Electric heating device
FIELD: domestic facilities.
SUBSTANCE: invention relates to combined heat and power supply plant for household use. Proposed domestic combined heat and power plant contains Stirling engine and water heater. Stirling engine is installed for heating by first burner supplied with fuel gas. Plant contains additionally intake gas duct passing from Stirling engine in contact with fuel gas intake in first burner preliminary heating of fuel gas delivered into first burner and then heating of water which is subsequently heated by water heater. Water heater is provided with second burner. Plant is designed so that outlet gas and gas from second burner form combined flow immediately after heating of water, and combined flow for heating of water is located higher from outlet gas relative to flow. Plant contains additionally cooler of Stirling engine arranged for heating water higher than outlet gas relative to direction of flow.
EFFECT: provision of effective heating of water, reduced cost of heating and provision of compact device.
2 cl, 4 dwg
The present invention relates to a heating electrostrictive. In particular, the invention relates to a domestic combined heat and power plant ((DCHP)(reporting).
Have been proposed such BEAUTE-installation, which include the Stirling engine connected to an AC generator to generate electricity. The heat generated by the Stirling engine, which in other cases shall be discharged, is used for heating water supply domestic hot water and Central heating system, and therefore becomes a valuable product BEAUTE-installation. It was shown that the most favorable economic indicators for BEAUTE-install achieved when the Stirling engine/alternator set size to generate approximately 1 kW of electricity. At this level, however, will be achieved only approximately 5 kW of heat, which is significantly lower than normal domestic heat load in excess of 20 kW.
In order to make the rest of warmth, so BEAUTE-set to compete effectively with modern technical characteristics household steam boiler, an additional gas burner. The present invention aims to provide a thermally efficient operation of the Stirling engine and the additional the additional burner.
According to the present invention provides for domestic combined heat and power plant, containing the Stirling engine and the heater, in which the Stirling engine is used for heating the first burner fueled by a combustible gas, and the installation further comprises an exhaust gas duct passing from the Stirling engine in contact with the intake of combustible gas to the first burner with pre-heating of fuel gas supplied to the first burner, and then hot water, which is additionally heated by the heater, where the water heater is equipped with a second burner, and where the plant is designed so that the exiting gas and the gas from the second burner to form the combined stream immediately after they give heat the water, and the combined stream is placed to heat the water upstream from the outgoing gas.
Thus, the heat from the original release is regenerated in a member of burner air / gas mixture that has the effect of reducing combustible fuel and increase the temperature of combustion, which increases the rate of heat transfer to the Stirling engine and therefore improves the efficiency of the installation. Specified escaping gas, now cooled to some extent, is then used to heat water, which is heated by the additional heater, so when IgA the supply of heat, required from the additional heater.
Moreover, the water will get warm relatively low grades from the combined stream, as components of the combined stream is already given part of the heat water. Water then will then get the warmth of a relatively high grade directly from the output gas from the additional burner. This design is thermally efficient.
Preferably, the installation further comprises a cooler Stirling engine designed to heat water upstream from the heat leaving gas. This not only serves to provide water heating, but also helps to maintain the desired temperature difference in the Stirling engine.
Gases of the burner, the heating head part of the Stirling engine, are usually at a temperature of about 1400°C. Because the gases go around the head part, the heat is transferred to the head of the heater, and the temperature of the gases drops to approximately 800°C. Gases transfer heat to the incoming fuel-air mixture. If there is no additional heat recovery, exhaust gases going into the tube Stirling engine, then usually have a temperature of about 600°C.
The present invention also relates to a new design of the heating device to transfer heat to water. The requirements is that it dollars is but to be compact and capable of transferring heat from, at least two threads to the water with maximum efficiency.
According to another aspect of the present invention provides a heating device for heating a fluid medium, and the device comprises: a housing; a pipe in the casing to its outer periphery and spiral wrapped around the Central axis of the housing for transporting the fluid from the first end of the housing to the second end of the housing; an additional burner in the housing adjacent to the second end and is surrounded by a pipe to transfer heat to the fluid in the first part of the pipeline; the release of hot gas from an external source of heat, and the inlet is made with the configuration for directing hot gas radially outward to the second part of the pipeline closer to the first end of the housing than the first part of the pipeline.
