US2537220A - Heat exchanger - Google Patents

Heat exchanger Download PDF

Info

Publication number
US2537220A
US2537220A US31524A US3152448A US2537220A US 2537220 A US2537220 A US 2537220A US 31524 A US31524 A US 31524A US 3152448 A US3152448 A US 3152448A US 2537220 A US2537220 A US 2537220A
Authority
US
United States
Prior art keywords
passages
disc
discs
heat exchanger
fluid
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.)
Expired - Lifetime
Application number
US31524A
Other languages
English (en)
Inventor
Hahnemann Horst Wolfhard
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.)
Power Jets Research and Development Ltd
Original Assignee
Power Jets Research and Development Ltd
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 Power Jets Research and Development Ltd filed Critical Power Jets Research and Development Ltd
Application granted granted Critical
Publication of US2537220A publication Critical patent/US2537220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • 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
    • Y10S165/009—Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/013—Movable heat storage mass with enclosure
    • Y10S165/016—Rotary storage mass
    • Y10S165/027—Rotary storage mass with particular rotary bearing or drive means
    • Y10S165/028—Ring gear surrounding cylindrical storage mass

Definitions

  • This-invention relates to improvements in heat exchangers of the regenerative kind, 1. e. of the kind wherein a heat absorbing and transmitting matrix is moved successively into a region of hotter fluid and into a L gion of colder fluid, so as to absorb heat from the former and impart heat to the latter; v I
  • the matrix is generally sub-divided to form passages or cells and each of these as it is transferred from the hotter fluid to the colder fluid carries its fluid charge with it.
  • the two fluids are at substantially different pressures as for example in the case of a gas turbine heat exchanger, wherein the colder fluid is air delivered by the compressor at higher pressure, while the hotter fluid is exhaust gas at a considerably lower pressure, there is a. pressure loss as the passages or cells are transferred from one region to the other, and this reduces the efl'lciency of the apparatus.
  • the invention is based on the principle that to prevent this loss, means may be provided whereby a cell which has just left the high pressure reion is put into communication with a cell which is just about to enter the said region at a moment when both cells are out 01f from the high pressure and low pressure regions. This equalizes the pressure in the two cells to a value intermediate the two pressures and considerably decreases the above-mentioned pressure loss.
  • a heat exchanger according to the present invention comprises two oppositely rotatable coaxial disc-like matrix members having a plurality of axially directed passages and a fluid tight partition extending between the discs and adapted to divide the space between the discs into two parts, the said partition being provided with a number of axially directed passages, so that as the disc-like members rotate, each passage in the matrix passes and enters into communication with one or more passages in the partition.
  • the disc-like members are preferably of similar dimensions and the two parts are adapted to serve as a high pressure region and a low pressure region.
  • Figure 1 is a transverse section in diagrammatic form
  • Figure 2 is a section on the line IIII of Figure 1.
  • the apparatus comprises two disc-like matrix members I, 2, for example of ceramic material, arranged co-axially on shafts 3, 4 respectively, and adapted to rotate in opposite directions.
  • Each disc has a number of axially directed passages I a, 2a respectively.
  • the discs I, 2 rotate against the ends of cylindrical ducts 8, 9 respectively, which are each provided with fluid tight partitions I 0, II respectively, so as to divide each of the ducts 8, 9, into two semi-circular ducts respectively 8a, 8b, 9a, 9b.
  • the discs I and 2 are driven in opposite directions, for example, by electric motors I3 and I4 through gearing I5, I6 and I1, I8 respectively.
  • Hotter fluid at a relatively lower pressure such as the exhaust gases of a gas turbine engine flows along ducts 8a, 9a, through those passages Ia, 2a, which are in alignment with said. ducts, into chamber I5 and are then led away through duct 5a, for example to atmosphere.
  • Colder fluid at a relatively higher pressure such as the air delivery from a compressor of a gas turbine engine is led through duct Ta to chamber I and thence through those passages Ia, 2a, which are in communication with chamber 5 to ducts 8b, 9b, respectively, and thence through auxiliary ducting (not shown) to any desired locality such as the combustion system of a gas turbine engine.
  • auxiliary ducting not shown
  • each passage 5a is divided longitudinally into two or more parts as for example by a block l2 as shown in Figure 2 in order to prevent a passage 2a which is just leaving the low pressure chamber 6 from making communication with another passage 2a which i just about to enter this chamber, and similarly to prevent communication between two such passages la.
  • the efiect of the above described arrangement is to enable relatively smaller discs to be used, the heat exchanger operating more uniformly and having a higher heat transmission co-efiicient than would otherwise be possible. Furthermore, if it is desired to divide the area of the discs I, 2, into unequal portions in order further to minimise the pressure loss, this can easily be arranged without the necessity of introducing any complicated structure.
  • a heat exchanger comprising a casing, two oppositely rotatable and axially separated coaxial disc like matrix members forming opposite end walls for said casing and each having a plurality of axially directed passages, a fluidtight partition extending between the discs and adapted to divide the casing between said discs into two chambers, said casing having a duct constituting an inlet into one of said chambers and a second duct constituting an outlet from the other of said chambers, further ducting adapted in combination with said discs to lead one fluid through some of the passages in each disc into one of said chambers and to lead another fiuid from the other chamber through other passages in each disc, the said partition being provided with at least one axially directed channel whereby as the discs rotate a passage in one disc as it moves past said channel enters temporarily into communication with a second passage in said second disc as said second passage moves past said channel whereby the pressure in said passages are equalized.
  • a heat exchanger according to claim 1 wherein the partition is provided with a number of axially directed channels and means are provided to divide each said channel longitudinally into at least two non-communicating parts.
  • a heat exchanger according to claim 2 wherein said further ducting comprises for each disc a duct closed at one end by said disc and divided longitudinally by a fluid-tight partition into two parts whereby one of said parts is adapted to communicate with some of the passages in said disc, while the other part is adapted to communicate with other passages in said disc.

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)
US31524A 1947-08-29 1948-06-07 Heat exchanger Expired - Lifetime US2537220A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB23934/47A GB635851A (en) 1947-08-29 1947-08-29 Improvements in regenerative heat exchangers
GB150748X 1948-07-15

Publications (1)

Publication Number Publication Date
US2537220A true US2537220A (en) 1951-01-09

Family

ID=26251018

Family Applications (1)

Application Number Title Priority Date Filing Date
US31524A Expired - Lifetime US2537220A (en) 1947-08-29 1948-06-07 Heat exchanger

Country Status (5)

Country Link
US (1) US2537220A (en, 2012)
BE (1) BE484116A (en, 2012)
CH (1) CH269307A (en, 2012)
FR (1) FR969433A (en, 2012)
GB (1) GB635851A (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231732B (de) * 1954-10-27 1967-01-05 Svenska Rotor Maskiner Ab Regenerativwaermetauscher mit zylindrischem Rotor
US3364415A (en) * 1965-02-01 1968-01-16 Bell Telephone Labor Inc Magnetic pulse excitation of fallou generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932492A (en) * 1955-04-21 1960-04-12 Bmw Triebwerkbau Ges Mit Besch Regenerative heat exchanger with moveable matrix

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB270759A (en) * 1926-05-07 1928-07-26 Carl Bacher An improved heat exchange apparatus working on the regenerative principle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB270759A (en) * 1926-05-07 1928-07-26 Carl Bacher An improved heat exchange apparatus working on the regenerative principle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231732B (de) * 1954-10-27 1967-01-05 Svenska Rotor Maskiner Ab Regenerativwaermetauscher mit zylindrischem Rotor
US3364415A (en) * 1965-02-01 1968-01-16 Bell Telephone Labor Inc Magnetic pulse excitation of fallou generator

Also Published As

Publication number Publication date
BE484116A (en, 2012)
GB635851A (en) 1950-04-19
FR969433A (fr) 1950-12-20
CH269307A (de) 1950-06-30

Similar Documents

Publication Publication Date Title
US2800120A (en) Pressure exchangers
GB1230153A (en, 2012)
US2852915A (en) Improvements in pressure exchanger scavenging
US2665120A (en) Regenerative heat exchanger
US3978912A (en) Regenerative heat exchanger
US2537220A (en) Heat exchanger
GB805195A (en) Improvements in or relating to gas turbine power plant
GB689484A (en) Improvements in or relating to heat exchangers
US2848871A (en) Low pressure scavenging arrangements of pressure exchangers
US2795109A (en) Combined combustion chamber, heat exchanger and flame trap for combustion turbine plants
US3095704A (en) Pressure exchanger apparatus
US2759660A (en) Pressure exchangers
US2946184A (en) Pressure exchangers and applications thereof
GB1382876A (en) Regenerative heat exchanger devices
US3076422A (en) Pressure exchangers
US2762557A (en) Pressure exchangers
GB694856A (en) Improvements in or relating to hot-gas engines and refrigerating engines and heat pumps operating on the reversed hot gas engine principle
US2821367A (en) Recovery of high pressure fluid in rotary heat exchanger
US2753108A (en) Pressure exchangers
GB647699A (en) Improvements in and relating to plate type heat exchangers
GB578686A (en) Improvements in regenerative gas turbine plant
US3421575A (en) Heat exchanger
US1880196A (en) Air preheater
US2840351A (en) Temperature equalizing means for regenerative air preheater structure
US3002357A (en) Pressure exchangers