I.e. hot blast stove, gas heater
(57) Abstract:Usage: in the battery gas heaters. The inventive heater before the main heat-retaining nozzle 7 is placed an additional nozzle 8. Both nozzles are made of gas-permeable material and is equipped with heating elements 23 and 24. Between the heating elements 23 and 24 are installed partition 25. 1 Il. The invention relates to heat engineering, namely the accumulator gas heaters.Known i.e. hot blast stove, gas heater, comprising a housing with insulation, which contains heat-retaining nozzle and the elements of its heat, designed for periodic heating of portions of the gas due to the heat accumulated in the process of pre-heating of the nozzle.The disadvantage of this heater is the low efficiency of heat transfer due to inadequate surface of the heat removal nozzles, consisting of rods, the minimum diameter of which is limited by strength conditions. The presence of the nozzle, is made up of many connected parts, determines the complexity of the design of the heater.In the known device provided with the most advanced surface heat removal, high volumetric heat transfer coefficient, as well as increased utilization of the internal volume of the heater. Seal the nozzle in the housing at the end of the gas outlet provides the latest in terms of all-round compression that allows you to use the heater for heating the highly compressed gas, for example, in this model the high-pressure pipe. By such use at the outlet of the heater, you must get the hot gas, for which it is desirable to heat the nozzle to temperatures approaching the melting point of the material from which it is made. However, such a mode of operation in a known heater realize it is impossible, as when entering preheated to the maximum possible, for reasons of refractoriness, temperature nozzle gas at room temperature it will collapse under the action of temperature difference. Therefore, a well-known heater operate at lower the melting.The aim of the invention is to increase efficiency by increasing the gas temperature at the outlet of the heater.This objective is achieved in that in the known i.e. hot blast stove gas heater, comprising a housing in the cavity which are insulated, heat-retaining nozzle of the gas-permeable material compacted in the case at the end of the exit gas, and the elements of its heat in the cavity of the body, there is more heat-retaining nozzle of the gas-permeable material compacted in the case at the end of the gas inlet and is equipped with independent elements of its heat, while between elements heat the primary and secondary nozzles installed insulation wall, and the housing cavity on both sides of the septum communicated with each other.Thus, the proposed device complies with the criteria of the invention of "novelty."When the analysis is not detected known technical solutions with similar distinguishing the proposed device of the prototype of the signs. Therefore, the proposed solution meets the criterion of "substantial differences".The drawing shows a diagram of the proposed caperal 2 to enter, and the other channel 3 to output of the working gas. On the inner surface of the housing 1 are elements of a thermal insulation 4, 5, 6. The main 7 and an additional 8 thermal storage nozzles are mounted with a gap between their ends 9, 10 and fixed in the housing 1 using a gas-tight metal cups 11, 12. Nozzles 7, 8 are made of gas-permeable heat-conducting material such as metal. The cups 11, 12 tightly cover the side surfaces of the nozzles 7, 8 and hermetically report output end 13 of the main nozzle 7 and the input end face 14 additional nozzles 8 through the pipes 15, 16 respectively with the output 3 input and 2 channels in the housing 1. This connection is provided by the presence of transient conical sockets 17, 18 between the cylindrical portions of the cups 11, 12 and the nozzles 15, 16, and installation of seals 19, 20 between the pipes 15, 16 and the body of the heater. In the annular cavities 21, 22 between the outer surfaces of the cups 11, 12 with nozzles 7, 8 and the inner surface of the insulation 4 are heating elements 23, 24 with independent adjustment of the input power. Between these cavities 21, 22 mounted heat-insulating partition wall 25, and these cavities communicated between the For ease of installation of the heater casing 1 is made detachable, and sealing parts is carried out with the help of seals 28.In the embodiment, the heating elements 23, 24 can be mounted in the body of the nozzles 7, 8. In addition, can be used for induction nozzles by high frequency currents.I.e. hot blast stove, gas heater works as follows.Without a supply of gas at atmospheric pressure include heating elements 23, 24 and produce thermal storage heating nozzles. The main nozzle 7 is heated to a higher temperature than the additional. After reaching the nozzles 7, 8 preset temperature is made to blow gas through the heater. During a purge gas at room temperature through the channel 2 comes in a caulk tube 16 and through the tapered socket 18 in the end of the 14 additional nozzles 8. Passing through the nozzle 8, the gas is heated to an intermediate temperature, fills the free volume of the heater and enters the end face 9 of the main nozzle 7. Passed through her hot gas is collected in the funnel 17 and out through the compacted pipe 15 and an output channel 3 is supplied to the consumer. During the purge heater will balance the pressures in the cavities 21 and 22 through the free item is the top 25 and enables operation at high gas pressures.The proposed additional heater nozzle 8 can be heated to the same as the nozzle in the prototype, the temperature, the maximum amount which is due to the ability of a material nozzle to withstand thermal shock. Thus for example the heating of the main nozzle 7 to a higher than in the prototype, the temperature, the level of which is limited only by its refractoriness. In the proposed design the destruction of the main nozzle purging does not occur, because at its input end 9 comes already passed through an additional nozzle 8 of the heated gas. Thus, the claimed device without changing the nomenclature used material can increase the temperature of the gas at the outlet of the heater, and therefore, its effectiveness in comparison with the prototype. (56) USSR Author's certificate N 205989, CL F 24 H 7/02, 1965. I.e. hot blast stove, GAS HEATER, comprising a housing with inlet and outlet in the cavity which are insulated, heat-retaining nozzle and the elements of her heated, characterized in that, to improve efficiency by increasing the temperature of the gas, the nozzle is sealed in the housing near the end of the outlet, the cavity housing is equipped with independent elements of its heat, while primary and secondary nozzles are made of gas-permeable material between the heating elements of these nozzles installed insulation wall, and the housing cavity on both sides of the septum communicated with each other.
FIELD: heat engineering, namely accumulator of gas heaters, possibly used for constructing Cowper and ohmic gas heaters for aerodynamic tubes.
SUBSTANCE: heater includes heat accumulating adapter arranged in housing with gas-tight cylindrical outer surface and electric current supply leads of resistive heating member. Heat accumulating member of adapter is zigzag-shaped and it is made of thin strip of sheet material; said member has vertically arranged lamellae mutually spaced by the same distance and placed along axis of heater. Ends of said strip are connected to electric current leads. Annular mutually joined flanges are arranged on ends of adapter. The last has rods arranged between flanges on cylindrical surface; said rods are electrically isolated from flanges and they serve as supports for lamellae of heat accumulating member. Each flange of adapter has three parts (upper ring-half and two lower ring quadrants). There are gaps between parts of rings and casing for providing displacement of ring parts one relative to other and relative to casing by value of length change of lamellae of heat accumulating member at heating and cooling them.
EFFECT: enlarged using range of hot-blast heater due to its simplified design and lowered hydraulic resistance.
FIELD: heat engineering, namely accumulator type gas heaters, possibly used at developing hot blast gas heaters for aerodynamic tubes.
SUBSTANCE: gas heater includes cylindrical heat accumulating adapter sealed in housing near end of gas outlet. Novelty is that heater includes rod arranged along axis of heat accumulating adapter, supporting grid and cylindrical gas-tight casing. Heat accumulating member of adapter is made of thin corrugated strip whose one end is secured to rod. Corrugated strip is twisted around rod in the form of compact coil arranged together with supporting grid in casing. Height of strip corrugation is equal to thickness of strip.
EFFECT: improved design of heater due to its lowered hydraulic resistance.
FIELD: heating systems.
SUBSTANCE: invention refers to heat exchange devices used for heat or cold transfer in the processes using liquid or gas flows, and can be used in heating and ventilation systems, in chemical, food and other industries. Heat exchange method in gaseous and liquid media consists in transfer of heat or warm liquid (gas) from upper layers of medium to lower ones by means of capsules consisting of cover with heat insulation in which there is tank filled with heat-absorbing material or liquid (gas) and flotation chambers with movable partition brought into operation with temperature drive in the form of bi-material. Capsules are retained on bottom till heat transfer is completed owing to magnet or thermomagnetic material installed in capsule, and electric magnet installed in lower layers; at that, current for electric magnet is generated when capsule with magnet passes along current-conducting spiral located along capsule movement.
