US1825498A - Unit for heating, cooling, and ventilating system - Google Patents

Unit for heating, cooling, and ventilating system Download PDF

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US1825498A
US1825498A US357308A US35730829A US1825498A US 1825498 A US1825498 A US 1825498A US 357308 A US357308 A US 357308A US 35730829 A US35730829 A US 35730829A US 1825498 A US1825498 A US 1825498A
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passages
air
casing
heating
furnace
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US357308A
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Selmer F Wogan
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • 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]
    • Y02B30/56—Heat recovery units
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/909—Regeneration

Definitions

  • This invention relates to a unit for heating, cooling and Ventilating systems, the general object of the invention being to provide a member having passages so arranged therein that air or the like can pass through one set of assages without contacting with air or the like passing through the other set of passages, whereby the iuid passing through one set of passages will change the temperature of the fluid passing through the other set.
  • This invention also consists in certain other features of construction and in the combination and arrangement of the several,
  • Figure 1 is a sectional view showing the invention used as a ventilator.
  • Figure'2 is a section on line 2 2 of Figure 1.
  • Figure 3 is a perspective view of one of the rectangular parts of the device.
  • Figure 4 is aA section on line 4-4 of Figure 1.
  • Figure 5 is a section on line 5-5 of Figure 1.
  • Fi ure 6 is aview showing a modification, applied toA a furnace.
  • Figure 7 is a sectional view showing a modification.
  • Figure 8 is a section online 8-8 of Figure 7.
  • Figure 9 is a section on line 9-.9 of Figure 7.
  • Figure 10 is a perspective view, with parts in section, of the unit shown in Figure 6.
  • y/ Figurell is a view showing the invention in use for Ventilating a building by conducting cold fresh air tothe air chamber of the furnace and conducting the foul air from the building.
  • Figure 12 is a view showing the invention used for heating the cold air entering the fire box of the furnace by the products of combustion passing from the furnace.
  • Figure 13 is a view showing fans used for creating a forced draft in both sets of air passages.
  • the numeral 1 indicates a casing passing through an o ning 2 in a wall 3 of a building, this casing aving a pair of upper and lower openings 4, 4 in each end thereof, the openings 4 being in communication with the interior of the building and the openings 4-with the atmosphere.
  • a pairof rectangular housings 5 and 5 is placed in the casing, one at each end thereof, each housing beingy diagonally positioned, Vwith its upper-and lower corners attached to the inner wall of the upper and lower openings, as shown at 6,v and with its outer corner attached to each end of the casing, as shown at 7
  • a partition plate 8 connects the inner corners of the two housings together,.so that this partition plate and portions of the housings form upper and lower chambers 9 in the casing.
  • Each housing is divided by the partitions l0 into two sets of passages 11 and 12,- one set of passages being arranged at right angles to the other set, with one set of passages vof each housin being in communication with the lower c amber 9 and the other set being in communication with the upper chamber 9, the passages which are in communication with the upper chamber 9 being also in communication with the lower openings 4, 4 and the passages which are in communication with the lower chamber 9 are in communication with the upper openings.
  • the foul air from the building will pass through the upper lopening 4 through the passages 11 of the housing 5 into the lower chamber 9 and through the passages 11 of the housing 5 to the atmosphere throu h the upper opening 4.
  • Figures 6, 7, 8, 9 and 1() show a slight modiiication, in which a housing 14 replaces the two housings 5 and 5', the ends of this housing 14 being tapered, as shown at 15, with the partitions 16 forming the air passages 1n the housing also tapered.
  • Strips 17 close the ends of alternate passages on one side of the tapered portion and similar strips 17 close the ends of the other alternate passages on the opposite side of the tapered portion, so that theends of one set of passages open out through one side of each tapered portion and the other set o en out through the other side of each tapere portion.
  • FIG. 6 shows this arrangement used for heatfurnace Al by the products of combustion from the furnace.
  • the housing is shown at 14, with one set of passages opening out into the atmos here, as shown at 15, and the opposite set o assages being connected with the smoke ipe 6 ofthe furnace.
  • the set of passages w 'ch are connected with the smoke pipe are also connected with a chimney, portion of which is shown at i 17, and the other.set of passages is connected i .es
  • FIG. 7 shows a housing 14 used as ventilating means, in which the fluid passes. in opposite directions through the passages, this arrangement being somewhat similar to that shown in Figure 1.
  • Figure 11 shows a housing 14" used for Ventilating a building which is heated by a hot air furnace A', the outer ends of one set of' passages being in communication with an air pipe 19, and the outer ends of the other passages being in communication with a discharge pipe 20.
  • the other ends of the passages which are connected with the pipe 19 are connected by a 21 with the air chamber of the furnace and a conduit 22 leads from a register 23 in the floor of the room above the furnace room to the inner ends of the passages which are in communication with the discharge 20.
  • heated air will pass from the room or buildingthrough the register 23 and the conduit 22 and through one set of passa es in the ⁇ housing 14'( to the discharge 20 and fresh air will enter throu h the pipe 19, the other set of passages in t e housing 14 into the pipe 21 and thus enter the hot air chamber of the furnace and then pass into the building.
  • the building or room is provided with fresh heated air, this air being heated by the foul warm air leaving the building or room.
  • Figure 12 shows a similar arrangement for supplying warm air to the fire box of an oil burning furnace A the products of combustion from the furnace passing ⁇ through one set of passages in the housing 14x to the chimney, and air passing through the other set of passages in said housing 14x into the pipe 24 which leads it to the fire box of the furnace.
  • the air passing to the furnace is heated by the products of combustion therefrom.
  • Figure 13 is a modification showing the use of a fan 25 in each of the inlet members 19 and outlet member 20', these fans being arranged on the same shaft 28 which is driven by a motor 27. These fans act to force air through the device and to draw the warm air or products of combustion through the second set of passages in the device.
  • a unit for heating, cooling and ventilating systems comprising a casing having upper and lower alined openlngs in each end thereof, a conduit diagonally supported within the casing adjacent each end and partitions dividing each conduit into two series of 'passages, one series being arranged at right angles to the other, whereby one series communicates with the upper-opening, and the other series communicates with the lower opening of the casing for the purpose specified.
  • a unit for heating, cooling and ventilating systems comprising a casing having upper and lower alined openings in each end thereof, a conduit diagonally arranged in.
  • each conduit from the upper and lower of the casing at one side of said opening and from the ad] acent end wall of the casing and partitions dividing each conduit into two series of passages, one series being arranged in right angular relation to the other, where-'f by one series communicates with the upper opening, and the other series communicates with the lower opening of the casing for the purpose specific 3.
  • a unit for heating, cooling and ventilating systems com rising a casing havin upper and lower aline openlngs in each en ⁇ thereof, a conduit diav onally arranged in each end of the casing am?

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)

Description

Saepti?, i931. s. F. WOGN 1,825,498
' UNIT FOR HEATING, COOLING, AND VENTILATING SYSTEM WITNESS: ATTORNEY S. F. WOGAN Sept. 29, 1931.
`UN1T FOR HEATING, COOLING, AND VENTILATING SYSTEM Filed April 22, 1929 3 Sheets-Sheet g l@ elwzeiqqn ATTORNEY Sepih, 2Q, NEM. Y s. F. woGAN 1,825,498
.UNIT Foa HEATING, COOLING, AND VENTILATING SYSTEM Filed April 22. 1929 3 Sheets-Sheet .'5
N @l n SeZWze/'Zagawz l Patented Sept. 29, 1931 UNITED STATES PATENT orifice am F. woeA'N, or'uoNrEvInEo, mmm'sorn i UNIT FOB HEATING, COOLING, AND .VENTILATING SYSTEK l l Application led April 22, 1929. Serial No. 857,308.
This invention relates to a unit for heating, cooling and Ventilating systems, the general object of the invention being to provide a member having passages so arranged therein that air or the like can pass through one set of assages without contacting with air or the like passing through the other set of passages, whereby the iuid passing through one set of passages will change the temperature of the fluid passing through the other set. l
This invention also consists in certain other features of construction and in the combination and arrangement of the several,
parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims. r
In describing the invention in detail, reference will be had to the accompanying drawings wherein like'characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a sectional view showing the invention used as a ventilator.
Figure'2 is a section on line 2 2 of Figure 1.
Figure 3 is a perspective view of one of the rectangular parts of the device. v Figure 4 is aA section on line 4-4 of Figure 1.
Figure 5 is a section on line 5-5 of Figure 1.
,Fi ure 6 is aview showing a modification, applied toA a furnace.
Figure 7 is a sectional view showing a modification.
Figure 8 is a section online 8-8 of Figure 7. f
Figure 9 is a section on line 9-.9 of Figure 7.
Figure 10 is a perspective view, with parts in section, of the unit shown in Figure 6.
y/Figurell is a view showing the invention in use for Ventilating a building by conducting cold fresh air tothe air chamber of the furnace and conducting the foul air from the building. I
Figure 12 is a view showing the invention used for heating the cold air entering the fire box of the furnace by the products of combustion passing from the furnace.
Figure 13 is a view showing fans used for creating a forced draft in both sets of air passages. l
Referring to Figures 1 to 5, the numeral 1 indicates a casing passing through an o ning 2 in a wall 3 of a building, this casing aving a pair of upper and lower openings 4, 4 in each end thereof, the openings 4 being in communication with the interior of the building and the openings 4-with the atmosphere. A pairof rectangular housings 5 and 5 is placed in the casing, one at each end thereof, each housing beingy diagonally positioned, Vwith its upper-and lower corners attached to the inner wall of the upper and lower openings, as shown at 6,v and with its outer corner attached to each end of the casing, as shown at 7 A partition plate 8 connects the inner corners of the two housings together,.so that this partition plate and portions of the housings form upper and lower chambers 9 in the casing. Each housing is divided by the partitions l0 into two sets of passages 11 and 12,- one set of passages being arranged at right angles to the other set, with one set of passages vof each housin being in communication with the lower c amber 9 and the other set being in communication with the upper chamber 9, the passages which are in communication with the upper chamber 9 being also in communication with the lower openings 4, 4 and the passages which are in communication with the lower chamber 9 are in communication with the upper openings. Thus the foul air from the building will pass through the upper lopening 4 through the passages 11 of the housing 5 into the lower chamber 9 and through the passages 11 of the housing 5 to the atmosphere throu h the upper opening 4. Cold air will pass t rough the lower openin 4 through the passages 12 in the housing 5 into the upper chamber 9 and then this cold air will pass through the passages 12 in the housing 5 and will .enter the building through the lower opening 4. This cold air is heated as it passes throu h the device by coming into contact with t e heated walls of the passages which ing an air supply to a have been heated by the ow of warm foul air from the building. As shown in Figures 3, 4 and 5, the sides of the passages 12 are closed by the strips 13 which are connected with the ends -of every other pair of partitions l0 and the sides of the passages 11 are closed by similar strips.
Thus it will be seen that I have provided simple means for not only supplyin a'building or the like with fresh air an e]ect1n(gi the warm foul air, but I have also provide means whereby the inflowing cold air 1s heated by the outiiowing warm air.
Figures 6, 7, 8, 9 and 1() show a slight modiiication, in which a housing 14 replaces the two housings 5 and 5', the ends of this housing 14 being tapered, as shown at 15, with the partitions 16 forming the air passages 1n the housing also tapered. Strips 17 close the ends of alternate passages on one side of the tapered portion and similar strips 17 close the ends of the other alternate passages on the opposite side of the tapered portion, so that theends of one set of passages open out through one side of each tapered portion and the other set o en out through the other side of each tapere portion. Thus by connecting two of the side portions of the tapered parts of thehousing with two conduits and the other parts of the tapered portions with other conduits, air will flow in an opposite direction through the other set of passages. Figure 6 shows this arrangement used for heatfurnace Al by the products of combustion from the furnace. The housing is shown at 14, with one set of passages opening out into the atmos here, as shown at 15, and the opposite set o assages being connected with the smoke ipe 6 ofthe furnace. The set of passages w 'ch are connected with the smoke pipe are also connected with a chimney, portion of which is shown at i 17, and the other.set of passages is connected i .es
by a conduit 18'with the ash it or iire box of the furnace. Thus the prodliicts of combustion passing through one set of passages will heat the atmospheric air passing through the other set of passages so that this air will be heated before it enters. the furnace, thus increasing the combustion of the fuel. Figure 7 shows a housing 14 used as ventilating means, in which the fluid passes. in opposite directions through the passages, this arrangement being somewhat similar to that shown in Figure 1.
