US20230105162A1 - Direct heat exchange fill - Google Patents
Direct heat exchange fill Download PDFInfo
- Publication number
- US20230105162A1 US20230105162A1 US17/958,812 US202217958812A US2023105162A1 US 20230105162 A1 US20230105162 A1 US 20230105162A1 US 202217958812 A US202217958812 A US 202217958812A US 2023105162 A1 US2023105162 A1 US 2023105162A1
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- US
- United States
- Prior art keywords
- fill
- face
- elliptically
- fill sheet
- sheets
- Prior art date
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
- F28F25/087—Vertical or inclined sheets; Supports or spacers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/04—Direct-contact trickle coolers, e.g. cooling towers with cross-current only
Definitions
- the present invention relates to direct heat exchange fill and fill packs.
- Heat exchangers are well known in industry and are designed to efficiently transfer heat from one medium to another. There are many types and sizes of heat exchangers and a particular type of heat exchanger is typically selected depending upon its use such as for refrigeration, air conditioning, chemical plants, petroleum refineries and power plants.
- Cooling towers are used to transfer waste heat into the atmosphere. This cooling causes the evaporation of water to remove waste heat and cool water to near the wet-bulb air temperature.
- One type of cooling tower used to remove waste heat from warm water received from a heat source is represented in FIG. 1 .
- Warm water from a heat source is pumped to a water distribution system at the top of the tower which may be a pressurized water distribution system or a gravity-fed water basin system.
- the water is distributed over a water dispersion media or “fill,” typically by large orifice nozzles.
- air is drawn through air inlet louvers at the sides of the tower and travels horizontally through the fill in a crossflow arrangement with the falling water.
- the warm moist air is drawn to the top of the cooling tower by the fan and discharged to the atmosphere.
- the cooled water drains to a basin at the bottom of the tower and is returned to the heat source.
- the water dispersion media or “fill” typically comprises a plurality of sheets that may be installed individually as hanging fill, or bonded together to produce hanging fill packs, or fill packs supported from below.
- For hanging fill holes are punched near the top of the fill sheets to accept rails or for mounting on rails where the fill sheets are spaced along the length of the rails. This causes the individual fill sheets to be under tensile loading under the holes, but under compressive loading at the rail-sheet interface.
- sheets are secured together into rigid blocks of fill (“fill packs”), then placed on top of a support structure in the tower.
- each fill sheet is a generally flat sheet of thermoplastic material impressed with various types of surface features to enhance water/air mixing. These heat exchanger sheets are fabricated by thermoforming sheets of thermoplastic material under vacuum. Adjacent fill sheets are separated from one-another to form water and air passages by integrally formed nubs or “spacers.”
- the performance of a cooling tower can be characterized by the quantity of water or other cooling fluid that can be cooled to a specified operating temperature for a certain set of ambient conditions.
- water is sprayed onto the cooling tower fill and is exposed to an air flow, thereby causing evaporation of a small portion of water into the air, which cools the remaining water.
- the overall performance of the tower may also be increased or improved. Since most of this evaporation occurs within the fill, changes to the fill design can significantly impact the amount of cooling a tower can achieve during operation.
- all fills contain a dedicated heat transfer area, while some also contain an integral drift eliminator near the air outlet of the fill and/or an integral louver section near the air inlet of the fill.
- the heat transfer area of the fill is responsible for the thermal performance of the fill by providing a large surface area for water to spread out on the surfaces of the fill to increase contact with the air, mixing the air as it flows through the fill and mixing the water film as it flows over the sheets, while maintaining a low pressure drop across the fill.
- drift eliminators are sometimes included on the air outlet side of the sheet to capture these drift droplets and prevent them from escaping the cooling tower, which are referred to as drift eliminators and may be comprised of integral drift eliminators (“IDs”).
- IDs integral drift eliminators
- tube drift eliminators For cross-flow film fills, there are typically two different types of drift eliminators which may be integrated, including the tube drift eliminator and the blade drift eliminator.
- tube drift eliminators are angled tubes formed into the ID section of the fill by aligning drift corrugations of adjacent sheets. As water droplets enter the tubes entrained in the air stream, the momentum of the droplets causes them to impact the tube wall as the airflow changes direction while following the angled tube of the ID.
- a vertical channel is typically included at the inlet of the integral drift eliminator tubes to allow water collected on the surface of the integral drift eliminator to drain out of the fill into a lower catch basin, and to provide vertical structural support for bottom supported fills.
