CN103411385A - Method for preparing cold-state liquid heat-transfer working medium in area with large temperature difference between day and night - Google Patents
Method for preparing cold-state liquid heat-transfer working medium in area with large temperature difference between day and night Download PDFInfo
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- CN103411385A CN103411385A CN2012105964606A CN201210596460A CN103411385A CN 103411385 A CN103411385 A CN 103411385A CN 2012105964606 A CN2012105964606 A CN 2012105964606A CN 201210596460 A CN201210596460 A CN 201210596460A CN 103411385 A CN103411385 A CN 103411385A
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Abstract
Provided is a method for preparing a cold-state liquid heat-transfer working medium in an area with a large temperature difference between day and night. The method for preparing the cold-state liquid heat-transfer working medium in the area with the large temperature difference between day and night comprises the following steps that (1) a storage tank P2 of a hot-state liquid heat-transfer working medium WR is arranged; (2) the low-temperature atmosphere is used at night, and the WR is indirectly cooled by air through an air cooler P4 to carry out temperature drop to become a WL; (3) the WL is stored into a storage tank P5 of the cold-state liquid heat-transfer working medium W5; (4) when the temperature of the atmosphere rises, the cold-state liquid heat-transfer working medium W5 is pumped out of the storage tank P5 to be used for heat removal in the process of technology heat exchange, then, the cold-state liquid heat-transfer working medium W5 becomes the hot-state liquid heat transfer working medium WR, and the hot-state liquid heat transfer working medium WR is stored into the storage tank P2. The liquid heat transfer working media are circulating water or demineralized water or diesel oil. The method for preparing the cold-state liquid heat-transfer working medium in the area with the large temperature difference between day and night has the advantages that the low-temperature air of different times is used, the evaporation loss of the water is greatly reduced due to the fact that a closed water circulation system is built through huge investment, and the method for preparing the cold-state liquid heat-transfer working medium in the area with the large temperature difference between day and night provides a water-saving way for the occasions which badly lack water but need a large amount of cooling water.
Description
Technical field
The present invention relates to the method that area that a kind of day and night temperature is large prepares cold conditions liquid heat transfer working medium, set up hot liquid working substance WR storage tank P2, utilize the low temperature atmosphere night, WR is cooled as WL by air indirectly by air cooler P4, WL deposits cold conditions liquid working substance W5 storage tank P5 in, when atmospheric air temperature is high, from storage tank P5, extracting cold conditions liquid working substance W5 out becomes hot liquid working substance P2 as liquid heat transfer working medium for after technique heat transfer process P1 heat-obtaining, can be recirculated water, demineralized water, oil product etc. from the liquid heat transfer working medium of P1.
Background technology
Current China builds Coal Chemical Industry industry project just in a large number, it forms great demand to water resource, due to coal resources in China, be distributed in a large number the water-deficient areas such as Xinjiang, the Inner Mongol, Gansu, Ningxia, North Shaanxi, Shanxi, Coal Chemical Industry water and urbanite water consumption, agricultural water, weather keep water, other water for industrial use to form the contention to water resource, have aggravated the contradiction that the original regional water resource just existed lacks.When the electric power of chemical enterprise demand is provided by local thermal power plant in addition, even the steam reconstitution process of electric turbine outlet has been used air cooler, still need to consume a large amount of cooling waters.Usually chemical plant need to consume a large amount of water as raw materials technology.Similar Problems is present in nearly all industrial project, and water resource has become the bottleneck key element of restriction industrial development, and using water wisely has become the approval index of industrial project.
Yet, because the essential purpose of cooling procedure is the migration heat, rather than evaporation water, the loss of water is not inevitable.Usually selecting the direct ingress of air of recirculated water to evaporate water quench, is that its cost is a large amount of evaporation waters of loss in order to reduce the investment of circulating water process.
Therefore, it is considered herein that, in water-deficient area, by the cold lack of water project of circulation, primary selection is few consumption water or does not consume water, so essential selection is indirectly cooling for extensive, and the huge low-temperature level heat that heat recirculated water is carried passes to environment.
A large amount of heat-obtaining fluid class materials available in environment only have water and air, for mega project, it is very common per hour needing 100,000 side's recirculated waters, according to 8000 hours/year working systems, calculate, conversion is for using approximately 800,000,000 sides of the ambient water water yield year, this is almost impossible, but conversion is possible for air, and problem is where to find the Cryogenic air of q.s.
In the large area of day and night temperature, there are a large amount of Cryogenic air night, if can utilize the Low Night Temperature air hot process-stream on cooling daytime, can reach purpose of the present invention.The present invention proposes to change the time, with recirculated water, to make the method for heat carrier with space, realizes significantly water-saving purpose of the present invention.
With directly cooling (recirculated water directly contacts with tempering air) method of routine, compare, this method is set up airtight or semi-hermetic water circulation system by the cost huge fund, decrease the evaporation of water loss, for serious water shortage, still need the occasion of a large amount of cooling waters, the present invention proposes a Measures of Saving Water.
