AU2008273062A1 - Method for heating liquid heat carrier and a device for carrying out said method - Google Patents
Method for heating liquid heat carrier and a device for carrying out said method Download PDFInfo
- Publication number
- AU2008273062A1 AU2008273062A1 AU2008273062A AU2008273062A AU2008273062A1 AU 2008273062 A1 AU2008273062 A1 AU 2008273062A1 AU 2008273062 A AU2008273062 A AU 2008273062A AU 2008273062 A AU2008273062 A AU 2008273062A AU 2008273062 A1 AU2008273062 A1 AU 2008273062A1
- Authority
- AU
- Australia
- Prior art keywords
- heat carrier
- heater
- pipes
- heating
- heat
- 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.)
- Abandoned
Links
Classifications
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/225—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating electrical central heating boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/282—Methods of steam generation characterised by form of heating method in boilers heated electrically with water or steam circulating in tubes or ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B27/00—Instantaneous or flash steam boilers
- F22B27/04—Instantaneous or flash steam boilers built-up from water tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Description
Method for heating liquid heat carrier and a device for carrying out said method Field of the invention 5 The invention relates to heat power engineering, and more particularly to hot steam generation for industrial and individual needs, as well to construction of heating systems. 10 Discussion of prior art A method of evaporation of liquid in the channel by means of heating it over the steam saturation point is known (see U.S. Patent No. 3326640, issued in 1967). The disadvantages of the method described therein are a lack of reliability and high 15 materials consumption caused by the need to increase liquid pressure. A method of evaporation of liquid by heating it in a channel above the steam saturation point, decreasing the pressure in the liquid and maintaining the temperature of the channel walls below the limit of superheat of the evaporated liquid is known, where the heat output of the channel increases by means of imposing current collecting 20 electric potential on the channel walls (see Russian Patent No. 2128804, published on April 10, 1999). The disadvantage of this method is inefficiency of the evaporation process and complexity of commercial application. A method of steam generation is known (see Russian Patent No. 2293913, published on February 20, 2007) where a boiler is filled with water up to a required 25 level, and electric voltage is applied to the water by means of electrodes positioned in the water. The electric voltage is applied to the water by using high voltage pulses, and water jets that appear upon electric voltage application are dispersed structure by flowing water jets through a splitter, which is a system that hinders water jets. The efficiency of heat output from the heater to the heat carrier in said method is also low. 30 A method of steam generation described in SU 419687, published on March 15, 1974, is known. An operating environment heated up to the temperature lower than its saturation point under current pressure is supplied to an inlet chamber, where the 2 environment is then swirled. At the starting point, the speed of the environment increases and the pressure decreases. The environment moving towards a diaphragm the swirl range decreases in speed, and the environment pressure becomes equal to saturation pressure at this temperature. Steam bubbles affected by buoyancy forces 5 collect in the center and are delivered to a consumer. The disadvantage of this method is also a lack of efficiency of heat transfer from the heater to the heat carrier. A direct-flow water heater, described in SU 663982, published on May 25, 1979 is known, which contains a body with a central combustor enclosed in a water jacket and a peripheral ring-shaped catalyst chamber. The disadvantage of such water heater 10 is poor distribution of gases coming out of the catalyst chamber and low efficiency of the device. A direct-flow surface water heater, described in SU 787812, published on December 20, 1980 is known, which contains a body, a burner device connected to the combustor, which is enclosed in a water jacket with a ring-shaped catalyst chamber 15 located around the water jacket and connected to the combustor with its bottom side, and to a pipe for discharge of exhaust gases with its foreside, by means of a ring-shaped demister above which a ring-shaped diaphragm with valves is arranged. This device also has an inefficient transfer from the heater to the heat carrier. A method of liquid heat carrier heating and a device for carrying out this method 20 are known (see Russian Patent No. 2178125, published on January 10, 2002). The liquid heat carrier heating method described therein consists of supplying a liquid heat carrier to a heating area in a heating device body from a heat source, heating the heat carrier and discharging the heated heat carrier from the heating area. The liquid heat carrier is supplied from above to the heating area on the spinning shell ring, thus 25 forming a thin-film liquid sheet of the heat carrier. The heated heat carrier is then discharged on the underside of the spinning shell ring, and in the body of a heating device hot exhaust products are organized to force the flow around the shell ring from the heat source, on the inside and outside surfaces of the shell ring with the combustion products being drawn off of the body of a heating device. 