Such a device is particularly compact, as an extra burner and the inlet for gas from an external source are in the pipeline through which the transported fluid. In addition, an extra burner and the inlet is placed to transfer heat to different parts of the spiral pipe. Thus, the device can be made to be very thermally efficient.
Preferably the inlet is located with the opportunity essentially, predotvraschenie gas from the secondary burner and hot gas from an external source of heat, at least, until both pass through the spiral wound pipe. Thus, flows essentially prevented from mixing to achieve a pipeline with a more efficient heat transfer.
As soon as the exiting gas and the hot gas from an external source to pass through the spiral wound tubing, they can be then simply reset either separately or as a combined stream. However, preferably two streams to form a combined stream immediately after they first give some of the heat pipe, and the combined stream passes around the third part of the pipeline closer to the first end than the second part of the pipeline. Thus, the cold fluid in a spiral wound pipe, which enters the first end of the housing, first faced with the specified relatively cold joint flow and preheated data stream to heat the gas from an external source of heat and gas from the secondary burner.
Although some mixing of gas from the secondary burner and hot gas from the external heat source is valid, because a small amount of the mixture has a relatively small impact on the overall heating of the fluid medium, it is preferable to minimize such confusion as much as possible. So suppose the equipment provides sealing to prevent the mixing of gas from the secondary burner and hot gas from an external source of heat radially inside of the pipeline.
In order to maximize heat transfer to the pipeline, the pipeline is preferably set so that each stage of the pipeline is flat in the direction of the Central axis, so that in the cross section of its radial dimension is greater than its axial dimension. Also preferably adjacent coils of pipe are located closely adjacent or against each other. This ensures that the hot gas passes through a relatively long and narrow passage between adjacent coils of the pipeline, which makes effective heat transfer. This pipeline design is specified in WO 94/16272.
An example of the invention is now described with reference to the accompanying drawings, on which:
figure 1 presents the scheme of the first installation with the Stirling engine;
figure 2 presents the scheme of the second unit with Stirling engine;
figure 3 presents the cross-section of the heating device; and
4 shows end view of the device with 3.
The device shown in figure 1, contains the Stirling engine 1, to which heat is supplied by the burner 14. Heat is transferred to the head part by a system of ribs 3, as considered in the early concurrently pending application authors No. 0020012, and out through the flue.
The device in figure 1 has a heater 15, which is designed to heat water p the current 16 with additional burners 17. Escaping gases are removed through the flue 18.
A common gas supply line 19 is provided for the first burner 14 and the secondary burner 17. Specified gas flow is regulated by one multifunctional valve 20. Burner regulates adjustable ignition and flame detection burner can be entered in the multifunction controller. The gas in the multifunctional valve 20 enters the mixing chamber in the form of a Venturi 21 and is mixed with the air stream 22 which is supplied by a fan.
The mixture of gas and air is now fed to the control valve 23, in which a single inlet 24 leads to the release of the first burner 25 and the release of the second burner 26. The relative amount of flow to each release is regulated by a hinged valve 27, which rotates around the axis 28. The position of the hinged valve 27 is set by the controller installation and is provided at a specified position, for example, a servo motor. Alternative air flow can be divided only after the suction fan 60 such valve 23, and then each of the air flow can be entered in the multifunction valve/controller with accurate dosage of the gas mixture for each burner. This design is shown in figure 2.
The air-fuel mixture supplied to the Stirling engine 1 flows around the fairing 29, closing the burner, and therefore heats the hot gas stream leaving the burner. Escaping gas, which gave part of its heat to the incoming mixture, out of the fairing through the pipe 30 and flows into the heater 15, where it comes into contact with the water flow 16 (which has already been heated to some extent in the cooler Stirling engine 31) so as to pre-heat water flow 16 upstream from the secondary burner 17. Additional burner 17 is lit for additional heating of the water stream 16, if required. Escaping gas from the first burner 14 out of the heater 15 with the output gas from the supplementary burner 17 through the duct 18.
The heating device shown in more detail in figure 3 and 4 and contains an additional burner 17 and the heater 15. The heater 15 has a generally cylindrical body 39 with the main axis 40. Additional burner 17 is located on the axis 40 so that the flame moves radially outward.