The method of the invention has no report.
The first purpose of the present invention is to propose the method that area that a kind of day and night temperature is large prepares cold conditions liquid heat transfer working medium, and liquid heat transfer working medium can be recirculated water, demineralized water, oil product etc.
Summary of the invention
The area that a kind of day and night temperature is large prepares the method for cold conditions liquid heat transfer working medium, comprise following steps: set up hot liquid heat transfer working medium WR reservoir vessel P2, utilize the low temperature atmosphere night, WR is cooled as WL by air indirectly by air cooler P4, WL deposits cold conditions liquid heat transfer working medium W5 reservoir vessel P5 in, when atmospheric air temperature is high, from reservoir vessel P5, extracting cold conditions liquid heat transfer working medium W5 out becomes hot liquid heat transfer working medium WR for after technique heat transfer process heat-obtaining, and hot liquid heat transfer working medium WR deposits reservoir vessel P2 in.
Liquid heat transfer working medium is recirculated water or demineralized water or diesel oil.
When liquid heat transfer working medium was recirculated water, reservoir vessel was storage tank or tank.
The accompanying drawing explanation
Accompanying drawing is mono-month extreme temperature statistics of 2003～2006 years Xinjiang Nao Maohu, and the whole year is 10～16.7 ℃ of atmosphere temperature-differences, 13 ℃ of mean temperature differences round the clock, and 5～September is 11.7～16.7 ℃ of atmosphere temperature-differences, 14.1 ℃ of mean temperature differences round the clock.
The specific embodiment
Below describe the present invention in detail.
The area that a kind of day and night temperature is large prepares the method for cold conditions liquid heat transfer working medium, comprise following steps: set up hot liquid heat transfer working medium WR reservoir vessel P2, utilize the low temperature atmosphere night, WR is cooled as WL by air indirectly by air cooler P4, WL deposits cold conditions liquid heat transfer working medium W5 reservoir vessel P5 in, when atmospheric air temperature is high, from reservoir vessel P5, extracting cold conditions liquid heat transfer working medium W5 out becomes hot liquid heat transfer working medium WR for after technique heat transfer process heat-obtaining, and hot liquid heat transfer working medium WR deposits reservoir vessel P2 in.
Liquid heat transfer working medium is recirculated water or demineralized water or diesel oil.
When liquid heat transfer working medium was recirculated water, reservoir vessel was storage tank or tank.
With regular circulation water field recirculated water, using air simultaneously to carry out cooling method compares, the present invention has used the Cryogenic air in different time, its advantage is: set up airtight or semi-hermetic water circulation system by the cost huge fund, decrease the evaporation of water loss, for serious water shortage, still need the occasion of a large amount of cooling waters, the present invention proposes a Measures of Saving Water.
Reference examples 1
Nao Maohu town, Hami City Yiwu County, Xinjiang Uygur Autonomous Regions, belong to the Extreme drought water-deficient area, but locality has abundant coal resources, in locality, build certain large-scale Coal Chemical Engineering Project, the recirculated water consumption reach 60,000 cubes/time, if build Circulating Water Field according to the direct-cooled method of conventional open type, according to annual evaporation loss 1.2%, calculate, evaporated quantity of water be 720 sides/time, according to 8000 o'clock/years working systems, 5,760,000 ton/years of year evaporation capacity, the water unit price is approximately 10 yuan/tons at present, and evaporation water is worth 5,760 ten thousand yuan/year.Project is calculated by operation in 15 years, and water unit price average is by 15 yuan/tons, and this is accumulated as 12.96 hundred million yuan.From the whole society, spent huge investment, consumed water resource, threatened the development that other must the water consumption industrial project, the purposes of water resource should be civilian, agricultural irrigation, raw material of industry etc.
If the water amount of blowdown of computation cycles water, by 0.4% of quantity of circulating water be calculated as 240 tons/time, these water need to return to Circulating Water Field and use after desalination, cost of water treatment is 2 yuan/tons, adds up to 3,840,000 yuan/year, approximately 4,000,000 yuan/year of dosing expenses.
Embodiment 1
In order under the suitable huge investment condition of cost, to avoid water consumption, retain existing water resource, based on reference examples, enforcement the present invention is as follows: set up hot recirculated water WR storage tank P2 (capacity 100 ten thousand steres), utilize the low temperature atmosphere night, temperature is that the WR of 40 ℃ is indirectly cooled to 30 ℃ and becomes WL by 22 ℃ of air by air cooler P4, WL deposits cold conditions liquid heat transfer working medium storage tank P5 (capacity 100 ten thousand steres) in, when daytime, atmospheric air temperature was high, extract cold conditions liquid heat transfer working medium WL out for the process unit heat transfer process from storage tank P5.Liquid heat transfer working medium can be recirculated water, demineralized water, oil product etc.
Accompanying drawing is mono-month extreme temperature statistics of 2003～2006 years Xinjiang Nao Maohu, and the whole year is 10～16.7 ℃ of atmosphere temperature-differences, 13 ℃ of mean temperature differences round the clock, and 5～September is 11.7～16.7 ℃ of atmosphere temperature-differences, 14.1 ℃ of mean temperature differences round the clock.
The WR temperature is 42 ℃, and the WL temperature is 32 ℃, and air cooler P4 asks consideration by 6 o'clock/days whens work, air cooler P4 work flow rate be 180,000 cubes/time, air enters the air cooler temperature by 25 ℃ of considerations.
Construction investment, approximately 400,000,000 yuans of P2 systems, 4.5 hundred million yuans of P4 systems (air-cooled power consumption), 400,000,000 yuans of P5 systems, liquid heat transfer working medium is pressed recirculated water consideration, 8.8 ten thousand kilowatts of air cooler P4 blower fan electrical power, average 2.2 ten thousand kilowatts of whole day, 0.6 yuan of electricity price/degree, 1.32 ten thousand yuan of electricity prices/time.
Reference examples 1 characteristics " 5,760,000 ton/years of annual water consumptions are spent, and add up to 1,300,000,000 yuan in 15 years ".
Embodiment 1 characteristics " first drop into 12.5 hundred million yuan, 5,760,000 ton/years of deutomerite water-savings ", are equivalent to 23 yuan and buy 1 ton of water.
The present invention has realized the target of low water consumption.
Embodiment 2
Based on embodiment 1, storage tank P2, storage tank P5, change airtight or semi-hermetic pond form into.
Based on embodiment 2, the storage tank P2, the storage tank P5 that build, change semi-hermetic tank P2, semi-hermetic tank tank P5 into, pond is covered by factory building, and light transmissive material is used on factory building top, and factory building arranges personnel's inlet/outlet (can close, open), non-water surface ecological region planting plant or trees in factory building, form the sightseeing place, or can introduce CO2 gas, produce agricultural product or economic plants by photosynthesis.
The tank P2 of take is example, and 4 meters of the pond depth of waters, maximum water surface area are 250,000 square metres (375 mus), is equivalent to 500 meters * 500 meters waters.
Tank P2 and P5, suppose 4 meters of the pond depth of waters, and maximum water surface area is 500,000 square metres (750 mus), is equivalent to 1000 meters * 500 meters waters.
Claims (3)
1. the large area of day and night temperature prepares the method for cold conditions liquid heat transfer working medium, comprise following steps: set up hot liquid heat transfer working medium WR reservoir vessel P2, utilize the low temperature atmosphere night, WR is cooled as WL by air indirectly by air cooler P4, WL deposits cold conditions liquid heat transfer working medium W5 reservoir vessel P5 in, when atmospheric air temperature is high, from reservoir vessel P5, extracting cold conditions liquid heat transfer working medium W5 out becomes hot liquid heat transfer working medium WR for after technique heat transfer process heat-obtaining, and hot liquid heat transfer working medium WR deposits reservoir vessel P2 in.
2. method according to claim 1, it is characterized in that: liquid heat transfer working medium is recirculated water or demineralized water or diesel oil.
3. method according to claim 1, it is characterized in that: liquid heat transfer working medium is recirculated water, reservoir vessel is storage tank or tank.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240918A (en) * | 1998-07-04 | 2000-01-12 | 陆健 | Cyclone-type energy conversion system |
| CN1350148A (en) * | 2000-10-23 | 2002-05-22 | 王智勇 | Heat energy utilizing method and system |
| CN1737437A (en) * | 2004-08-16 | 2006-02-22 | 王武生 | Energy saving method for air conditioner and energy saving air conditioning system |
| CN1789877A (en) * | 2004-12-17 | 2006-06-21 | 尹学军 | Heat pipe device utilizing natural cold energy and application thereof |
| CN101059287A (en) * | 2006-04-19 | 2007-10-24 | 梅成波 | Heat utilization system for atmosphere temperature difference |
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- 2012-12-25 CN CN2012105964606A patent/CN103411385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240918A (en) * | 1998-07-04 | 2000-01-12 | 陆健 | Cyclone-type energy conversion system |
| CN1350148A (en) * | 2000-10-23 | 2002-05-22 | 王智勇 | Heat energy utilizing method and system |
| CN1737437A (en) * | 2004-08-16 | 2006-02-22 | 王武生 | Energy saving method for air conditioner and energy saving air conditioning system |
| CN1789877A (en) * | 2004-12-17 | 2006-06-21 | 尹学军 | Heat pipe device utilizing natural cold energy and application thereof |
| CN101059287A (en) * | 2006-04-19 | 2007-10-24 | 梅成波 | Heat utilization system for atmosphere temperature difference |
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