CN110771520A - New exhaust air heat recovery device and method suitable for experimental animal room - Google Patents
New exhaust air heat recovery device and method suitable for experimental animal room Download PDFInfo
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- CN110771520A CN110771520A CN201911031065.1A CN201911031065A CN110771520A CN 110771520 A CN110771520 A CN 110771520A CN 201911031065 A CN201911031065 A CN 201911031065A CN 110771520 A CN110771520 A CN 110771520A
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- 238000011084 recovery Methods 0.000 title claims abstract description 36
- 238000010171 animal model Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 19
- 230000005494 condensation Effects 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims abstract description 17
- 230000008020 evaporation Effects 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 15
- 238000012864 cross contamination Methods 0.000 claims abstract description 6
- 239000008358 core component Substances 0.000 claims abstract description 3
- 238000012546 transfer Methods 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 7
- 241001465754 Metazoa Species 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 238000002309 gasification Methods 0.000 claims 2
- 239000012530 fluid Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/02—Pigsties; Dog-kennels; Rabbit-hutches or the like
- A01K1/03—Housing for domestic or laboratory animals
- A01K1/031—Cages for laboratory animals; Cages for measuring metabolism of animals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/02—Pigsties; Dog-kennels; Rabbit-hutches or the like
- A01K1/035—Devices for use in keeping domestic animals, e.g. fittings in housings or dog beds
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Behavior & Ethology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- General Health & Medical Sciences (AREA)
- Housing For Livestock And Birds (AREA)
Abstract
A new exhaust air heat recovery device and method suitable for an experimental animal room relate to the technical field of new exhaust air heat recovery. The core component of the device is a flat micro heat pipe array heat exchanger (1), a partition plate (2) is arranged at the middle height position in the device, a heat recovery unit is divided into an upper part and a lower part, the upper part is a fresh air duct, and the fresh air duct comprises a fresh air inlet section (14), a first air volume adjusting valve (15), a first damping layer (16), a condensation section (3) of the flat micro heat pipe array heat exchanger, a fresh air outlet section (17) and an axial flow fan (18); the lower part of the partition board is provided with an exhaust air duct which comprises an exhaust air inlet section (19), a second air volume adjusting valve (20), a second damping layer (21), an evaporation section (4) of the flat micro heat pipe array heat exchanger (1), an exhaust air outlet section (22) and a centrifugal fan (23); the device combines the flat micro heat pipe array and the fins, and has no cross contamination.
Description
Technical Field
The invention relates to the technical field of fresh air exhaust heat recovery, in particular to the technical field of fresh air exhaust heat recovery suitable for an experimental animal house.
Background
The existing new exhaust air heat recovery technology for experimental animal houses mainly comprises the following steps: the system comprises a plate type heat exchanger, an intermediate refrigerant type sensible heat exchanger, a solution type total heat recovery device, a common liquid absorption core heat pipe heat exchanger, a separated heat pipe heat exchanger and the like. The heat exchange mode of the plate heat exchanger is sensible heat exchange, the heat recovery efficiency is 50% -60%, and due to the limit of the processing technology, 0% -5% air leakage rate may exist, so that certain cross pollution exists in fresh air exhaust. The intermediate refrigerant sensible heat exchanger has temperature difference loss due to the use of intermediate media, so that the general heat exchange efficiency is lower than 50%, and a secondary refrigerant circulating pump needs to be arranged to consume extra power. The solution spraying of the solution type total heat recovery device can bring particulate matters and impurities in the exhaust air into the solution, so that certain requirements are met on the cleanliness of the exhaust air. In the common wick heat pipe heat exchanger, because the fresh air exhaust is respectively positioned at two sides of the heat pipe, a small amount of fresh air exhaust cross pollution may exist according to the processing level. The separated heat pipe heat exchanger is connected through the ascending pipe and the descending pipe, and the air on the new air exhaust side is not directly contacted, so that the cross contamination between the new air exhaust can be avoided, but the existing heat exchanger of the type has a complex structure and low heat recovery efficiency. In order to overcome the problems of low heat recovery efficiency, cross pollution of newly exhausted air and the like in the prior art and reasonably and efficiently recover the newly exhausted air heat of the experimental animal room, the invention combines the advantages of the prior art and develops a novel cross-pollution-free experimental animal room newly-exhausted air heat recovery device by combining the flat micro heat pipe array and the fins.
