CN100359249C - Single and multi-stage indirect evaporative cooling method capable of repeatedly utilizing wet energy - Google Patents
Single and multi-stage indirect evaporative cooling method capable of repeatedly utilizing wet energy Download PDFInfo
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- CN100359249C CN100359249C CNB2005100180823A CN200510018082A CN100359249C CN 100359249 C CN100359249 C CN 100359249C CN B2005100180823 A CNB2005100180823 A CN B2005100180823A CN 200510018082 A CN200510018082 A CN 200510018082A CN 100359249 C CN100359249 C CN 100359249C
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Abstract
The present invention relates to a single and multi-stage indirect evaporating and cooling method by repeatedly utilizing wet energy, which effectively achieves the purposes of sufficiently utilizing the wet energy in air control and energy consumption reduction. The present invention has the technical scheme of using a working and an outputting media, wherein the outputting medium passes through a dry channel at one side of a dividing wall type channel, is implemented with heat absorption and temperature drop by the working medium and water which simultaneously reversely flow in a wet channel at the other side, and has no change in wet content; the working medium firstly passes through the dry channel, and is implemented with heat absorption by spraying saturated airflow passing through the wet channel at the other side; the working medium enters the wet channel after temperature drop, is saturated by the water sprayed reversely so that partial water is evaporated so as to orderly cool the outputting medium in the dry channel at the other side and the working medium, and then both the working medium and the outputting medium are discharged. When the working medium and the outputting medium are under the condition of certain air and wind quantity, the outlet temperature for outputting airflow is lower than that of an original wet ball, and approaches to dew-point temperature so that the efficiency of the wet ball is more than 100%. Thus, the present invention has the advantages of energy consumption reduction, low cost and good air conditioning effect, and is popularized and applied to benefit the society.
Description
One, technical field
The present invention relates to a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy of technical fields such as air conditioning, heat transfer.
Two, background technology
To the size of the quality of regulating the living environment air quality and energy consumption is basic demand to air-conditioner, but present indirect evaporative cooling method to using in the air conditioning, exist chilling temperature low inadequately, working air current is wet not to be made full use of, unit cools off water consumption, blast consumption is big, i.e. cooling point is high, power consumption is high, it not only directly influences the air conditioning quality, and operating cost is very high, be unfavorable for the development and the popularization and application of industry, therefore, the improvement of method now pressed for solution with innovation.
Three, summary of the invention
Based on the problems referred to above, the invention provides a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy, effectively solve the problem that makes full use of and reduce power consumption of wet energy in the air conditioning, the technical scheme of its solution is, with two media (can be to be divided into two strands with a kind of medium, also can be two bursts of different mediums), a kind of output medium that is called as, a kind of working media that is called as.Its working media as required, it can be sub-thread, also can be that multiply is divided into some strands (promptly singly more than two strands, multi-stage indirect evaporative), the output medium is by a side of dividing wall type passage, this side and opposite side can only conduct heat can not mass transfer, be called dry passage, when the output medium passes through dry passage, at first passed through dry passage by the working media of opposite side (being called as wet channel) reverse flow simultaneously and water absorbing and cooling temperature working media, by the saturated air-flow absorbing and cooling temperature of spray that the wet channel of opposite side passes through, the working media absolute moisture content is constant, wet-bulb temperature reduces, then, the working media after the cooling enters wet channel, by the water saturation of reverse spray, the part water evaporates, absorb heat of vaporization, output medium in the opposite side dry passage and working media itself are lowered the temperature successively, discharge then; Equally, wet channel wall (opposite side of dry passage wall) has been done specially treateds such as plucking, to tangle moisture as far as possible, keeps the wet channel wall moistening, has also increased the contact area of conduit wall and working media simultaneously.
The output medium can be a gas, also can be liquid.When working media, when the output medium is all air, under the certain situation of air quantity, the outlet temperature of product air-flow, can reach and be lower than its original wet bulb temperature, near dew-point temperature, under the constant situation of absolute moisture content, wet bulb efficient surpasses 100%, thereby greatly reduce the cooling point, reduced energy consumption, operating cost is low, and air conditioning is effective, be easy to apply, make and benefit society.
Four, description of drawings
Fig. 1 is rear-mounted a kind of single and multi-stage indirect evaporative cooling method schematic diagram that reuses wet energy.
Fig. 2 is a kind of single and multi-stage indirect evaporative cooling method schematic diagram that reuses wet energy of forward type.
Fig. 3 is rear-mounted a kind of single and multi-stage indirect evaporative cooling method example that reuses wet energy.
