The district heating system
(57) Abstract:The invention relates to a power system, in particular to a district heating residential, public and industrial buildings and structures. The heating system includes forward and reverse pipelines thermal network, creating together with the local circuit of the heating devices of the building, the centralized system of the brine in which the return line return fluid connected with the separation of the heat exchanger low-temperature heating system floor heating panels. The technical result is to increase the efficiency of the district heating system by increasing the coefficient of thermal energy of the heat carrier. 1 Il. The invention relates to a power system, in particular to the field of district heating residential, public and industrial buildings and constructions that have thermal points connected with the forward and reverse main pipelines centralized system for circulation of a coolant from a Central boiler or CHP (hereinafter teplotsentralnaya substations buildings [1, 2], in which the coolant coming from a straight pipe of a heating plant, is used in the circuit of the heating devices of the building and then returned from thermal point of a building in the return pipe of the heating plant.The main disadvantage of such a centralized heating system is that the temperature of the coolant returned from thermal unit building in the reverse main pipe of a heating plant, relatively high temperature environment, however, is insufficient to further the intended purpose of the fluid [3, 4]. This district heating system has a low coefficient of thermal energy for direct heat transfer medium and large heat losses to the environment during the transportation of the reverse thermal fluid to the source of district heating - Central boiler or CHP. In the latter case, this system has another drawback - the need for additional, deeper cooling of the return fluid for further use in the process cycle CHP.The task of the invention is to create a new schema systemeffective district heating systems due to the increase of the coefficient of thermal energy of the heat carrier, circulating pipelines, reducing the transport of heat losses by reducing the return temperature of the heat carrier, and reducing process costs more, deeper cooling of the return fluid in the case when the source of district heating is the CHP.The problem is solved by application of the scheme of the centralized heat supply systems, including direct and reverse pipelines thermal network, creating together with the local circuit heating appliances building a centralized system of circulation of the heat carrier, in which, according to the invention, to the return line return fluid connected with the separation of the heat exchanger low-temperature heating system floor heating panels "Warm floor".The proposed system is useful thermal energy of the return fluid, which is used for heating is connected to the opposite main pipeline with the separation of the heat exchanger low-temperature heating system floor heating panels "Warm floor". Thus, the use of thermal energy of the heat carrier, circulating pipelines, reducing the transport of heat losses by reducing the return temperature of the heat carrier, and reducing process costs more, deeper cooling of the return fluid in the case when the source of district heating is the CHP.Comparative analysis of the claimed system and prototype reveals the presence of distinctive features in the proposed system in comparison with the closest analogue that allows to make a conclusion on the conformity of the proposed solutions to the criterion "novelty".The comparison of the proposed solutions not only prototype, but also with other technical solutions in this field of technology has led to the conclusion that it is not obvious from the prior art and, therefore, meets the criterion of "substantial differences".The presence of distinctive features provides the ability to get a positive effect in terms of the efficiency of the proposed system.The use of the invention in a power system ensures compliance with the criterion of "industrial applicability".The invention of predlozheniya 1 includes direct and inverse 2 pipes heating network, creating together with the local circuit heating appliances building 3 system centralized circulation of the coolant. To the return line 2 a heating system return fluid connected with the separation of the heat exchanger 4 low-temperature heating system floor heating panels "Warm floor" 5.It is known that in the system of centralized heat supply of the fluid to be transported directly to the main pipe 1, has a temperature of up to 150oC and passes through heater building (in the role of a mixing unit) with a temperature of 85-105oC in a heating system with a local heating devices such as radiators, a member of the local circuit of the heating system of the building 3. Used coolant with a temperature of about 65-70oC goes through thermal unit building in the reverse main pipe 2. Then return the coolant return pipe 2 having the above temperature settings, enters the primary circuit dividing the heat exchanger 4, where it transfers its thermal energy to the coolant circulating through the secondary circuit of the heat exchanger 4 to the floor" 5.Thus, the efficiency of the district heating system is enhanced by the use of thermal energy of the return fluid in the low-temperature heating system floor heating panels "Warm floor", which leads to lowering the return temperature of the heat carrier and, consequently, to the increase of the efficiency of use of thermal energy transported by the coolant in the system of centralized heat supply.Sources of information
1. Aparcel M M "Recommendations for adjustment of water heating systems". The scheme of the heat input from independent attach the heating system. The Bureau of technology. information, M. 1968, 46.2. Gromov N. To. "Urban district heating systems); Energy, 1964, p 103. (prototype)
3. SNiP 2.04.05-91*"Heating, ventilation and air conditioning), Gosstroy of Russia, 1998, S. 4-10, Applications 1, 2.4. SNiP 2.04.07-86 "Thermal networks", M, GOS.construction Committee of the USSR, 1987. The district heating system, including direct and reverse pipelines thermal network, creating together with the local contours circulation heaters buildings system center is Telem connected with the separation of the heat exchanger low-temperature heating system floor heating panels.
FIELD: heating engineering.
SUBSTANCE: heating system comprises round or elliptic inner passage for fluid, top and bottom plates that face each other and define an inner passage for flowing the heat-transfer water, a number of connecting members, inner passage for water made in the plates by means of connecting members, and two sections for transporting fluid for supplying and discharging water.
EFFECT: enhanced efficiency.
10 cl, 13 dwg, 1 tbl
FIELD: power engineering.
SUBSTANCE: heat electric power supply system consists of heat energy use sub-system, straight and return main pipelines of heat network, circulation circuit of heat carrier of centralised heat supply at least with one heating unit of the building, and electric power supply sub-system. At that electric power supply sub-system consists of power plant; power lines; at least one liquid transformer consisting of at least one winding; tank with transformer liquid; circulation pump; and separating heat exchanger the secondary circuit whereof is equipped with circulation pump. When the above circulation pump is in operation, heat carrier of secondary circuit of separating heat exchanger is supplied to one heating unit of the building, which is connected to secondary circuit of separating heat exchanger. Version of heat electric power supply system is described as well.
EFFECT: improving efficiency, ecological properties and reliability of the system, fuel calorific capacity fully used by centralised heat supply source, and effectiveness of heat removal from transformers, reducing temperature loads on electrical part of the system during intense ambient temperature decrease, cost of operation and overall dimensions of electrical transformers.
3 cl, 3 dwg
FIELD: heating systems.
SUBSTANCE: invention refers to control method of convective heat exchange system in which heat energy is exchanged between liquid and medium. Control method of convective heat exchange system in which heat energy is exchanged between liquid and medium involves creation of liquid flow through medium, determination of value of transferred heat by adding several differences between liquid temperature at medium inlet and liquid temperature at heated medium outlet; at that, temperatures are measured in fixed time periods within fixed time intervals, determination of change of medium temperature during fixed time interval, and calculation of ratio between transferred heat and temperature variation. There also described is floor heating system and method of determining temperature of massive floor with tubes built in the floor.
EFFECT: improving available convective heat exchange systems, namely high-inertia systems like floor heating systems, which allows increasing comfort, decreasing temperature variations and increasing economy.
10 cl, 21 dwg
FIELD: heating systems.
SUBSTANCE: invention refers to heating equipment, namely to radiant heating systems, and can be used for keeping temperature mode in domestic and public buildings during winter period. Radiant panel device contains one or several heating panels with heat-release surface and heat generator; heating panel includes closed circulation loop filled with working medium in the form of liquid and its vapours, in which there is the following: condensation section having thermal contact with heat-release surface of heating panel; evaporation section interconnected with it and having thermal contact with heating device of heat generator; accumulation-and-displacement section interacting with evaporation and condensation sections and having thermal contact with device of cyclic heating of accumulation-and-displacement section to the temperature exceeding temperature of the rest sections of circulation loop and cyclic cooling of accumulation-and-displacement section to the temperature not exceeding temperature of the rest sections of circulation loop. The device located between accumulation-and-displacement section and condensation section and allowing movement of working medium from condensation section to accumulation-and-displacement section and preventing, completely or partially, movement of working medium from accumulation-and-displacement section to condensation section. The device located between accumulation-and-displacement section and evaporation section and allowing movement of working medium from accumulation-and-displacement section to evaporation section and preventing, completely or partially, movement of working medium from evaporation section to accumulation-and-displacement section.
EFFECT: increasing efficiency of heat transfer from heating device of heat generator to heat-release surface of panel.
17 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: procedure for production of multi-layer sectional heating panel consists in: stacking layers of sound and moisture proof material and porous heat insulation material on base of synthetic resin one on another. A row of shock absorbing poles passes through layers at specified horizontal step; the poles have metal protective caps on their upper parts. Layers are stacked on a bearing device on the first worktable. The bearing device is designed for transfer together with a fabricated heating panel along worktables set successively along a work line. Further, the procedure consists in matching and connection of a lower heat accumulating plate to upper surface of heat insulating material on the second worktable; in matching and connection of a heat conducting steel plate to upper surface of the lower heat accumulating plate on the third worktable; in matching and connection the upper heat accumulating plate to upper surface of the heat conducting steel plate on the fourth work table; in making holes for rivets by drilling the upper and lower heat accumulating plates, heat conducting steel plate and upper parts of corresponding protective caps put on upper parts of shock absorbing poles on the fifth worktable; in setting rivets into holes on the sixth work table; in riveting with a riveting machine on the seventh worktable for through connection with rivets via holes made in the heat conducting steel plate and holes in an upper part of the protective caps of the shock absorbing poles thus producing a finished heating panel of several layers combined into an integral one; and in transporting the finished panel from the eighth worktable with a transporting device.
EFFECT: ease at construction and operation, raised efficiency at fabrication of great number of multi-layer heating panels.
SUBSTANCE: formation method of multi-purpose plastic panel for its being used for room heating and cooling is characterised with installation in panel of upper and lower plates one opposite another so that cavities are formed between them, and with installation of headers for arrangement of heat carrier movement in end parts of the panel. Layers of plates, which form cavities are made in the form of honeycomb cells using at least one layer, around which on external layer there formed is honeycomb cells in the form of extended functional channels using at least one layer for the purpose of their being used for arrangement of heat exchange, and to headers by means of nozzles there connected are pipelines of heating and cooling systems; at that, some part of cells of external layer are plugged on the side of heat carrier headers and to them by means of vertical channels there made is air supply and discharge line from ventilation system.
EFFECT: providing the functioning of panel both of heating and cooling systems, possibility of using the panel as independent finishing material for room finishing.
5 cl, 6 dwg
SUBSTANCE: heat-insulating panel assembly includes the following: a variety of panels; the first and the second hot water supply tubes installed separately inside the panel to provide at least two hot water passages; and the first and the second connection assemblies provided in the panel for connection to a boiler or to the first and the second hot water supply tube for water circulation in the first and the second hot water supply tubes. According to the present invention, two hot water tubes provide different hot water passages inside the panel used for heating of a room.
EFFECT: improving heating efficiency; simplifying manufacture of a double structure of hot water supply tubes with improved stability to temperature variations and corrosion; possibility of choosing a configuration, a pitch and a shape of tubes without any restrictions owing to using as a tube material the thermoplastic elastomer with a polybutylene layer on inner surface, as wells reducing the diameter and length of hot water supply tubes installed in the panel, due to which thickness of the panel is reduced and the boiler load is minimised.
7 cl, 15 dwg
FIELD: power industry.
SUBSTANCE: invention relates to heat power industry and can be used in technologies of independent heating and hot water supply of individual houses, industrial buildings and facilities. A heating device includes an insulated housing with a furnace chamber arranged in it and provided with atomisers above which a heat exchanger with heat carrier inlet and outlet and a flue gas collector is installed. Additionally, the device is provided with a thermoelectric converter arranged in the furnace chamber, the outlet of which is connected through an in-series connected voltage inverter and a switching apparatus to a feed circuit of a delivery pump and an ozone plant connected by means of an air duct through the delivery pump to the furnace chamber.
EFFECT: invention allows reducing natural gas consumption by 15…20%, as well as considerably reducing toxicity of combustion products owing to reducing content of carbon and nitrogen oxides in them.
FIELD: power industry.
SUBSTANCE: technical solution relates to power systems and can be used for heating of premises by accumulation of energy and its use in heated floor systems. The technical result is achieved by that in the building heating system containing the heat generating unit and heating sections designed from the pipes interconnected among themselves, located in a floor the cavity of which is filled with the liquid heat carrier, and the heat generating unit is fitted with the mains power switching unit connected to the heat carrier temperature sensor, the input branch pipe of heating sections is connected to the output branch pipe of the heat generating unit, and the output branch pipe - to the input heat generating unit, and the heat generating unit consists of an electric boiler and thermal energy storage canister or of the thermal energy storage canister with tubular electric heaters, the mains power switching unit of the heat generating unit is designed as a control unit which enables heating mode of the heat carrier at the beginning of the period of reduced rate for electric power and disables when the heat carrier is heated up to 85°C, and the input branch pipe of heating sections is connected to the output branch pipe of thermal energy storage canister through the thermostatic mixing valve connected through the pipeline with the return pipeline of heating sections..
EFFECT: technical result of the offered technical solution is depreciation of operation of heating systems.
SUBSTANCE: radiator comprises horizontally heating pipes installed with extreme sections bent upwards connected by adapters. Bent sections form air cavities compensating volume of freezing water. Besides, heating pipes have heat removing ribs, which reduce their size from the middle of the pipe to its ends, which prevents radiator break with increased length of the heating pipe.
EFFECT: in case of a heating system emergency cost of emergency-recovery works reduces significantly.