Disclosure of Invention
The invention aims to provide a fresh air exhaust heat recovery device and a method suitable for an experimental animal room, wherein the device is based on the super heat conductivity of a flat micro heat pipe array, and the flat micro heat pipe array is firstly applied to the field of fresh air exhaust heat recovery of the experimental animal room.
Based on the efficient heat conduction characteristic of the flat micro heat pipe array, the heat recovery device of the flat micro heat pipe array, which is suitable for the experimental animal room and can avoid cross pollution of fresh air and exhausted air, is researched and developed. The specific technical scheme is as follows:
a fresh air exhaust heat recovery device suitable for use in an animal house, as shown in fig. 1, comprising: the heat exchanger comprises a flat micro heat pipe array heat exchanger, a partition plate, an evaporation section and a condensation section. The structure of the flat micro heat pipe heat exchanger is shown in figure 2. The method is characterized in that: the flat micro heat pipe array heat exchanger is divided into two parts, namely an evaporation section and a condensation section, by the partition plate, so that fluids on two sides are prevented from being mixed in a cross mode. The heat exchanger is respectively used for realizing the heat transfer from high-temperature air to low-temperature air when the low-temperature fluid and the low-temperature fluid flow through the heat exchanger simultaneously, thereby achieving the purpose of heat exchange.
Compared with the prior art, the invention has the beneficial effects that: 1. compared with the existing flat heat pipe and a single micro heat pipe, the flat micro heat pipe array has stronger heat conduction performance. 2. The air on both sides of the heat pipe exchanger realizes tube external fin, namely the fins are welded outside the heat pipe, so that the space is better utilized to arrange a heat transfer surface, the compactness of the equipment is improved, the heat dissipation area is greatly increased, and the whole heat transfer process is strengthened. 3. In the heat pipe type heat exchange device, because the partition plate is arranged, the two fluid channels are separated to some extent, the fluids at two sides can be prevented from being mixed with each other, and the cross contamination between new air and exhausted air is avoided. 4. When the shell wall of a certain position of a certain end of the heat pipe element is damaged, the fluid on the two sides of the heat exchange device is still separated by the shell wall of the other end of the heat pipe element, and leakage cannot occur. The application range of the heat pipe type heat exchange device is widened to a certain extent, and the heat exchange device can be used for heat exchange between two fluids with greatly different flow rates, temperatures and cleaning degrees. This is not the case with other forms of heat exchange apparatus. 5. The micro heat pipe mainly exchanges heat by phase change heat transfer in the working process, the speed of vapor fluid in the evaporation section flowing to the condensation section is high, and the isothermal performance is good. In addition, the heat recovery device also has the characteristics of simple structure, low manufacturing cost, small unit volume, light weight, strong controllability, simple operation, low maintenance cost, short cost recovery period and the like.
Drawings
FIG. 1 is a diagram of a heat recovery device with a flat micro heat pipe array.
In the figure: (1) the flat micro heat pipe array heat exchanger (2) comprises a partition plate (3) and a condensation section (4) and an evaporation section.
FIG. 2 is a detailed view of a flat micro heat pipe array heat exchanger
In the figure: (5) refrigerant (6) microchannel (7) louvered fin (8) air.
FIG. 3 is a schematic diagram of the operation of a flat micro heat pipe
In the figure: (3) a condensing section (4), an evaporating section (5), a refrigerant (9), a heat source (10), a heat dissipation (11), a cavity (12), a heat pipe porous core (13) and a pipe shell
Fig. 4 is an overall view of the heat recovery unit.
In the figure: (1) the flat micro heat pipe array heat exchanger (2) comprises a partition plate (3), a condensation section (4), a fresh air inlet section (14), a first air volume adjusting valve (16), a first damping layer (17), a fresh air outlet section (18), an axial flow fan (19), an exhaust air inlet section (20), a second air volume adjusting valve (21), a second damping layer (22), an exhaust air outlet section (23), a centrifugal fan (24), an outdoor animal room feeding room (25).
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the invention provides a technical scheme that: a new exhaust heat recovery device suitable for an experimental animal room, which is shown in figure 1. The method comprises the following steps: the heat exchanger comprises a flat micro heat pipe array heat exchanger (1), a partition plate (2), a condensation section (3) and an evaporation section (4).
The device is applied to an air conditioning system of an experimental animal room, and the new exhaust heat recovery unit shown in figure 4 is obtained. The method comprises the following steps: the heat exchanger comprises a flat micro heat pipe array heat exchanger (1), a partition plate (2), a condensation section (3), an evaporation section (4), a fresh air inlet section (14), a first air volume adjusting valve (15), a first damping layer (16), a fresh air outlet section (17), an axial flow fan (18), an air exhaust inlet section (19), an air volume adjusting valve (20), a second damping layer (21), an air exhaust outlet section (22), a centrifugal fan (23), an outdoor unit (24) and an animal house breeding room (25).
The whole heat recovery unit (figure 4) is in a cuboid shape, the core component of the heat recovery unit is a flat micro heat pipe array heat recovery device (figure 1), a partition plate (2) is arranged at the middle height in the unit, the heat recovery unit is divided into an upper part and a lower part, the upper part is a fresh air duct, and a fresh air inlet section (14), a first air volume adjusting valve (15), a first damping layer (16), a condensation section (3) of the flat micro heat pipe array heat exchanger (1), a fresh air outlet section (17) and an axial flow fan (18) are sequentially arranged in the fresh air duct from left to right. The lower part of the clapboard is an exhaust air duct which sequentially comprises an exhaust air inlet section (19), a second air volume adjusting valve (20), a second damping layer (21), an evaporation section (4) of the flat micro heat pipe array heat exchanger (1), an exhaust air outlet section (22) and a centrifugal fan (23) from right to left. The partition plate separates the two air ducts to prevent cross contamination of the fresh air exhaust. The damping layer has certain filtering action to the air on the one hand, prevents that heat pipe exchanger from blockking up and influencing the heat transfer effect, and on the other hand also has certain effect of flow equalizing, guarantees the homogeneity of air current.
The specific implementation process is as follows:
fresh air outside (24) is filtered by a first damping layer (16) from a fresh air inlet section (14) and then reaches a condensation section (3) of the flat micro heat pipe array heat exchange device, absorbs heat released by condensation of working media in heat pipes to realize temperature rise, and is sent to a fresh air outlet section (17) and then reaches an animal room feeding room (25) by an axial flow fan (18); indoor exhaust air passes through the exhaust air inlet section (19) and the second damping layer (21) and then reaches the evaporation section (4) of the heat pipe heat exchanger, working medium liquid in the heat pipe absorbs heat of the exhaust air, is evaporated and gasified to rise to the condensation section (3), and the temperature of the exhaust air is reduced after the exhaust air is absorbed by heat, and the exhaust air is sent to the exhaust air outlet section (22) by the centrifugal fan (23) and then reaches the outdoor space (24). The invention has the innovation that the flat micro heat pipe array and the radiating fins are combined and applied to the heat pipe type heat exchanger, so that the space is better utilized to arrange a heat transfer surface, and the whole heat transfer process is strengthened.
The heat transfer process inside the flat micro-heat pipe is shown in fig. 3: the refrigerant (5) evaporates and gasifies after the evaporation section (4) absorbs the heat of the heat source (9), the gas carrying a large amount of heat enters the condensation section (3), the heat is liquefied and dissipated heat (10) through the gas and is transmitted to the cold source, the working medium liquid flows back under the action of gravity and capillary force of the microgroove structure, the working medium liquid returns to the evaporation section again and continues to absorb heat and gasify from the heat source, and therefore heat exchange circulation is carried out, and the heat source is continuously transmitted to the cold source through the heat source.
