CN113251469A - Multi-section waste heat recovery heat supply oxygen generating unit - Google Patents
Multi-section waste heat recovery heat supply oxygen generating unit Download PDFInfo
- Publication number
- CN113251469A CN113251469A CN202110517227.3A CN202110517227A CN113251469A CN 113251469 A CN113251469 A CN 113251469A CN 202110517227 A CN202110517227 A CN 202110517227A CN 113251469 A CN113251469 A CN 113251469A
- Authority
- CN
- China
- Prior art keywords
- valve
- heat
- pressure
- oxygen
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 119
- 239000001301 oxygen Substances 0.000 title claims abstract description 119
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 119
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 claims abstract description 50
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 16
- 239000003507 refrigerant Substances 0.000 claims description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- 230000003584 silencer Effects 0.000 claims description 10
- 206010021143 Hypoxia Diseases 0.000 abstract description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 206010067484 Adverse reaction Diseases 0.000 abstract description 2
- 230000006838 adverse reaction Effects 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 206010002660 Anoxia Diseases 0.000 description 2
- 241000976983 Anoxia Species 0.000 description 2
- 230000007953 anoxia Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010008479 Chest Pain Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000027906 leg weakness Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a multi-section waste heat recovery heat supply oxygen generating unit which comprises an oxygen generating module, a heating module and an auxiliary heat source module, wherein the oxygen generating module comprises an air compressor, a multi-stage high-pressure filter, three heat exchangers, a pressure stabilizing tank, two adsorption towers, an oxygen storage tank and a humidification bottle; the rear part of the air compressor is connected with a multi-stage high-pressure filter, a three-phase heat exchanger and a pressure stabilizing tank; a stop valve and an electromagnetic valve are arranged between the pressure stabilizing tank and the parallel adsorption towers; a pressure equalizing valve and two throttle valves are arranged between the two adsorption towers and the gas storage tank; a one-way valve is arranged between the throttling valve and the air storage tank, and a pressure limiting valve and a flowmeter are arranged between the air storage tank and the humidification bottle; the heating module is connected with the oxygen generation module. The invention fully combines the oxygen generation system and the heat pump system, can supply oxygen, humidify and heat simultaneously, can reduce adverse reactions brought to people in high-altitude areas due to low pressure and oxygen deficiency, cold drying and the like, reduces energy dissipation, realizes heat recovery and utilization, and meets the actual requirements of high-altitude areas.
Description
Technical Field
The invention belongs to a heat supply oxygen generating unit, and particularly relates to a multi-section waste heat recovery heat supply oxygen generating unit.
Background
In high altitude areas, due to the elevation rise and the reduction of atmospheric pressure, plateau climates with obvious characteristics of oxygen deficiency, low temperature, strong wind, dryness and the like are formed. Aiming at the indoor environment of a high-altitude area, the relative humidity of the indoor environment needs to be improved while the thermal comfort of personnel is ensured, and the requirement of the personnel on oxygen is met. Traditional oxygen supply unit can only realize the oxygen suppliment to the indoor environment of high altitude through methods such as pressure swing adsorption, membrane separation, but can't realize to indoor heating, humidification, solve indoor dry problem, consequently can't satisfy personnel to the comfortable demand of indoor environment.
In a high altitude area, the climate change is very fast, even extreme weather can occur, but the calculation of the heat load does not guarantee the extreme weather, when the weather is very cold, the heat supplied by the air conditioner is insufficient, at this time, an auxiliary heat source needs to be added, and the common auxiliary heat source is mainly an electric heating heat source, so that the energy consumption is high.
In addition, the residual heat of the oxygen generator set module at the air compressor part is not fully utilized, and the heat of the compressed high-temperature and high-pressure air can be recycled in the cooling and dehumidifying process. In conclusion, the problems that waste heat recovery of the oxygen generating unit is carried out, cop of the unit is improved, and requirements of personnel in high altitude areas on indoor environment are met are all needed to be solved at present.
Disclosure of Invention
The invention aims to provide a multi-section waste heat recovery heat supply oxygen generating unit, aiming at the problems that the existing oxygen generating unit can not realize indoor heating and humidification and the waste heat of an air compressor part is not fully utilized.
In order to achieve the purpose, the invention adopts the following technical scheme to solve the problem:
the utility model provides a multistage waste heat recovery heat supply oxygenerator group, includes system oxygen module, heating module and auxiliary heat source module, wherein:
the oxygen generation module comprises an air compressor, a multistage high-pressure filter, three heat exchangers, a pressure stabilizing tank, two adsorption towers, an oxygen storage tank and a humidification bottle; the air compressor is sequentially connected with a high-pressure filter, three heat exchangers and a pressure stabilizing tank, and a second pressure gauge, a thermometer and a check valve are sequentially arranged on a pipeline between the three loose heat exchangers and the pressure stabilizing tank; a stop valve and an electromagnetic valve are sequentially arranged on a pipeline between the pressure stabilizing tank and the two parallel adsorption towers, and the two adsorption towers and the silencer are respectively connected after the electromagnetic valve is discharged; a pressure equalizing valve and two throttle valves are connected in parallel between the two parallel adsorption towers and the oxygen storage tank in sequence; a one-way valve is arranged between the throttling valve and the air storage tank, and a pressure limiting valve and a flow meter are arranged between the air storage tank and the humidification bottle 23;
the heating module is respectively connected with an air compressor, three heat exchangers and a humidification bottle in the oxygen generation module;
the auxiliary heat source module is connected with a silencer, an indoor heat exchanger and three heat exchangers in the oxygen generation module.
