CN114251860A - Method for producing steam and refrigerating simultaneously by high-pressure heat pump - Google Patents
Method for producing steam and refrigerating simultaneously by high-pressure heat pump Download PDFInfo
- Publication number
- CN114251860A CN114251860A CN202111631699.8A CN202111631699A CN114251860A CN 114251860 A CN114251860 A CN 114251860A CN 202111631699 A CN202111631699 A CN 202111631699A CN 114251860 A CN114251860 A CN 114251860A
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- China
- Prior art keywords
- steam
- heat pump
- workshop
- air
- refrigerating
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- 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.)
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Abstract
The invention relates to the field of refrigeration and heat pump engineering application, in particular to a method for producing steam and simultaneously refrigerating by a high-pressure heat pump; the specific method comprises the following steps: preparing steam at night; preparing steam while refrigerating in daytime: during daytime refrigeration, hot air in a workshop enters the heat pump by adjusting the air inlet and outlet quantity, the air inlet and outlet speed and the air outlet temperature of the heat pump, the heat of the hot air in the workshop is used for preparing steam, the prepared steam is input into a steam storage tank for storage, cold air after heat recovery enters the workshop for reducing the temperature of the workshop, and the steam stored in the daytime and at night is used for the workshop, so that the steam produced by the heat pump is refrigerated at the same time; through setting up heat preparation steam and daytime cooling in the recovery air preparation steam and in time storing when preparing steam night, the steam that two man-hour sections were stored supplies the workshop to use and makes high pressure heat pump system steam refrigerate simultaneously and realize, should show to have reduced steam preparation and workshop cooling energy consumption, can practice thrift 40 ten thousand kilowatt-hours of electric energy every 2 ten thousand square meters workshops annually.
Description
Technical Field
The invention relates to the field of refrigeration and heat pump engineering application, in particular to a method for producing steam and refrigerating simultaneously by a high-pressure heat pump.
Background
Steam is one of important energy sources in clothing factories, clothes can not be ironed during production, and at present, a great number of clothing enterprises in China still use coal-fired boilers to generate steam. The old boiler has been eliminated and cannot keep pace with the modernization process. The steam generation mode adopts a split mode of a boiler, an ironing table and an iron, and is easy to cause pollution, waste and safety problems.
Most of the current garment factories adopt steam boilers to produce steam, and the method for reducing the steam generation cost only stays at the stage of producing by using off-peak electricity. Even if the steam preparation is performed using off-peak electricity, the energy consumption is still high since all the steam is prepared using electric energy. And the clothing factory still need to cool down the workshop occasionally, all adopt the air conditioner direct cooling at present, further increased the power consumption, increased workshop manufacturing cost. More critical is that: the existing equipment cannot meet the requirement of storing a large amount of steam.
Disclosure of Invention
The purpose of the invention is: the method for producing steam and refrigerating at the same time by the high-pressure heat pump obviously reduces energy consumption of steam preparation and workshop cooling, and can save 40 ten thousand kilowatt-hours of electric energy every 2 ten thousand kilometers of workshops every year.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for producing steam and refrigerating simultaneously by a high-pressure heat pump adopts equipment comprising a cascade heat pump and a steam storage tank, and comprises the following specific steps:
preparing steam at night: when the electricity is off at night, starting a heat pump to prepare steam and inputting the steam into a steam storage tank for storage;
preparing steam while refrigerating in daytime: through the business turn over air output, business turn over wind speed and the air-out temperature of adjusting the heat pump during daytime refrigeration, the hot-air admission heat pump in workshop, its heat is used for the preparation of steam, and the steam input steam holding vessel of preparation stores, and the cold air recovery after the heat recovery gets into the workshop and is used for reducing the workshop temperature, and the steam of daytime and night storage supplies the workshop to use, realizes that heat pump system steam refrigerates simultaneously.
Furthermore, two working conditions of preparing steam at night and preparing steam at the same time by refrigerating at daytime can be switched.
Further, the temperature of the air outlet is not higher than 20 ℃.
Furthermore, the overlapping type heat pump is connected with the workshop through an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are provided with air volume regulating valves.
Further, the steam storage tank is a high-pressure-resistant storage tank, and stores steam by using the phase change principle of water, and the steam storage tank is connected with a pressure gauge.
The technical scheme adopted by the invention has the beneficial effects that:
according to the method for simultaneously refrigerating the steam by the high-pressure heat pump, the steam is prepared at night, the temperature is reduced in the daytime, the heat in the air is recovered, the steam is prepared and stored in time, the steam stored in two working hours is used for a workshop, so that the high-pressure heat pump steam is simultaneously refrigerated, the energy consumption of steam preparation and workshop temperature reduction is obviously reduced, and 40 ten thousand kilowatt hours of electric energy can be saved in every 2 ten thousand square meters of the workshop every year.
Detailed Description
The present invention will be further described with reference to the following embodiments.
