CN112254366A - Cold and hot combined supply double-effect plate replacement machine set - Google Patents
Cold and hot combined supply double-effect plate replacement machine set Download PDFInfo
- Publication number
- CN112254366A CN112254366A CN202011249719.0A CN202011249719A CN112254366A CN 112254366 A CN112254366 A CN 112254366A CN 202011249719 A CN202011249719 A CN 202011249719A CN 112254366 A CN112254366 A CN 112254366A
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- Prior art keywords
- temperature
- low
- temperature circulation
- cold
- circulation
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- 239000012530 fluid Substances 0.000 claims abstract description 15
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000013021 overheating Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 12
- 239000003921 oil Substances 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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- 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
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A double-effect plate exchanger set for supplying cold and heat in a combined mode adopts a cascade system and consists of a low-temperature cycle and a high-temperature cycle, wherein the low-temperature cycle adopts R134a or other similar high-efficiency refrigerants, and the high-temperature cycle adopts R123 or similar high-temperature low-pressure refrigerants. By utilizing different physical properties of two refrigerants and matching with the design of the components of the unit system, the hot fluid (heat conducting oil) is heated to 100-120 ℃ while the cold fluid at-30-0 ℃ is prepared, and the refrigerant is an energy-saving product replacing the combination of the traditional boiler and a refrigerator, and has better market application prospect.
Description
Technical Field
The invention relates to the field of simultaneous cooling and heating, in particular to the field of a cold and hot combined supply double-effect plate exchanger unit.
Background
Many trades need low temperature refrigeration simultaneously need high temperature to heat in the industry, and need cold volume and heat roughly equal, and the boiler is adopted to present heat supply mostly, and the boiler can produce waste gas, waste water, waste residue, and is not energy-conserving also not environmental protection. In general, a combination of a refrigerator and a cooling tower or a refrigerator with evaporative cooling is adopted to improve the efficiency of the system, but no matter how the efficiency is improved, waste heat generated by refrigeration needs to be exhausted to air through the cooling tower or the evaporative cooling and is lost, so that the energy saving is limited.
Disclosure of Invention
From the perspective of energy conservation and emission reduction, the invention develops a combined cooling and heating double-effect plate exchanger unit which can replace a boiler to provide a high-temperature heat source and can also replace a refrigerator to provide a low-temperature cold source. The system meets the requirements of low-temperature cooling and high-temperature heating on an industrial production line, the heating end heats fluid by using waste heat generated by the cooling end, the system is very energy-saving, the system configuration is simple, a plurality of intermediate auxiliary devices are omitted, no fuel is combusted to generate waste gas, waste residue and waste water, and the system is very environment-friendly.
The specific technical scheme of the invention is as follows:
a double-effect plate exchanger set for supplying cold and heat in a combined mode adopts a cascade system and consists of a low-temperature cycle and a high-temperature cycle, wherein the low-temperature cycle adopts R134a or other similar high-efficiency refrigerants, and the high-temperature cycle adopts R123 or other high-temperature low-pressure refrigerants.
The low-temperature circulation realizes the function of a refrigerator, and a low-temperature compressor 1, a low-temperature circulation secondary oil separator 2, a horizontal intermediate plate heat exchanger 3, a low-temperature circulation drying filter 4, a low-temperature circulation flash evaporator 5, a low-temperature circulation secondary condenser 6, a low-temperature circulation electronic expansion valve 7, a low-temperature circulation multi-section horizontal plate heat exchange evaporator 8 and a low-temperature circulation oil cooler 9 are connected into a complete refrigeration loop through pipelines and valves; can prepare cold fluid at minus 30 ℃ to 0 ℃.
The high-temperature circulation realizes the function of a boiler, and a high-temperature compressor 10, a high-temperature circulation secondary oil separator 11, a high-temperature circulation multi-section horizontal plate heat exchanger 12, a high-temperature circulation drying filter 13, a high-temperature circulation flash evaporator 14, a high-temperature circulation secondary condenser 15, a high-temperature circulation electronic expansion valve 16 and a horizontal intermediate plate heat exchanger 3 are connected into a complete refrigeration loop by means of pipelines and valves. The horizontal intermediate plate heat exchanger is a condenser in low-temperature circulation and an evaporator in high-temperature circulation. The refrigerant R123 of the high-temperature cycle absorbs the condensation heat of R134a in the low-temperature cycle in the horizontal intermediate plate heat exchanger to realize high-temperature evaporation, then the high-temperature compressor does work to obtain higher condensation temperature, and the hot fluid (heat conducting oil) is heated to 100-120 ℃.
The evaporation temperature range of a low-temperature circulating compressor of the cold and hot combined supply double-effect plate exchanger set is more than minus 40 ℃ and less than 20 ℃, the condensation temperature range is more than 20 ℃ and less than Tc and less than 70 ℃, the evaporation temperature range of a high-temperature circulating compressor is more than 35 ℃ and less than 75 ℃, and the condensation temperature range is more than 85 ℃ and less than Tc and less than 125 ℃.
Horizontal intermediate plate heat exchanger, low temperature circulation multistage horizontal plate heat exchanger evaporator, high temperature circulation multistage horizontal plate heat exchanger condenser in the cold and hot combined supply double effect plate heat exchanger unit are stainless steel all-welded horizontal plate heat exchanger, two kinds of fluids realize the full countercurrent exchange completely in the stainless steel plate heat exchanger, the heat exchange efficiency is high, the end difference of plate heat exchanger can be controlled in the range of 0.5 ℃ -2 ℃, thus lower cold fluid temperature and higher hot fluid temperature can be obtained under the same evaporating temperature and condensing temperature. The stainless steel plate has good low-temperature and high-temperature resistance, overcomes the defect that a copper pipe is easy to crack at low temperature or high temperature, reduces the fault risk of the unit, and improves the reliability of the unit.
The low-temperature circulation and the high-temperature circulation are both provided with secondary condensers, which are mainly used for eliminating harmful overheating of the system, maintaining the cold and hot balance of the system, keeping the low-temperature refrigeration and the high-temperature heating within the required temperature range, avoiding temperature drift and ensuring the stable operation of the unit. Wherein, the secondary condenser in the high-temperature circulation adopts a small part of refrigerant in the low-temperature circulation to evaporate and cool. And the secondary condenser is externally connected with a small cooling tower for heat dissipation in low-temperature circulation.
The highest pressure of the low-temperature circulation and the high-temperature circulation does not exceed 16bar, so that the system does not need to adopt special high-pressure-bearing equipment.
The expansion valves of the combined cooling and heating double-effect plate exchange unit adopt electronic expansion valves, can accurately control the cooling evaporation capacity according to the temperature, and has a programming function.
The unit electric control system is provided with an interface connected to a central control of a factory, so that the industrial Internet of things can be conveniently connected, and the control of the Internet of things can be realized.
Drawings
FIG. 1 is a block diagram of a combined cooling and heating dual-purpose plate-type exchanger
Wherein 1, a low-temperature compressor 2, a low-temperature circulating secondary oil separator 3, a horizontal intermediate plate heat exchanger 4, a low-temperature circulating drying filter 5, a low-temperature circulating flash evaporator 6, a low-temperature circulating secondary condenser 7, a low-temperature circulating electronic expansion valve 8, a low-temperature circulating multi-section horizontal plate heat exchanger evaporator 9, a low-temperature circulating oil cooler 10, a high-temperature compressor 11, a high-temperature circulating secondary oil separator 12, a high-temperature circulating multi-section horizontal plate heat exchanger condenser 13, a high-temperature circulating drying filter 14, a high-temperature circulating flash evaporator 15, a high-temperature circulating secondary condenser 16 and a high-temperature circulating electronic
Detailed Description
The present invention will be further described in detail with reference to the accompanying drawings by taking the example of simultaneously preparing a cold fluid at 0 ℃ and a hot fluid at 100 ℃
The evaporation temperature of an R134a refrigerant in the low-temperature circulation multi-section horizontal plate-exchange evaporator 8 is set to be-2 ℃, the end difference of the multi-section horizontal plate-exchange evaporator is set to be 2 ℃, R134a is evaporated in the low-temperature compressor 8 to reduce the cold fluid to 0 ℃, then the refrigerant enters the low-temperature compressor 1 to be compressed and enters the oil separator 2, the lubricating oil carried by the separation enters the horizontal intermediate plate-exchange heat exchanger 3 to be condensed, the condensing temperature is assumed to be 50 ℃, the working condition is just in the middle section of the working range of the low-temperature compressor, the operation is ideal, the refrigerant enters the flash evaporator 5 after being condensed and then enters the low-temperature circulation secondary condenser 6 to be further reduced in temperature, and finally the refrigerant enters the multi-section plate-exchange evaporator.
The evaporating temperature of the high-temperature circulation R123 in the middle horizontal plate heat exchanger 3 is set to 45 ℃, the high-temperature circulation R123 absorbs the condensation heat of R134a in the low-temperature circulation to evaporate, then the high-temperature circulation R123 enters the high-temperature circulation secondary oil separator 11, the separated lubricating oil enters the high-temperature circulation multi-section horizontal plate heat exchanger 12, the condensing temperature is set to 102 ℃, the end difference of the plate heat exchanger is controlled to be 2 ℃, the R123 releases heat in the plate heat exchanger to heat hot fluid (heat conducting oil) to 100 ℃, the condensed R123 sequentially enters the drying filter 13, the high-temperature circulation flash evaporator 14, the high-temperature circulation secondary condenser 15, the high-temperature circulation electronic expansion valve 16 and finally returns to the horizontal middle plate heat exchanger to realize the evaporation at 45 ℃, and the working condition is also exactly positioned in the middle section of the working range of the high-temperature compressor.
Advantageous effects
Compared with the traditional refrigerator and boiler combination mode, the cold and hot combined supply double-effect plate exchanger set realizes the functions of the two devices. The equipment simultaneously supplies cold and heat, simplifies the system structure, reduces the occupied area, reduces the water consumption and the medicine consumption, is more convenient to control, and lays a foundation for the power equipment to be connected into the future industrial Internet of things. The heating end has no CO2 emission and good environmental protection performance.
Compared with a refrigerator and heat pump combination, the cold and heat combined supply double-effect plate exchanger set recovers waste heat generated by refrigeration into hot fluid (heat conduction oil) heated in a high-temperature cycle, realizes double utilization of energy, and saves much energy compared with the refrigerator and heat pump combination which discharges heat into air and absorbs energy from the air.
Claims (4)
1. A double-effect plate exchanger set for supplying cold and heat in a combined mode adopts a cascade system and comprises a low-temperature circulation system and a high-temperature circulation system, wherein the low-temperature circulation system adopts R134a or other similar high-efficiency refrigerants, and the high-temperature circulation system adopts R123 or similar high-temperature low-pressure refrigerants. The method is characterized in that: the unit can heat hot fluid (heat conducting oil) to 100-120 ℃ while preparing cold fluid at-30-0 ℃.
The low-temperature circulation is characterized in that a low-temperature compressor, a low-temperature circulation secondary oil separator, an intermediate horizontal plate heat exchanger, a low-temperature circulation drying filter, a low-temperature circulation flash evaporator, a low-temperature circulation secondary condenser, a low-temperature circulation electronic expansion valve, a low-temperature circulation multi-section horizontal plate heat exchange evaporator and a low-temperature circulation oil cooler are connected into a complete refrigeration loop by virtue of pipelines and valves.
The high-temperature circulation is characterized in that a high-temperature compressor, a high-temperature circulation secondary oil separator, a high-temperature circulation multi-section horizontal plate heat exchanger condenser, a high-temperature circulation drying filter, a high-temperature circulation flash evaporator, a high-temperature circulation secondary condenser, a high-temperature circulation electronic expansion valve and an intermediate horizontal plate heat exchanger are connected into a complete refrigeration loop by means of pipelines and valves.
2. The machine set of claim 1 for exchanging heat and cold with a dual purpose plate, wherein: the middle horizontal plate heat exchanger, the low-temperature circulating multi-section horizontal plate evaporator and the high-temperature circulating multi-section horizontal plate condenser all adopt all-welded stainless steel horizontal structures, the end difference can be controlled within the range of 0.5-2 ℃, and the middle horizontal plate heat exchanger is not only a condenser in low-temperature circulation but also an evaporator in high-temperature circulation.
3. The machine set of claim 1 for exchanging heat and cold with a dual purpose plate, wherein: the low-temperature circulation and the high-temperature circulation are both provided with secondary condensers to eliminate the harmful overheating of the system, maintain the cold and heat balance of the system, keep the low-temperature refrigeration and the high-temperature heating within the required temperature range, avoid temperature drift and ensure the stable operation of the unit.
4. The machine set of claim 1 for exchanging heat and cold with a dual purpose plate, wherein: the secondary condenser in the high temperature cycle is cooled with refrigerant in the low temperature cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249719.0A CN112254366A (en) | 2020-11-10 | 2020-11-10 | Cold and hot combined supply double-effect plate replacement machine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249719.0A CN112254366A (en) | 2020-11-10 | 2020-11-10 | Cold and hot combined supply double-effect plate replacement machine set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112254366A true CN112254366A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011249719.0A Pending CN112254366A (en) | 2020-11-10 | 2020-11-10 | Cold and hot combined supply double-effect plate replacement machine set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112254366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022100340A1 (en) * | 2020-11-10 | 2022-05-19 | 云南道精制冷科技有限责任公司 | Dual-effect plate exchange unit of combined cooling and heating supply |
| CN116123747A (en) * | 2023-04-14 | 2023-05-16 | 云南道精制冷科技有限责任公司 | Overlapping type cold and hot source unit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH225743A (en) * | 1942-01-29 | 1943-02-28 | Escher Wyss Maschf Ag | Heat pump system. |
| CN1963342A (en) * | 2006-11-21 | 2007-05-16 | 华南理工大学 | Great temperature difference self-overlapping heat pump with segregator |
| KR100859311B1 (en) * | 2008-05-13 | 2008-09-19 | 김상원 | A heating and cooling system using a cascade heat exchanger |
| WO2013035459A1 (en) * | 2011-09-08 | 2013-03-14 | 株式会社神戸製鋼所 | Heat pump |
| CN107741100A (en) * | 2017-10-27 | 2018-02-27 | 华南理工大学 | A kind of Gas-supplying enthalpy-increasing indirect refrigeration system for train air-conditioning |
| CN108800632A (en) * | 2017-05-05 | 2018-11-13 | 云南道精制冷科技有限责任公司 | A kind of ice water station for producing 2 DEG C of ice water |
| CN111536708A (en) * | 2019-02-07 | 2020-08-14 | 西克制冷产品有限责任公司 | Cooling system |
| CN213713606U (en) * | 2020-11-10 | 2021-07-16 | 云南道精制冷科技有限责任公司 | Cold and hot combined supply double-effect plate replacement machine set |
-
2020
- 2020-11-10 CN CN202011249719.0A patent/CN112254366A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH225743A (en) * | 1942-01-29 | 1943-02-28 | Escher Wyss Maschf Ag | Heat pump system. |
| CN1963342A (en) * | 2006-11-21 | 2007-05-16 | 华南理工大学 | Great temperature difference self-overlapping heat pump with segregator |
| KR100859311B1 (en) * | 2008-05-13 | 2008-09-19 | 김상원 | A heating and cooling system using a cascade heat exchanger |
| WO2013035459A1 (en) * | 2011-09-08 | 2013-03-14 | 株式会社神戸製鋼所 | Heat pump |
| CN108800632A (en) * | 2017-05-05 | 2018-11-13 | 云南道精制冷科技有限责任公司 | A kind of ice water station for producing 2 DEG C of ice water |
| CN107741100A (en) * | 2017-10-27 | 2018-02-27 | 华南理工大学 | A kind of Gas-supplying enthalpy-increasing indirect refrigeration system for train air-conditioning |
| CN111536708A (en) * | 2019-02-07 | 2020-08-14 | 西克制冷产品有限责任公司 | Cooling system |
| CN213713606U (en) * | 2020-11-10 | 2021-07-16 | 云南道精制冷科技有限责任公司 | Cold and hot combined supply double-effect plate replacement machine set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022100340A1 (en) * | 2020-11-10 | 2022-05-19 | 云南道精制冷科技有限责任公司 | Dual-effect plate exchange unit of combined cooling and heating supply |
| CN116123747A (en) * | 2023-04-14 | 2023-05-16 | 云南道精制冷科技有限责任公司 | Overlapping type cold and hot source unit |
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