DE2731345A1 - Steam heated multistage air heating flow arrangement - has pressure stages with partitions for steam overflow and condensate drains - Google Patents

Steam heated multistage air heating flow arrangement - has pressure stages with partitions for steam overflow and condensate drains

Info

Publication number
DE2731345A1
DE2731345A1 DE19772731345 DE2731345A DE2731345A1 DE 2731345 A1 DE2731345 A1 DE 2731345A1 DE 19772731345 DE19772731345 DE 19772731345 DE 2731345 A DE2731345 A DE 2731345A DE 2731345 A1 DE2731345 A1 DE 2731345A1
Authority
DE
Germany
Prior art keywords
steam
condensate
partitions
air heater
air heating
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.)
Pending
Application number
DE19772731345
Other languages
German (de)
Inventor
Jakob Hafner
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 DE19772731345 priority Critical patent/DE2731345A1/en
Publication of DE2731345A1 publication Critical patent/DE2731345A1/en
Pending legal-status Critical Current

Links

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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0008—Air heaters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

The air heater is heated by steam which flows through the ribbed tubes. The latter can have round or elliptical cross section. The energy in steam is utilised with high efficiency so that the heater has compact design. Partition walls (b, c) are built into the steam and condensation dome in a unit. These partition walls cause steam overflow over one or more pipe banks (d) into a lower steam pressure stage. This series sequence can be repeated a number of times. The steam pressure staging is carried out in opposite direction to the air flow direction. Each pressure stages (f, g) has a separate condensate drain in the given pressure stage condensate box (h, i).

Description

jakob Hafner S948 Mindeiheim ,den 11.7.77jakob Hafner S 948 Mindeiheim, July 11th, 1997

in ■=·. J. Hafnar nammlngar 8tr. I Ha/B οin ■ = ·. J. Hafnar nammlngar 8tr. I Ha / B ο

Induatrla-Elnrlehtungan Tat MMi/aoiInduatrla-Elnrlehtungan Tat MMi / aoi

a.a.

Jakob Hafner
IngenieurJakob Hafner
engineer

Ramminger Str.1
8948 Mindeiheim Ramminger Str. 1
8948 Mindeiheim

Dampfbeheizter Stufen-Durchström-LufterhitzerSteam-heated step through-flow air heater

Die Erfindung betrifft eine Wärmeübertragungsvorrichtung zur Erhitzung von Luft,wobei der sogenannte Lufterhitzer mit Dampf beheizt wird und die Wärme mittels runden oder ovalen Spiralrippenrohren übertragen wird.Die Rohre zur Wärmeübertragung können auch ohne Spiralen oder Rippen sein.Die besonderen Paktoren die bei der Erfindung eine Rolle spielen,betreffen die Konstruktion der Vorrichtung. Diese Konstruktion muß so beschaffen sein,daß eine ein- oder mehrstufige Entspannung des Dampfes in einem Lufterhitzer als eine Baueinheit gewährleistet ist und die Dampfentspannung durch Überströmung des Dampfes über ein Rohrregister in die nächste Entspannungsstufe erfolgt.Dabei wird eine erhöhte Dampfströmung in den einzelnen Registern des Lufterhitzers erreicht.The invention relates to a heat transfer device for heating air, the so-called air heater is heated with steam and the heat is transferred by means of round or oval spiral finned tubes Heat transfer can also be without spirals or ribs. The special factors in the invention Play a role relate to the design of the device. This construction must be such that a single or multi-stage expansion of the steam in an air heater as a structural unit is guaranteed and the steam expansion by the steam flowing over a pipe register to the next expansion stage there is an increased steam flow in the individual registers of the air heater reached.

Es sind Konstruktionen bekannt,die zur Aufwärmung der Luft mittels Dampf verwendet werden jedoch die Merkmale der Erfindung, die vorallem der besseren Wärmeausnutzung (Verwertung der Nachverdampfung durch Stufenentspannung in einer Baueinheit bei gleichzeitiger Erhöhung des Wärmeübergangswertes durch erhöhte Dampfströmung in den einzelnen Registern) dient,nicht aufweisen,Durch die vorliegende Erfindung kann der Anergie-Anteil um ca. 1o % abgebaut werden wobei gleichzeitig die Heizfläche der Lufterhitzer gegenüber herkömmlichen Konstruktionen,verkleinert werden kann.Constructions are known which are used to heat the air by means of steam, but the features of the invention, which are primarily used for better heat utilization (utilization of post-evaporation through step relaxation in one unit with simultaneous increase in the heat transfer value through increased steam flow in the individual registers), do not With the present invention, the anergy component can be reduced by approx. 10% , while at the same time the heating surface of the air heater can be reduced compared to conventional constructions.

Durch den stufenweisen Druckabbau im Heizregister wird die Nachverdampfung gefördert und somit der Anergie-Anteil erhöht. The gradual pressure reduction in the heating register promotes post-evaporation and thus increases the anergy share.

§08883/0451§08883 / 0451

Blatt - fr'- Sheet - fr'-

Die Erhöhung der Strömungsgeschwindigkeit des Dampfes in den Heizregistern (bedingt durch den stufenweisen Dampfdruckabbau in den Registern) bringt eine Erhöhung der Reynold 'sehen Zahl.Nachdem diese Zahl für die Berechnung des Wärmeübergangswertes mitbestimmend ist,bedeutet dieser Tatbestand eine Erhöhung des Wärmeüberganges und somit eine Verminderung des Anergie-Antelies.The increase in the flow rate of the steam in the heating registers (due to the gradual Vapor pressure reduction in the registers) brings about an increase in the Reynolds' see number. After this number is used for the calculation the heat transfer value is co-determining, this fact means an increase in the heat transfer and thus a reduction in the anergy antelies.

«09883/0455«09883/0455

LeerseiteBlank page

Claims (3)

Blatt -Sheet - Patentansprüche; 2731345 Claims; 2731345 Lufterhitzer für Dampfbeheizung mit glatten oder berippten Rohren (rund oder oval) dadurch gekannzeichnet,daß in einer Baueinheit (a),Stege im Dampf-und Kondensatdom (b,c) eingebaut sind,die eine Dampfüberströmung über eine oder mehrere Rohrregisterreihen (d) in eine niedrige Dampfdruckstufe bewirken.Diese Reihenfolge kann sioh öfters wiederholen.Die Dampfdruokabstufung erfolgt entgegen der Luftstromrichtung. Air heater for steam heating with smooth or ribbed pipes (round or oval) It is shown that in a structural unit (a), webs are built into the steam and condensate dome (b, c) are that allow steam to flow over one or more rows of pipe registers (d) into a This sequence can be repeated several times takes place against the direction of the air flow. 2.) Lufterhitzer nach Anspruch 1«) dadurch gekennzeichnet, daß jede Druckstufe (f,g) eine getrennte Kondensatabführung im jeweiligen Druckstufen-Kondensatdom (h,i) hat.2.) Air heater according to claim 1 «) characterized in that that each pressure stage (f, g) has a separate condensate drain in the respective pressure stage condensate dome (h, i) has. 3.) Lufterhitzer nach Anspruch 1.) und 2.) dadurch gekennzeichnet,daß dieser als eine Einheit gebaut ist und die Verbindung zu den einzelnen Druckabstufungen durch Heizelemente (Registern) ohne separate Rohranschlüsse erfolgt.3.) air heater according to claim 1.) and 2.) thereby characterized in that this is built as a unit and the connection to the individual pressure levels by means of heating elements (registers) without separate pipe connections. •09883/046S• 09883 / 046S
DE19772731345 1977-07-12 1977-07-12 Steam heated multistage air heating flow arrangement - has pressure stages with partitions for steam overflow and condensate drains Pending DE2731345A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772731345 DE2731345A1 (en) 1977-07-12 1977-07-12 Steam heated multistage air heating flow arrangement - has pressure stages with partitions for steam overflow and condensate drains

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772731345 DE2731345A1 (en) 1977-07-12 1977-07-12 Steam heated multistage air heating flow arrangement - has pressure stages with partitions for steam overflow and condensate drains

Publications (1)

Publication Number Publication Date
DE2731345A1 true DE2731345A1 (en) 1979-01-18

Family

ID=6013692

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772731345 Pending DE2731345A1 (en) 1977-07-12 1977-07-12 Steam heated multistage air heating flow arrangement - has pressure stages with partitions for steam overflow and condensate drains

Country Status (1)

Country Link
DE (1) DE2731345A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8805401U1 (en) * 1988-04-23 1988-06-16 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Heat exchanger for a heating and/or air conditioning system of a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8805401U1 (en) * 1988-04-23 1988-06-16 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Heat exchanger for a heating and/or air conditioning system of a vehicle

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