- Integral blade drift eliminator designs accomplish drift removal by creating a large vertically oriented ridge, near the air outlet of the fill to change the direction of airflow.
- the momentum of the water droplets at the integral drift eliminator inlet causes an impact with the ridge walls, eliminating the drift from the airstream.
- Other structural features such as ribs or spacers may be included before or after the eliminator ridge to ensure the sheets remain separated during operation and to stiffen the fill and/or sheet, as well as the assembled fill pack.
- integral louvers are sometimes included into the fill design to prevent water from splashing out of the front of the fill.
- These integral louvers are usually comprised of corrugations which are angled downward as they protrude into the fill, to provide a sloped surface for the water to run down, thereby preventing water or other cooling fluid from reaching the front of the fill.
- the corrugations on each sheet may be assembled together to form tubes or remain parallel to adjacent sheet corrugations with additional sheet spacer features added to the design.
- the first invention presented herein is an improvement to (but incorporates the basic structure, manufacture, and assembly of) the aforementioned fill structure which uses spacers to separate the stacked fill sheets from one-another, but in which the integrally formed spacers are elliptically shaped.
- the elliptically shaped spacers are arranged in pairs, with pairs spaced across the fill sheet in a plurality of spacer rows.
- Each pair of elliptically shaped spacers includes one spacer formed in one direction perpendicular to the plane of the fill sheet, and the other spacer of a pair formed in the opposite direction perpendicular to the plane of the fill sheet, with the result that no matter the perspective, one spacer of a pair is pressed into the fill sheet, “the female spacer,” and the other spacer of the pair extends out of the fill sheet, the “male spacer.”
- the sheets When the sheets are stacked against one-another, they are arranged so that the male spacers of facing surfaces of adjacent sheets align with and contact one-another to create a space between the fill sheets that is equivalent to the height of two male spacers.
- the major axes of the elliptically shaped spacers may all be arranged horizontally, in which case the air passes generally straight through the sheets of fill; b) the major axes of the elliptically shaped spacers on one side of a fill sheet may alternate in upwardly tilting and downwardly tilting directions, in which case the air on one side of a fill sheet is forced up, then down, then up, then down, and so on, and air on the opposite side of the same fill sheet is alternatively forced down, then up, then down, then up, and so on; c) the major axes of the elliptically shaped spacers on one side of a fill sheet may all be tilted d) upwardly, in which case the air is continuously forced upward as it crosses the fill sheet; or e) downwardly; in which case the air is continuously forced downward as it crosses the fill sheet.
- the second invention presented herein is an improvement to (but incorporates the basic structure, manufacture, and assembly of) the aforementioned fill structure in which the fill sheet features an underlying wave parallel to the direction of airflow.
- the wavy fill sheets of this invention increase the structural performance of a mechanically bonded pack when supported from the bottom.
- the wavy fill sheets of the invention enhance the bending stiffness and buckling load of the fill sheet.
- the wave-shaped sheets maintain a constant spacing between adjacent sheets via spacers, which may be prior art spacers or the elliptical spacers according to the first invention herein, but the wavy shape induces turbulence to increase air water contact and thermal efficiency.
- the period and the amplitude of the wave shape may be optimized to balance increased pressure drop vs. increased thermal efficiency.
- the period of the wave form is 4-5′′ and more preferably 4.7′′ and the amplitude is 0.1′′-0.3′′, more preferably 0.2′′
- a fill sheet for assembly into a fill pack for cooling a cooling medium in a cooling tower comprising a first end; a second end; a first side; a second side; the second end extending substantially parallel to the first end and generally perpendicularly relative to a vertical axis (with respect to water travel), the first and second ends extending substantially parallel to a lateral axis of the fill sheet; the first second side extending substantially parallel to the first side and generally parallel to the vertical axis, the first and second sides connecting the first and second ends; the first end, second end, first side and second side defining a first face and a second face that are mirror images of one-another; the first face of the fill sheet comprising a plurality of first-face elliptically-shaped projections and depressions arranged in a plurality of rows across the fill sheet, each of the first-face elliptically shaped projections corresponding to a second-face elliptically shaped depression on
- a fill sheet in which the first-face elliptically-shaped projections and depressions are arranged in pairs, each of the pairs having a single first-face elliptically shaped projection and a single first-face elliptically shaped depression.
- each of the first-face elliptically-shaped projections and depressions has a major axis that is parallel to a direction of air travel across the fill sheet.
- a fill sheet in which all of the first-face elliptically-shaped projections and depressions have a major axis that is aligned at a same angle that is equal to or less than +15 degrees from horizontal.
- a fill sheet in which all of the first-face elliptically-shaped projections and depressions have a major axis that is aligned at a same angle that is equal to or less than ⁇ (negative) 15 degrees from horizontal.
- a fill pack assembly for cooling a fluid flowing through the pack with a gas flowing through the pack in a substantially horizontal direction, the fill pack assembly comprising a plurality of identical fill sheets according to any of the above-referenced configurations, wherein the plurality of fill sheets are arranged so that elliptically-shaped projections on adjacent faces of adjacent sheets contact one-another.
- a fill sheet for assembly into a fill pack for cooling a cooling medium in a cooling tower comprising: a first end; a second end; a first side; a second side; the second end extending substantially parallel to the first end and generally perpendicularly relative to a vertical axis (with respect to water travel), the first and second ends extending substantially parallel to a lateral axis of the fill sheet; the first second side extending substantially parallel to the first side and generally parallel to the vertical axis, the first and second sides connecting the first and second ends; the first end, second end, first side and second side defining a first face and a second face, the first and second faces mirror images of one-another; the fill sheet further defining a continuous wave extending in a direction parallel to a direction of air flow.
- a fill sheet wherein the continuous wave has a period of 3 inches to 6 inches and an amplitude of 0.05 inches to 0.5 inches.
- a fill sheet wherein the continuous wave has a period of 4 inches to 5.5 inches and an amplitude of 0.1 inches to 0.35 inches
- a fill sheet wherein the continuous wave has a period of 4.7 inches and an amplitude of 0.2 inches.
- a fill pack assembly for cooling a fluid flowing through the pack with a gas flowing through the pack in a substantially horizontal direction, the fill pack assembly comprising a plurality of identical fill sheets having the continuous wave described above.
- a fill pack assembly made of fill sheets characterized by a wave in which the plurality of fill sheets are arranged so that elliptically-shaped projections on adjacent faces of adjacent sheets contact one-another.
- a fill sheet as described herein having integrally formed drift eliminators and/or integrally formed air inlet louvers.
- FIG. 1 is a side schematic view of a cross flow cooling tower.
- FIG. 2 is an elevational front view of a single fill sheet according to an embodiment of the invention.
- FIG. 3 is a perspective view of a single fill sheet according to an embodiment of the invention.
- FIG. 4 is a closeup perspective view of the embodiment of FIG. 3 .
- FIG. 5 is a further closeup perspective view of the embodiment of FIG. 3 .
- FIG. 6 is a perspective view of the top left corner of a stack of fill sheets according to an embodiment of the invention.
- FIG. 7 is a perspective view of the top right corner of the stack of fill sheets shown in FIG. 6 .
- FIG. 8 is a perspective view of a stack of fill sheets according to an embodiment of the invention.
- FIG. 9 is a close-up perspective view of the embodiment of FIG. 8 .
- FIG. 10 is a further closeup perspective view of the embodiment of FIG. 8 .
- FIG. 11 is a schematic representing a first embodiment of the invention in which the spacers are all oriented horizontally and parallel to the air flow.
- FIG. 12 is a schematic representing a second embodiment of the invention.
- FIG. 13 is a schematic representing a third embodiment of the invention.
- FIG. 14 is a schematic representing a fourth embodiment of the invention.
- FIG. 15 is a schematic representing a fifth embodiment of the invention.
- FIG. 16 is a front elevational view of a single fill sheet according to another invention.
- FIG. 17 is a perspective view of the top left corner of a single fill sheet according to the invention of FIG. 16 .
- FIG. 18 is a side view of the embodiment of FIG. 17 .
- FIG. 19 is a perspective view of a stack of fill sheets according to the invention of FIG. 16 .
- FIG. 20 is a side view of the embodiment of FIG. 19 .
- the invention is directed to a cross flow water dispersion media in the form of individually hanging fill sheets 202 , or fill pack 200 comprised of a plurality of identical stacked and engaged fill sheets 202 .
- Each of the sheets 202 defines a vertical axis 204 extending generally vertically and a horizontal axis 206 extending generally horizontally relative to the fill sheets 202 .
- vertical and horizontal with respect to the axes 204 and 206 is arbitrary for the purposes of description of the structure of the invention and are not intended to limit the orientation of the invention hereof in use.
- the fill pack 200 of the invention would generally be oriented in a standard cross-flow cooling tower so that vertical axis 204 is generally parallel to the direction of the water travel in a standard cross-flow cooling tower and horizontal axis is generally parallel to the direction of air travel.
- the water flows through the fill pack 200 generally along the vertical axis 204 between first and second ends 208 a , 208 b of the sheets 202 .
- First and second ends 208 a and 208 b of the fill sheets 202 are joined by first and second sides 208 c and 208 d .
- the air passes through the fill pack 200 generally along the horizontal axis 206 between the first and second sides 208 c and 208 d .
- the first end 208 a extends substantially parallel to the second end 208 b and generally perpendicular relative to the longitudinal axis 204 .
- Each fill sheet is preferably manufactured from thermoplastic material, for example, PVC, CPVC, HPVC or polypropylene, and preferably has a thickness of 0.010 to 0.025 inches (10 mils to 25 mils) and more preferably of 0.012 to 0.020 inches (12 mils to 20 mils).
- the surface of the fill sheets may be smooth and/or featureless, or it may include surface feature 210 such as micro-ridges and valleys extending in a zigzag (e.g., herringbone) pattern across the surface of the sheet.
- surface feature 210 such as micro-ridges and valleys extending in a zigzag (e.g., herringbone) pattern across the surface of the sheet.
- the embodiments shown in the figures have microstructures in the form of alternating diagonal mini-corrugations that traverse the faces of the sheets.
- the fill sheets of the invention may include integrally formed air inlet louvers 216 on the air inlet side and/or integrally formed drift eliminators 218 at the air outlet side.
- Each fill sheet 202 has formed thereon a plurality of integrally formed spacers 212 in the form of elliptically-shaped protrusions extending out of the primary plane of the sheet (the plane defined by first end 208 a , second end 208 b , first side 208 c and second side 208 d ).
- the elliptically shaped spacers are preferably arranged in pairs, with pairs spaced across the fill sheet in a plurality of rows.
- Each pair of elliptically shaped spacers includes one spacer formed in one direction perpendicular to the plane of the fill sheet, and the other spacer of a pair formed in the opposite direction perpendicular to the plane of the fill sheet, with the result that no matter the perspective, one spacer of a pair is pressed into the fill sheet, “the female spacer” ( 212 a ) and the other spacer of the pair extends out of the fill sheet, the “male spacer” ( 212 b ).
- Each male spacer viewed from the perspective of one side of a fill sheet, is a female spacer when viewed from the perspective of the opposite side of the same sheet.
- each female spacer when viewed from the perspective of one side of a fill sheet, is a male spacer when viewed from the perspective of the opposite side of the same sheet.
- the preferred aspect ratio of the elliptical shapes of the spacers 212 is 2:1, although any aspect ratio between 4:1 and 1.5:1 would be understood to provide similar benefits and is therefore considered to be within the scope of the invention.
- the male spacers 212 b of facing surfaces of adjacent “A” and “B” sheets align with and contact one-another to create a space between the fill sheets that is equivalent to the height of two male spacers.
- a) the major axes of the elliptically shaped spacers may all be arranged horizontally, in which case the air passes generally straight through the sheets of fill. See, e.g., FIG. 11 , in which the two sets of spacers on the first three rows of spacers on a single fill sheet are represented (similar to the field of view of FIG. 4 ). In FIG. 11 , as well as FIGS.
- the blue ellipses represent the male spacers on one side of a fill sheet (extending out of the plane of the sheet, toward the reader), and the red ellipses represent the female spacers (that is, the male spacers on the reverse side of the same fill sheet, extending into the plane of the fill sheet, away from the reader).
- the major axes of the elliptically shaped spacers on one side of a fill sheet may alternate in upwardly tilting and downwardly tilting directions, see, e.g., FIG. 12 .
- the air on one side of a fill sheet is forced up, then down, then up, then down, and so on, and air on the opposite side of the same fill sheet is alternatively forced down, then up, then down, then up, and so on.
- the major axes of the elliptically shaped male spacers on one side of a fill sheet may all be tilted upwardly, and the major axes of the elliptically shaped male spacers on the opposite side of fill sheet may all be tilted downwardly, see, e.g., FIG.
- the blue ellipses represent the elliptically-shaped spacers on one side of a fill sheet
- the red ellipses represent the elliptically-shaped spacers on the reverse side of the same fill sheet.
- the major axes of all of the elliptically shaped male spacers on both sides of a fill sheet may be tilted upwardly, in which case the air is continuously forced upward as it crosses the fill sheet, see, e.g., FIG. 14 .
- the major axes of all of the elliptically shaped male spacers on both sides of a fill sheet may be tilted downwardly; in which case the air is continuously forced downward as it crosses the fill sheet, see, e.g., FIG. 15 .
- the aerodynamic shape of the elliptical-shaped spacers 212 reduces the drag coefficient and associated pressure drop relative to typical round spacers.
- the reduced pressure drop results in higher thermal capability.
- the fill pack may be aligned so that the major axes of the elliptical-shaped spacers are essentially parallel to the airflow when installed in cooling tower.
- the major axes of the spacers be arranged so that the major axes of the spacers do not exceed fifteen (15) degrees relative to horizontal in order to minimize drag coefficient.
- facing male spacers 212 b on adjacent sheets may be bonded together according to various known methods, e.g., solvent adhesives, ultrasonic welding, etc.
- the second invention presented herein is a fill sheet 202 and fill pack 200 where each fill sheet 202 defines a continuous wave 214 having a wavelength that is parallel to the direction of air flow, see, e.g., FIGS. 16 - 20 .
- the fill sheet 202 may include elliptically-shaped spacers 212 as described with respect to the first invention herein; the fill sheet 202 may include round spacers, or spacers of other shapes.
- the spacers may be formed in pairs, pressed in first and second directions perpendicular to the plane of the sheet as described above, with the pairs distributed across and down the sheet in a series of rows.
- the wavy fill sheets of this invention increase the structural performance of a mechanically bonded pack when supported from the bottom. Compared to a cross-flow fill sheet made from a flat sheet, the wavy fill sheets of the invention enhance the bending stiffness and buckling load of the fill sheet.
- the wave-shaped sheets maintain a constant spacing between adjacent sheets via spacers, which may be prior art spacers or the elliptical spacers according to the first invention herein, but the wavy shape induces turbulence to increase air water contact and thermal efficiency.
- the period and the amplitude of the wave shape may be optimized to balance increased pressure drop vs. increased thermal efficiency.
- the period of the wave form is 3 inches to 6 inches, preferably 4 inches to 5.5 inches, and more preferably 4.7 inches and the amplitude is 0.05 inches to 0.5 inches, preferably 0.1 inches-0.35 inches, and more preferably 0.2 inches.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Separation By Low-Temperature Treatments (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024519531A JP2024533788A (ja) | 2021-10-01 | 2022-10-03 | 直接熱交換フィル |
| PCT/US2022/045531 WO2023056090A1 (en) | 2021-10-01 | 2022-10-03 | Direct heat exchange fill |
| US17/958,812 US20230105162A1 (en) | 2021-10-01 | 2022-10-03 | Direct heat exchange fill |
| IL311830A IL311830A (en) | 2021-10-01 | 2022-10-03 | Direct exchange heat filling |
| CA3233552A CA3233552A1 (en) | 2021-10-01 | 2022-10-03 | Direct heat exchange fill |
| KR1020247013950A KR20240089107A (ko) | 2021-10-01 | 2022-10-03 | 직접 열교환 충진재 |
| AU2022357411A AU2022357411A1 (en) | 2021-10-01 | 2022-10-03 | Direct heat exchange fill |
| MX2024003898A MX2024003898A (es) | 2021-10-01 | 2022-10-03 | Relleno de intercambio directo de calor. |
| ZA2024/03314A ZA202403314B (en) | 2021-10-01 | 2024-04-29 | Direct heat exchange fill |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163251271P | 2021-10-01 | 2021-10-01 | |
| US202163251284P | 2021-10-01 | 2021-10-01 | |
| US17/958,812 US20230105162A1 (en) | 2021-10-01 | 2022-10-03 | Direct heat exchange fill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20230105162A1 true US20230105162A1 (en) | 2023-04-06 |
Family
ID=85774435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/958,812 Pending US20230105162A1 (en) | 2021-10-01 | 2022-10-03 | Direct heat exchange fill |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20230105162A1 (enExample) |
| EP (1) | EP4409217A4 (enExample) |
| JP (1) | JP2024533788A (enExample) |
| KR (1) | KR20240089107A (enExample) |
| AU (1) | AU2022357411A1 (enExample) |
| CA (1) | CA3233552A1 (enExample) |
| IL (1) | IL311830A (enExample) |
| MX (1) | MX2024003898A (enExample) |
| WO (1) | WO2023056090A1 (enExample) |
| ZA (1) | ZA202403314B (enExample) |
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| US3475012A (en) * | 1966-11-08 | 1969-10-28 | Ici Ltd | Gas-liquid contact unit |
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| FR2468404A1 (fr) * | 1979-10-26 | 1981-05-08 | Hamon Sobelco Sa | Feuille de ruissellement pour dispositif de garnissage d'installation de mise en contact de liquide et de gaz |
| US4320073A (en) * | 1980-11-14 | 1982-03-16 | The Marley Company | Film fill sheets for water cooling tower having integral spacer structure |
| US4518544A (en) * | 1983-01-20 | 1985-05-21 | Baltimore Aircoil Company, Inc. | Serpentine film fill packing for evaporative heat and mass exchange |
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| US4657711A (en) * | 1983-10-15 | 1987-04-14 | Wigley Albert F | Gas/liquid contact device |
| US4670197A (en) * | 1986-08-29 | 1987-06-02 | Custodis-Ecodyne | Gas/liquid contact apparatus |
| US4800047A (en) * | 1987-05-13 | 1989-01-24 | Engetra S.A. | Gas and liquid contact sheet and packing |
| US4801410A (en) * | 1987-07-02 | 1989-01-31 | The Marley Cooling Tower Company | Plastic fill sheet for water cooling tower with air guiding spacers |
| US6460832B1 (en) * | 2000-08-11 | 2002-10-08 | The Marley Cooling Tower Company | Nested, expandable, liquid film fill sheet bundle for expedited installation as a film fill pack |
| US20030183956A1 (en) * | 2002-03-26 | 2003-10-02 | Kyung In Machinery Co., Ltd. | Fill film sheet for cooling tower |
| US20130113126A1 (en) * | 2011-11-07 | 2013-05-09 | Spx Cooling Technologies, Inc. | Air-to-air atmospheric exchanger |
| US9170054B2 (en) * | 2013-07-31 | 2015-10-27 | Baltimore Aircoil Company, Inc. | Cooling tower fill |
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| US4673538A (en) * | 1984-05-04 | 1987-06-16 | Toschi Produktions-Gesellschaft Mbh | Cooling tower panel from fiber concrete or similar material |
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| CA2268999C (en) * | 1998-04-20 | 2002-11-19 | Air Products And Chemicals, Inc. | Optimum fin designs for downflow reboilers |
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| JP4018279B2 (ja) * | 1999-01-19 | 2007-12-05 | カルソニックカンセイ株式会社 | 熱交換器用偏平チューブ |
| JP4175443B2 (ja) * | 1999-05-31 | 2008-11-05 | 三菱重工業株式会社 | 熱交換器 |
| DK177839B1 (en) * | 2013-03-08 | 2014-09-08 | Danfoss As | Heat exchanger with dimples connected by wall sections |
-
2022
- 2022-10-03 KR KR1020247013950A patent/KR20240089107A/ko active Pending
- 2022-10-03 IL IL311830A patent/IL311830A/en unknown
- 2022-10-03 JP JP2024519531A patent/JP2024533788A/ja active Pending
- 2022-10-03 MX MX2024003898A patent/MX2024003898A/es unknown
- 2022-10-03 WO PCT/US2022/045531 patent/WO2023056090A1/en not_active Ceased
- 2022-10-03 AU AU2022357411A patent/AU2022357411A1/en active Pending
- 2022-10-03 CA CA3233552A patent/CA3233552A1/en active Pending
- 2022-10-03 US US17/958,812 patent/US20230105162A1/en active Pending
- 2022-10-03 EP EP22877431.1A patent/EP4409217A4/en active Pending
-
2024
- 2024-04-29 ZA ZA2024/03314A patent/ZA202403314B/en unknown
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| Abstract of GB 1559329 (Year: 1980) * |
| Partial Translation of FR 2468404 (Year: 1981) * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4409217A1 (en) | 2024-08-07 |
| JP2024533788A (ja) | 2024-09-12 |
| EP4409217A4 (en) | 2025-11-19 |
| WO2023056090A1 (en) | 2023-04-06 |
| CA3233552A1 (en) | 2023-04-06 |
| KR20240089107A (ko) | 2024-06-20 |
| ZA202403314B (en) | 2024-12-18 |
| AU2022357411A1 (en) | 2024-04-11 |
| MX2024003898A (es) | 2024-04-30 |
| IL311830A (en) | 2024-05-01 |
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