30 In this method and a device for carrying out the method, the spinning of a shell ring causes forming of condensed flow of liquid heat carrier on the walls of the shell ring, and the direct heating is made by means of infrared radiation and hot fuel 3 combustion products from the heat source, while the rate of interior pressure in the heat carrier, which is effected by centrifugal force is chosen depending on the rate of the ring shell spin, so as to ensure the heating and the discharge of the heat carrier with a temperature above its boiling point under air pressure. The disadvantage of this 5 method and the device for carrying out the method is low efficiency of heat transfer from the heater to the heat carrier. Hence, there is a need to develop new methods for heating liquid heat carriers and devices for carrying out these methods with a high efficiency heat transfer from a heater to a heat carrier. 10 Disclosure of embodiments of the invention The objective of this invention is to create a method to increase the efficiency of heat transfer from a heater to a heat carrier, to increase the reliability of the device for 15 carrying out this method, to simplify its design and at the same time to increase its productive capacity. Other achieved objectives and advantages of this invention will be shown below when briefly describing the drawings figures in preferred embodiments. The method of heating a liquid heat carrier includes supplying a liquid heat carrier to a heating area in a heating device body from a heat source, heating the heat 20 carrier and discharging the heated heat carrier from the heating area. In order to increase the efficiency of heat transfer from the heater to the heat carrier the supplying of a liquid heat carrier to the heating area is made by means of turning it about a cylindrical surface of the heater, thus forming an axially symmetric swirl flow, the trajectory of each heat carrier particle being tangent to the surface of the heater whose temperature is 25 higher than the critical temperature of the heat carrier. Heating the heat carrier in accordance with claimed invention is done using a double phase transition, which comprises a first transition from liquid to steam and a second transition from steam to liquid, i.e. evaporation and condensation in one free range of a heated liquid molecule (particle). 30 In order to turn the heat carrier, it is preferentially supplied on the underside of the heating device through at least two pipes tangentially positioned and forming the force couple. The heat source is preferred to be electric heating or natural gas burning.
4 To organize an ascending path of flow it is preferred to observe the formula: (m, T, )/sec 5 (m, T,)/sec, where m, is the heat carrier weight; T, is the heat carrier temperature; 5 m, is the heater weight; T, is the heater temperature. The objective is fulfilled by means of a heating device that switches a heater with a heating source, a heat exchanger with pipes for supplying the cold heat carrier and for discharging the hot heat carrier. The heater having a cylindrical surface is 10 coaxially arranged in the heat exchanger that has a cylindrical body, in order to supply the heat carrier on the underside of the body at least two pipes are arranged tangentially positioned to form an axially symmetric swirl flow, and at the top of the cylindrical body a discharge of the hot heat carrier is arranged. The heating device preferably includes an expansion tank, binding pipes and a 15 heat exchanger. For supplying the hot heat carrier it is preferred to arrange at least two pipes at the top of the cylindrical body. In the described method, the temperature of the heater surface is higher than the critical thermal point of the heat carrier. The heater surface that has a temperature over the critical thermal point of the heat carrier (water) is immediately surrounded by a 20 steam sheet (steam jacket), and heat transfer slows down considerably. In case of using water as a heat carrier, the critical thermal point of water is 374,15 0 C. Keeping in mind the high speed of steam molecules free range (up to -500 m/sec) and extremely short free range, this method suggests to organize the heat carrier flow in such a way as to make liquid water molecules turn to steam when touching the cylindrical surface of the heater, 25 and having their motion path immediately changed, joining the organized flow of liquid heat carrier (water). The energy of vaporization is given up to the heat carrier during condensation (double phase transition), and the following molecules of the liquid heat carrier (water) and of the resulting (water) steam may follow the organized trajectory of flow. 30 The heating device has high efficiency of heat transfer from the heater to the heat carrier by means of double phase transition: water-steam-water (specific heat of water is 4,19 J/g*K at 20 0 C, specific heat of evaporation is 2255 J/g).
5 Brief description of the attached drawings Fig. I displays the main view of the heating device; 5 Fig. 2 displays a A-A sectional view of the device of Fig. 1. The heating device includes a heat exchanger having a cylindrical body 1, tangentially positioned pipes for supplying the cold heat carrier 2, and pipes for discharging the hot heat carrier 3. The heater 4 having a cylindrical surface is coaxially arranged in the cylindrical body 1. The heating device includes an expansion tank 5, 10 binding pipes and heat receivers 6. The device can be supplied with an electric power distribution box and an automatic control system 7. The temperature of the heater 4 is controlled by means of thermocouples 8 arranged in the heater 4. An electric heat source (a helical resistive element 9) is located inside the heater 4. The system being filled with the heat carrier the heater 4 is heated over the 15 critical temperature. Due to its physical properties the heated liquid flashes to the expansion tank 5 and the cold heat carrier is supplied to the heating area due to the flow continuity by means of forming an axisymmetric (axially symmetric) swirl flow, the trajectory of each heat carrier particle being tangent to the surface of the heater 4 the temperature of which is higher than the critical thermal point of the heat carrier. An 20 axially symmetric swirl flow arises because the supply of the cold heat carrier is done through at least two tangential pipes, and due to this the heat carrier swirls in the device body. Depending on the power of the installation, more than two tangential pipes for supplying the cold heat carrier may be used or a guiding device may be implemented. Any known device for heat carrier swirling can be used as a guiding device. 25 When touching the surface of the heater, the heat carrier is quickly heated and it evaporates. Once it gets into the swirl flow of the heat carrier, the heat carrier condenses inside the flow, giving up its steam condensing energy to the heater. Once that happens, the heat carrier is heated and the heat carrier flows. The discharge of the hot heat carrier is carried out through the discharge pipes 3 in order to maintain the 30 coaxially organized heat carrier flow in regard to the heater 4. Any known heat source that is used for these purposes can be used for the heater 4. The heating device operates as follows: 6 The heat carrier (water) is poured in the heat exchanger 1 through the expansion tank 5 or a special feed line (not shown in Fig. 1). The temperature of the heater 4 is raised in any known way (using electric heating or fuel combustion heat). The density of the heated heat carrier decreases. The heat carrier having a form of cylinder H around 5 the heater 4 starts rotary motion under condition of the continuity of flow that makes room for supplying the cold water through the tangential pipes 2. The heated heat carrier discharges through the discharge pipes 3 to the receiver 6. In the receivers 6 the heat carrier flow is cooled and the heat carrier returns to the heat carrier supplying pipes 2 of the device. 10 The preferred embodiment The preferred embodiment is shown in Fig. I and Fig. 2. To swirl the heat carrier, it is supplied on the underside of the heating device through the two pipes 2 15 tangentially arranged and forming the force couple. The electric heat can be used as a heat source. The heater also includes an automatic control system 7. To discharge the hot heat carrier, two pipes 3 are arranged at the top of the cylindrical body. To organize an ascending path of flow the following formula is observed: (mT T, )/sec < (m, Tn)/sec, 20 where m, is the heat carrier weight; T, is the heat carrier temperature; mn is the heater weight; Tn is the heater temperature. When using the proposed heating device for room heating, a pump is not needed, 25 because the heater 4 can rise the water temperature up to the critical point (T = 374,15 0 C) and further, up to the heater temperature. Claimed solution results in the increase of efficiency of heat transfer from the heater to the heat carrier, the increase of reliability of the device and the simplification of its construction. 30 Industrial applicability 7 The device described herein can be used in, e.g., heat power engineering and can be used in different liquid heating systems, particularly water heating systems. 5 10 15
Claims (8)
1. A method of heating a liquid heat carrier, the method comprising: 5 supplying the liquid heat carrier to a heating area in a heating device body from a heat source; in the heating area, turning the liquid heat carrier about a cylindrical surface of the heater, thereby forming an axially symmetrical swirl flow, wherein a trajectory of each heat carrier particle is substantially tangential to the 10 cylindrical surface of the heater; maintaining a temperature of the cylindrical surface higher than a critical temperature of the heat carrier; and discharging the heated heat carrier from the heating area.