Effects of the invention
The invention has the beneficial effects that:
(1) the flat micro heat pipe array and the radiating louver fins are effectively combined for the first time based on the super heat conduction performance of the flat micro heat pipe array, and the flat micro heat pipe array and the radiating louver fins are applied to the field of new exhaust air heat recovery of experimental animal houses. The heat recovery efficiency of fresh air exhaust of the experimental animal house in winter and transition season is 70% -90%, and the energy-saving significance is achieved.
(2) The micro heat pipe is divided into two parts by the partition board, and the fresh air and the exhaust air are respectively used for heat exchange, so that cross contamination can not occur when the fresh air and the exhaust air exchange.
(3) The heat recovery device does not need an additional power conveying device, and has the advantages of simple structure, light volume and low process cost.
(3) According to the invention, a test bed is established, various data are tested, and the energy-saving and energy-consumption conditions of the flat micro heat pipe array type heat recovery device are calculated and compared. The flat micro heat pipe array type heat recovery device is applied to a fresh air system of an experimental animal room, and has higher waste heat recovery efficiency when preheating fresh air. The energy saving is most of the time larger than the energy consumption of the fan, and the energy saving device is an effective measure for realizing the energy saving of the fresh air system of the experimental animal room.
Claims (3)
1. The utility model provides a new heat recovery unit that airs exhaust suitable for laboratory animal room which characterized in that includes: the heat exchanger comprises a flat micro heat pipe array heat exchanger (1), a partition plate (2), a condensation section (3) and an evaporation section (4);
the core component of the device is a flat micro heat pipe array heat exchanger (1), a partition plate (2) is arranged at the middle height position in the device, a heat recovery unit is divided into an upper part and a lower part, the upper part is a fresh air duct, and the fresh air duct comprises a fresh air inlet section (14), a first air volume adjusting valve (15), a first damping layer (16), a condensation section (3) of the flat micro heat pipe array heat exchanger, a fresh air outlet section (17) and an axial flow fan (18); the lower part of the partition board is provided with an exhaust air duct which comprises an exhaust air inlet section (19), a second air volume adjusting valve (20), a second damping layer (21), an evaporation section (4) of the flat micro heat pipe array heat exchanger (1), an exhaust air outlet section (22) and a centrifugal fan (23); the partition plate separates the two air ducts to prevent cross contamination of the fresh air exhaust.
2. The method for applying the device of claim 1, which is implemented as follows:
fresh air is filtered by a first damping layer (16) from a fresh air inlet section (14) and then reaches a condensation section (3) of the flat micro heat pipe array heat exchanger, absorbs heat released by condensation of working media in heat pipes to realize temperature rise, and is sent into a fresh air outlet section (17) and then reaches an animal room feeding room by an axial flow fan (18); indoor exhaust air passes through the exhaust air inlet section (19) and the second damping layer (21) and then reaches the evaporation section (4) of the flat micro heat pipe array heat exchanger, working medium liquid in the heat pipes absorbs heat of the exhaust air, is evaporated and gasified to rise to the condensation section (3), the temperature of the exhaust air is reduced after the exhaust air is absorbed, and the exhaust air is sent to the exhaust air outlet section (22) by the centrifugal fan (23) and then reaches the outdoors.
3. The method of claim 2, wherein: the refrigerant evaporates gasification after evaporation section (4) absorbs the heat of heat source, and the gas that carries a large amount of heats gets into condensation segment (3), and the heat is passed through the gas liquefaction heat dissipation, gives the cold source, and under the effect of gravity and microgroove structure capillary force, working medium liquid backward flow gets back to the evaporation section once more and continues to absorb heat gasification from the heat source, carries out heat transfer circulation from this, passes to the cold source with the heat source constantly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911031065.1A CN110771520A (en) | 2019-10-28 | 2019-10-28 | New exhaust air heat recovery device and method suitable for experimental animal room |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911031065.1A CN110771520A (en) | 2019-10-28 | 2019-10-28 | New exhaust air heat recovery device and method suitable for experimental animal room |
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| CN110771520A true CN110771520A (en) | 2020-02-11 |
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