GB2501919A - Flue heat exchanger - Google Patents
Flue heat exchanger Download PDFInfo
- Publication number
- GB2501919A GB2501919A GB1208250.9A GB201208250A GB2501919A GB 2501919 A GB2501919 A GB 2501919A GB 201208250 A GB201208250 A GB 201208250A GB 2501919 A GB2501919 A GB 2501919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- heat
- water
- water jacket
- flue
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
- F23J13/02—Linings; Jackets; Casings
- F23J13/025—Linings; Jackets; Casings composed of concentric elements, e.g. double walled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A flue heat exchanger comprises a jacket for recovering heat from flue exhaust gases. Hot gases enter a central tube A from an appliance, such as a multi-fuel or wood burning appliance, and travel upwards. The gases are compressed under a compression cap I, and after compression, the gases travel into an exhaust channel C. The gases exit from the channel through an opening D once heat transfer has occurred. Heat is absorbed into a water jacket E from the exhaust channel and the central tube. Cold water enters the water jacket at an inlet F and hot water exits the water jacket at an outlet G. The water jacket may be formed from two tubular stainless steel walls with a narrow gap between them through which a thin film of water flows, simultaneously receiving exposure to heat at both sides. In use, cold water in the water jacket is designed to be subject to heat transfer from both the inner central tube carrying hot flue exhaust gases from the appliance, and also from the outer exhaust channel carrying flue exhaust gases redirected by the compression cap. Preferably, the compression cap is removable and comprises a heat resistant plug.
Description
The HEAT HARVESTER -Micro Jacket Heat Exchanger
Description
Multi fuel and wood burning appliances produce hot waste gases during the burning of fuel. These gases leave such appliances via a flue section connected to the appliance for the safe and proper disposal of these hot waste gases.
The Heat Harvester heat exchanger is designed to transfer and convert hot and wasted flu temperature from the flue system into usable hot water for further useful heat extraction and distribution.
The combination of three basic Heat Harvester design ideas in working relationship with each other allow the non-impeded transfer/conversion of hot waste gas temperature into a unique water jacket within the device. In this way ordinary cold water may be rapidly and continually heated for hot water extraction and use.
The Heat Harvester exchanger has been developed to upgrade and improve the usual or standard method of hot water heating available for solid fuel appliances [wood burning stoves/multi-fuel stoves] those being water tanks within the burning chambers of these products. Conventional methods of heating water with solid fuel appliances incorporate water tanks within the actual fuel burning chamber of the stove. This usual method of water heating impacts negatively on the effectiveness of these appliances to burn fuel effeciciently due to the cold water in these tanks lowering the temperature of the burning process within the fuel chambers. Lower temperatures within the chamber of the appliances equaling poor burning of fuel, decreased fuel efficiency and higher waste percentages of fuel gases escaping into the environment in exhaust pollution.
Three combining design principles produce exceptional performance, by comparison to other methods of water heating, via conventional boiler tanks and water heating boilers used internally. In addition to this useful method of heat conversion external to the appliance the Heat Harvester exchanger utilizes and extracts the normally lost heat escaping within the chimney/flue system to form a useful method of hot water heating via this extraction of an otherwise wasted heat source.
The Heat Harvester exchanger incorporates 3 principles in relationship to produce effective heat exchange A micro water jacket, an exhaust jacket and a gas compression device which combined together allow cold water in the water jacket to be subject to heat transfer from both the inside passage of exiting hot gas and from the outside passage of re-distributed hot gas before finally leaving the apparatus via a conventional flue device [chimney]. The gas compression device in this scenario raises the temperature of the exiting gases within the device and prevents the gases moving too quickly in and out of the exchanger so that more heat from these gases may be retained during the transfer cycle of operation.
The compression cap acts as a buffer zone to the rising and exiting flue temperatures and a flow speed restrictor of the waste gasses. The compression cap ensures that the rapid vertically moving gasses are compressed before they are allowed to exit into the jacket area of the device. The compression of these gases also allow for further combustion of otherwise lost fuel components within the gases. The escape area allowed for the exit of gas under the cap area to the exhaust jacket is a crucial dimension, a calculated amount, and is relevant and important to the overall performance of the device. The dimension area of the water jacket depth, that being the narrow passageway the water must travel through during its exposure to heat is also a crucial dimension for the performance of the device.
Hot gasses enter tube from appliance and travel upwards Gasses are compressed under compression cap © After compression gasses travel into exhaust jacket Gases exit from flue once heat transfer has occurred Heat is absorbed into water channel from jacket C and center tube A Cold water enters Hot water exits Crucial dimensions for efficient operation -water jacket thickness and compression cap clearance Removable compression cap with heat resistant plug
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1208250.9A GB2501919A (en) | 2012-05-10 | 2012-05-10 | Flue heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1208250.9A GB2501919A (en) | 2012-05-10 | 2012-05-10 | Flue heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201208250D0 GB201208250D0 (en) | 2012-06-20 |
| GB2501919A true GB2501919A (en) | 2013-11-13 |
Family
ID=46396853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1208250.9A Withdrawn GB2501919A (en) | 2012-05-10 | 2012-05-10 | Flue heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2501919A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301669A (en) * | 1969-12-10 | 1973-01-04 | ||
| FR2300984A1 (en) * | 1975-02-14 | 1976-09-10 | Goavec Jean Jacques | Heat exchanger attached to double walled chimney - has spiral water tubes with water heated in counter flow to hot gases |
| DE2615833A1 (en) * | 1976-04-10 | 1977-10-20 | Gefi Ges F Industriewaerme Mbh | RECUPERATOR |
| DE2912986A1 (en) * | 1978-04-07 | 1979-10-11 | Rupert Ing Krispler | Furnace exhaust heat recovery system - uses double wall jacket with condensate removal channels forming heat transfer flow passage |
| GB2116299A (en) * | 1982-01-27 | 1983-09-21 | John Barry Jackson | A water heating system |
| US4406402A (en) * | 1981-04-28 | 1983-09-27 | Joseph Henriques | Flue heat recovery system |
| DE3401528A1 (en) * | 1984-01-18 | 1985-07-25 | Ingenieurbüro G. Pawlowski, 6520 Worms | Chimney/flue convector |
-
2012
- 2012-05-10 GB GB1208250.9A patent/GB2501919A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301669A (en) * | 1969-12-10 | 1973-01-04 | ||
| FR2300984A1 (en) * | 1975-02-14 | 1976-09-10 | Goavec Jean Jacques | Heat exchanger attached to double walled chimney - has spiral water tubes with water heated in counter flow to hot gases |
| DE2615833A1 (en) * | 1976-04-10 | 1977-10-20 | Gefi Ges F Industriewaerme Mbh | RECUPERATOR |
| DE2912986A1 (en) * | 1978-04-07 | 1979-10-11 | Rupert Ing Krispler | Furnace exhaust heat recovery system - uses double wall jacket with condensate removal channels forming heat transfer flow passage |
| US4406402A (en) * | 1981-04-28 | 1983-09-27 | Joseph Henriques | Flue heat recovery system |
| GB2116299A (en) * | 1982-01-27 | 1983-09-21 | John Barry Jackson | A water heating system |
| DE3401528A1 (en) * | 1984-01-18 | 1985-07-25 | Ingenieurbüro G. Pawlowski, 6520 Worms | Chimney/flue convector |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201208250D0 (en) | 2012-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |