US20040149832A1 - Large capacity modular non-powered evaporative humidifier - Google Patents

Large capacity modular non-powered evaporative humidifier Download PDF

Info

Publication number
US20040149832A1
US20040149832A1 US10/337,044 US33704403A US2004149832A1 US 20040149832 A1 US20040149832 A1 US 20040149832A1 US 33704403 A US33704403 A US 33704403A US 2004149832 A1 US2004149832 A1 US 2004149832A1
Authority
US
United States
Prior art keywords
media
unit
air
frames
air stream
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.)
Abandoned
Application number
US10/337,044
Inventor
Stephen Peterson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/337,044 priority Critical patent/US20040149832A1/en
Publication of US20040149832A1 publication Critical patent/US20040149832A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54—Free-cooling systems

Definitions

  • This invention pertains to U.S. Patent Classifications 165-201 and 165-222.
  • the classification 165-201 “Heat Exchange, having heating and cooling capability” pertains due to the purpose of the humidifier to absorb heat from the air stream during the change of state of the evaporated water.
  • the classification 165-222 “Humidity control” pertains due to the purpose of the humidifier to allow automatic introduction of water vapor into the air stream based upon measured conditions down stream.
  • This invention provides the capability to humidify or cool spaces served by modular cooling systems without the need to expend heating energy to evaporate water. In addition it increases the capacity of water vapor introduction into an air stream from currently available systems due to the increased evaporative surfaces.
  • the purpose of this invention is to allow introduction of water vapor into and removal of heat from an air stream that is moving through the unit.
  • the unit provides support racks and catch basins for the installation of any media (made by others) that can allow cascading of water downward through the media and simultaneously allow air to pass horizontally through the media.
  • the excess water that is not evaporated during the pass through the media drips from the bottom of the media is collected in basins at the bottom of the media and is drained away.
  • This invention provides multiple sections of media that can be controlled (wetted or not) independently and also provides control capability to bypass the air stream around the media immediately stopping the evaporation process.
  • FIG. 1 “Concept Illustration”
  • This illustration is a three view rendition of the unit that includes general information intended to assist in the understanding of the unit operation and construction.
  • FIG. 2 “Front Exterior View”
  • FIG. 3 “End Views—Right and Left Side”
  • FIG. 4 “Top Exterior View”
  • This illustration is a view looking down from the top of the unit. This allows an understanding of the orientation of equipment mounted in the proposed air paths. This view also includes two section lines that indication the orientation of the last two figures (FIG. 5 and 6 ) of this drawing group.
  • FIG. 5 “Section A (From Top View) Cross Section of Humidifier”
  • This section is a complete horizontal section of the unit at the station indicated by the section line shown on FIG. 4.
  • FIG. 6 “Section B (From Top View) Distribution Header”
  • This section is a partial horizontal section of a water distribution header to be installed at the top of each media section.
  • This unit is a component of multiple parts.
  • the outside housing is steel or aluminum sheet metal fabricated to produce a conduit to direct air into the intake of an air handler or duct.
  • the air movement capacity of the associated air handler or duct that is producing the air movement determines the overall size of the housing.
  • the internal frames and catch basins are sized to divide the available space into segments that will allow staging on and off of water flow capacity. Claim # 1 divides the available space into three (3) equal segments, Claim # 2 divides the available space into four (4) unequal segments, and Claim # 3 divides the available space into two (2) equal segments.
  • Claim # 1 divides the available space into three (3) equal segments
  • Claim # 2 divides the available space into four (4) unequal segments
  • Claim # 3 divides the available space into two (2) equal segments.
  • Each claim makes available movable damper blades that allow movement of the air stream through the housing without passing through the media.
  • This invention improves previous evaporative humidifier designs by increasing the available evaporative media surface and forcing passage of the entire air stream through the media sufficiently slow to humidify in a single pass.
  • the bypass capability of the dampers also allow an increased accuracy of humidity control in the conditioned space.
  • the unit exterior enclosure is constructed sheet metal. Thickness based upon overall size of unit. Sheet metal can be aluminum, stainless steel, galvanized steel or black iron steel.