2. The method of claim 1, wherein the liquid heat carrier is supplied on an 15 underside of the heating device through at least two pipes, the two pipes being tangentially arranged and forming a force couple.
3. The method of claim 1, wherein electrical heating is used as a heat source.
4. The method of claim 1, wherein gas combustion is used as a heat source. 20
5. The method of claim 1, wherein an ascending path of the axially symmetrical swirl observes the following formula: (m, T, )/sec < (mn T,)/sec, where m, is the heat carrier weight; T, is the heat carrier temperature; 25 mn is the heater weight; Tn is the heater temperature.
6. A heating device comprising: a heater with a heat source; a heat exchanger having at least two pipes supplying cold liquid heat carrier; 30 at least one hot liquid heat carrier discharge pipe; the heat exchanger having a cylindrical body with a cylindrical surface coaxially arranged with the heater, the heat exchanger supplying the cold liquid heat carrier on the underside of the cylindrical body through the at least two pipes; 9 the at least two pipes being positioned tangentially to form an axially symmetrical swirl flow, and wherein a discharge of the hot liquid heat carrier is from the top of the cylindrical body. 5
7. The heating device of claim 6, further comprising an expansion tank, binding pipes and a heat receiver.
8. The heating device of claim 6, wherein, at a top of the cylindrical body at least two pipes are arranged for hot liquid heat carrier discharge. 10 15 20
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2007125918/06A RU2353861C1 (en) | 2007-07-09 | 2007-07-09 | Method of heating liquid heat carrier and device to this end |
RU2007125918 | 2007-07-09 | ||
PCT/RU2008/000379 WO2009008768A2 (en) | 2007-07-09 | 2008-06-18 | Method for heating liquid heat carrier and a device for carrying out said method |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2008273062A1 true AU2008273062A1 (en) | 2009-01-15 |
Family
ID=40229299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2008273062A Abandoned AU2008273062A1 (en) | 2007-07-09 | 2008-06-18 | Method for heating liquid heat carrier and a device for carrying out said method |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110059411A1 (en) |
EP (1) | EP2211121A4 (en) |
CN (1) | CN101842642A (en) |
AU (1) | AU2008273062A1 (en) |
EA (1) | EA016933B1 (en) |
RU (1) | RU2353861C1 (en) |
WO (1) | WO2009008768A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201800006794A1 (en) * | 2018-06-29 | 2019-12-29 | Matteo Lentini | Heater \ Radiant steam generator |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1139001A (en) * | 1914-11-18 | 1915-05-11 | Sidney Le Fevre Varvel | Electrical water-heater. |
US3326640A (en) | 1964-03-02 | 1967-06-20 | Commercial Solvents Corp | Flash vaporization of nitric acid |
US3885125A (en) * | 1970-10-05 | 1975-05-20 | Fulton Boiler Works | Method for electrically heating a heat transfer fluid |