Water is fed through the heater 15 on the right side (figure 3) to the left side of the water supply 41, which is a single spiral pipe (which can be made from a number of connected segments), is wound around the axis 40, to the outer periphery of the cylindrical body 39. Every single stage of the pipeline 41 is flat in the axial is upravlenii. Adjacent coils are close to each other, but not welded together, so that the hot gas can pass between adjacent coils. By the middle of the water heater 15 departs inlet 42 on the exit gas from the Stirling engine. The inlet leads into a round chamber 43 formed between the circular plates 44, 45, the latter of which is a hole for the inlet 42. Ring pendants 46 overlap the gap between the edge of the plates 44, 45 and water supply 41 to ensure that all outgoing gas from the chamber 43 passes through the coils of water 41. With respect to the second end of the camera 43 is Luggage additional burners 47, in which there is an additional burner 17. Additional burner heats the adjacent coils with the second end.
With respect to the first end from the camera 43 is unloading chamber 48 with the release of 49. There is also the issue of 50 for condensate obtained due to the nature of the high efficiency of this end-stage heat recovery.
The work of the heater 15 is as follows. Water flows through the water pipe 41 from the first end to the second end around the spiral passage. Additional burner 17 is lit in the chamber 47, and the escaping gas is fed to the input 42 and passes into the chamber 43. These two hot flow passing radially through the gaps between adjacent coils in the water 41 in the outer ring of the second camera 51 and form a combined stream. This combined stream then flows back through the water 41 adjacent to the first end, as indicated by the arrow 52. The incoming water so first heated specified combined stream. As it flows to the second end, she meets the exit gas of the Stirling engine from the chamber 43 and additionally heated. Finally, she meets the hot gas from the secondary burner 17 to provide a third stage of heating.
The specified three-stage heating device ensures efficient water heating. In addition, as can be seen in figure 2, the device, which provides a specified three-stage heating, is particularly compact, which saves cost and space.
1. Domestic combined heat and power plant, containing the Stirling engine and the heater, in which the Stirling engine is to heat up the first burner fueled by a combustible gas, and the installation further comprises an exhaust gas duct passing from the Stirling engine in contact with the inlet of the fuel gas to the first burner for preheating the fuel gas supplied to the first burner, and then heat water, which is then heated by the heater, where the water heater is provided with a second burner and where the installation is designed, Thu the escaping gas and the gas from the second burner to form the combined stream immediately after as they give up their heat to the water, and the combined stream to heat water is located upstream from the outgoing gas.
2. Installation according to claim 1, additionally containing cooler Stirling engine located for heating the water upstream from the heat coming out of the gas.
FIELD: chemical industry; reactors used for treatment of the viscous medium or to realization of the chemical reactions such as polymerization.
SUBSTANCE: the invention is pertaining to the reactor, which is used for treatment of the viscous medium or for realization of the chemical reactions such as polymerization. The reactor contains the tank and the circuit for circulation of the heat-carrying agent in the form of the fluid medium. At that the circuit contains at least one segment of the tube torque along the spiral-shaped guide. The circuit also contains the second segment of the tube torque along the spiral-shaped guide and arranged in parallel to the first segment between the distributor and the collector. The first and second segments are oriented concerning the same geometrical axis, mainly with the same radius of bending and are inserted one into other in such a manner that together they form essentially a cylindrical bunch. The circuit may have the second bunch formed, at least, with the help of one segment of the tube torque along the spiral-shaped guide arranged between the distributor and the collector and centered concerning the axis. At that the second bunch has essentially the cylindrical form with the radius smaller than the radius of the first bunch. The method includes the phase of alternation of the spiral-shaped segments of the tube, so that to form the essentially cylindrical bunch. The invention allows to increase efficiency of the heat feeding into the reaction medium.
EFFECT: the invention ensures the increased efficiency of the heat feeding into the reaction medium.
18 cl, 7 dwg
FIELD: power engineering, chemical industry.
SUBSTANCE: invention is designed for generation of steam. Proposed steam generator has cylindrical housing, coil and coaxial insert. Longitudinal ring channels between housing and coil and between insert and coil differ in section, first one exceeding section one, and are formed to provide maximum intensification of heat exchange, and insert is made sectional. Pitch of coil turns is made minimum possible to guarantee clearance between adjacent turns. Surfaces of housing and insert forming longitudinal ring channels can be made profiled. Housing of steam generator can be thermally insulated.
EFFECT: increased efficiency of heat exchange.
5 cl, 2 dwg
FIELD: heat-exchanging equipment, particularly for machine-tool, chemical, power and other industries to cool process medium.
SUBSTANCE: heat-exchanger comprises cylindrical body with flat closures and removable radiator made as two coaxially arranged coils. Coil ends are fastened to orifices formed in flat closures through boss-like tube plates. Heat-exchanger also has inlet and outlet pipes adapted to supply and discharge working medium. The body is divided into two cavities by partition having central orifice. Installed in the orifice is tube transmitting liquid to be cooled from one cavity into another one and extending along heat-exchanger axis. Coils are arranged in different cavities in opposition one to another. Tube plates of each coil are installed in orifices of one closure. Orifices for inlet and outlet pipes are formed in different cavities near the partition. Cooling medium supply to coils and discharge from the coils in both cavities is carried out trough T-branches installed on tube plates of one of the closures and through kneepieces connected to tube plates of another closure.
EFFECT: increased efficiency of heat removal.
FIELD: equipment for gas cooling and moisture condensing, particularly for atomic power plants.
SUBSTANCE: apparatus comprises shell and coiled tube arranged inside the shell. The shell includes three sections, wherein coiled tube is secured inside middle section. Middle section has oppositely located inlet and outlet pipes for medium circulating in tubes. Coiled tube is formed as straight horizontal tubes with adjacent ends connected through U-shaped branches arranged in removable end sections of the shell, wherein the branches are turned one relative another so that three-dimensional coiled tube mound around vertical axis in formed. The inlet and outlet pipes are arranged in end shell sections, wherein mounting planes thereof are parallel to longitudinal shell axis.
EFFECT: improved accessibility of check points and reduced time of heat-exchanger putting of operation.
3 cl, 3 dwg
FIELD: boiler installation technology.
SUBSTANCE: boiler installation has boiler provided with burners, hot-water heater, heat exchangers passing through boiler and hot water heater, economizer and heat exchanger with heat exchanger passing it through. All the units of boiler installation are fixed at the same platform. Case of hot-water heater has several shells; cavities among shells are intended for filling with air and feed water. Cavity intended for filling with feed water is included into feed water circuit between feed water pump and economizer. Cavity intended for filling with air is connected with burners and blower. Heat exchanger disposed inside boiler is made in form of spiral envelopes disposed coaxially. Each envelope is formed by heat-exchange tubes connected with feeding and receiving boards. Envelopes having smaller diameters are shifted to combustion chamber made in form of two sequentially disposed cavities. Heat-exchange tubes of heat exchanger are made to have two sections. Tubes of the first section are made to touch tubes from the second section. Tubes of the second section are put in spiral envelopes to form gaps between surfaces of envelopes.
EFFECT: reduced size and weight of boiler installation, steam boiler and heat exchanger.
18 cl, 13 dwg
FIELD: household appliances.
SUBSTANCE: invention relates to domestic combination heating-and-power device. Heating electric device, particularly, domestic combination heating and power system, contains two burners 3, 17. Dividing valve 23 divides air flow 24 into two flows, one per burner. Fuel is mixed with air. Regulator controls fuel and position of dividing valve, thus regulating amount of air supplied to each burner.
EFFECT: increased efficiency, provision of effective and economic heating-and-power device.
7 cl, 4 dwg
FIELD: heat supply system.
SUBSTANCE: water boiler comprises housing made of two walls, furnace with a solid arch, door, ash grate, afterburning device, gas duct chambers formed by heat exchanging areas, and chimney. The gas duct chambers has shutters. The arch of the furnace is provided with the housing of the afterburning device provided with frames made of grids and three rows of openings made in the passage for supplying secondary air and ejector that passes through the gas duct chambers and heat exchanging areas and connecting the arch of the furnace with the chimney and having a bimetallic thermostat.
EFFECT: simplified servicing and enhanced efficiency.
3 cl, 1 dwg
FIELD: heat power engineering.
SUBSTANCE: water boiler comprises overflow tank, pump, and heat exchangers provided with casing, mounted outside of the boiler housing, and connected with the steam-generating member through the pipeline. The steam-generating member is set in the furnace chamber. The inner space of the overflow tank is connected with the inner space of the casing of the heat-exchanging condenser through the pipeline. The sucking branch pipe of the pump is connected with the inner space of the overflow tank. The pressure branch pipe of the pump is connected with the steam-generating member.
EFFECT: enhanced efficiency.
2 cl, 2 dwg
FIELD: the invention is assigned for heating liquid and may be used for heating or/and sanitary usage.
SUBSTANCE: the heat exchanger is connected with a cylinder furnace having two parallel heat-exchanging elements. Each of these heat-exchanging elements consists of a tube or a group of tubes forming a spiral bobbin in which the wall of the tube (tubes) is manufactured out of material with good thermal conductivity and has a flattened and oval transversal section with the main axis perpendicular or approximately perpendicular to the axis of the spiral. The width on the interval separating the two adjusting turns is constant and smaller than the thickness of the transversal section. The heat-exchanging elements are firmly installed inside the gas- proof shell. The shell encircles two heat-exchanging elements of tubes, located at a distance from each of them. The heat exchanger is fulfilled so that hot gases producing in the furnace pass radially or approximately radially at first through the heat-exchanging element and than through the secondary heat-exchanging element. The diameter of the furnace is smaller then the diameter of the primary heat-exchanging element, The furnace is installed coaxially inside the primary heat-exchanging element. The length of the secondary heat-exchanging element is less then the length of the primary heat-exchanging element for forming free space opposite the end section of the primary heat-exchanging element in continuation of more short the secondary heat-exchanging element. A chamber connected with the inner space of the secondary heat-exchanging element is located in the space.
EFFECT: increases compactness of the heat-exchanger and reduces its weight.
15 cl, 10 dwg
FIELD: the invention is assigned for heat exchanging and may be used for heating and hot water supply.
SUBSTANCE: the condensation heat exchanger is fulfilled with a burner and has at least one tubular element consisting of one tube or of the group of tubes located from one end to another end forming a spiral winding, moreover the wall of the tube or of the tubes is manufactured of material of high thermal conductivity and has a flattened oval transversal section whose large axis is perpendicular or approximately perpendicular to the axis (X-X') of the spiral winding. The width of the gap separating two neighboring turns is constant and less then the thickness of the transversal section. The tubular element is installed motionlessly inside the gas-proof body. In the heat exchanger hot gases pass in radial or approximately radial direction through the tubular element. The body is fulfilled of thermal resistant plastic and has means for mechanical fixation of the tubular element in its main axial sector, moreover the means are fulfilled with possibility of amortization of axial efforts, caused with inner pressure of circulating in it liquid urging to deform its walls preventing transfer of these loads on the body.
EFFECT: reduces weight and cost price of the arrangement.
19 cl, 16 dwg
FIELD: the invention refers to the field of energy particularly to heating of premises.
SUBSTANCE: the task of the invention is creation of an adaptive system of adjustment of consumption of heat-carrying agent interconnecting the temperature of the heat-carrying agent with the speed of its displacement in the thermal circuit. The mode of adjustment of consumption of warmth in the thermal circuit using water in quality of the main heat-carrying agent, includes measurement of difference of pressures and change of consumption of heat-carrying agent, by way of introduction of an intermediate heat-carrying agent which is also water heated with the aid of a heating element and creation of difference of pressure between the cavities with the main and the immediate heat-carrying agents, moreover the main heat-carrying agent is heated with the intermediate, at that the specific weight of the main heat-carrying agent in the zone of the intermediate heat-carrying agent is reduced and it is divided on flows whose number fluctuates from 4 to 16. In quality of the intermediate heat-carrying agent solution of salt in water is used. For preparation of the intermediate heat-carrying agent boiled again water is used. The power consumed by the heating element is reduced on reaching pressure over the intermediate heat-carrying agent of one prescribed value and the heating element is switched off on reaching pressure over the main heat-carrying agent of another (larger) prescribed value. The proposed mode is realized in the arrangement including an electrical water heater having a body with removable lids, located in the cavity of the body filled with the intermediate heat-carrying agent, a heating element, sockets for feeding and discharging of the heated main heat-carrying agent connected to the distributors of the flow to which in the volume of the intermediate heat-carrying agent the tubes with the main heat-carrying agent are joined, pressure sensors fulfilled in the shape of membranes covering from the end faces the air chambers of the adjusting unit connected with the cavities filled with the intermediate and the main heat-carrying agents, moreover the air chambers of the adjusting unit are divided with a membrane creating difference of pressures. One of the air chambers of the adjusting unit and the cavity of the main heat-carrying agent are divided with a membrane whose effort balances the weight of the water lift over the electrical heater. The air chamber divided with a membrane from the cavity of the main heat-carrying agent is provided with a mechanism of changing volume holding traction, a screw and a nut. The mechanism of changing volume may be fulfilled in the shape of a siphon, a membrane or in the shape of a cylinder with a piston.
EFFECT: creates adaptive system of adjustment of consumption of a heat-carrying agent.
2 cl, 2 dwg
FIELD: the invention is assigned for cleaning air from combustion products and may be used in water heaters and heating apparatus.
SUBSTANCE: the boiler has a rectangular cupboard with heating protection and a jacket in which there a fire-chamber with a burner, a heat exchanger and an outlet socket of combustion products through an exterior wall of the premises on which there is a hermetically installed cassette with absorbing substance. The outlet socket has a cone-shaped nozzle with curvilinear planes and guide twisting ribs. The cone-shaped nozzle is fulfilled out of a bimetal, at that the material of the bimetal has from the side of the curvilinear planes a coefficient of thermal conductivity prevailing in 2,0-2,3 times higher the meaning of the coefficient of thermal conductivity of the material from the side of environment.
EFFECT: the invention provides maintaining of normalized parameters of the work of the gas heating boiler during prolong operation at availability of an impact on the cone-shaped nozzle as of positive so as of negative temperatures of the environment.
FIELD: the invention is assigned for heating water and may be used in heating engineering.
SUBSTANCE: the boiler has a convection zone divided on two packets located to the right and to the left of fire-chamber and furnace cocks. In the firm frame of the boiler there are fastened the upper and the lower guides into which all screens and sections of convection packets are inserted from the front part whose inlet and outlet sockets are putted out on the front wall of the boiler and are connected between themselves with tubular passages on the flanges, because of that dismantling of all surfaces of heating for repair and replacement is possible.
EFFECT: the invention provides increase of repair capability of boilers.
FIELD: heat power engineering.
SUBSTANCE: electrode water heater comprises pressure-tight housing that receives at least one electrode pair composed of phase and piping electrodes with insulator and terminal, and branch pipes for supplying and discharging the heat-transfer agent. The heat-transfer agent activator is mounted on the surface of the phase electrode and is made of a flexible material, e.g. rubber, and is shaped into a flexible ring mounted on the phase electrode throughout the length of the working zone of the electrodes and secured from the bottom of the phase electrode in the groove made in the insulator. From above, the activator is set in the groove made in the top section of the phase electrode thus forming two branches shaped into a spiral and arranged over the outer side of the phase electrode.
EFFECT: enhanced efficiency.
5 cl, 1 dwg
FIELD: heat power engineering.
SUBSTANCE: electrode water heater comprises pressure-tight housing, phase electrode mounted in the piping electrode, and branch pipes for supplying and discharging heat-transfer agent.
EFFECT: enhanced efficiency and reliability.
4 cl, 1 dwg
FIELD: heat power engineering.
SUBSTANCE: heat exchanger comprises conical housing provided with branch pipes for supplying and discharging heating fluid and fluid to be heated. The wall of the housing is provided with the passage L-shaped in cross-section and made of a conical spiral. The inner side of the housing is formed by two belt surfaces shaped into conical spirals whose generatrices are parallel to the generatrices of two adjacent heat exchanging spiral surfaces belonging to the L-shaped passage. The heat exchanger is additionally provided with the inner section that is mounted coaxially to the housing and made of finned hollow twisting core shaped into overturned truncated cone, branch pipe for supplying fluid to be heated into its space, and shaped branch pipe that is in communication with the L-shaped passage of the outer heat exchanging section through fittings. The shaped branch pipe is provided with inner spiral fining. The outer spiral fining of the core and shaped branch pipe is made to mate the screw surfaces of the inner shape of the conical housing. The core of the inner section bears on the impeller-shaped structure provided with the impeller load-bearing members whose ends are secured to the walls of the branch pipe for supplying heating fluid to the heat exchanger.
EFFECT: enhanced efficiency.
1 cl, 2 dwg