EFFECT: proposed invention will allow, by using internal heat, performing heat exchange between upper and lower layers of liquid (gas), as well as producing electric power.
5 cl, 8 dwg
FIELD: heating systems.
SUBSTANCE: invention is intended for water heating and can be used in power engineering. Device includes boiler, expansion tank, heat exchanger, hydraulic air heat exchanger, pipelines, including pipeline connecting the upper part of boiler to the bottom of expansion tank, safety valves, capacity and tank. Boiler, tank, expansion tank and pipeline connecting the upper part of boiler to bottom of expansion tank have common longitudinal axis in vertical plane, heat exchanger and capacity are coaxial, and their axis is parallel to axes of tank, pipeline connecting the upper part of boiler to bottom of expansion tank and expansion tank; at that, heat exchanger is connected through the cock to pipeline connecting the upper part of boiler to bottom of expansion tank; in space between boiler internal walls and external walls there located are heat energy sources and heat-accumulating matters.
EFFECT: invention provides use of heat of phase transition of heat-accumulating matter.
FIELD: power industry.
SUBSTANCE: heat exchanger includes casing with through openings on its opposite sides, phase transient working medium and heat carrier. Phase transient working medium is made in the form of frameless heat exchange elements from form-stable composite heat accumulating material, which are fixed inside casing with possibility of their being freely streamlined with heat carrier. In order to improve heat carrier to the space between adjacent heat exchange elements, elastic corrugated metal ribbed plates are installed. When using the heat exchanger as electric heating device, electric heaters are added to its composition.
EFFECT: improving mass and dimensions parameters of heat exchange devices at simultaneous increase of their power capacity, simplifying the design, increasing energy saving level and improving energy characteristics of the systems operating in peak actuation modes.
5 cl, 5 dwg
FIELD: power engineering.
SUBSTANCE: invention relates to the field of power engineering, more specifically, to facilities for accumulation, storage and release or conversion of heat energy. The heat energy accumulator comprises at least one control element and a working body, providing for accumulation of thermal energy and capable of releasing thermal energy as a result of action of at least one control element. At the same time according to the invention, the working body represents amorphous particles of refractory material, providing for accumulation of thermal energy when in condition of metastable highly destabilised defect-saturated condensed phase and release of thermal energy during phase transition from the defect-saturated destabilised condensed condition into condition of crystalline order.
EFFECT: proposed accumulator has higher energy intensity in comparison with analogues available at the current level of engineering.
5 cl, 1 dwg
SUBSTANCE: invention relates to power engineering and can be used for heating and temperature control. An electric heat accumulating heater comprises a casing, heat accumulating substance and an electric heater connected to a power supply source. Novelty is that the electric heater is made as a conductive layer interacting with a movable electrode and comprising carbon nanomaterial above which a heat accumulating dielectric layer is provided. The device is characterised by highly efficient heat accumulation and possibility of changing the power with the step of 2 W and a wide control range from 10 W to 20 W.
EFFECT: invention allows for reduced power losses and increased heating rate control efficiency.
4 cl, 1 dwg
SUBSTANCE: in a combined thermal storage electric heater with stage heating of the heat-storing core in the latter, a heat sensor is installed on one of the electric heating elements. It allows to set and control the temperature of the electric heating elements, heating them up according to the stage heating principle and not exceeding their maximum allowed temperature. There is a two-layer heat insulation with a shield between the layers of heat insulation inside the chamber with the heat-storing core. And there is a mixing chamber in the chamber with an electric convector. The mixing chamber allows mixing the flows of cold and hot air to a homogeneous state at the outlet of the device. There is an air gap between the bottom wall of the device case and the floor.
EFFECT: high heat efficiency with the ability to set and control the required temperature of electric heating elements installed inside the heat-storing core, mix the cold and hot air flows to a homogeneous state at the outlet of the device.