US3747670A (en) * | 1970-10-05 | 1973-07-24 | Fulton Boiler Works | Thermal fluid heater |
SU419687A1 (en) | 1972-05-29 | 1974-03-15 | Ю. М. Красильников | STEAM GENERATION METHOD |
SU663982A1 (en) | 1977-06-06 | 1979-05-25 | Центральное Специальное Проектно-Конструкторское Бюро Министерства Легкой Промышленности Украинской Сср | Contact water heater |
SU787812A1 (en) | 1977-10-03 | 1980-12-15 | Научно-Исследовательский Институт Санитарной Техники И Оборудования Зданий И Сооружений | Contact-type surface water preheater |
US4261299A (en) * | 1979-07-18 | 1981-04-14 | Marran John D | Wound boiler |
SE426341C (en) * | 1980-02-14 | 1985-02-06 | Fagersta Ab | KEEP TO PREVENT CORROSION IN A COMBUSTOR COOLER AND CHEMICALS IN COOKING GAS COOLING |
DE3323058A1 (en) * | 1982-09-25 | 1984-03-29 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | ELECTRIC WATER HEATER |
SU1216614A1 (en) * | 1984-03-22 | 1986-03-07 | Goldman Aleksandr M | Heat exchanger |
FR2651869A1 (en) * | 1989-09-14 | 1991-03-15 | Comparon Jean Daniel | ELECTRIC BOILER WITH CYCLONIC TURBULENCE. |
RU2128804C1 (en) | 1997-12-24 | 1999-04-10 | Глухарев Николай Федорович | Process of evaporation of liquid |
CN2355294Y (en) * | 1999-02-10 | 1999-12-22 | 李龙伟 | Pile-up disc style heat exchanger |
RU2178125C1 (en) * | 2001-03-01 | 2002-01-10 | Лихачев Владимир Кузьмич | Method and apparatus for heating liquid heat-transfer agent |
RU2200913C2 (en) * | 2001-05-18 | 2003-03-20 | Акционерное общество открытого типа "Бумагоделательного машиностроения" | Water hating boiler |
UA51321A (en) * | 2002-02-21 | 2002-11-15 | Сергій Олександрович Мартинов | Method for steam generation and stem-generating appliance (versions) |
RU34001U1 (en) * | 2003-07-17 | 2003-11-20 | Иванов Игорь Алексеевич | HEATING INSTALLATION |
CN2769752Y (en) * | 2005-01-21 | 2006-04-05 | 清华大学 | Heat conducting oil heating device |
RU2293913C1 (en) | 2005-07-06 | 2007-02-20 | Институт проблем управления им. В.А. Трапезникова РАН | Method of generating steam and pulse steam generator |
-
2007
- 2007-07-09 RU RU2007125918/06A patent/RU2353861C1/en not_active IP Right Cessation
-
2008
- 2008-06-18 EA EA201000135A patent/EA016933B1/en not_active IP Right Cessation
- 2008-06-18 AU AU2008273062A patent/AU2008273062A1/en not_active Abandoned
- 2008-06-18 US US12/668,042 patent/US20110059411A1/en not_active Abandoned
- 2008-06-18 EP EP08779204A patent/EP2211121A4/en not_active Withdrawn
- 2008-06-18 CN CN200880106223A patent/CN101842642A/en active Pending
- 2008-06-18 WO PCT/RU2008/000379 patent/WO2009008768A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
RU2353861C1 (en) | 2009-04-27 |
WO2009008768A2 (en) | 2009-01-15 |
EP2211121A2 (en) | 2010-07-28 |
RU2007125918A (en) | 2009-01-20 |
US20110059411A1 (en) | 2011-03-10 |
EA201000135A1 (en) | 2010-06-30 |
CN101842642A (en) | 2010-09-22 |
EA016933B1 (en) | 2012-08-30 |
EP2211121A4 (en) | 2011-08-10 |
WO2009008768A3 (en) | 2009-02-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |