigerating cycle comprises an evaporation heat exchanger, a refrigerating compressor, a first thermal expansion valve, a second thermal expansion valve, a third thermal expansion valve, a first air cooler, a second air cooler and a third air cooler. The vegetable-planting greenhouse heat supplying cycle is composed of a heat exchanger, a first stop valve, a heat supplier and a first water pump.
Description
Technical field
The present invention relates to a kind of vegetables and produce dispensing base combined system, in particular, the combined system of relate to a kind ofly to collect plantation, adopt post processing, the fresh-keeping vegetables that are machined in one producing the base of providing and delivering.
Background technology
China is that vegetable species is maximum in the world, the country that cultivated area is maximum.Along with China's rapid economy development; Improving constantly of people's living standard; People's diet by simply having adequate food and clothing to the auxotype transition; Need the fresh vegetables of many kinds on the dining table throughout the year, demand, the consumption figure of fresh vegetables increase substantially, and what adapt with the society of modernization, fast pace, culturally advanced prosperity should be that the dispensing base is produced in development batch production, scale, standardized vegetables.Heating, the vegetables that booth need be planted in the base are adopted heat supply, Refrigeration Techniques such as back precooling, refrigeration or cold storage is fresh-keeping.The depletion of the ozone layer that the artificial synthetic refrigeration of traditional chloro-fluoro-carbon kind, heat supply cycle fluid cause and the greenhouse effects of generation; Become increasingly serious global environment problem; Exploitation natural refrigerant new equipment and new technology are preserved the ecological environment, and practice thrift natural resources; Get along with natural harmony, realize that the sustainable development of agricultural has important practical significance.Solar energy cleaning, pollution-free, renewable is a most important basic power source in the various regenerative resources, also is the human the abundantest available energy.Utilize solar-assisted heat source part to substitute conventional energy resource, natural refrigerant water and CO
2For post processing, the fresh-keeping combined system that is machined in the vegetables production dispensing base of one are planted, adopted to the collection of cycle fluid; Can realize the vegetables industry modernization; Solve China's vegetables anniversary stable market supply, energy savings, protection environment, but do not see that relevant report is arranged at present.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, to provide a kind of solar-assisted heat source part of utilizing to substitute conventional energy resource, natural refrigerant water and CO
2Plant, adopt post processing, the fresh-keeping one that is machined in for the collection of cycle fluid, be convenient to management, easy to operate, the protection environment, the vegetables of energy savings produce the combined system in dispensing base.
The present invention realizes through following technical proposals:
A kind of solar energy vegetables produce dispensing base combined system, it is characterized in that, comprise solar energy heating circulation, water vapour jet refrigeration circulation, CO
2Kind of refrigeration cycle, the heat supply of growing vegetables booth circulate, select cleaning shop circulation and steam blanching circulation;
Said solar energy heating circulation is made up of solar thermal collector, storage heater and second water pump; The outlet of said solar thermal collector is taken over first of storage heater and is connected; The 4th of storage heater is taken over and is connected with the inlet of second water pump, and the outlet of second water pump is connected with the inlet of solar thermal collector;
Said water vapour jet refrigeration circulation is made up of first injector, second injector, evaporating heat exchanger, generator, evaporimeter, heat exchanger, first expansion valve, second expansion valve, the 5th water pump; The inlet connection of said first injector is taken over the 6th of generator and is connected; The injection of first injector is taken over and is connected with the discharge connection of evaporimeter; The discharge connection of said first injector is connected with the inlet connection of said second injector; The injection of second injector is taken over and is connected with the discharge connection of evaporating heat exchanger; The discharge connection of second injector is taken over the 3rd of said heat exchanger and is connected, and second of said heat exchanger is taken over and is divided into three the tunnel, and first expansion valve of leading up to is connected with the inlet of evaporimeter; Second expansion valve of leading up to is taken over second of evaporating heat exchanger and is connected, and the 5th water pump of leading up to is taken over first of generator and is connected;
Said CO
2Kind of refrigeration cycle is made up of said evaporating heat exchanger, refrigeration compressor, first heating power expansion valve, second heating power expansion valve, the 3rd heating power expansion valve, first air-cooler, second air-cooler, the 3rd air-cooler and first check valve, second check valve; The outlet of said refrigeration compressor is taken over the 5th of evaporating heat exchanger and is connected; The 6th of evaporating heat exchanger is taken over and is divided into three the tunnel; First heating power expansion valve of leading up to is connected with first air-cooler inlet; Second heating power expansion valve of leading up to is connected with second air-cooler inlet, and the 3rd heating power expansion valve of leading up to is connected with the 3rd air-cooler inlet, and the outlet of first air-cooler is connected with the inlet of first check valve; The outlet of second air-cooler is connected with the inlet of second check valve, is connected with the inlet of refrigeration compressor after the outlet of the outlet of first check valve, second check valve and the outlet parallel connection of the 3rd air-cooler;
Said growing vegetables booth heat supply circulation is made up of said heat exchanger, first stop valve, heater, first water pump; The 6th of said heat exchanger is taken over through first water pump and is connected with the inlet of said heater, and the outlet of said heater is taken over the 4th of said heat exchanger through first stop valve and is connected;
Said select that cleaning shop circulation comprises the said Winter heat supply circulation of being made up of heat exchanger, second stop valve, indoor heat converter, the 4th water pump and circulate by the summer cooling that the 3rd stop valve, said evaporating heat exchanger, the 4th water pump, indoor heat converter are formed form; The outlet of said indoor heat converter is leaded up to the 5th of second stop valve and heat exchanger and is taken over and be connected; The 3rd stop valve of leading up to is taken over the 4th of evaporating heat exchanger and is connected, and the 3rd of evaporating heat exchanger is taken over the first adapter parallel connection back of heat exchanger and is connected with the inlet of indoor heat converter through the 4th water pump;
Said steam blanching circulation is made up of steam pump, said generator, steam blanching pond, and the 4th of said generator is taken over through steam pump and is connected with the inlet in steam blanching pond, and the outlet in steam blanching pond is taken over second of generator and is connected;
The 3rd of said generator is taken over through the 3rd water pump and is connected with the 3rd adapter of storage heater, and second of storage heater is taken over the 5th adapter of generator and is connected.
Be provided with temperature sensor and auxiliary heater in the said generator, said temperature sensor is connected with the input of temperature controller, and the control output end of said temperature controller is connected with the power control terminal of said auxiliary heater.
Said steam jet refrigeration circulation is a cycle fluid with water.
It is cycle fluid with water that said solar energy heating circulation, the heat supply of growing vegetables booth circulate, select the cleaning shop circulation.
Said steam blanching circulation is a cycle fluid with the water vapour.
The present invention has following technique effect:
1, solar energy vegetables of the present invention produce dispensing base combined system, utilize solar-assisted heat source part to substitute conventional energy resource, with natural refrigerant water and CO
2Be cycle fluid, select for growing vegetables, after adopting, the place, space of cleaning, precooling, packing, refrigeration (or quick-frozen and cold storage) link provides required suitable temperature environment, energy savings, the protection environment satisfies the requirement of environmental protection and food hygiene.
2, solar energy vegetables of the present invention to produce dispensing base combined system collection refrigeration, heat supply and heat supply water be that the multi-functional environmental protection of one, energy-saving vegetables produce dispensing base combined system; Be convenient to management, practice thrift cost, environmental protection and energy saving; Convenient control, safe and reliable.
Description of drawings
Fig. 1 produces the sketch map of dispensing base combined system for solar energy vegetables of the present invention;
Fig. 2 is the adapter sketch map of evaporating heat exchanger of the present invention;
Fig. 3 is the adapter sketch map of storage heater of the present invention;
Fig. 4 is the adapter sketch map of generator of the present invention;
Fig. 5 is the adapter sketch map of heat exchanger of the present invention;
Fig. 6 is the adapter sketch map of the present invention's first injector;
Fig. 7 is the adapter sketch map of the present invention's second injector.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
The sketch map of solar energy vegetables production dispensing of the present invention base combined system such as Fig. 1-shown in Figure 7, comprise solar energy heating circulation, water vapour jet refrigeration circulation, CO
2Kind of refrigeration cycle, the heat supply of growing vegetables booth circulate, select cleaning shop circulation and steam blanching circulation.
Said solar energy heating circulation is made up of solar thermal collector 1, storage heater 2 and second water pump 13.First of the outlet of said solar thermal collector 1 and storage heater 2 taken over 47 and is connected, and the 4th adapter 50 of storage heater 2 is connected with the inlet of second water pump 13, and the outlet of second water pump 13 is connected with the inlet of solar thermal collector 1.
Said water vapour jet refrigeration circulation is made up of first injector 15, second injector 16, evaporating heat exchanger 32, generator 26, evaporimeter 3, heat exchanger 29, first expansion valve 17, second expansion valve 28, the 5th water pump 27.Said first injector 15 and second injector 16 adopt the emitter construction of the routine of being made up of nozzle, mixing chamber and diffuser.The inlet connection 66 of said first injector 15 is taken over 56 with the 6th of generator 26 and is connected; The injection of first injector 15 is taken over 67 and is connected with the discharge connection of evaporimeter 3; The discharge connection 63 of said first injector 15 is connected with the inlet connection 71 of said second injector 16; The injection of second injector 16 is taken over 70 and is connected with the discharge connection 41 of evaporating heat exchanger 32; The discharge connection 69 of second injector 16 is taken over 59 with the 3rd of said heat exchanger 29 and is connected, and second of heat exchanger 29 is taken over 58 and is divided into three the tunnel, and first expansion valve 17 of leading up to is connected with the inlet of evaporimeter 3; Second expansion valve 28 of leading up to is taken over 42 with second of evaporating heat exchanger 32 and is connected, and the 5th water pump 27 of leading up to is taken over 51 with first of generator 26 and is connected.
Said CO
2Kind of refrigeration cycle is made up of evaporating heat exchanger 32, refrigeration compressor 31, first heating power expansion valve 22, second heating power expansion valve 23, the 3rd heating power expansion valve 24, first air-cooler 8, second air-cooler 9, the 3rd air-cooler 10 and first check valve 20, second check valve 21.The outlet of said refrigeration compressor 31 is taken over 45 with the 5th of evaporating heat exchanger 32 and is connected; The 6th of evaporating heat exchanger 32 is taken over 46 and is divided into three the tunnel; First heating power expansion valve 22 of leading up to is connected with first air-cooler, 8 inlets; Second heating power expansion valve 23 of leading up to is connected with second air-cooler, 9 inlets, and the 3rd heating power expansion valve 24 of leading up to is connected with the 3rd air-cooler 10 inlets, and the outlet of first air-cooler 8 is connected with first check valve, 20 inlets; The outlet of second air-cooler 9 is connected with the inlet of second check valve 21, is connected with the inlet of refrigeration compressor 31 after the outlet parallel connection of the outlet of the outlet of first check valve 20, second check valve 21 and the 3rd air-cooler 10.
Said growing vegetables booth heat supply circulation is made up of heat exchanger 29, first stop valve 4, heater 5, first water pump 6.The 6th adapter 62 of said heat exchanger 29 is connected with the inlet of heater 5 through first water pump 6, and the outlet of heater 5 is taken over 60 through first stop valve 4 with the 4th of heat exchanger 29 and is connected.
Said select that cleaning shop circulation comprises the Winter heat supply circulation is made up of heat exchanger 29, second stop valve 18, indoor heat converter 7, the 4th water pump 19 and circulate by the summer cooling that the 3rd stop valve 30, evaporating heat exchanger 32, the 4th water pump 19, indoor heat converter 7 are formed form.The outlet of indoor heat converter 7 is leaded up to the 5th of second stop valve 18 and heat exchanger 29 and is taken over 61 and be connected; The 3rd stop valve 30 of leading up to is taken over 44 with the 4th of evaporating heat exchanger 32 and is connected, and the 3rd adapter 43 of evaporating heat exchanger 32 is taken over 57 parallel connection backs with first of heat exchanger 29 and is connected with the inlet of indoor heat converter 7 through the 4th water pump 19.
Said steam blanching circulation is made up of steam pump 12, generator 26, steam blanching pond 11.The 4th adapter 54 of said generator 26 is connected with the inlet in steam blanching pond 11 through steam pump 12, and the outlet in steam blanching pond 11 is taken over 52 with second of generator 26 and is connected.
The 3rd adapter 53 of said generator 26 is taken over 49 through the 3rd water pump 14 with the 3rd of storage heater 2 and is connected, and second adapter 48 of storage heater 2 is taken over 55 with the 5th of generator 26 and is connected.
Be provided with temperature sensor and auxiliary heater 25 in the said generator 26, said temperature sensor is connected with the input of temperature controller, and the control output end of said temperature controller is connected with the power control terminal of auxiliary heater 25.By the water temperature in the temperature sensor measurement generator 26 and send temperature controller to, by the keying of temperature controller control auxiliary heater 25.
Said steam jet refrigeration circulation is a cycle fluid with water.
It is cycle fluid with water that said solar energy heating circulation, the heat supply of growing vegetables booth circulate, select the cleaning shop circulation.
Said steam blanching circulation is a cycle fluid with the water vapour.
Start second water pump 13, through the driving of second water pump 13, water absorbs solar energy in solar thermal collector 1, and the hot water that temperature raises is got back in the storage heater 2.Hot water under the driving of the 3rd water pump 14 in the storage heater 2 gets into generator 26; Temperature sensor is experienced the water temperature in the generator; If water temperature is lower than needed value, then temperature sensor sends the temperature controller signal to, and the auxiliary heater of being controlled by temperature controller 25 heats automatically; When reaching required temperature, the auxiliary heater automatic disconnection stops heating.
The part high-temperature high-pressure steam on generator 26 tops expands through the nozzle in first injector 15 64 and with flow at high speed, causes very low pressure at nozzle exit, because of the rate of outflow is high, pressure is low; Attract the low pressure water vapor that evaporation generates in the evaporimeter 3, get into the mixing chamber 65 of first injector 15, get into diffuser 68 after the vapor mixing in mixing chamber; Flow velocity reduces in diffuser, pressure raises that nozzle 72 that the back gets into second injector 16 expands and with flow at high speed; Cause very low pressure at nozzle exit,, attract the low-pressure steam that evaporation generates in the evaporating heat exchanger 32 because of the rate of outflow is high, pressure is low; Get into the mixing chamber 73 of second injector 16; Steam in mixing chamber gets into diffuser 74 after mixing, and flow velocity reduces in diffuser, the pressure back that raises gets into heat exchanger 29, heat exchanger 29 in pipe outside water carry out the heat exchange temperature reduction; Condense into liquid water; One the tunnel after first expansion valve 17 dams step-down, gets into evaporimeter 3, for the fore-cooling room 40 in the precooling room 33 produces cold water low-temperature receiver is provided; Another road gets into evaporating heat exchanger 32 after second expansion valve 28 dams step-down, be CO
2The CO that refrigeration compressor 31 is discharged in the kind of refrigeration cycle
2The cooling of gas, condensation heat provide low-temperature receiver; Third Road is got back to generator 26 through the 5th water pump 27 and is formed the water vapour jet refrigeration circulation.
The CO that comes out from refrigeration compressor 31
2Gas, in evaporating heat exchanger 32 with heat exchanger tube outside cold water carry out heat exchange, emit heat and condense into CO
2Liquid; Respectively after first heating power expansion valve 22, second heating power expansion valve 23 and the 3rd heating power expansion valve 24 dam step-down; One the tunnel gets into first air-cooler 8 in the quick-freezing room 36; One the tunnel gets in the 3rd air-cooler 10 that the 37 second interior air-coolers 9, a tunnel get in the refrigerator 38 between cold storage, absorbs the CO that heat of vaporization produces
2Gas is got back to refrigeration compressor, between quick-freezing room, cold storage and refrigerator low-temperature receiver is provided, accomplish CO
2Kind of refrigeration cycle, first check valve 20, second check valve 21 the flowing of cold-producing medium between the different loop of pressure that can avoid evaporating.
Under the driving of first water pump 6, in heat exchanger 29, absorb the hot water that the heat temperature raises, through first stop valve, 4 control flows, in heater 5, emit heat, for the green house of vegetables 34 of the different growth temperature environment of demand provides suitable temperature space.
In the winter time; Need heat supply when heating when selecting cleaning shop 35; Close the 3rd stop valve 30, open second stop valve 18, under the driving of the 4th water pump 19; The hot water that temperature raises behind the absorption heat in heat exchanger 29 gets into indoor heat converters 7 through second stop valve 18 and emits heat, for selecting the heating of cleaning shop 35 Winter heat supplies thermal source is provided.
In summer; When selecting cleaning shop 35 and need cooling; Open the 3rd stop valve 30, close second stop valve 18, under the driving of the 4th water pump 19; In evaporating heat exchanger 32, emit the cold water that the heat temperature reduces, in indoor heat converter 7, absorbing heat through 30 entering of the 3rd stop valve provides low-temperature receiver for selecting cleaning shop 35 summer coolings.
When vegetables are handled in the needs blanching; Start steam pump 12; The part high-temperature steam on generator 26 tops is transported under the effect of steam pump 12 between blanching and in the steam blanching pond 11 in 39 vegetables is heated blanching and handle, and the steam that temperature reduces is got back to the high-temperature steam blanching circulation of accomplishing vegetables in the generator.Vegetables through the short time blanching is handled are taken out rapidly, send into the precooling room processing of lowering the temperature.
Vegetables produce the dispensing base and adopt central heating; Temperature, humidity environment needs according to the different cultivars vegetable growth; Suitable temperature and humidity is provided, has the cleaning selected, blanching processing, cold water precooling, vegetables quick-frozen, vegetables cold storage, each link of vegetable cold storing simultaneously, the vegetables of seeing off get into the shelf in supermarket; The fresh vegetables that meets food hygienic standard fully is provided to the consumer; The consumer buys back and inserts refrigerator, can take out the direct cooking when edible, significantly reduces municipal refuse, environmental pollution and repeats transportation; Satisfy time saving and energy saving, the allegro life style requirement of consumer.
Claims (5)
1. solar energy vegetables produce dispensing base combined system, it is characterized in that, comprise solar energy heating circulation, water vapour jet refrigeration circulation, CO
2Kind of refrigeration cycle, the heat supply of growing vegetables booth circulate, select cleaning shop circulation and steam blanching circulation;
Said solar energy heating circulation is made up of solar thermal collector, storage heater and second water pump; The outlet of said solar thermal collector is taken over first of storage heater and is connected; The 4th of storage heater is taken over and is connected with the inlet of second water pump, and the outlet of second water pump is connected with the inlet of solar thermal collector;
Said water vapour jet refrigeration circulation is made up of first injector, second injector, evaporating heat exchanger, generator, evaporimeter, heat exchanger, first expansion valve, second expansion valve, the 5th water pump; The inlet connection of said first injector is taken over the 6th of generator and is connected; The injection of first injector is taken over and is connected with the discharge connection of evaporimeter; The discharge connection of said first injector is connected with the inlet connection of said second injector; The injection of second injector is taken over and is connected with the discharge connection of evaporating heat exchanger; The discharge connection of second injector is taken over the 3rd of said heat exchanger and is connected, and second of said heat exchanger is taken over and is divided into three the tunnel, and first expansion valve of leading up to is connected with the inlet of evaporimeter; Second expansion valve of leading up to is taken over second of evaporating heat exchanger and is connected, and the 5th water pump of leading up to is taken over first of generator and is connected;
Said CO
2Kind of refrigeration cycle is made up of said evaporating heat exchanger, refrigeration compressor, first heating power expansion valve, second heating power expansion valve, the 3rd heating power expansion valve, first air-cooler, second air-cooler, the 3rd air-cooler and first check valve, second check valve; The outlet of said refrigeration compressor is taken over the 5th of evaporating heat exchanger and is connected; The 6th of evaporating heat exchanger is taken over and is divided into three the tunnel; First heating power expansion valve of leading up to is connected with first air-cooler inlet; Second heating power expansion valve of leading up to is connected with second air-cooler inlet, and the 3rd heating power expansion valve of leading up to is connected with the 3rd air-cooler inlet, and the outlet of first air-cooler is connected with the inlet of first check valve; The outlet of second air-cooler is connected with the inlet of second check valve, is connected with the inlet of refrigeration compressor after the outlet of the outlet of first check valve, second check valve and the outlet parallel connection of the 3rd air-cooler;
Said growing vegetables booth heat supply circulation is made up of said heat exchanger, first stop valve, heater, first water pump; The 6th of said heat exchanger is taken over through first water pump and is connected with the inlet of said heater, and the outlet of said heater is taken over the 4th of said heat exchanger through first stop valve and is connected;
Said select that cleaning shop circulation comprises the said Winter heat supply circulation of being made up of heat exchanger, second stop valve, indoor heat converter, the 4th water pump and circulate by the summer cooling that the 3rd stop valve, said evaporating heat exchanger, the 4th water pump, indoor heat converter are formed form; The outlet of said indoor heat converter is leaded up to the 5th of second stop valve and heat exchanger and is taken over and be connected; The 3rd stop valve of leading up to is taken over the 4th of evaporating heat exchanger and is connected, and the 3rd of evaporating heat exchanger is taken over the first adapter parallel connection back of heat exchanger and is connected with the inlet of indoor heat converter through the 4th water pump;
Said steam blanching circulation is made up of steam pump, said generator, steam blanching pond, and the 4th of said generator is taken over through steam pump and is connected with the inlet in steam blanching pond, and the outlet in steam blanching pond is taken over second of generator and is connected;
The 3rd of said generator is taken over through the 3rd water pump and is connected with the 3rd adapter of storage heater, and second of storage heater is taken over the 5th adapter of generator and is connected.
2. solar energy vegetables according to claim 1 produce dispensing base combined system; It is characterized in that; Be provided with temperature sensor and auxiliary heater in the said generator; Said temperature sensor is connected with the input of temperature controller, and the control output end of said temperature controller is connected with the power control terminal of said auxiliary heater.
3. solar energy vegetables according to claim 1 produce dispensing base combined system, it is characterized in that, said steam jet refrigeration circulation is a cycle fluid with water.
4. solar energy vegetables according to claim 1 produce dispensing base combined system, it is characterized in that, it is cycle fluid with water that said solar energy heating circulation, the heat supply of growing vegetables booth circulate, select the cleaning shop circulation.
5. solar energy vegetables according to claim 1 produce dispensing base combined system, it is characterized in that, said steam blanching circulation is a cycle fluid with the water vapour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110432883 CN102519168B (en) | 2011-12-21 | 2011-12-21 | Solar vegetable production distribution base combination system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110432883 CN102519168B (en) | 2011-12-21 | 2011-12-21 | Solar vegetable production distribution base combination system |
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| CN102519168A true CN102519168A (en) | 2012-06-27 |
| CN102519168B CN102519168B (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110432883 Expired - Fee Related CN102519168B (en) | 2011-12-21 | 2011-12-21 | Solar vegetable production distribution base combination system |
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| CN103430795A (en) * | 2013-09-10 | 2013-12-11 | 山东宏力空调设备有限公司 | Facility agriculture heat pump system |
| CN104431847A (en) * | 2014-12-01 | 2015-03-25 | 河北明光食品有限公司 | Air bubble washing, blanching, selecting and conveying all-in-one machine |
| CN111189249A (en) * | 2020-02-09 | 2020-05-22 | 中科碳冷(无锡)高科技有限公司 | Heat pump combined cooling and heating system for food processing and corresponding food processing method |
| CN112801633A (en) * | 2021-03-01 | 2021-05-14 | 重庆中沃科技有限公司 | Energy management system with multi-stage cooperative function |
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| Publication number | Publication date |
|---|---|
| CN102519168B (en) | 2013-08-07 |
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