Showing papers on "Gas heater published in 1989"

Water and air heating system

Abstract: A heating system in which water is heated by means of a gas heater or the like in which the heated water can be used for washing and the like or for making hot drinks such as coffee and the like, and in which the heated water can also be used to heat air in a heat exchanger to provide heated air for space heating.

Method and device for treating exhaust gas of boiler

Abstract: PURPOSE: To save the space for treatment and reduce cost by reducing the concentration of dusts by a dry type electrostatic precipitator after cooling the exhaust gas from a boiler which burns coal by an air preheater and heat recovery device, and further reducing the level of SOx by leading the exhaust gas to a desulphurizing device. CONSTITUTION: The exhaust gas from a boiler 1 which burns coal goes, after passing through an air preheater 2, into the heat recovery section 3a of a gas heater of non-leak type or heat-medium type at temperature of 120-160°C to be cooled to temperature of 80-110°C, and then the exhaust gas is deprived of its dusts to below 100mg/Nm 3 by a dry type electrostatic precipitator. After this it is deprived of its dusts by a desulphrizer 5 by lime and plaster method, and at the same time its SOx is reduced to a specified concentration, and, in the state in which it is cooled to its saturation temperature its temperature is raised by a reheating section 3b of a gas heater of non-leak type and it is led to a chimney. COPYRIGHT: (C)1991,JPO&Japio

Apparatus for purifying objects

Abstract: The present invention relates to apparatus for cleaning workpieces using a solvent in a treatment chamber 14 with simultaneous recovery of the solvents comprising a flushing gas cycle, including the treatment chamber 14, a condenser 6, 7, 8 for removing the solvent contained in the flushing gas stream, an adsorber 3 filled with a molecular sieve and a gas heater 13, wherein the adsorber 3 in relation to the direction of flow of the flushing gas in the adsorption phase is disposed downstream of the condenser 6, 7, 8 and upstream of the gas heater 13.

Numerical modeling of a radio frequency plasma in argon

Abstract: An axisymmetric, two-dimensional mathematical model of a radio frequency gas heater is described and compared with experimental data. The model includes mass, axial momentum, radial momentum, and energy conservation equations along with Maxwell's equation for the circumferential component of the electric vector potential. Buoyancy along the heater axis and radial Lorentz forces are included in the momentum equations. Ohmic heating and radiation losses are included in the energy equation. The radiation loss terms are divided into an optically thin component that leaves the gas directly and an optically thick component that is modeled as a conduction term. Results from the model agree reasonably well with data obtained from a laboratory-sca le gas heater using a bluff body to stabilize the plasma. Calculated results at increased mass flow and pressure are shown to indicate the model's capability in designing larger scale heaters. Nomenclature

Method for controlling regeneration of multilayer adsorber beds

Abstract: The method relates to the control of the regeneration of multilayer adsorber beds in which the first layer serves for water adsorption. Thermal sensors are arranged for this purpose along the packing, with the aid of which sensors the advance of the water loading front, which is expressed as a temperature jump, is detected and monitored in adsorption. To prevent water loading of subsequent layers, the regeneration is initiated when the water adsorption layer is loaded by passing a heated flushing gas over it. The temperature profile developing in regeneration is likewise monitored. The process can be operated under microprocessor control, the cycle times of the adsorbers and/or the flushing gas heater being controlled in dependence on the water input during adsorption.

Gas heater with temperature sensor

Abstract: PURPOSE: To simplify operation of a gas heater and to make its use convenient by controlling heating power of a burner so that boiling point is maintained when boiling point is detected by means of a temperature sensor and upper limit temperature is maintained when boiling point is not detected. CONSTITUTION: When water is present in a vessel 3, the water boils at a temperature of T 1 , while the temperature of the bottom of the vessel is established corresponding to the boiling point. A control unit 6 detects boiling point and when boiling point is detected, heating power is decreased to maintain the boiling point by controlling a proportional valve 2. As evaporation of the water in the vessel 3 progresses and amount of the water decreases, the temperature T of the bottom of the vessel becomes higher than the boiling point. When the temperature T becomes higher than the boiling point by predetermined temperature of ▵T, solenoid valve 9 is closed to extinguish fire. COPYRIGHT: (C)1991,JPO&Japio

Gas burner for warming

Abstract: The utility model relates to a gas heater for warming. The combustion of the inflammable gas is used to achieve the purpose of warming indoors. The gas heater for warming comprises a gas burner with an ignition device and an extinction safety device, a combustion chamber, a smoke exhaust pipeline, and an outer shell. Additionally, the heat is transferred mainly in a convection mode, and the warming effect is favorable. When the utility model is used in the room of which windows and doors are closed, the phenomenon of the oxygen deficiency or the carbon monoxide poisoning can be avoided; consequently, the gas heater for warming has convenient and safe use.

Preheating device for oxidization catalyst combustion type gas heater

Abstract: PURPOSE:To provide a safe preheating unit, facilitate its handling and enable it to be used for multi-purpose both at indoor and outdoor areas by a method wherein preheating flame and igniting means and preheating flame diminishing means are provided near a mixing pipe in a gas heating unit provided with an oxidization catalyst plate for fuel gas at an upper part of a combustion chamber. CONSTITUTION:An extremity end of a mixing pipe 3 is provided with a preheating flame igniting means 6. A bottom surface of the combustion chamber 4 is made such that it has a deep depth at an inserting side of an air mixing pipe 3, the depth is shallow as it approaches an opposite side and a central depth is made shallow in particular so as to expand in a rightward or a leftward direction. Even if an oxidization combustion surface 11 is inclined, an approximate uniform combustion surface can be attained. A temperature sensor 20 is arranged within the combustion chamber 4, an extremity end sensing part 21 is abutted against a bottom surface of the oxidization catalyst plate 5, and a safety device is arranged to make a rapid closing of a gas valve in reference to a difference in temperature in respect to a main sensing part 22. A flame port opening or closing plate 12 biased by a bimetal plate 19 at an open end port of porous pipe 18 of a mixing pipe 3 is made close to it under a normal temperature. As a preheating flame is ignited, a temperature of the bimetal 19 is increased, an open end port of the porous pipe 18 is fully opened to eliminate the preheating flame and then only mixture is continued to be supplied.

Production of hydrogen from hydrogen sulfide

Abstract: PURPOSE:To reduce cost of equipment and improve economic efficiency, by subjecting raw gas containing H2S to combustion reaction in reactive combustion furnace, sulfur removing process, contact catalysis process, water separating process and H2S separating process CONSTITUTION:Raw gas 51 containing >=80wt% H2S heated by a raw gas heater 2 and oxygen enriched air 53 containing >=80wt% oxygen are fed into a reactive combustion furnace 4 and subjected to combustion reaction Resultant reacted gas is cooled to below 700 degC within 03sec in a exhaust heat boiler 5 and most of element sulfur is separated in a sulfur condenser 6 to recover liquid sulfur 54 Next, generated gas in the separating process is heated by a heater 7 and reacted in a catalytic reactor 8 to obtain H2S Next, condensed water is separated through a cooler 9, a water cooling tower 10 to obtain crude H2 gas 56 Next, the gas 56 is fed to an absorbing tower 13 and introduced to a H2 recovering equipment 27 through gas pool 23, compressor 24, cooler 25 and drain separating drum 26 and then treated to purify thus hydrogen 59 is recovered

Metal parts for gas heater, preparation thereof and gas heater

Abstract: PURPOSE: To enhance heat resistance, corrosion resistance, antistaining properties and scratch resistance and to impart an excellent fine view by forming a ceramics layer to the metal part constituting a gas heater by a sol-gel method CONSTITUTION: A ceramic layer is formed on the constitutional material of the metal part for a gas heater by a sol-gel method The ceramics layer due to the sol-gel method can be usually formed by applying the liquid composition of raw materials for forming the ceramics layer to polymerize and gel the same The liquid composition contains various metal alkoxides or metal hydroxides as the raw materials for forming the ceramics layer The concn of the raw materials for forming the ceramics layer in the liquid composition is usually set to about 10-100wt% and appropriately determined corresponding to the properties of the raw materials to be used Further, a colloidal substance and/or an inorg fine powder can be added to the liquid composition of the raw materials for forming the ceramics layer if necessary By the addition of the colloidal substance and/or the inorg powder, the ceramics layer formed by the sol-gel method is made more dense COPYRIGHT: (C)1990,JPO&Japio

Far infrared radiator composed of mosaic natural mixed condensed rock containing tuff, limestone, basalt and andesite

Abstract: PURPOSE:To utilize far infrared rays generated through heating for a drier, a heater, etc., by manufacturing a far infrared radiation molded form by cutting and boring natural mixed condensed rocks forming a mosaic pattern. CONSTITUTION:Mosaic rock having radiation properties is cut out in proper size by a diamond wire cutter, the rock is cut by a diamond wheel cutter, the rook is cross-cut while being carried to a chain conveyor, and bored by a diamond drill, a circular pipe 2 is manufactured, and a circular pipe 2', to a side surface of which bored holes 1 are bored, is prepared as required. Heaters 4, 4' are fit ted into the internal hollow section of the mosaic circular pipe 2, fitted by fitting pipes 5, 5' and mounted onto the front of a support box plate 6, air is fed to the center of the wall surface of a rear-section circular mirror surface 7, a fan 8 is joined and a far infrared ray heater is manufactured, and hot air is blasted. A porous cylinder 2' is supported and engaged with the inside of an outer pipe net 10 by support copper 11, and loaded on a porous pipe base 12 and screwed. A gas combustion apparatus 13 is fitted at the center of the inside of the porous pipe base 12, and a valve 15 for adjusting a gas is screwed to a conduit 14, thus manufactur ing a gas heater 9.

Combined cycle power generation plant for coal gasification

Abstract: PURPOSE:To improve the responsiveness on sharp variation of load by arranging a buffer tank which supplies the internal air into a gas furnace on the sharp variation of load and stores the compressed air on the sharp reduction of load, between an air compressor and the gas furnace which uses the compressed air as oxidizing agent. CONSTITUTION:In the titled plant, the raw gas generated in a gas furnace 1 into which air is supplied from a value 2, steam is supplied from a value 3, and coal is supplied from a valve 4 is purified in a gas cooler 5 and a desulfurizer 6, and supplied into a combustor 9 in a gas turbine equipment through a gas heater 7. The compressed air pressurized in an air compressor 25 is supplied into the valve 2 (air flow rate adjusting valve) through a conduit 26. In this case, a buffer tank 28 is connected to the conduit 26 so as to bypass the gas through a check valve 27 and an air flow rate adjustor 2. The air in the buffer tank 28 is supplied into the gas furnace 1 on the sharp increase of the load of the plant, and the compressed air is stored on the sharp reduction of the load.

Hot water supply gas heater

Abstract: PURPOSE:To cancel a noise from an exhaust air port and reduce the noise sharply, by installing to the upper part of an exhaust air port a pressure application device which discharge a noise in opposite phase to a noise discharged from said exhaust air port. CONSTITUTION:A pressure receiving device 8 which receives the pressure fluctuation in a combustion chamber is installed to a wall surface of the combustion chamber. Signals transmitted from the pressure receiving device are converted into opposite phase by a phase converter 7 and transmitted to a pressure application device 9 installed to the upper part of a blowout port. The pressure receiving device 8 converts pressure fluctuations into electrical signals while the pressure application device 9 converts electrical signals into the pressure fluctuations of sound. Specific attention must be given to a transmission characteristic H1 which covers the transmission of the pressure fluctuations in the combustion chamber to an exhaust air port so as to turn the sound pressure of the pressure application device into opposite phase. In addition to that, they must be discharged from the pressure application device by including the characteristic H2 of the phase converter and the pressure application device. Therefore, the characteristic of the phase converter H3 is set based on the following equation H3=-H1/H2. Therefore, the noise generated by combustion is canceled by an unavoidable noise discharged from an exhaust air port of a hot water supply gas heater and a false noise discharged by the pressure application device in opposite phase, thereby reducing the noise sharply.

Monitoring and controlling system for gas heater

Abstract: PURPOSE:To control a gas heater in accordance with a room temperature by the operation of a correcting switch even in case the temperature detected by a room thermostat has an error against the actual room temperature due to the disturbance, etc, by adding a correcting switch to each room to control the level of the temperature detected by the room thermostat CONSTITUTION:If a room thermostat 4 which functions to always the room temperature at a prescribed level is attached at an inadequate place, the detected temperature has an error against the actual room temperature Thus a gas heater 2 may sometimes be miscontrolled In this respect, a correcting switch 12 is added to each room to control the level of the temperature detected by the thermostat 4 Thus said detected temperature can be artificially corrected toward the actual room temperature by means of the switch 12 In such a way, the room temperature is properly detected and the heater 2 is properly controlled even in case the thermostat 4 is unable to detect the correct room temperature due to the disturbance, etc

Portable gas heaters

Abstract: not available for EP0198969Abstract of corresponding document: US4512328A portable gas heater particularly useful for heating foodstuffs under all-weather conditions comprises a housing having a first section defining a gas burner compartment, and a second section defining a gas container compartment, the latter section including a pair of side walls hingedly mounted to a closed position closing the container compartment, or to an open position opening the container compartment and providing a stable support for the gas heater. The gas burner further includes a burner plate connected to the gas burner nozzle by means of a plurality of telescoping tubes to enable the burner plate to be positioned either at the lower end or the upper end of the gas burner compartment for accommodating different types of vessels.