Figure 11 shows a housing 14" used for Ventilating a building which is heated by a hot air furnace A', the outer ends of one set of' passages being in communication with an air pipe 19, and the outer ends of the other passages being in communication with a discharge pipe 20. The other ends of the passages which are connected with the pipe 19 are connected by a 21 with the air chamber of the furnace and a conduit 22 leads from a register 23 in the floor of the room above the furnace room to the inner ends of the passages which are in communication with the discharge 20. Thus heated air will pass from the room or buildingthrough the register 23 and the conduit 22 and through one set of passa es in the` housing 14'( to the discharge 20 and fresh air will enter throu h the pipe 19, the other set of passages in t e housing 14 into the pipe 21 and thus enter the hot air chamber of the furnace and then pass into the building. In this way, the building or room is provided with fresh heated air, this air being heated by the foul warm air leaving the building or room.
Figure 12 shows a similar arrangement for supplying warm air to the fire box of an oil burning furnace A the products of combustion from the furnace passing `through one set of passages in the housing 14x to the chimney, and air passing through the other set of passages in said housing 14x into the pipe 24 which leads it to the fire box of the furnace. Thus the air passing to the furnace is heated by the products of combustion therefrom.
Figure 13 is a modification showing the use of a fan 25 in each of the inlet members 19 and outlet member 20', these fans being arranged on the same shaft 28 which is driven by a motor 27. These fans act to force air through the device and to draw the warm air or products of combustion through the second set of passages in the device.
It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.
It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.
What I claim is 1. A unit for heating, cooling and ventilating systems comprising a casing having upper and lower alined openlngs in each end thereof, a conduit diagonally supported within the casing adjacent each end and partitions dividing each conduit into two series of 'passages, one series being arranged at right angles to the other, whereby one series communicates with the upper-opening, and the other series communicates with the lower opening of the casing for the purpose specified.
2.v A unit for heating, cooling and ventilating systems comprising a casing having upper and lower alined openings in each end thereof, a conduit diagonally arranged in.
-each end of the casing, means for supporting each conduit from the upper and lower of the casing at one side of said opening and from the ad] acent end wall of the casing and partitions dividing each conduit into two series of passages, one series being arranged in right angular relation to the other, where-'f by one series communicates with the upper opening, and the other series communicates with the lower opening of the casing for the purpose specific 3. A unit for heating, cooling and ventilating systems com rising a casing havin upper and lower aline openlngs in each en `thereof, a conduit diav onally arranged in each end of the casing am? tween said openings, partitlons dividing each conduit into two series of passages, one series being arranged in right angular relation to' the other, whereby one series communicates with the upper opening and the other series communicates with the lower opening of the casing, and a partitionv connecting the two adjacenteonduits and dividing the casing vinto upper and lower compartments for the purpose speciiied.-
In testimony whereof I aiiix my signature.
SELMER F. WOGAN.
having a portion located be-
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Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825210A (en) * 1954-07-19 1958-03-04 Clifford H Carr Heat exchange apparatus
US2912749A (en) * 1956-01-13 1959-11-17 Modine Mfg Co Method of making a heat exchanger
US3224842A (en) * 1963-01-10 1965-12-21 Minnesota Mining & Mfg Waste gas incinerating afterburners
US3229763A (en) * 1963-07-16 1966-01-18 Rosenblad Corp Flexible plate heat exchangers with variable spacing
US3507115A (en) * 1967-07-28 1970-04-21 Int Harvester Co Recuperative heat exchanger for gas turbines
US4116271A (en) * 1975-02-04 1978-09-26 Guido Amandus De Lepeleire Counter-current bumped plates heat exchanger
US4125153A (en) * 1976-03-25 1978-11-14 Stoneberg James H Heat exchanger
US4263887A (en) * 1979-05-30 1981-04-28 Dowdall Donald H Forced air wood furnace system
US4327803A (en) * 1978-04-25 1982-05-04 Suddeutsche Kuhlerfabrik Julius Fr. Behr GmbH & Co. Arrangements for cross-flow heat exchanger units
US4377201A (en) * 1980-04-17 1983-03-22 Aktiebolaget Bahco Ventilation Arrangement in a heat recovery unit
US4391321A (en) * 1979-03-21 1983-07-05 Svante Thunberg Heat exchanger in plants for ventilating rooms or buildings
US4441549A (en) * 1981-10-29 1984-04-10 Belgorodsky Zavod Energeticheskogo Mashinostroenia Heat exchanger within dense gravity layer
US4512393A (en) * 1983-04-11 1985-04-23 Baker Colony Farms Ltd. Heat exchanger core construction and airflow control
US4609039A (en) * 1982-10-05 1986-09-02 Japan Vilene Co. Ltd. Counterflow heat exchanger
US4619114A (en) * 1985-10-15 1986-10-28 Ralph Wilson Auxiliary outside air refrigerating mechanism
US4653574A (en) * 1983-08-04 1987-03-31 L. B. White Company, Inc. Air to air heat exchanger
US4799539A (en) * 1985-03-12 1989-01-24 Advanced Design & Manufacture Limited Thermally efficient room ventilator
US4823867A (en) * 1981-09-11 1989-04-25 Pollard Raymond J Fluid flow apparatus
US5002118A (en) * 1990-01-16 1991-03-26 Olmstead Research Inc. Heat recovery system
AT396833B (en) * 1987-07-15 1993-12-27 Vaillant Gmbh HEAT EXCHANGER IN A HOUSING
US5435377A (en) * 1993-07-14 1995-07-25 Jullan Enterprises Ltd. Ventilator with air-to-air heat exchanger and pressure responsive damper
US5660228A (en) * 1995-12-12 1997-08-26 Altech Energy Modular air-to-air heat exchanger
US6182747B1 (en) * 1995-09-13 2001-02-06 Nautica Dehumidifiers, Inc. Plate-type crossflow air-to-air heat-exchanger comprising side-by-side-multiple small-plates
US6293338B1 (en) 1999-11-04 2001-09-25 Williams International Co. L.L.C. Gas turbine engine recuperator
US6357113B1 (en) 1999-11-04 2002-03-19 Williams International Co., L.L.C. Method of manufacture of a gas turbine engine recuperator
US20030051454A1 (en) * 2001-09-20 2003-03-20 Yeung Kui Wong Ventilator or ventilating apparatus with thermal exchanger and air filter
US20050087330A1 (en) * 2003-10-28 2005-04-28 Yungmo Kang Recuperator construction for a gas turbine engine
US20050098309A1 (en) * 2003-10-28 2005-05-12 Yungmo Kang Recuperator assembly and procedures
US20050133196A1 (en) * 2003-12-23 2005-06-23 Venmar Ventilation Inc. Pressure equilizing system
US20050133204A1 (en) * 2003-12-17 2005-06-23 Renewaire, Llc Energy recovery ventilator
US20070158049A1 (en) * 2005-08-16 2007-07-12 Lg Electronics Inc. Ventilation system
US20080110041A1 (en) * 2006-11-14 2008-05-15 Robertshaw Controls Company Method for Drying Moist Articles With a Dryer
US20080230206A1 (en) * 2005-11-02 2008-09-25 Air Tech Equipment Ltd. Energy Recovery and Humidity Control
US20100122794A1 (en) * 2006-11-02 2010-05-20 Johannes Dirk Mooij Method for coupling two adjacent heat exchangers and coupling unit for use therein
US20110036541A1 (en) * 2008-04-16 2011-02-17 Mitsubishi Electric Corporation Heat exchange ventilator
US20110198061A1 (en) * 2010-02-12 2011-08-18 Lee-Long Chen Heat exchange device for closed electrical apparatus
WO2013023722A1 (en) * 2011-08-17 2013-02-21 Klingenburg Gmbh Cooling device for outside air used for production of a supply air flow and method for cooling same
US20130095744A1 (en) * 2011-10-17 2013-04-18 Lennox Industries Inc. Sensor mounting panel for an energy recovery ventilator unit
US20130281001A1 (en) * 2010-12-20 2013-10-24 Daikin Industries, Ltd. Ventilation device
US20140131004A1 (en) * 2010-07-20 2014-05-15 Gerald J. Sheren Fresh air heat exchanger with air treatment system
US20140190661A1 (en) * 2013-01-09 2014-07-10 Thesan S.P.A. Air exchange device for buildings

Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825210A (en) * 1954-07-19 1958-03-04 Clifford H Carr Heat exchange apparatus
US2912749A (en) * 1956-01-13 1959-11-17 Modine Mfg Co Method of making a heat exchanger
US3224842A (en) * 1963-01-10 1965-12-21 Minnesota Mining & Mfg Waste gas incinerating afterburners
US3229763A (en) * 1963-07-16 1966-01-18 Rosenblad Corp Flexible plate heat exchangers with variable spacing
US3507115A (en) * 1967-07-28 1970-04-21 Int Harvester Co Recuperative heat exchanger for gas turbines
US4116271A (en) * 1975-02-04 1978-09-26 Guido Amandus De Lepeleire Counter-current bumped plates heat exchanger
US4125153A (en) * 1976-03-25 1978-11-14 Stoneberg James H Heat exchanger
US4327803A (en) * 1978-04-25 1982-05-04 Suddeutsche Kuhlerfabrik Julius Fr. Behr GmbH & Co. Arrangements for cross-flow heat exchanger units
US4391321A (en) * 1979-03-21 1983-07-05 Svante Thunberg Heat exchanger in plants for ventilating rooms or buildings
US4263887A (en) * 1979-05-30 1981-04-28 Dowdall Donald H Forced air wood furnace system
US4377201A (en) * 1980-04-17 1983-03-22 Aktiebolaget Bahco Ventilation Arrangement in a heat recovery unit
US4823867A (en) * 1981-09-11 1989-04-25 Pollard Raymond J Fluid flow apparatus
US4441549A (en) * 1981-10-29 1984-04-10 Belgorodsky Zavod Energeticheskogo Mashinostroenia Heat exchanger within dense gravity layer
US4609039A (en) * 1982-10-05 1986-09-02 Japan Vilene Co. Ltd. Counterflow heat exchanger
US4512393A (en) * 1983-04-11 1985-04-23 Baker Colony Farms Ltd. Heat exchanger core construction and airflow control
US4653574A (en) * 1983-08-04 1987-03-31 L. B. White Company, Inc. Air to air heat exchanger
US4799539A (en) * 1985-03-12 1989-01-24 Advanced Design & Manufacture Limited Thermally efficient room ventilator
US4619114A (en) * 1985-10-15 1986-10-28 Ralph Wilson Auxiliary outside air refrigerating mechanism
AT396833B (en) * 1987-07-15 1993-12-27 Vaillant Gmbh HEAT EXCHANGER IN A HOUSING
US5002118A (en) * 1990-01-16 1991-03-26 Olmstead Research Inc. Heat recovery system
US5435377A (en) * 1993-07-14 1995-07-25 Jullan Enterprises Ltd. Ventilator with air-to-air heat exchanger and pressure responsive damper
US6182747B1 (en) * 1995-09-13 2001-02-06 Nautica Dehumidifiers, Inc. Plate-type crossflow air-to-air heat-exchanger comprising side-by-side-multiple small-plates
US5660228A (en) * 1995-12-12 1997-08-26 Altech Energy Modular air-to-air heat exchanger
US6293338B1 (en) 1999-11-04 2001-09-25 Williams International Co. L.L.C. Gas turbine engine recuperator
US6357113B1 (en) 1999-11-04 2002-03-19 Williams International Co., L.L.C. Method of manufacture of a gas turbine engine recuperator
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