US3485485A - Cooling screen - Google Patents

Cooling screen Download PDF

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Publication number
US3485485A
US3485485A US681242A US3485485DA US3485485A US 3485485 A US3485485 A US 3485485A US 681242 A US681242 A US 681242A US 3485485D A US3485485D A US 3485485DA US 3485485 A US3485485 A US 3485485A
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United States
Prior art keywords
cooling
plane
strips
wave
strip
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Expired - Lifetime
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US681242A
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English (en)
Inventor
Heinz Faigle
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • 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

Definitions

  • a cooling screen is constituted by a plurality of sheets in secured contacting relation, wherein each sheet has a median longitudinal axis with corrugations in the longitudinal direction on either side of the axis, said corrugations being longitudinaly offset from one another on either side of the axis so that when viewed transversely the ridge of one corrugation is aligned with the valley of the other corrugation, the ridges and valleys of the corrugations being equal. When viewed longitudinally, unimpeded passageways are formed between adjacent sheets.
  • the invention relates to a cooling screen, especially for cooling towers, consisting of several strips arranged sideby-side, preferably of metallic, mineral or synthetic material, each of the strips, at least partially, having a wavelike character in two different, crossing directions, said wavetrains being superposed to one another; thus, referring to a median plane of the strips, in the longitudinal as well as in the transverse extension of the strip, at least partially, a positive half wave lying in front of this plane is followed by a negative half wave lying behind said plane and a negative half wave lying behind said plane is followed by a positive half wave in front of said plane.
  • cooling screens for cooling towers were manufactured of wood.
  • Today synthetic, metallic or mineral materials are used for this purpose.
  • a known construction of this type consists of tapelike strips, having a zig-zag character in longitudinal direction. Several strips are arranged side-by-side and their median planes are combined to plates in parallel to one another, the different strips being firmly connected with one another.
  • the cooling screens thus formed are open perpendicularly to their plane in such manner that the water to be cooled can flow from the top to the bottom and the cooling air from the bottom to the top.
  • cooling screen of this type the individual tapelike strips also have a zig-zag character, but the direction of the zigzag character forms an acute angle with the longitudinal extension of the strip.
  • cooling screens of this type are open for the air flow in two directions perpendicular to each other, it cannot be neglected that cooling screens of this type oppose a considerable resistance to the air flow in such manner that the rate of free air flow is relatively small due to the temperature drop in the cooling tower. In the case of a forced air flow by means of blowers they must be dimensioned accordingly. If a straight strip is inserted between two zig-zag strips for the purpose of mechanical stabilization, the air flow in transverse direction is completely blocked.
  • a cooling tower is known, the large open-surface coolers of which consist of plates which are waveshaped in the direction of flow of the cooling air and are spaced ice from one another; the distance holders are plates which are waveshaped in the direction of flow of the cooling air and transversely thereto.
  • the cooling capacity referred to the unit area which is given through numerous factors regarding construction and inflow technique, like for example part of the wettable surface, resistance to flow, velocity of flow, wettable surface per unit of volume, degree of turbulence of the air flowing through and the like, is not satisfactory.
  • the configuration of the cooling screen according to the invention not only produces an active, turbulent movement of the water to be cooled, condensate or the like, but also of the air flowing through the cooling screen, in such manner that an intensive cooling can be realized by relatively simple means on short distances, which causes small structural dimensions of the cooling device. It is essential that free openings going through and lying one behind the other are provided for the air flow in transverse as well as in longitudinal direction, which only constitute a small resistance to flow without preventing the turbulence of the air flow.
  • FIGURE 1 is a perpective view of a tapelike strip
  • FIGURE 2 is a perspective view of a cooling screen consisting of a tape-like strip
  • FIGURE 3 is a topview
  • FIGURE 4 is a view in the direction of the arrows indicated in FIGURE 3
  • FIGURES 5 and 6 show a variant of the cooling screen according to FIGURE 2 in perspective and plan view respectively
  • FIGURE 7 is a view in the? direction of the arrows indicated in FIGURE 6.
  • the tapelike strip 1 which is manufactured for example of a plastic material responding to mechanical and thermic stress, has a Wavelike character in the longitudinal direction (arrow 2) as well as in the transverse direction (arrow 3), the two Wavetrains being superposed in such manner that, referring to the median plane 4 of the strip in the longitudinal as well as in the transverse extension (2, 3) of the strip 1, a positive half wave 5, 5', 5" lying in front of this plane 4 is followed by a negative half wave 6, 6, 6" lying behind said plane 4 and a negative half wave lying behind said plane is followed by a positive half wave lying in front of said plane.
  • 7 and 8 are two sectional planes perpendicular to each other going and the median plane 4.
  • Sectional plane 7 comprises the central axis 9 of the strip 1 and is parallel thereto; the sectional plane 8 is in the zone of the vertex height of a wave half 5 or 6; thus an approximately straight line 10 is obtained as the intersection of plane 7 and strip 1 whichcoincides with the longitudinal central axis 9; on the other hand the intersection of strip 1 and plane 8 is a waveshaped line 11 (FIGURE 1).
  • the wavetrains in FIGURE I extend continuously, it is within the scope of the invention to form the strip in such manner that the individual cutting borders are straight lines, for example trapezoidal or triangular lines.
  • the continuous extension of the wavetrains is not obligatory for the invention, either; it is possible to provide an interrupted wavetrain or to form the strips only on part of their length in the manner as proposed.
  • the directions of the two wavetrains are absolutely perpendicular to each other; it is possible that the two directions form an acute angle with each other.
  • the wave train in transverse direction (arrow 3) of the strip 1 is relatively short so that the cutting border 11 forms a positive or negative wave quarter 11 and 11 with the plane 8, referring to the median plane 4 of the strip. It is within the scope of the invention to provide a wider strip or to form the waves in transverse direction in such manner that several positive and negative wave halves appear in this direction.
  • the wavelength of one wavetrain is a multiple of the wave length of the other wavetrain, the wavelength of the wavetrain (11) extending in transverse direction (3) preferably being a multiple of the wavelength of the wavetrain extending in longitudinal direction (2).
  • the median planes 4 of several strips (1, 1', 1") of the type described are arranged parallel to one another and side-by-side; thus structures like honey combs (FIGURES 2, 3 and 4) are obtained extending in two directions, the individual strips being firmly connected with one another, for example by being glued or welded together, in the Zone of the positive or negative wave halves touching one another.
  • the wave halves are chamfered in their vertex zone in such manner that a parallel surface to the median plane 4 is formed.
  • cooling screens of a random dimension may be constructed which respond to the object of the invention (vertical and hori zontal installation in any position) by simple means; the cross section of the opening provided for the air passage being large and offering only small resistance to air flow; on the other hand a high degree of turbulence is obtained in such manner that the cooling screen offers a maximum of cooling capacity.
  • a cooling grid for cooling towers comprising a plurality of sheets arranged parallel to one another, each sheet having a median longitudinal axis with corrugations in the longitudinal direction on either side of said axis, said corrugations on either side of the axis being longitudinally offset from one another so that when viewed transversely the ridge of one corrugation is aligned with the valley of the other corrugation, the ridges and valleys of the corrugations being equal, and means joining said sheets to one another in. contacting relation at the ridges and valleys.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US681242A 1966-11-11 1967-11-07 Cooling screen Expired - Lifetime US3485485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1047066A AT281882B (de) 1966-11-11 1966-11-11 Kühlraster als Rieseleinbau, insbesondere für Kühltürme

Publications (1)

Publication Number Publication Date
US3485485A true US3485485A (en) 1969-12-23

Family

ID=3622560

Family Applications (1)

Application Number Title Priority Date Filing Date
US681242A Expired - Lifetime US3485485A (en) 1966-11-11 1967-11-07 Cooling screen

Country Status (4)

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US (1) US3485485A (de)
AT (1) AT281882B (de)
CH (1) CH493814A (de)
DE (1) DE1601131B2 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952077A (en) * 1970-05-07 1976-04-20 Serck Industries Limited Liquid cooler devices
EP0138401A2 (de) 1983-10-15 1985-04-24 Albert Frederick Wigley Vorrichtung zum Gas-Flüssigkeitskontakt
US4915878A (en) * 1986-03-24 1990-04-10 Gyoergy Fabry Packing structure especially for use in a column mainly for contacting liquid and gas phases
US5063000A (en) * 1989-05-03 1991-11-05 Mix Thomas W Packing elements
US5204027A (en) * 1992-02-04 1993-04-20 Armstrong Charles M Fluid contact panels
US5407607A (en) * 1993-11-09 1995-04-18 Mix; Thomas W. Structured packing elements
EP2528675B1 (de) 2010-01-25 2018-04-18 Donaldson Company, Inc. Gefaltete filtriermedien mit konischen rillen
US10525397B2 (en) 2007-06-26 2020-01-07 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US10786774B2 (en) 2007-02-02 2020-09-29 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US10946313B2 (en) 2008-07-25 2021-03-16 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT380335B (de) * 1980-03-25 1986-05-12 Faigle Kunststoff Gmbh Fuellkoerper fuer anlagen zum energie- und/oder stoffaustausch oder tropfenabscheider und dgl.
DE3012793C2 (de) * 1980-04-02 1982-03-25 Carl Munters-Euroform Gmbh & Co Kg, 5100 Aachen Füllkörper
AT396178B (de) * 1985-08-02 1993-06-25 Faigle Kunststoff Gmbh Fuellkoerper fuer anlagen zum energie- und/oder stoffaustausch zwischen gas- und/oder fluessigen medien oder tropfenabscheider
GB9610776D0 (en) * 1996-05-22 1996-07-31 Univ Aston Structured packings
WO2009153278A1 (de) * 2008-06-18 2009-12-23 Hewitech Gmbh & Co. Kg Einbauelement zum einbau in einer vorrichtung zur befeuchtung, reinigung und/oder kuehlung eines fluids, insbesondere gases wie z.b. luft, und verfahren zur herstellung eines einbauelements
DE102014019537A1 (de) 2014-12-24 2016-06-30 Wilke Engelbart Verfahren zur abtrennung und / oder zur anreicherung von schlamm
CN106430549B (zh) * 2016-08-31 2020-07-10 维克·恩格拜 一种逐序处理污水的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE846092C (de) * 1944-01-25 1952-08-07 Linde Eismasch Ag Vorrichtung zum Rektifizieren von Gasgemischen oder zum Waschen von Gasen oder Gasgemischen
US3084918A (en) * 1960-04-21 1963-04-09 Fluor Corp Corrugated packing for counterflow cooling towers
US3374994A (en) * 1963-03-04 1968-03-26 Ici Ltd Packing units for gas-liquid contact apparatus
US3415502A (en) * 1964-03-24 1968-12-10 Munters Carl Georg Liquid and gas contact body

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE846092C (de) * 1944-01-25 1952-08-07 Linde Eismasch Ag Vorrichtung zum Rektifizieren von Gasgemischen oder zum Waschen von Gasen oder Gasgemischen
US3084918A (en) * 1960-04-21 1963-04-09 Fluor Corp Corrugated packing for counterflow cooling towers
US3374994A (en) * 1963-03-04 1968-03-26 Ici Ltd Packing units for gas-liquid contact apparatus
US3415502A (en) * 1964-03-24 1968-12-10 Munters Carl Georg Liquid and gas contact body

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952077A (en) * 1970-05-07 1976-04-20 Serck Industries Limited Liquid cooler devices
EP0138401A2 (de) 1983-10-15 1985-04-24 Albert Frederick Wigley Vorrichtung zum Gas-Flüssigkeitskontakt
EP0138401A3 (en) * 1983-10-15 1985-10-09 Albert Frederick Wigley Gas/liquid contact device
US4915878A (en) * 1986-03-24 1990-04-10 Gyoergy Fabry Packing structure especially for use in a column mainly for contacting liquid and gas phases
US5063000A (en) * 1989-05-03 1991-11-05 Mix Thomas W Packing elements
US5204027A (en) * 1992-02-04 1993-04-20 Armstrong Charles M Fluid contact panels
US5407607A (en) * 1993-11-09 1995-04-18 Mix; Thomas W. Structured packing elements
US5578254A (en) * 1993-11-09 1996-11-26 Mix; Thomas W. Structured packing elements
US10786774B2 (en) 2007-02-02 2020-09-29 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US11612845B2 (en) 2007-02-02 2023-03-28 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US11298645B2 (en) 2007-06-26 2022-04-12 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US10525397B2 (en) 2007-06-26 2020-01-07 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US12017177B2 (en) 2007-06-26 2024-06-25 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US10946313B2 (en) 2008-07-25 2021-03-16 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US12048888B2 (en) 2008-07-25 2024-07-30 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US11413563B2 (en) 2010-01-25 2022-08-16 Donaldson Company, Inc. Pleated filtration media having tapered flutes
EP2528675B1 (de) 2010-01-25 2018-04-18 Donaldson Company, Inc. Gefaltete filtriermedien mit konischen rillen

Also Published As

Publication number Publication date
CH493814A (de) 1970-07-15
AT281882B (de) 1970-06-10
DE1601131A1 (de) 1970-07-16
DE1601131B2 (de) 1976-08-26

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