Five, the specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
Shown in Fig. 1-3, the single-stage that the inventive method is divided into rear-mounted and forward type with multistage two kinds, bottom is an example with single-stage accumulation of energy shown in Figure 1, and the performance that it is concrete is described, be divided into the compressor working medium course of work, air workflow and dehumidification solution workflow, existing division is as follows:
Working media (air-flow):
Working media (air-flow) is divided into two-stage: one-level working air current 2-1, secondary work air-flow 3-1, enter dry passage zone separately respectively, the working air current of each grade successively by the working air current of wet channel (they self) through spray, the part water evaporates also absorbs heat of vaporization, temperature reduces, by the wet channel wall, with the one-level working air current 2-1 in the partition 6 one side dry passages, secondary work air-flow 3-1 cooling, but water capacity is constant, form the middle working air current 2-2 of one-level respectively, working air current 3-2 in the middle of the secondary, enter wet channel then successively, enter working air current 2-2 in the middle of the one-level behind the wet channel, working air current 3-2 in the middle of the secondary, fully contact with the water 4 of reverse spray in the wet channel, and the part moisture evaporated taken out of, water evaporates, absorb heat of vaporization, simultaneously with high temperature gas flow 1-1 in working air current in the wet channel and the opposite side dry passage and one-level working air current 2-1, secondary work air-flow 3-1 cools off successively, working air current (2-2) in the middle of the one-level in the cooling way, working air current (3-2) temperature in the middle of the secondary, humidity constantly increases, while absorbing path opposite side high temperature gas flow (1-1), one-level working air current (2-1), the heat of secondary work air-flow (3-1), enthalpy progressively improves, and finally forms one-level hot operation air-flow (2-3), secondary hot operation air-flow (3-3) is discharged;
The output air-flow:
High temperature gas flow 1-1 enters dry passage, successively by in the opposite side wet channel by working air current 2-2 cooling in the middle of working air current 3-2, the one-level in the middle of the saturated secondary, this process not mass transfer that conducts heat forms output air-flow 1-2;
The current workflow:
Recirculated water 4 sprays in wet channel after pump 5 pressurizations, fully contact with working air current 3-2 in the middle of the middle working air current 2-2 of the one-level of reverse flow, the secondary, simultaneously, by the wet channel wall, carry out heat exchange with the high temperature gas flow 1-1 that flows in the dry passage of opposite side, part moisture is subjected to thermal evaporation, take away heat of vaporization, do not have the water of evaporation to fall into kerve, circulated sprinkling work after the pump pressurization, simultaneously, the water in the tank is replenished by the external world.
Illustrate:
Be example explanation course of work (see figure 3) with rear-mounted, two-stage working media indirect evaporation below.
Condition is: working media, output medium are that the identical air of state----dry-bulb temperature is 30 ℃, absolute moisture content 8g.
The working media course of work:
Dry-bulb temperature is 30 ℃, the working air current of absolute moisture content 8g is divided into two-stage, enter dry passage zone separately respectively, the working air current of each grade successively by the working air current of wet channel (they self) through spray, the part water evaporates also absorbs heat of vaporization, temperature reduces, by the wet channel wall, with (30 ℃ of the one-level working air current 2-1 in the partition 6 opposite side dry passages, absolute moisture content 8g), (30 ℃ of secondary work air-flow 3-1, absolute moisture content 8g) cooling, but water capacity is constant, form (19 ℃ of the middle working air current 2-2 of one-level respectively, absolute moisture content 8g), working air current 3-2 is (21 ℃ in the middle of the secondary, absolute moisture content 8g), enter wet channel successively, enter working air current 2-2 in the middle of the one-level behind the wet channel, working air current 3-2 in the middle of the secondary, with working air current in the wet channel and high temperature gas flow 1-1 and the one-level working air current 2-1 in the side dry passage in addition, secondary work air-flow 3-1 cools off successively, temperature in the cooling way, humidity constantly increases, enthalpy progressively improves, (22 ℃ of the final one-level hot operation air-flow 2-3 that forms, 89%), (28 ℃ of secondary hot operation air-flow 3-3,72%) discharges.
Output air-flow workflow:
High temperature gas flow 1-1 (30 ℃ of dry bulbs, water capacity 8g/kg), enter dry passage, successively by in the opposite side wet channel by working air current 2-2 cooling in the middle of working air current 3-2, the one-level in the middle of the saturated secondary, this process not mass transfer that conducts heat forms output air-flow 1-2 (16 ℃ of dry bulbs, water capacity 8g/kg).
Water periodic duty flow process:
Recirculated water 4 sprays in wet channel after pump 5 pressurizations, fully contact with working air current 3-2 in the middle of the middle working air current 2-2 of the one-level of reverse flow, the secondary, simultaneously, by the wet channel wall, carry out heat exchange with the high temperature gas flow 1-1 that flows in the dry passage of opposite side, part moisture is subjected to thermal evaporation, take away heat of vaporization, do not have the water of evaporation to fall into kerve, rework behind pump, the water in the tank is replenished by the external world.
Need to prove that mobile, the course of work of water are isolated fully with dry passage, promptly moisture can not enter in the dry passage.
Figure 2 shows that the technological process of the wet energy of forward type recycling, provide by Fig. 2:
Working media (air-flow):
Working media divides two-stage (thigh): one-level working air current 2-1, secondary work air-flow 3-1 enters dry passage zone separately respectively, the working air current of each grade is successively by the working air current of wet channel (they self) spray, the part water evaporates also absorbs heat of vaporization, temperature reduces, by the wet channel wall with the one-level working air current 2-1 in the opposite side dry passage, secondary work air-flow 3-1 cooling, water content is constant, form the middle working air current 2-2 of one-level respectively, working air current 3-2 in the middle of the secondary, enter wet channel, enter the middle working air current 2-2 of one-level of wet channel, in the middle of the secondary in working air current 3-2 and the wet channel water 4 of reverse spray fully contact, and the part moisture evaporated taken out of, water evaporates, absorb heat of vaporization, simultaneously with working air current in the wet channel and opposite side dry passage one-level working air current 2-1, secondary work air-flow 3-1 cooling finally forms one-level hot operation air-flow 2-3, secondary hot operation air-flow 3-3 discharges;
The output air-flow:
High temperature gas flow 1-1 enters dry passage, is cooled off by working air current 3-2 in the middle of working air current 2-2, the secondary in the middle of the saturated one-level in the wet channel of another wet channel and this dry passage bottom, forms output air-flow 1-2:
Current work:
Recirculated water 4 sprays in wet channel after pump 5 pressurizations, fully contact with working air current 3-2 in the middle of the middle working air current 2-2 of the one-level of reverse flow, the secondary, simultaneously, by the wet channel wall, carry out heat exchange with the high temperature gas flow 1-1 that flows in the dry passage of opposite side, part moisture is subjected to thermal evaporation, take away heat of vaporization, there is not evaporation water to fall into kerve, (forward type is the same with rear-mounted working condition basically in periodic duty after pump pressurization, equipment is installed the difference on the order, i.e. dry passage position difference, the essence effect is the same).For the moisture that tangle, medium channel one side and wet channel wall will be done specially treateds such as plucking more, and the forward and backward temperature of output air-flow cooling procedure reduces, and absolute moisture content is constant; Working media and output medium can be equal state, also can be different conditions, can be with a kind of fluid, also can be different fluid; The working media indirectly position of cooling can be arranged in before the output medium is cooled, and also can be arranged in after the output medium is cooled, and the indirect evaporation of working media can be a single-stage, also can be above multistage of two-stage or two-stage; Working media is earlier by passive indirect cooling, is initiatively saturated cooling then, and in the passive indirect cooling, working media is that it that be recycled to opposite side self sprays saturated cooling;
Said dry passage and wet channel are made up of a plurality of separate passage aisles respectively, dry passage and wet channel cross arrangement that these are made up of many passage aisles.Its dried wet channel wall can be various fibrous materials, plastics, also can be metal material etc.
In a word, by above-mentioned situation as can be seen, the present invention adopts working media and output medium, the single-stage or the multi-stage indirect evaporative of the wet energy of recycling, the cooling be used for air conditioning, realize energy-efficient, its method uniqueness, innovation, the output medium can be a gas, can be liquid also, work as working media, when the output medium is all air, under the certain situation of air quantity, the outlet temperature of product air-flow after tested, can reach and be lower than its original wet bulb temperature, near dew-point temperature, under the constant situation of absolute moisture content, wet bulb efficient surpasses 100%, energy-conservation new way has been opened up in the recycling of wet energy, and beyond thought huge social effect and economic worth are arranged.
Claims (6)
1, a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy, it is characterized in that being, working air current is divided into two-stage: one-level working air current (2-1), secondary work air-flow (3-1), enter dry passage zone separately respectively, the working air current of each grade successively by the working air current of wet channel through spray, the part water evaporates also absorbs heat of vaporization, temperature reduces, by the wet channel wall, with the one-level working air current (2-1) in partition (6) the one side dry passages, secondary work air-flow (3-1) cooling, form the middle working air current (2-2) of one-level respectively, working air current (3-2) in the middle of the secondary, enter wet channel then successively, enter working air current (2-2) in the middle of the one-level behind the wet channel, working air current (3-2) in the middle of the secondary, fully contact with the water (4) of reverse spray in the wet channel, and the part moisture evaporated taken out of, water evaporates, absorb heat of vaporization, simultaneously with high temperature gas flow (1-1) in working air current in the wet channel and the opposite side dry passage and one-level working air current (2-1), secondary work air-flow (3-1) cools off successively, working air current (2-2) in the middle of the one-level in the cooling way, working air current (3-2) temperature in the middle of the secondary, humidity constantly increases, while absorbing path opposite side high temperature gas flow (1-1), one-level working air current (2-1), the heat of secondary work air-flow (3-1), enthalpy progressively improves, and finally forms one-level hot operation air-flow (2-3), secondary hot operation air-flow (3-3) is discharged; High temperature gas flow (1-1) enters dry passage, is cooled off by working air current (2-2) in the middle of working air current (3-2), the one-level in the middle of the saturated secondary in the opposite side wet channel successively, forms output air-flow (1-2); Recirculated water (4) sprays in wet channel after pump (5) pressurization, fully contact with working air current (3-2) in the middle of the middle working air current (2-2) of the one-level of reverse flow, the secondary, simultaneously, by the wet channel wall, carry out the heat exchange evaporation with the high temperature gas flow (1-1) that flows in the dry passage of opposite side, not have the water of evaporation to fall into kerve, circulated sprinkling work after pump pressurizes, simultaneously, the water in the tank is replenished by the external world.
2, a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy according to claim 1 is characterized in that, the conduit wall of said working media wet channel one side will be made plucking and handle.
3, a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy according to claim 1, it is characterized in that said working media and output medium can be equal state, also can be different conditions, can be with a kind of fluid, also can be different fluid.
4, a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy according to claim 1, it is characterized in that, the said working media position of cooling indirectly can be arranged in before the cooling output medium, also can be arranged in after the cooling output medium, the indirect evaporation of working media can be a single-stage, also can be above multistage of two-stage or two-stage.
5, a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy according to claim 1, it is characterized in that, said dry passage and wet channel are made up of a plurality of separate passage aisles respectively, dry passage and wet channel cross arrangement that these are made up of many passage aisles.
6, a kind of single and multi-stage indirect evaporative cooling method that reuses wet energy according to claim 1 is characterized in that said conduit wall is fibrous material or plastics or metal material.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100180823A CN100359249C (en) | 2005-10-10 | 2005-10-10 | Single and multi-stage indirect evaporative cooling method capable of repeatedly utilizing wet energy |
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| CNB2005100180823A CN100359249C (en) | 2005-10-10 | 2005-10-10 | Single and multi-stage indirect evaporative cooling method capable of repeatedly utilizing wet energy |
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| CN100359249C true CN100359249C (en) | 2008-01-02 |
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| US20140014289A1 (en) * | 2012-07-11 | 2014-01-16 | Kraton Polymers U.S. Llc | Enhanced-efficiency energy recovery ventilation core |
| CN103292400A (en) * | 2013-06-17 | 2013-09-11 | 上海理工大学 | Dew point indirect evaporative cooling air-conditioner system for radiation refrigeration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044527A (en) * | 1989-01-24 | 1990-08-08 | 十月革命50周年基辅工业大学 | Apparatus for cooling by indirect evaporation of gas |
| CN1428564A (en) * | 2001-12-27 | 2003-07-09 | 袁一军 | Air conditioning method for simultaneously removing humidity and cooling and its equipment |
| CN1508483A (en) * | 2002-12-16 | 2004-06-30 | 清华大学 | Air dehumidifying and cooling device with haet recovery |
| CN1542356A (en) * | 2003-04-30 | 2004-11-03 | 清华大学 | Complete heat exchange method by using solvent as medium and apparatus thereof |
| CN1554921A (en) * | 2003-12-21 | 2004-12-15 | 袁一军 | Multistage regenerating type multiway evaporation cooling method and its heat exchanger |
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2005
- 2005-10-10 CN CNB2005100180823A patent/CN100359249C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044527A (en) * | 1989-01-24 | 1990-08-08 | 十月革命50周年基辅工业大学 | Apparatus for cooling by indirect evaporation of gas |
| CN1428564A (en) * | 2001-12-27 | 2003-07-09 | 袁一军 | Air conditioning method for simultaneously removing humidity and cooling and its equipment |
| CN1508483A (en) * | 2002-12-16 | 2004-06-30 | 清华大学 | Air dehumidifying and cooling device with haet recovery |
| CN1542356A (en) * | 2003-04-30 | 2004-11-03 | 清华大学 | Complete heat exchange method by using solvent as medium and apparatus thereof |
| CN1554921A (en) * | 2003-12-21 | 2004-12-15 | 袁一军 | Multistage regenerating type multiway evaporation cooling method and its heat exchanger |
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