A method for producing steam and refrigerating simultaneously by a high-pressure heat pump adopts equipment comprising a cascade heat pump and a steam storage tank, and comprises the following specific steps:
preparing steam at night: when the electricity is off at night, starting a heat pump to prepare steam and inputting the steam into a steam storage tank for storage;
preparing steam while refrigerating in daytime: through the business turn over air output, business turn over wind speed and the air-out temperature of adjusting the heat pump during daytime refrigeration, the hot-air admission heat pump in workshop, its heat is used for the preparation of steam, and the steam input steam holding vessel of preparation stores, and the cold air recovery after the heat recovery gets into the workshop and is used for reducing the workshop temperature, and the steam of daytime and night storage supplies the workshop to use, realizes that heat pump system steam refrigerates simultaneously. The steam storage tank is high pressure resistant storage tank, and the steam storage tank utilizes the phase transition principle of water to save steam, is connected with the manometer on the steam storage tank.
The cascade heat pump comprises a compressor, a condenser, an evaporator and an expansion valve, wherein a mass transfer working medium runs in a unit in a closed mode, the mass transfer working medium and hot air in a workshop entering the heat pump are subjected to heat exchange through the condenser and the evaporator, the recovered heat is used for preparing steam and storing the steam, cold air after the heat is recovered returns to the workshop for cooling, the steam stored during refrigeration and the steam prepared at a night valley electricity time period are supplied to the workshop together, the steam requirement of the workshop can be met, and the purpose of refrigerating the steam by the high-pressure heat pump at the same time is achieved.
According to the invention, the high-pressure steam storage tank is changed and the phase change principle of water is utilized to store steam, so that the storage of the steam prepared in the refrigeration period is realized, and the problem of energy waste of hot air in refrigeration caused by the problem that the steam is difficult to store in the prior art is solved.
The two kinds of operating modes of preparation steam night and daytime refrigeration preparation steam simultaneously in this embodiment can switch over each other, and this structural setting can adjust the operating mode according to the actual need of workshop production to further reduce equipment running cost.
In the embodiment, the temperature of the air outlet is adjusted to be not higher than 20 ℃, so that the rapid cooling in a workshop can be realized.
The overlapping type heat pump in the embodiment is connected with a workshop through the air inlet pipe and the air outlet pipe, and the air inlet pipe and the air outlet pipe are provided with the air volume regulating valves, so that hot air in the workshop can be recycled, the structural requirement on the heat pump is lower, and the control efficiency of the ambient temperature in the workshop is higher.
It should be understood that although the description is made in terms of embodiments, not every embodiment includes only a single claim, and such description is for clarity only, and those skilled in the art will recognize that the embodiments described in the various embodiments can be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A method for producing steam and refrigerating simultaneously by a high-pressure heat pump is characterized in that: the equipment adopted by the method comprises a cascade heat pump and a steam storage tank, and the specific method comprises the following steps:
preparing steam at night: when the electricity is off at night, starting a heat pump to prepare steam and inputting the steam into a steam storage tank for storage;
preparing steam while refrigerating in daytime: through the business turn over air output, business turn over wind speed and the air-out temperature of adjusting the heat pump during daytime refrigeration, the hot-air admission heat pump in workshop, its heat is used for the preparation of steam, and the steam input steam holding vessel of preparation stores, and the cold air recovery after the heat recovery gets into the workshop and is used for reducing the workshop temperature, and the steam of daytime and night storage supplies the workshop to use, realizes that heat pump system steam refrigerates simultaneously.
2. The method for producing steam and simultaneously refrigerating by a high-pressure heat pump according to claim 1, characterized in that: the two working conditions of preparing steam at night and preparing steam at the same time by refrigerating at daytime can be switched.
3. The method for producing steam and simultaneously refrigerating by a high-pressure heat pump according to claim 1, characterized in that: the temperature of the air outlet is not higher than 20 ℃.
4. The method for producing steam and simultaneously refrigerating by an autoclave as claimed in claim 1, wherein: the overlapping type heat pump is connected with the workshop through an air inlet pipe and an air outlet pipe, and air volume adjusting valves are arranged on the air inlet pipe and the air outlet pipe.
5. The method for producing steam and simultaneously refrigerating by an autoclave as claimed in claim 1, wherein: the steam storage tank is a high-pressure-resistant storage tank, and stores steam by using the phase change principle of water, and the steam storage tank is connected with a pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111631699.8A CN114251860A (en) | 2021-12-29 | 2021-12-29 | Method for producing steam and refrigerating simultaneously by high-pressure heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111631699.8A CN114251860A (en) | 2021-12-29 | 2021-12-29 | Method for producing steam and refrigerating simultaneously by high-pressure heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114251860A true CN114251860A (en) | 2022-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111631699.8A Pending CN114251860A (en) | 2021-12-29 | 2021-12-29 | Method for producing steam and refrigerating simultaneously by high-pressure heat pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN114251860A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061710A (en) * | 2014-06-23 | 2014-09-24 | 周永奎 | Method for providing steam power and device thereof |
| CN108387021A (en) * | 2018-05-28 | 2018-08-10 | 天津商业大学 | A kind of classification heat pump steam generation facility |
-
2021
- 2021-12-29 CN CN202111631699.8A patent/CN114251860A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061710A (en) * | 2014-06-23 | 2014-09-24 | 周永奎 | Method for providing steam power and device thereof |
| CN108387021A (en) * | 2018-05-28 | 2018-08-10 | 天津商业大学 | A kind of classification heat pump steam generation facility |
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