Further, the heating module comprises an air compressor heat exchanger, a first pressure gauge, a refrigerant compressor, an indoor heat exchanger, a throttle valve, a third valve, a fourth valve and a fifth valve, wherein when the third valve and the fifth valve are closed, the fourth valve is opened, the heating module is of a serial structure, and the outlet end of the refrigerant compressor is sequentially connected with the indoor heat exchanger, the throttle valve, the three heat exchangers and the air compressor heat exchanger and finally connected to the inlet end of the refrigerant compressor; when the third valve and the fifth valve are opened, the fourth valve is closed, the heating module is of a parallel structure, the outlet end of the refrigerant compressor 6 is connected with the indoor heat exchanger 7 and the throttle valve 8, the three-way pipe behind the throttle valve 8 realizes the parallel connection of the three heat exchangers 4 and the air compressor heat exchanger 2, and the refrigerant is converged and then connected to the inlet end of the refrigerant compressor 6; the first pressure gauge 5 is arranged between the air compressor heat exchanger 2 and an inlet of the refrigerant compressor 6; the air compressor heat exchanger is arranged on a shell of the air compressor; the outlet of the flowmeter is connected with the inlet of the humidifying bottle after being communicated with the indoor heat exchanger.
Further, the auxiliary heat source module comprises a first valve and a second valve, wherein the first valve is arranged on a pipeline between the three-phase heat exchanger and the silencer, the second valve is arranged on a pipeline between the indoor heat exchanger and the silencer, and the first valve and the second valve are connected in parallel.
Further, the gas pressure of the high-temperature and high-pressure gas in the air compressor is 0.15-0.5 Mpa, and the gas outlet temperature is 20-30 ℃ higher than the ambient temperature.
Furthermore, the three heat exchangers comprise two groups of heat exchange fins which are arranged up and down and are connected in series, a box body is fixed on the side surface of each group of heat exchange fins respectively, and an axial flow fan is arranged in each box body.
Furthermore, each group of heat exchange fins adopts 2 rows and 10 rows of copper pipes which are longitudinally connected.
Further, the diameter of the copper pipe is 10mm, the distance between the pipes is 10mm, the center distance between the upper copper pipe and the lower copper pipe is 20mm, the distance between the first copper pipe and the edge of the heat exchange fin is 10mm, the distance between the first copper pipe and the second copper pipe is 10mm, and the distance between the second copper pipe and the edge of the heat exchange fin is 10 mm.
Furthermore, each group of heat exchange fins has the width of 200mm and the height of 200mm, the box bodies have the width of 200mm multiplied by 260mm multiplied by 200mm, and the distance between the two box bodies is 100 mm.
Further, the air volume of the axial flow fan is 155m3/h。
Further, the adsorption tower 16 is a pressure swing adsorption tower.
Compared with the prior art, the invention has the following advantages:
1. the oxygen generation module extracts oxygen from air, humidifies the oxygen and then introduces the oxygen into a room, so that the indoor oxygen concentration and humidity are improved, oxygen generation and heating can be realized, and the oxygen load and the heat load in the room are met. In the heating module, the indoor heat exchanger is used as a condenser and placed indoors to release heat so as to achieve the heating effect, the heat of the indoor heat exchanger is respectively released from heat release of the refrigerant, the air compressor heat exchanger absorbs heat energy generated by the air compressor, the three heat exchangers absorb heat of high-temperature and high-pressure air, and waste heat of the oxygen generation module is recovered. In conclusion, the unit fully combines the oxygen generation system with the heat pump system, can supply oxygen, humidify and heat simultaneously, can reduce adverse reactions brought to people in high-altitude areas due to low pressure, oxygen deficiency, cold, dryness and the like, reduces energy dissipation, realizes heat recovery and utilization, and meets the actual requirements of the high-altitude areas.
2. In the present invention, the exhaust gas (mainly nitrogen and other gases) from the adsorption tower 16 has certain kinetic energy and heat, and the part of the gas passes through the electromagnetic valve 14 and the muffler 15 in sequence and then is introduced into the three-phase heat exchanger 4. On one hand, the heat of the residual gas exhausted by the silencer 15 is fully utilized, and on the other hand, the kinetic energy of the gas is utilized to blow the three heat exchangers 4, so that the heat exchange in the heat exchange is enhanced. From the viewpoint of gas quality, the oxygen supply module has a high requirement on the water vapor content of the gas entering the adsorption tower 16, so that the water vapor in the air must be removed in advance, and therefore, the water vapor content of the gas exiting the adsorption tower 16 is very low. The residual gas is introduced into the three heat exchangers 4, so that the frosting problem of the three heat exchangers 4 can be reduced to a great extent, the energy dissipation is reduced, and the defrosting with zero energy consumption can be realized.
3. The invention can switch through the series-parallel connection structure of the single system of the heating module, meet the heat demand under different working conditions, improve the heat exchange efficiency of the system, and can adjust the resistance of the system operation, so that the system operation is more stable. In the invention, the three heat exchangers 4 and the air compressor heat exchanger 2 are taken as evaporators which respectively absorb the heat of high-temperature and high-pressure air and the heat generated by the compressor 1, and because the generated heat is different, the three heat exchangers 4 are taken as the main part and the air compressor heat exchanger 2 is taken as the auxiliary part in the series connection mode, therefore, on the arrangement sequence of the three heat exchangers 4 and the air compressor heat exchanger 2, refrigerant firstly passes through the three heat exchangers 4 and then passes through the air compressor heat exchanger 2. The arrangement has great advantages, as is known, the refrigerant in the refrigerant compressor is in a gas state, and exchanges heat with the air compressor 1 before the inlet of the compressor to reheat the refrigerant, so that the refrigerant is ensured to be in a gas state before entering the compressor 1, and the refrigerant compressor 6 is prevented from being damaged by liquid impact. In a parallel connection mode, the three heat exchangers 4 and the air compressor heat exchanger 2 are respectively arranged in two branch pipelines, the double evaporators do not need to be divided into a main evaporator and an auxiliary evaporator, and heat exchange is carried out simultaneously, and the parallel connection structure can ensure that the system resistance is small and the operation is more stable. Meanwhile, the opening degree of the valve can be adjusted according to different heat quantities of the three heat exchangers 4 and the air compressor heat exchanger 2, the flow of the refrigerant in the two branch pipelines can be adjusted, the parallel structure can ensure that the system runs more stably, and the temperature of an air side outlet in the three heat exchangers 4 can be controlled.
4. In the oxygen acquisition process, the water vapor in the air needs to be removed, so that the oxygen generation efficiency is improved. Therefore, the water vapor content in the produced oxygen is extremely low, but the relative humidity of the air is an important factor affecting the thermal comfort of the human body, and in cold high-altitude areas, the relative humidity of the air is not directly satisfactory for the thermal comfort of the human body. The invention has an air humidifying device (namely a humidifying bottle) at the oxygen supply end, thus the requirement of human body on the relative humidity of air can be ensured in the actual using environment.
5. In the invention, a waste heat recovery device is added, waste gas (mainly nitrogen and other gases) discharged by the adsorption tower 16 has certain heat, the waste heat recovery device is used for recovering the part of heat, in extreme weather, a heat supply module cannot meet the heat requirement of a room, the part of heat is replaced with electricity for auxiliary heat, and the heat is used as an auxiliary heat source to ensure the thermal comfort of personnel activities in extreme air.
6. According to the invention, through reasonable arrangement of the component structures, the requirement of changing the air quality inside the room is met, the time group adjusting means can accurately meet the standard, the secondary transformation project is simple and easy, and the cost is lower.
Drawings
FIG. 1 is a working schematic diagram of a series-parallel structure of a multi-section waste heat recovery heat supply oxygen generator set of the present invention;
FIG. 2 is a schematic diagram of the oxygen generation module;
FIG. 3 is a schematic diagram of a series-parallel configuration of heating modules;
FIG. 4 is an isometric view of three heat exchangers;
FIG. 5 is a front view of a three-phase heat exchanger;
FIG. 6 is a left side view of the three heat exchangers;
FIG. 7 is a right side view of the three heat exchangers;
FIG. 8 is a rear view of the three-phase heat exchanger;
FIG. 9 is a top view of a three-phase heat exchanger;
FIG. 10 is a graph of air compressor wall temperature variation;
FIG. 11 is a graph of air temperature changes at the outlet of the air compressor and at the inlet of the adsorption tower;
FIG. 12 is a schematic of oxygen generation concentration;
FIG. 13 is a schematic diagram of the residual gas heat exchange temperature difference.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Detailed Description
The invention has the functions of oxygen supply and heat supply, is designed for areas with heat load and oxygen deficiency, and particularly creates a comfortable environment in high-altitude cold areas. The working principle of the invention is schematically shown in fig. 1, the direction words and sequence numbers used in the invention are based on fig. 1, and the corresponding parts are subject to the schematic drawing.
Referring to fig. 1, the multi-stage waste heat recovery heat supply oxygen generator set of the present invention includes an oxygen generation module, a heating module and an auxiliary heat source module, wherein:
the oxygen generation module is used for extracting oxygen from air, humidifying the oxygen, providing enough oxygen and humidity for indoor areas and storing redundant oxygen. The oxygen generation module comprises an air compressor 1, a multistage high-pressure filter 3, a three-phase heat exchanger 4, a pressure stabilizing tank 12, two adsorption towers 16, an oxygen storage tank 20 and a humidification bottle 23; the air compressor 1 is sequentially connected with a high-pressure filter 3, a three-phase heat exchanger 4 and a pressure stabilizing tank 12, and a second pressure gauge 9, a thermometer 10 and a check valve 11 are sequentially arranged on a pipeline between the three-phase heat exchanger 4 and the pressure stabilizing tank 12; a stop valve 13 and an electromagnetic valve 14 are sequentially arranged on a pipeline between the pressure stabilizing tank 12 and the two adsorption towers 16 connected in parallel, the two adsorption towers 16 and the muffler 15 are respectively connected after the electromagnetic valve 14 is discharged, and waste gas is discharged from the muffler 15; a pressure equalizing valve 17 and two throttle valves 18 are connected in parallel between the two parallel adsorption towers 16 and the oxygen storage tank 20 in sequence; the pressure equalizing valve 17 is used for equalizing the pressure of the two adsorption towers 16, and oxygen produced by the adsorption towers 16 is discharged from the upper parts of the adsorption towers through the throttle valve 18; a one-way valve 19 is arranged between the throttle valve 18 and the air storage tank 20, and a pressure limiting valve 21 and a flow meter 22 are arranged between the air storage tank 20 and the humidification bottle 23.
The heating module is used for eliminating indoor heat load. The heating module is respectively connected with the air compressor 1, the three heat exchangers 4 and the humidification bottle 23 in the oxygen generation module and is used for absorbing the redundant heat generated in the oxygen generation module and heating. The heating module realizes the series-parallel connection conversion by opening and closing the third valve 26, the fourth valve 27 and the fifth valve 28, and specifically adopts the following series-parallel connection structure: the air conditioner comprises an air compressor heat exchanger 2, a first pressure gauge 5, a refrigerant compressor 6, an indoor heat exchanger 7, a throttle valve 8, a third valve 26, a fourth valve 27 and a fifth valve 28, wherein when the third valve 26 and the fifth valve 28 are closed, the fourth valve 27 is opened, a heating module is of a serial structure, the outlet end of the refrigerant compressor 6 is sequentially connected with the indoor heat exchanger 7, the throttle valve 8, the three heat exchangers 4 and the air compressor heat exchanger 2, and finally the inlet end of the refrigerant compressor 6 is connected; when the third valve 26 and the fifth valve 28 are opened, the fourth valve 27 is closed, the heating module is in a parallel structure, the outlet end of the refrigerant compressor 6 is connected with the indoor heat exchanger 7 and the throttle valve 8, the three-way pipe behind the throttle valve 8 realizes the parallel connection of the three heat exchangers 4 and the air compressor heat exchanger 2, and the refrigerant is converged and then connected to the inlet end of the refrigerant compressor 6. In the parallel structure, the three heat exchangers 4 and the air compressor heat exchanger 2 are respectively arranged in the two branch pipelines, so that the system resistance is small, and the system operation is more stable. A first pressure gauge 5 is arranged between the air compressor heat exchanger 2 and the inlet of the refrigerant compressor 6.
The air compressor heat exchanger 2 is arranged on the shell of the air compressor 1; the outlet of the flowmeter 22 is connected with the inlet of the humidifying bottle 23 after leading into the indoor heat exchanger 7.
The invention can meet the heat demand under different working conditions by switching the single system series-parallel connection structure of the heat supply module, improves the heat exchange efficiency of the system, and can adjust the resistance of the system operation, so that the system operation is more stable.
The auxiliary heat source module is used for supplementing heat supply when the heat of the heating module is insufficient, ensures the thermal comfort of personnel, and is connected with the silencer 15 of the oxygen generation module, the indoor heat exchanger 7 of the heat pump module and the three heat exchangers 4 of the oxygen generation module. The auxiliary heat source module includes a first valve 24 and a second valve 25, wherein the first valve 24 is provided on a pipe between the three-phase heat exchanger 4 and the muffler 15, the second valve 25 is provided on a pipe between the indoor heat exchanger 7 and the muffler 15, and the first valve 24 and the second valve 25 are connected in parallel. Waste gas (mainly nitrogen and other gases) discharged by the adsorption tower 16 sequentially passes through the electromagnetic valve 14 and the silencer 15, when the heat of the heat supply module is insufficient, the first valve 24 is closed, the second valve 25 is opened, the waste gas enters the indoor heat exchanger 7, and the heat in the waste gas is recovered; when the auxiliary heat source is not needed, the first valve 24 is opened, the second valve 25 is closed, and the waste gas is used for blowing the three-phase heat exchanger 4.
The working principle of the technical scheme is as follows:
the oxygen generation module is used for extracting oxygen from air, humidifying the oxygen and then introducing the oxygen into the room, the oxygen generation technology of the module adopts a pressure swing adsorption method to prepare the oxygen, outdoor air passes through the air compressor 1, the air compressor 1 compresses the air due to reciprocating piston type motion, consumes electric energy and generates heat energy, the air is compressed into high-temperature and high-pressure gas, the pressure of the gas is controlled to be 0.15-0.5 Mpa, and the temperature of the gas outlet is 20-30 ℃ higher than the ambient temperature. The high-temperature and high-pressure air passes through the filter 3 to remove dust and water vapor in the high-temperature and high-pressure air. In the pressure swing adsorption type oxygen generation mode, the high-efficiency oxygen generation rate can be realized only by cooling the compressed air to the normal temperature, therefore, the compressed air from the high pressure filter 3 passes through the three-phase heat exchanger 4, the compressed air is cooled to the normal temperature, the air pressure gauge 9 and the air thermometer 10 measure the pressure and the temperature of the cooled compressed air, the pressure and the temperature of the compressed air enter the pressure stabilizing tank 12 through the check valve 11, the compressed air after pressure stabilization enters two adsorption towers 16 which are connected in parallel through a stop valve 13 and an electromagnetic valve 14, the zeolite molecular sieve in the adsorption tower separates oxygen, nitrogen and other gases, the mode that double adsorption towers are connected in parallel is adopted, when one of the adsorption towers 16 is operated and the other adsorption tower is in a regeneration process, the two adsorption towers are matched with each other, oxygen is discharged from the upper part of the adsorption tower 16, and nitrogen and other gases are discharged from the lower part of the adsorption tower 16. The pressure equalizing valve 17 on the upper part of the adsorption tower 16 can balance the pressure of the two adsorption towers, and the discharged oxygen enters the air storage tank 20 through the check valve 19 after the flow of the discharged oxygen is regulated by the throttle valve 18, so that the prepared oxygen is stored. Flowmeter 22 measures and monitors and lets in indoor oxygen flow, because the oxygen that oxygen system made does not contain water vapor, for guaranteeing human comfortable requirement of breathing, need the oxygen humidifying, oxygen gets into indoor heat exchanger 7 after coming out from flowmeter 22, let in indoor heat exchanger 7 with the room air simultaneously and heat after mixing with oxygen, the oxygen-enriched gas after will mixing again lets in humidifying bottle 23, carry out humidification treatment back rethread indoor, the oxygen-enriched gas after the humidifying had both satisfied human oxygen demand and had satisfied human comfortable demand again.
The heating module adopts an air-conditioning heat pump system, wherein the indoor heat exchanger 7 releases heat, the three-phase heat exchanger 4 and the air compressor heat exchanger 2 absorb heat, a double evaporator (namely the three-phase heat exchanger 4 and the air compressor heat exchanger 2) is adopted, and the conversion of the series connection and the parallel connection of the double evaporator is realized through valve adjustment. The refrigerant is first compressed into high-temperature and high-pressure refrigerant gas by the refrigerant compressor 6, then passes through the indoor heat exchanger 7, the refrigerant is changed into high-pressure liquid from the high-temperature and high-pressure gas, and the released heat heats indoor air by the indoor heat exchanger 7, so that the heat load of a room is met. The refrigerant passes through the throttle valve 8 after coming out of the indoor heat exchanger 7, the pressure of the refrigerant is reduced, if the third stop valve 26 and the fifth stop valve 28 are closed and the fourth stop valve 27 is opened, the double evaporators are in a series working state, the refrigerant passes through the three-phase heat exchanger 4 and then passes through the air compressor heat exchanger 2, absorbs heat in the three-phase heat exchanger 4 and the air compressor heat exchanger 2, gradually changes from a liquid state to a gas state, and then returns to the refrigerant compressor 6 through the refrigerant pressure gauge 5. If the third stop valve 26 and the fifth stop valve 28 are opened and the fourth stop valve 27 is closed, the double evaporators are in a parallel working state, refrigerant passes through the three-phase heat exchanger 4 and the air compressor heat exchanger 2 respectively, the refrigerant absorbs heat in the three-phase heat exchanger 4 and the air compressor heat exchanger 2, gradually changes from a liquid state to a gas state, then converges at the inlet of the compressor 1, finally returns to the refrigerant compressor 6 through the refrigerant pressure gauge 5, and performs reciprocating circulation to provide heat for a room. The parallel refrigerant absorbs heat in the three heat exchangers 4 and the air compressor heat exchanger 2 respectively more flexibly and stably, the opening degree of a valve can be adjusted, the refrigerant flow of the two branches can be adjusted, the heat exchange amount of the three heat exchangers 4 can be further controlled, and the outlet temperature of high-temperature and high-pressure air entering the three heat exchangers 4 can be controlled.
The auxiliary heat source module, since the residual gas is separated by the adsorption tower 16, has a certain amount of heat, and can collect and utilize the heat as an auxiliary heat source to assist in increasing heat when the weather is cold. The residual gas firstly comes out from the pressure swing adsorption tower, then the first stop valve 24 and the second stop valve 25 are adjusted, when the cold weather is met, the second stop valve 25 is opened to close the first stop valve 24, the residual air can enter the indoor heat exchanger 7 through the second stop valve 25, heat is brought into the indoor space through the fan, the cooled residual gas is used as pure gas, no water vapor is contained, and the kinetic energy is utilized to be introduced into the three heat exchangers 4, so that the defrosting function is realized. When the weather is not very cold, the heat supply of the air conditioner can meet the heat load of a room, the first stop valve 24 is opened, the second stop valve 25 is closed, the residual gas is directly introduced into the three heat exchangers 4, and the heat of the residual gas is used for defrosting.
In the process, high-temperature and high-pressure air flows out of the high-pressure filter 3, passes through one coil pipe in the three heat exchangers 4 and then flows to the second pressure gauge 9; the refrigerant enters the other coil of the three-phase heat exchanger 4, and the refrigerant and the air respectively flow through the two coils of the three-phase heat exchanger 4 and exchange heat; the remaining exhaust gas can be switched and regulated by the first valve 24 and the second valve 25 to pass through the indoor heat exchanger 7 and exchange heat.
Preferably, the three heat exchangers 4 are heat exchange devices adopting fin type structures, as shown in fig. 4, each of the three heat exchangers 4 includes two sets of heat exchange fins arranged up and down and connected in series, a box is fixed on each side of each set of heat exchange fins, an axial flow fan is arranged in each box, and the center of each fan is located at the center of each box.
Preferably, as shown in fig. 5 and 6, each group of heat exchange fins adopts 2 rows and 10 rows of copper tubes, and the copper tubes are longitudinally connected. Copper pipe diameter 10mm, intertube distance 10mm, upper and lower copper pipe centre spacing is 20mm, and first row copper pipe and heat transfer fin edge interval 10mm, first row and second row copper pipe interval 10mm, second row and heat transfer fin edge interval 10 mm.
As shown in fig. 4, when the three heat exchangers 4 are in use, high-temperature and high-pressure air coming out of the air compressor 1 passes through the first row tubes of the fins, the throttled refrigerant passes through the second row tubes of the heat exchange fins, and enters from the upper side and exits from the lower side respectively to form concurrent heat exchange, and the refrigerant cools the high-temperature and high-pressure air to change the high-temperature and high-pressure air into a high-pressure normal-temperature state. In addition, the residual gas after separation by the adsorption tower 16 is introduced into the three heat exchangers 4 through the electromagnetic valve 14 and the silencer 15, and the kinetic energy and the temperature of the residual gas are utilized to realize the injection and the heat exchange of the three heat exchangers 4.
Preferably, each group of heat exchange fins has a width of 200mm and a height of 200mm, the boxes have a width of 200mm multiplied by 260mm multiplied by 200mm, and the space between the two boxes is 100mm, so that the total height of the three heat exchangers is 500 mm.
Preferably, as shown in FIG. 8, the air volume of the axial flow fan is 155m3/h。
Preferably, the adsorption column 16 is a pressure swing adsorption column.
Preferably, the multi-stage high-pressure filter 3 can adopt a model 015P multi-stage high-pressure filter generated by Shenzhen Virgie electromechanical devices Limited. The air compressor heat exchanger 2 may be an air compressor heat exchanger model JG1202-02 produced by the nino electric machines limited, da state.
To illustrate the effect of the present invention, data relating to experimental studies are given:
the invention is mainly characterized in that the evaporator is used for absorbing heat generated in the oxygen production process of the oxygen generator, wherein the main components for absorbing heat are the three-phase heat exchanger 4 and the air compressor heat exchanger 2, so that the heat recovery effect can be seen by comparing the change of the wall temperature of the air compressor with the temperature change from the outlet of the air compressor to the inlet of the adsorption tower. As can be seen from FIG. 10, the wall temperature of the air compressor is also significantly reduced, and as can be seen from FIG. 11, compared with the oxygen generator without the heat supply module, the air temperature of the unit with the heat supply module is significantly reduced from the outlet of the air compressor to the inlet of the adsorption tower. The heat of the two parts is absorbed by the three heat exchangers and the heat exchanger of the air compressor respectively.
As can be seen from FIG. 11, the air temperature decreases from the outlet of the air compressor to the inlet of the adsorption tower, so the influence of heat recovery on the oxygen generation effect needs to be considered, and then a comparative test of the oxygen generation concentration is performed.
Through tests, invalid data are eliminated, and valid data are analyzed to obtain that the average concentration of oxygen generation is 87.46/% vol, and the average oxygen concentration of tail gas is 14.39%. Therefore, through analysis of experimental data, the heat supply module absorbs the heat generated by the oxygen generator and does not influence the oxygen generation concentration, as shown in fig. 12.
The invention has the other characteristic that the invention has an auxiliary heat source, and the heat of the residual gas is used as the auxiliary heat source to ensure the heat comfort requirement of indoor personnel in extreme weather, so that the heat exchange condition of the residual gas is tested and analyzed.
As shown in fig. 13, the temperature of the gas leaving the adsorption tower is about 19.2 ℃, and after heat exchange in the indoor heat exchanger 7, the temperature drops to about 15 ℃, so that the temperature drops to 4.2 ℃, and the indoor heat exchanger 7 absorbs this energy and feeds it into the room as an auxiliary heat source.
In conclusion, experiments prove that the oxygen generating device has a good oxygen generating effect, fully utilizes heat, ensures indoor heat supply, also ensures indoor oxygen concentration and simultaneously ensures the thermal comfort requirement of personnel in extreme weather.
In order to illustrate the effect of the invention, the following engineering practical cases are given:
taking the Tibetan Ali area as an example, the Tibetan Ali area is located at the juncture of the West south of China, the west of the Tibetan autonomous region and the north of the Qinghai-Tibet plateau (Changtang plateau), the climate belongs to the climate of alpine desert, the annual average temperature is 0.4-3.1 ℃, the annual average precipitation is 69-173 mm, the temperature difference between day and night is large, the outdoor extreme high temperature is 21 ℃ in summer, the temperature is more than 10 ℃ in 8 months in daytime, and the temperature at night is reduced to be less than 0 ℃. The lowest outdoor temperature can reach more than minus 20 ℃ in winter, and the temperature is colder at night, so that heating facilities are very needed in the Ali region in winter and summer, and normal life of a human body in a room is guaranteed. In addition, most areas in Tibet have 50% -60% of oxygen content in air, and in the region of Ali, the altitude is about 4300 m, the oxygen content is about 59%, and people in plain areas can all have symptoms of high altitude anoxia under the anoxia condition, such as chest distress, short breath, headache, leg weakness and the like. The demand for oxygen is therefore very great in the region, in particularIs a special place, such as a hospital, an old care home, a kindergarten and the like. The oxygen generation efficiency of the invention is above 85%, the maximum oxygen generation amount can reach 20L/min, and the oxygen breathing requirement of 5 to 6 people can be ensured. Meanwhile, the heat supply module can be equivalent to a 1.5-piece air conditioner, the heating capacity is about 3500W, and the requirement of about 20m can be met2The heating demand of square meters is still insufficient in the heating capacity of 3500W in the extreme weather of Ali, but the 3500W can ensure the daily heating demand, so that in the extreme weather, an auxiliary heat source can be started, the heating capacity is increased, and the heat demand of indoor personnel is ensured, which is a great advantage of the invention. After oxygen supply and heat supply meet the requirements of human bodies, the influence of air relative humidity on the comfort level of the human bodies is also considered, the relative humidity of the region of Tibet Ali is about 20%, but the comfort standard of the human bodies is 45% -65%. The invention really realizes heating and oxygen supplying and humidifying at the same time, meets the requirements of thermal comfort and breathing comfort of personnel in high altitude areas, and ensures the requirements of the old, children, patients and the like on using thermal oxygen.
In summary, the demand of buildings in the region of Ali in Tibet on oxygen and heat is very large, the invention can supply oxygen while supplying heat, and both the oxygen supply amount and the heat supply amount can meet the requirements of thermal comfort and respiratory comfort of human bodies, thereby ensuring the life health of the human bodies and having very great practical significance and practical application value.
Claims (10)
1. The utility model provides a multistage waste heat recovery heat supply oxygenerator unit, its characterized in that, including system oxygen module, heating module and auxiliary heat source module, wherein:
the oxygen generation module comprises an air compressor, a multistage high-pressure filter, three heat exchangers, a pressure stabilizing tank, two adsorption towers, an oxygen storage tank and a humidification bottle; the air compressor is sequentially connected with a high-pressure filter, three heat exchangers and a pressure stabilizing tank, and a second pressure gauge, a thermometer and a check valve are sequentially arranged on a pipeline between the three loose heat exchangers and the pressure stabilizing tank; a stop valve and an electromagnetic valve are sequentially arranged on a pipeline between the pressure stabilizing tank and the two parallel adsorption towers, and the two adsorption towers and the silencer are respectively connected after the electromagnetic valve is discharged; a pressure equalizing valve and two throttle valves are connected in parallel between the two parallel adsorption towers and the oxygen storage tank in sequence; a one-way valve is arranged between the throttling valve and the air storage tank, and a pressure limiting valve and a flow meter are arranged between the air storage tank and the humidification bottle 23;
the heating module is respectively connected with an air compressor, three heat exchangers and a humidification bottle in the oxygen generation module;
the auxiliary heat source module is connected with a silencer, an indoor heat exchanger and three heat exchangers in the oxygen generation module.
2. The multi-stage waste heat recovery heat supply oxygen generating unit according to claim 1, wherein the heating module comprises an air compressor heat exchanger, a first pressure gauge, a refrigerant compressor, an indoor heat exchanger, a throttle valve, a third valve, a fourth valve and a fifth valve, wherein when the third valve and the fifth valve are closed, the fourth valve is opened, the heating module is in a series structure, and an outlet end of the refrigerant compressor is sequentially connected with the indoor heat exchanger, the throttle valve, the three heat exchangers and the air compressor heat exchanger and finally connected to an inlet end of the refrigerant compressor; when the third valve and the fifth valve are opened, the fourth valve is closed, the heating module is of a parallel structure, the outlet end of the refrigerant compressor 6 is connected with the indoor heat exchanger 7 and the throttle valve 8, the three-way pipe behind the throttle valve 8 realizes the parallel connection of the three heat exchangers 4 and the air compressor heat exchanger 2, and the refrigerant is converged and then connected to the inlet end of the refrigerant compressor 6; the first pressure gauge 5 is arranged between the air compressor heat exchanger 2 and an inlet of the refrigerant compressor 6; the air compressor heat exchanger is arranged on a shell of the air compressor; the outlet of the flowmeter is connected with the inlet of the humidifying bottle after being communicated with the indoor heat exchanger.
3. The multi-stage heat recovery heat supply oxygen generating unit as recited in claim 1, wherein the auxiliary heat source module includes a first valve and a second valve, wherein the first valve is disposed on a pipe between the three heat exchangers and the muffler, the second valve is disposed on a pipe between the indoor heat exchanger and the muffler, and the first valve and the second valve are connected in parallel.
4. The multi-stage waste heat recovery heat supply oxygen generating unit according to claim 1, wherein the gas pressure of the high-temperature and high-pressure gas in the air compressor is 0.15Mpa-0.5Mpa, and the outlet temperature is 20 ℃ to 30 ℃ higher than the ambient temperature.
5. The multi-stage waste heat recovery heat supply oxygen generating unit as claimed in any one of claims 1 to 4, wherein the three heat exchangers comprise two sets of heat exchange fins arranged up and down and connected in series, a box is fixed on each side of each set of heat exchange fins, and an axial flow fan is arranged in each box.
6. The multi-stage waste heat recovery heat supply oxygen generating unit according to claim 5, wherein each group of heat exchange fins adopts 2 rows and 10 rows of copper pipes, and the copper pipes are longitudinally connected.
7. The multi-stage waste heat recovery heat supply oxygen generating unit according to claim 6, wherein the diameter of the copper pipe is 10mm, the distance between the copper pipes is 10mm, the center distance between the upper copper pipe and the lower copper pipe is 20mm, the distance between the copper pipes in the first row and the edges of the heat exchange fins is 10mm, the distance between the copper pipes in the first row and the second row is 10mm, and the distance between the copper pipes in the second row and the edges of the heat exchange fins is 10 mm.
8. The multi-stage waste heat recovery heat supply oxygen generating unit according to any one of claim 5, wherein each group of the heat exchange fins has a width of 200mm and a height of 200mm, the boxes have a width of 200mm x 260mm x 200mm, and the space between the two boxes is 100 mm.
9. The multi-stage heat recovery heat supply oxygen generating unit as claimed in claim 5, wherein the air volume of the axial flow fan is 155m3/h。
10. The multi-stage waste heat recovery heat supply oxygen generation unit according to any one of claims 1 to 4, wherein the adsorption tower 16 is a pressure swing adsorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110517227.3A CN113251469B (en) | 2021-05-12 | 2021-05-12 | Multistage waste heat recovery heat supply oxygenerator group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110517227.3A CN113251469B (en) | 2021-05-12 | 2021-05-12 | Multistage waste heat recovery heat supply oxygenerator group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113251469A true CN113251469A (en) | 2021-08-13 |
| CN113251469B CN113251469B (en) | 2023-10-27 |
Family
ID=77222970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110517227.3A Active CN113251469B (en) | 2021-05-12 | 2021-05-12 | Multistage waste heat recovery heat supply oxygenerator group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113251469B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940801A (en) * | 2017-10-23 | 2018-04-20 | 浙江大学 | A kind of space division system for recycling compressed air waste-heat |
| CN208413846U (en) * | 2018-06-28 | 2019-01-22 | 广州南都电子科技有限公司 | A kind of oxygenerator with residual neat recovering system |
| JP2019196873A (en) * | 2018-05-10 | 2019-11-14 | Ｊｆｅスチール株式会社 | Recovery method of waste heat of air separation equipment and recovery system of waste heat of air separation equipment |
| CN110455006A (en) * | 2019-08-06 | 2019-11-15 | 辽宁华融富瑞新能源科技股份有限公司 | It is a kind of metallurgy oxyen manutactory's waste heat recycling with energy cascade utilization coupled system |
| CN110567192A (en) * | 2019-09-04 | 2019-12-13 | 鞍钢股份有限公司 | Oxygen production process waste heat gradient utilization system and method |
-
2021
- 2021-05-12 CN CN202110517227.3A patent/CN113251469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940801A (en) * | 2017-10-23 | 2018-04-20 | 浙江大学 | A kind of space division system for recycling compressed air waste-heat |
| JP2019196873A (en) * | 2018-05-10 | 2019-11-14 | Ｊｆｅスチール株式会社 | Recovery method of waste heat of air separation equipment and recovery system of waste heat of air separation equipment |
| CN208413846U (en) * | 2018-06-28 | 2019-01-22 | 广州南都电子科技有限公司 | A kind of oxygenerator with residual neat recovering system |
| CN110455006A (en) * | 2019-08-06 | 2019-11-15 | 辽宁华融富瑞新能源科技股份有限公司 | It is a kind of metallurgy oxyen manutactory's waste heat recycling with energy cascade utilization coupled system |
| CN110567192A (en) * | 2019-09-04 | 2019-12-13 | 鞍钢股份有限公司 | Oxygen production process waste heat gradient utilization system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113251469B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202581623U (en) | Humidity independent control fresh air processor for radiation air-conditioning system | |
| CN104596143A (en) | Temperature and humidity decoupled treatment air-conditioning system based on non-azeotropic refrigerants | |
| CN110769646A (en) | Energy-saving and efficient evaporative cooling air conditioning system suitable for data center | |
| CN102261702A (en) | Dual-effect solution dehumidification fresh air unit | |
| CN107036194B (en) | High-temperature water-cooling double-cold-source dehumidifying fresh air ventilator unit | |
| CN113251699B (en) | Heat recovery type heat pump oxygen-making air conditioning unit | |
| CN210267580U (en) | Composite energy air treatment unit | |
| CN113251470B (en) | Heat recovery heat supply oxygen generator set for alpine anoxic environment | |
| CN205783976U (en) | The refrigeration system that a kind of solar energy absorption type refrigeration is compound with absorption type refrigerating | |
| CN113028524B (en) | Multi-split type solid dehumidification multifunctional air conditioning system and application method thereof | |
| CN112229003B (en) | Air conditioning system and control method thereof | |
| CN107062696B (en) | A kind of hybrid system | |
| CN113251469B (en) | Multistage waste heat recovery heat supply oxygenerator group | |
| CN102410675B (en) | Over-cooling device and over-cooling method for evaporative condensation type refrigeration system | |
| CN114872873B (en) | Marine zero-carbon-emission energy system combining solution dehumidifying air conditioner and sea water desalination technology and working method thereof | |
| CN101713579B (en) | Open low-temperature heat source refrigerating system | |
| CN203848548U (en) | Multipurpose air source heat pump unit | |
| CN113251700B (en) | Frostless type heat pump oxygen-making air conditioning unit | |
| CN202993383U (en) | Solution-type constant temperature dehumidifier | |
| CN210951658U (en) | High-efficiency combined refrigerating system and refrigerator | |
| CN207922612U (en) | A kind of cooling different poly- state heat utilization system of band centre separation | |
| CN203286676U (en) | Integrated control system of central air-conditioner and domestic hot water | |
| CN201652666U (en) | Evaporative cooling solar liquid desiccant ground pipe air conditioning equipment Winter and summer used | |
| CN110631150A (en) | High-efficiency combined refrigerating system and refrigerator | |
| CN205448163U (en) | Air -conditioner regulating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211208 Address after: 611137 No. 1, floor 27, unit 2, building 1, No. 28, north section of Tianfu Avenue, high tech Zone, Chengdu, Sichuan Applicant after: Sichuan zero carbon Engineering Technology Co.,Ltd. Address before: 610058 No. 4, floor 1, unit 1, building 1, No. 56, Donghong Road, Chenghua District, Chengdu, Sichuan Applicant before: CHENGDU LVJIAN ENGINEERING TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |