ITBG20130035A1 - HEAT RECOVERY - Google Patents
HEAT RECOVERYInfo
- Publication number
- ITBG20130035A1 ITBG20130035A1 IT000035A ITBG20130035A ITBG20130035A1 IT BG20130035 A1 ITBG20130035 A1 IT BG20130035A1 IT 000035 A IT000035 A IT 000035A IT BG20130035 A ITBG20130035 A IT BG20130035A IT BG20130035 A1 ITBG20130035 A1 IT BG20130035A1
- Authority
- IT
- Italy
- Prior art keywords
- helical element
- heat generator
- heat recovery
- recovery unit
- heat
- Prior art date
Links
- 238000011084 recovery Methods 0.000 title claims description 28
- 239000000567 combustion gas Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 239000002028 Biomass Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000003517 fume Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000000779 smoke Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/06—Flue or fire tubes; Accessories therefor, e.g. fire-tube inserts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
- F23M9/003—Baffles or deflectors for air or combustion products; Flame shields in flue gas ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
- F23M9/08—Helical or twisted baffles or deflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0026—Guiding means in combustion gas channels
-
- 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
-
- 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
- F28D21/0007—Water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Developing Agents For Electrophotography (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Power Steering Mechanism (AREA)
Description
“Recuperatore di calore“ "Heat recovery"
DESCRIZIONE DESCRIPTION
La presente invenzione si riferisce ad un recuperatore di calore da applicare alla caldaia di un generatore di calore alimentato a biomassa caratterizzato da un tiraggio naturale senza alcun tipo di estrazione meccanica sia essa a supporto o parte necessaria a garantire i l tiraggio. In particolare ad un recuperatore di calore del t ipo anche denominato turbolatore. Tale turbolatore è applicato a generatori di calore. The present invention refers to a heat recovery unit to be applied to the boiler of a biomass-fed heat generator characterized by a natural draft without any type of mechanical extraction, either as a support or part necessary to guarantee the draft. In particular to a type heat recovery unit also called turbulator. This turbulator is applied to heat generators.
Un turbolatore è un disposit ivo che converte un flusso gassoso laminare assiale in un flusso rotatorio aumentando in tal modo i l percorso dello stesso usabile per diverse applicazioni come ad esempio come scambiatore di calore. A turbulator is a device that converts an axial laminar gaseous flow into a rotary flow thus increasing its path usable for different applications such as for example as a heat exchanger.
I turbolatori sono normalmente elementi aggiuntivi da inserire nei corpi caldaia. Turbulators are normally additional elements to be inserted in the boiler bodies.
La loro presenza rallenta i l flusso dei fumi e ne aumenta la quantità di calore trasferito. Their presence slows down the flue gas flow and increases the amount of heat transferred.
Uti l izzato nei generatori di calore aumenta i l rendimento riducendo i consumi e le conseguenti emissioni inquinanti in atmosfera. Used in heat generators, it increases efficiency by reducing consumption and consequent polluting emissions into the atmosphere.
Sono noti turbolatori realizzati con barre piatte rettilinee metalliche attorcigliate su se stesse in modo che la barra sia ruotata attorno al proprio asse. Turbulators are known made with flat rectilinear metal bars twisted on themselves so that the bar is rotated around its own axis.
Esistono anche turbolatori realizzati con tondini o tubi metallici disposti a formare una spirale continua. There are also turbulators made with metal rods or tubes arranged to form a continuous spiral.
Scopo della presente invenzione è quello di provvedere ad un recuperatore di calore ed ad un generatore id calore comprendente un recuperatore di calore in grado di aumentare l’efficienza del generatore di calore avvalendosi del solo tiraggio naturale. The purpose of the present invention is to provide a heat recovery unit and a heat generator comprising a heat recovery unit capable of increasing the efficiency of the heat generator using only natural draft.
Altro scopo è quello di provvedere ad un recuperatore di calore di facile applicazione al generatore di calore. Another purpose is to provide a heat recovery unit which is easy to apply to the heat generator.
Ulteriore scopo è quello di provvedere ad un recuperatore di calore di facile realizzazione. A further object is to provide a heat recovery unit which is easy to make.
In accordo con la presente invenzione, tali scopi ed altri ancora vengono raggiunti da un recuperatore di calore in accordo alla rivendicazione 1. In accordance with the present invention, these objects and others besides are achieved by a heat recovery unit in accordance with claim 1.
Tali scopi vengono anche raggiunti da un generatore di calore comprendente un recuperatore di calore in accordo ad una delle rivendicazioni al legate. These objects are also achieved by a heat generator comprising a heat recovery unit according to one of the attached claims.
Ulteriori caratteristiche dell ’ invenzione sono descritte nelle rivendicazioni dipendenti. Further features of the invention are described in the dependent claims.
I vantaggi di questa soluzione rispetto alle soluzioni dell ’arte nota sono diversi. The advantages of this solution compared to the solutions of the known art are different.
Aumentando il tempo di contatto tra i fumi e f luido, ossia allungando il percorso fatto dai fumi mediante la rotazione rispetto al percorso rettilineo, si incrementa il trasferimento dell ’energia termica. By increasing the contact time between the fumes and the fluid, ie by lengthening the path made by the fumes by rotating with respect to the straight path, the transfer of thermal energy is increased.
Il recuperatore di calore è stato ottimizzato al fine di garantire un elevato scambio termico dei fumi di combustione e nello stesso tempo minimizzando le perdite di carico. The heat recovery unit has been optimized in order to guarantee a high heat exchange of the combustion fumes and at the same time minimizing the pressure losses.
Il recuperatore è caratterizzato da un asse centrale di diametro variabile in funzione del diametro di evacuazione fumi su cui sono fissati due componenti elicoidali intercalati anch’essi di diametro variabile che permettono di incanalare i fumi in modo tale da massimizzare il recupero del calore dai gas di combustione. The recuperator is characterized by a central axis of variable diameter according to the flue gas evacuation diameter on which two intercalated helical components are fixed, also of variable diameter, which allow the flue gas to be channeled in such a way as to maximize the recovery of heat from the flue gases. combustion.
Il recuperatore è inoltre è dotato di un supporto fatto a gancio che facilità l ’ installazione del pezzo nel prodotto in quanto basta un asta posta sul diametro del tubo di evacuazione fumi per consentirne il fissaggio rendendo in tal modo agevoli tutte le operazioni di montaggio e smontaggio per le operazioni di pulizia del componente. The recovery unit is also equipped with a hook support that facilitates the installation of the piece in the product as a rod placed on the diameter of the smoke evacuation pipe is enough to allow it to be fixed, thus making all assembly and disassembly operations easy. for component cleaning operations.
Le caratteristiche ed i vantaggi della presente invenzione risulteranno evidenti dalla seguente descrizione dettagliata di una sua forma di realizzazione pratica, illustrata a titolo di esempio non limitativo negli uniti disegni, nei quali: The characteristics and advantages of the present invention will become evident from the following detailed description of a practical embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, in which:
la figura 1 mostra un generatore di calore in sezione comprensivo di un recuperatore di calore, in accordo alla presente invenzione; Figure 1 shows a sectional heat generator including a heat recovery unit, according to the present invention;
la figura 2 mostra un recuperatore di calore, visto in prospettiva, in accordo alla presente invenzione; figure 2 shows a heat recovery unit, seen in perspective, according to the present invention;
la figura 3 mostra un recuperatore di calore, visto di fronte, in accordo alla presente invenzione; Figure 3 shows a heat recovery unit, seen from the front, according to the present invention;
la figura 4 mostra un recuperatore di calore, visto dall ’alto, in accordo alla presente invenzione. Figure 4 shows a heat recovery unit, seen from above, in accordance with the present invention.
Riferendosi alle figure allegate, un generatore di calore, in accordo alla presente invenzione, comprende una camera di combustione 10 che termina con un tubo 11 per l ’uscita dei gas di combustione, al quale si collega un camino 12. Referring to the attached figures, a heat generator, according to the present invention, comprises a combustion chamber 10 which ends with a pipe 11 for the exit of the combustion gases, to which a chimney 12 is connected.
Con generatore di calore si intende una stufa o un termocaminetto alimentato a biomassa caratterizzato da un tiraggio naturale senza alcun tipo di estrazione meccanica sia essa a supporto o parte necessaria a garantire i l tiraggio. By heat generator we mean a biomass-fueled stove or fireplace characterized by a natural draft without any type of mechanical extraction, be it a support or part necessary to guarantee the draft.
A fianco del tubo 11 per l ’uscita dei gas di combustione sono presenti noti mezzi 13 per il recupero del calore dai gas di combustione del generatore di calore. Beside the pipe 11 for the exit of the combustion gases there are known means 13 for the recovery of heat from the combustion gases of the heat generator.
All ’ interno del tubo 11 si inserisce un recuperatore di calore 20, in accordo alla presente invenzione. Inside the tube 11 a heat recovery unit 20 is inserted, in accordance with the present invention.
Il recuperatore di calore 20 comprende una barra centrale 21, di diametro variabile in funzione del diametro del tubo 11 di evacuazione fumi. La barra centrale 21 è realizzata mediante un tubo metall ico. The heat recovery unit 20 comprises a central bar 21, of variable diameter according to the diameter of the smoke evacuation pipe 11. The central bar 21 is made by means of a metal tube.
La barra centrale 21 è realizzata con un tubo chiuso da almeno un lato. The central bar 21 is made with a tube closed on at least one side.
Sulla barra centrale 21 sono fissati due componenti 22 e 23 elicoidali intercalati, anch’essi di diametro variabile che permettono di incanalare i fumi in modo tale da massimizzare il recupero del calore dai gas di combustione. Two intercalated helical components 22 and 23 are fixed on the central bar 21, also of variable diameter that allow the fumes to be channeled in such a way as to maximize the recovery of heat from the combustion gases.
I l diametro del recuperatore di calore 20 è leggermente inferiore al diametro del tubo 11 in modo che le operazioni di inserimento e di estrazione dello stesso avvengano con facil ità. The diameter of the heat recovery unit 20 is slightly smaller than the diameter of the tube 11 so that its insertion and extraction operations take place easily.
I due componenti 22 e 23 elicoidali sono fissati sulla barra 21 in modo che i bordi trasversali inizial i 30 e 31 sono opposti rispetto alla barra 21 ed allineati tra loro. The two helical components 22 and 23 are fixed on the bar 21 so that the initial transverse edges 30 and 31 are opposite with respect to the bar 21 and aligned with each other.
Si fissa il componente 22 e quando i l suo bordo iniziale (bordo di attacco) questo ha effettuato un giro di 180° attorno alla barra 21, si fissa il componente 23, in modo che i due bordi di attacco siano all ineati lungo la stessa direzione. Component 22 is fixed and when its leading edge (leading edge) it has made a 180 ° turn around bar 21, component 23 is fixed so that the two leading edges are aligned along the same direction .
I due componenti elicoidali 22 e 23 sono di forma e dimensioni identici tra loro, realizzati mediante una piastra metallica piegata a forma di elica ed avente uno spazio centrale ( lungo l ’asse del componente elicoidale) libero, dove verrà inserita la barra 21. The two helical components 22 and 23 are of identical shape and size, made by means of a metal plate bent in the shape of a helix and having a free central space (along the axis of the helical component), where the bar 21 will be inserted.
Il recuperatore di calore 20 ha quindi una forma che può essere ad esempio paragonata ad una vite di Archimede. The heat recovery unit 20 therefore has a shape which can be compared, for example, to an Archimedes screw.
Utilizzando due componenti elicoidali 22 e 23 è possibile ottenere un passo tra le eliche molto inferiore di quello ottenibile con un sono componente. By using two helical components 22 and 23 it is possible to obtain a pitch between the helices much lower than that obtainable with a single component.
Alla sommità della barra 21 è posto un gancio 35 aperto che facilità l ’ installazione del pezzo nel prodotto in quanto basta un asta 14 posta sul diametro interno (trasversalmente) del tubo di evacuazione fumi 11 per consentirne il fissaggio rendendo in tal modo agevoli tutte le operazioni di montaggio e smontaggio per le operazioni di pulizia dello stesso. At the top of the bar 21 there is an open hook 35 which facilitates the installation of the piece in the product as a rod 14 placed on the internal diameter (transversely) of the smoke evacuation pipe 11 is sufficient to allow it to be fixed, thus making all operations easier. assembly and disassembly operations for cleaning operations.
La dimensione del recuperatore di calore 20 può variare in funzione del tipo di caldaia e del caminetto, Anche il passo dell’elica può variare in funzione delle dimensioni della camera, della potenza nominale e della densità dei fumi. The size of the heat recovery unit 20 may vary depending on the type of boiler and fireplace. The propeller pitch may also vary depending on the size of the chamber, the rated power and the density of the fumes.
La scelta di tali dimensioni consentono una stabilizzazione della depressione della camera di combustione ottimizzando la velocità di efflusso dei fumi ottimizzando tutte le fasi della combustione. The choice of these dimensions allows a stabilization of the depression of the combustion chamber by optimizing the flue gas outflow speed by optimizing all the combustion phases.
In un esempio di realizzazione, con un tubo 11 avente diametro 160 mm, i l recuperatore di calore 20 ha un diametro complessivo di 150 mm, la barra centrale 21 ha un diametro di 48 mm, il passo dell’elica è di 50 mm, ed è lungo 350 mm. In an example of embodiment, with a pipe 11 having a diameter of 160 mm, the heat recovery unit 20 has an overall diameter of 150 mm, the central bar 21 has a diameter of 48 mm, the pitch of the propeller is 50 mm, and it is 350 mm long.
I material i utilizzati, nonché le dimensioni, potranno essere qualsiasi a seconda delle esigenze e dello stato della tecnica. The materials used, as well as the dimensions, may be any according to the needs and the state of the art.
Il recuperatore di calore così concepito è suscettibi le di numerose modifiche e varianti, tutte rientranti nell ’ambito del concetto inventivo; inoltre tutt i i dettagli sono sostituibili da elementi tecnicamente equivalenti. The heat recovery unit thus conceived is susceptible of numerous modifications and variations, all falling within the scope of the inventive concept; furthermore, all the details can be replaced by technically equivalent elements.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000035A ITBG20130035A1 (en) | 2013-11-06 | 2013-11-06 | HEAT RECOVERY |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000035A ITBG20130035A1 (en) | 2013-11-06 | 2013-11-06 | HEAT RECOVERY |
Publications (1)
Publication Number | Publication Date |
---|---|
ITBG20130035A1 true ITBG20130035A1 (en) | 2015-05-07 |
Family
ID=49683806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000035A ITBG20130035A1 (en) | 2013-11-06 | 2013-11-06 | HEAT RECOVERY |
Country Status (1)
Country | Link |
---|---|
IT (1) | ITBG20130035A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191215574A (en) * | 1912-07-03 | 1913-07-03 | Robert Allen | Improvements in Surface Apparatus for the Transfer of Heat. |
FR531299A (en) * | 1919-10-21 | 1922-01-10 | Vaporizer for combustion engines | |
CA1116031A (en) * | 1978-10-31 | 1982-01-12 | Frederic J. Allan | Heat transfer baffle for water heater |
US5497824A (en) * | 1990-01-18 | 1996-03-12 | Rouf; Mohammad A. | Method of improved heat transfer |
GB2447952A (en) * | 2007-03-29 | 2008-10-01 | Alley Enterprises Ltd | Solid fuel boiler |
US20120292000A1 (en) * | 2011-05-16 | 2012-11-22 | Johnson Controls Technology Company | Turbulators for heat exchanger tubes |
-
2013
- 2013-11-06 IT IT000035A patent/ITBG20130035A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191215574A (en) * | 1912-07-03 | 1913-07-03 | Robert Allen | Improvements in Surface Apparatus for the Transfer of Heat. |
FR531299A (en) * | 1919-10-21 | 1922-01-10 | Vaporizer for combustion engines | |
CA1116031A (en) * | 1978-10-31 | 1982-01-12 | Frederic J. Allan | Heat transfer baffle for water heater |
US5497824A (en) * | 1990-01-18 | 1996-03-12 | Rouf; Mohammad A. | Method of improved heat transfer |
GB2447952A (en) * | 2007-03-29 | 2008-10-01 | Alley Enterprises Ltd | Solid fuel boiler |
US20120292000A1 (en) * | 2011-05-16 | 2012-11-22 | Johnson Controls Technology Company | Turbulators for heat exchanger tubes |
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