  • the housing is formed in the shape as indicated in enclosed drawings. The overall housing dimensions are adjusted to match the unit to be served. A four (4) inch overhang is added to the connection dimensions on the front and both side connections. Three (3) front panels of the housing are removable or operable to allow removal of the media being held in the interior frames.
  • the interior frames are located in the housing of as indicated in the enclosed drawings.
  • the location of the media frames in the Claim # 1 configuration is perpendicular to the longest longitudinal dimension.
  • the locations such that the smaller areas are exactly one half (1 ⁇ 2) the size of the larger areas.
  • One of the larger areas between the media frames and the small area at the opposite end of the unit shall be blanked* of at the top of the media frames with bypass dampers installed in the blanked* surface.
  • the areas that are not blanked* at the top of the media frames shall be blanked* at the bottom of media frames with dampers installed in the blanking.
  • the media frames in the Claim # 2 configuration are located in the outside front face of the unit longest dimension and both end faces of the unit.
  • the front face of the longest unit dimension consists of two (2) equal length media frames with catch pans and one (1) frame in each end face.
  • the configuration of Claim # 2 requires the blanking* to be installed across the entire top of the unit with the bypass dampers also installed in the top of the unit.
  • the location of the media frames in the Claim # 3 configuration is linearly on the center line of the longest dimension of the unit.
  • the media frames in the Claim # 3 configuration consist of 2 equal length frames that total in length the longest dimension of the overall unit.
  • a blank off plate with bypass dampers is installed at each end of the unit on opposite sides of the media frame to channel the air stream through the media frames when the bypass dampers are closed.
  • the frames are constructed of 16 gauge one half (1 ⁇ 2) inch by one (1) inch by one half (1 ⁇ 2) inch by 16 gauge stainless steel channels.
  • the frames are constructed by cutting the channels to fit the dimensions of the interior surface of the housing in a tongue overlap manner and attaching the channels together in a configuration that forms air entering and leaving frames spaced apart by the thickness of the media being used plus one quarter (1 ⁇ 4) inch.
  • the media is then cut to match the interior dimensions of the housing and are placed in the collection pan between entering and leaving frames at each media location.
  • the frames are bolted, riveted, screwed or spot welded to the unit housing at the locations as described above.
  • the media frame also includes a water distribution header located at the top of the frame between the entering and leaving segments.
  • the header is constructed of a sheet metal cap that covers a three (3) inch plastic pipe cut to match the overall length of the frame header and split longitudinally for the length of the pipe.
  • One of the pipe halves is attached in the frame header with aluminum angle brackets bolted to the housing and the half pipe at each end of the half pipe.
  • a three eighths (3 ⁇ 8) inch plastic pipe is anchored to a one (1) inch by one half (1 ⁇ 2) inch sixteen (16) gauge stainless steel angle attached inside the half pipe.
  • the three eighths plastic pipe has holes (approximately one eighth of an inch in diameter) drilled in the top of the pipe on three (3) inch centers for the entire length of the pipe.
  • One end of the three eighths (3 ⁇ 8) inch pipe is capped and the other end of the pipe at each media location is attached to a three eighths (3 ⁇ 8) inch electric solenoid valve. All of the solenoid valves for the media locations are then piped into a one half (1 ⁇ 2) inch water pipe header that extends out of the unit at either end to allow connection of supply water for the humidifier unit.
  • bypass dampers consist of stamped sheet metal plates bent to facilitate attachment of pivot point hardware and damper linkage hardware in a manner to allow the movement of an actuator rod to open and close the dampers in the face of the blank off plates as previously described.
  • This invention makes use of existing materials in a new configuration.
  • the increased surface area of the wetted media and the multiple stages of humidification and control through the use of segmented media and bypass dampers makes available a new more efficient method of space humidification.
  • the heat absorbed during the evaporation process also allows this unit to act as a cooling unit in certain configurations.
  • Blanked indicates the installation of a continuous piece of sheet metal between the two media frames in a manner that prevents air movement directly through the unit from top to bottom.
  • the dampers mounted in the blanking sheet metal would allow air to pass through the blanking metal if they are opened

Abstract

This invention is an air direction unit that accepts and holds various types of media in frames that can be wetted with water while passing air through the media for the purpose of introducing water vapor into the air stream. This unit can force the entire air stream through the media and is equipped with control dampers that allow bypass of the media to allow direct control of water vapor capacity. This unit is scalable to encompass a range of air stream capacities.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • Not Applicable [0001]
    • STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
  • Not Applicable [0002]
    • REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISK APPENDIX
  • Not Applicable [0003]
    • BACKGROUND OF THE INVENTION
  • This invention pertains to U.S. Patent Classifications 165-201 and 165-222. The classification 165-201 “Heat Exchange, having heating and cooling capability” pertains due to the purpose of the humidifier to absorb heat from the air stream during the change of state of the evaporated water. The classification 165-222 “Humidity control” pertains due to the purpose of the humidifier to allow automatic introduction of water vapor into the air stream based upon measured conditions down stream. This invention provides the capability to humidify or cool spaces served by modular cooling systems without the need to expend heating energy to evaporate water. In addition it increases the capacity of water vapor introduction into an air stream from currently available systems due to the increased evaporative surfaces. [0004]
    • BRIEF SUMMARY OF THE INVENTION
  • The purpose of this invention is to allow introduction of water vapor into and removal of heat from an air stream that is moving through the unit. The unit provides support racks and catch basins for the installation of any media (made by others) that can allow cascading of water downward through the media and simultaneously allow air to pass horizontally through the media. The excess water that is not evaporated during the pass through the media drips from the bottom of the media is collected in basins at the bottom of the media and is drained away. This invention provides multiple sections of media that can be controlled (wetted or not) independently and also provides control capability to bypass the air stream around the media immediately stopping the evaporation process. [0005]
    • BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
  • FIG. 1—“Concept Illustration”[0006]
  • This illustration is a three view rendition of the unit that includes general information intended to assist in the understanding of the unit operation and construction. [0007]
  • FIG. 2—“Front Exterior View”[0008]
  • This is a view of the exterior construction of the unit showing orientation of equipment and access doors. [0009]
  • FIG. 3—“End Views—Right and Left Side”[0010]
  • This is an exterior view from each side of the unit that allows understanding of the overall shape and layout of the unit exterior cabinet. [0011]
  • FIG. 4—“Top Exterior View”[0012]
  • This illustration is a view looking down from the top of the unit. This allows an understanding of the orientation of equipment mounted in the proposed air paths. This view also includes two section lines that indication the orientation of the last two figures (FIG. 5 and [0013] 6) of this drawing group.
  • FIG. 5—“Section A (From Top View) Cross Section of Humidifier”[0014]
  • This section is a complete horizontal section of the unit at the station indicated by the section line shown on FIG. 4. [0015]
  • FIG. 6—“Section B (From Top View) Distribution Header”[0016]
  • This section is a partial horizontal section of a water distribution header to be installed at the top of each media section.[0017]
    • DETAILED DESCRIPTION OF THE INVENTION
  • This unit is a component of multiple parts. The outside housing is steel or aluminum sheet metal fabricated to produce a conduit to direct air into the intake of an air handler or duct. The air movement capacity of the associated air handler or duct that is producing the air movement determines the overall size of the housing. The internal frames and catch basins are sized to divide the available space into segments that will allow staging on and off of water flow capacity. [0018] Claim # 1 divides the available space into three (3) equal segments, Claim #2 divides the available space into four (4) unequal segments, and Claim # 3 divides the available space into two (2) equal segments. Each claim makes available movable damper blades that allow movement of the air stream through the housing without passing through the media.
  • This invention improves previous evaporative humidifier designs by increasing the available evaporative media surface and forcing passage of the entire air stream through the media sufficiently slow to humidify in a single pass. The bypass capability of the dampers also allow an increased accuracy of humidity control in the conditioned space. [0019]
  • The unit exterior enclosure is constructed sheet metal. Thickness based upon overall size of unit. Sheet metal can be aluminum, stainless steel, galvanized steel or black iron steel. The housing is formed in the shape as indicated in enclosed drawings. The overall housing dimensions are adjusted to match the unit to be served. A four (4) inch overhang is added to the connection dimensions on the front and both side connections. Three (3) front panels of the housing are removable or operable to allow removal of the media being held in the interior frames. [0020]
  • The interior frames are located in the housing of as indicated in the enclosed drawings. The location of the media frames in the [0021] Claim # 1 configuration is perpendicular to the longest longitudinal dimension. There are to be three (3) frames spaced to divide the longest dimension into two (2) equal sized larger areas and two (2) equal sized smaller areas. The locations such that the smaller areas are exactly one half (½) the size of the larger areas. The larger areas to be adjacent to each other in the middle and the smaller areas to be located at the ends of the longest dimension. One of the larger areas between the media frames and the small area at the opposite end of the unit shall be blanked* of at the top of the media frames with bypass dampers installed in the blanked* surface. The areas that are not blanked* at the top of the media frames shall be blanked* at the bottom of media frames with dampers installed in the blanking.
  • The media frames in the Claim #[0022] 2 configuration are located in the outside front face of the unit longest dimension and both end faces of the unit. The front face of the longest unit dimension consists of two (2) equal length media frames with catch pans and one (1) frame in each end face. The configuration of Claim #2 requires the blanking* to be installed across the entire top of the unit with the bypass dampers also installed in the top of the unit.
  • The location of the media frames in the [0023] Claim # 3 configuration is linearly on the center line of the longest dimension of the unit. The media frames in the Claim # 3 configuration consist of 2 equal length frames that total in length the longest dimension of the overall unit. A blank off plate with bypass dampers is installed at each end of the unit on opposite sides of the media frame to channel the air stream through the media frames when the bypass dampers are closed.
  • The frames are constructed of 16 gauge one half (½) inch by one (1) inch by one half (½) inch by 16 gauge stainless steel channels. The frames are constructed by cutting the channels to fit the dimensions of the interior surface of the housing in a tongue overlap manner and attaching the channels together in a configuration that forms air entering and leaving frames spaced apart by the thickness of the media being used plus one quarter (¼) inch. The media is then cut to match the interior dimensions of the housing and are placed in the collection pan between entering and leaving frames at each media location. The frames are bolted, riveted, screwed or spot welded to the unit housing at the locations as described above. [0024]
  • The media frame also includes a water distribution header located at the top of the frame between the entering and leaving segments. The header is constructed of a sheet metal cap that covers a three (3) inch plastic pipe cut to match the overall length of the frame header and split longitudinally for the length of the pipe. One of the pipe halves is attached in the frame header with aluminum angle brackets bolted to the housing and the half pipe at each end of the half pipe. A three eighths (⅜) inch plastic pipe is anchored to a one (1) inch by one half (½) inch sixteen (16) gauge stainless steel angle attached inside the half pipe. The three eighths plastic pipe has holes (approximately one eighth of an inch in diameter) drilled in the top of the pipe on three (3) inch centers for the entire length of the pipe. One end of the three eighths (⅜) inch pipe is capped and the other end of the pipe at each media location is attached to a three eighths (⅜) inch electric solenoid valve. All of the solenoid valves for the media locations are then piped into a one half (½) inch water pipe header that extends out of the unit at either end to allow connection of supply water for the humidifier unit. [0025]
  • The bypass dampers consist of stamped sheet metal plates bent to facilitate attachment of pivot point hardware and damper linkage hardware in a manner to allow the movement of an actuator rod to open and close the dampers in the face of the blank off plates as previously described. [0026]
  • This invention makes use of existing materials in a new configuration. The increased surface area of the wetted media and the multiple stages of humidification and control through the use of segmented media and bypass dampers makes available a new more efficient method of space humidification. The heat absorbed during the evaporation process also allows this unit to act as a cooling unit in certain configurations. [0027]
  • * Blanked indicates the installation of a continuous piece of sheet metal between the two media frames in a manner that prevents air movement directly through the unit from top to bottom. The dampers mounted in the blanking sheet metal would allow air to pass through the blanking metal if they are opened [0028]

Claims (3)

1. What I claim as my invention is as a free standing unit that is an assembly of components to be connected to other air handling units that accepts various types of media to be held it in a position that allows water to be directed downward through the media while directing an air stream to be drawn through the three independent media segments by the unit being served in a horizontal direction and is equipped with dampers that allow bypassing of the air around the media for control.
2. What I claim as my invention is as a free standing unit that is an assembly of components to be connected to other air handling units that accepts various types of media to be held it in a position that allows water to be directed downward through the media while directing an air stream to be drawn through the media by the unit being served in a horizontal direction at the air inlets to the unit and is equipped with dampers that allow bypassing of the air around the media through the top for control.
3. What I claim as my invention is as a free standing unit that is an assembly of components to be connected to an air duct and that accepts various types of media to be held it in a position that allows water to be directed downward through the media while directing an air stream to be drawn through the media by the air duct being served in a horizontal direction and is equipped with dampers that allow bypassing of the air around the media for control.
US10/337,044 2003-01-07 2003-01-07 Large capacity modular non-powered evaporative humidifier Abandoned US20040149832A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/337,044 US20040149832A1 (en) 2003-01-07 2003-01-07 Large capacity modular non-powered evaporative humidifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/337,044 US20040149832A1 (en) 2003-01-07 2003-01-07 Large capacity modular non-powered evaporative humidifier

Publications (1)

Publication Number Publication Date
US20040149832A1 true US20040149832A1 (en) 2004-08-05

Family

ID=32770185

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/337,044 Abandoned US20040149832A1 (en) 2003-01-07 2003-01-07 Large capacity modular non-powered evaporative humidifier

Country Status (1)

Country Link
US (1) US20040149832A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110083824A1 (en) * 2009-06-03 2011-04-14 Bripco Bvba Data Centre
US9930812B2 (en) 2010-05-26 2018-03-27 Bripco, Bvba Data centre cooling systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494596A (en) * 1980-05-16 1985-01-22 Haden Schweitzer Corporation Method and apparatus for conditioning air temperature and humidity
US4940475A (en) * 1989-09-26 1990-07-10 Yaeger Ronald J Variable capacity evaporative humidifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494596A (en) * 1980-05-16 1985-01-22 Haden Schweitzer Corporation Method and apparatus for conditioning air temperature and humidity
US4940475A (en) * 1989-09-26 1990-07-10 Yaeger Ronald J Variable capacity evaporative humidifier

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110083824A1 (en) * 2009-06-03 2011-04-14 Bripco Bvba Data Centre
US8514572B2 (en) 2009-06-03 2013-08-20 Bripco Bvba Data centre
US9069534B2 (en) 2009-06-03 2015-06-30 Bripco Bvba Data centre
US9648787B2 (en) 2009-06-03 2017-05-09 Bripco Bvba Data centre
US9723761B2 (en) 2009-06-03 2017-08-01 Bripco Bvba Data centre
US10485142B2 (en) 2009-06-03 2019-11-19 Bripco Bvba Data Centre
US9930812B2 (en) 2010-05-26 2018-03-27 Bripco, Bvba Data centre cooling systems
US11089718B2 (en) 2010-05-26 2021-08-10 Bripco Bvba Data centre cooling systems

Similar Documents

Publication Publication Date Title
US5816315A (en) Plate-type crossflow air-to-air heat exchanger having dual pass cooling
US3831395A (en) Air conditioner
US5349829A (en) Method and apparatus for evaporatively cooling gases and/or fluids
US8950200B2 (en) Evaporative condenser cooling unit and method
US6931883B2 (en) Two stage indirect evaporative cooling system
CN102907190A (en) System for air-conditioning the interior of a data processing center
US5893408A (en) Regenerative heat exchanger for dehumidification and air conditioning with variable airflow
US9920939B2 (en) Dehumidifer/cooler and method
US4230174A (en) Damper assembly
US20040149832A1 (en) Large capacity modular non-powered evaporative humidifier
EP1837610A2 (en) Room ventilation device with heat recovery from exhaust air
US4089188A (en) Evaporator coil
CH708202A2 (en) Ventilation system.
JP2002156137A (en) Air-conditioning humidifying equipment
US20100207286A1 (en) Humidifier with adjustable air flow
US8006962B2 (en) Humidifier with louvered air intake
CN209786489U (en) Anti-condensation ring network multi-interval electrical cabinet
CN219976648U (en) Automatically controlled built-in two cold source new trend dehumidifier
RU2177115C2 (en) Air conditioning facility
DeJong et al. A wet plate heat exchanger for conditioning closed greenhouses
JPH0225060Y2 (en)
JPS6317325A (en) Dehumidifier
CN219045774U (en) Indoor unit and air conditioner
CN210197588U (en) Fresh air dehumidifying unit
CN219555481U (en) Cold air wall making device and data center

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION