Offline combined plant for the simultaneous production of electricity and heat

 

(57) Abstract:

The invention relates to a power system, relates to power converters direct cycle (for example, internal combustion engines, Stirling engines) and is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat. Technical result achieved - increasing the efficiency and reducing the overall size of your plant. During operation of the engine 1 produces useful energy that is converted into electrical energy by a generator 4, which is located on the same shaft with the engine 1. For cooling the engine 1 includes a cooling circuit 17, which is connected through the heat exchanger 12 with external heat supply. Water from the return line 11 is partially supplied to the steam generator 5, through which passes the line of exhaust gases 2, and partly in the steam-water pump-heater 6. High-pressure steam from the steam generator 5 is fed into the steam-water pump-heater 6, is mixed with water from line 15, form water with high temperature and pressure. Due to this pressure occurs, the supply of hot water on the route is the exercise and water consumption on highways is provided by control valves 14, 16. 1 Il.

The invention relates to the field of power engineering and energy converters, direct cycle (for example, internal combustion engines, Stirling engines) and is intended as a stand-alone power plants for stationary and mobile objects with the simultaneous production of electricity and heat.

Known combination unit on the basis of the Stirling engine with generator on the same shaft, lines, fuel supply and heat exchanger for heating a liquid, through which the high temperature exhaust gases of the Stirling engine, while the heated fluid is conveyed to the external line (application EPO N 0457399. Abstract journal "the Invention of the world", issue 65, No. 5, 1993, page 13). However, this setting is a complex system of joint cooling of the engine and generator, and it is not intended for generation of steam.

A device power plant comprising an internal combustion engine (ice) with the shaft of the consumer power through the coupling and the utilization of steam turbine installation with circuit of the working fluid including steam turbine, condenser, feed pump, steam generator,page 141-142). However, this device is not intended for production of thermal energy for heating external customers.

A device steam-water pump-heater (EOR) intended for use in various industrial technologies using steam, combining the functions of a heater and pump at the same time. The application of EOR can significantly reduce the power consumption for own needs and to reduce the weight and size characteristics of heat exchangers (Energy Petersburg/ newspaper/, N 5, (11), from 25.05.99 year). However, previously the steam-water pump-heater in cogeneration plants has not been applied.

A device cogeneration plants designed for the simultaneous production of electricity and heat, comprising an internal combustion engine with a generator on the same shaft, a supply of fuel, the cooling circuit of the engine, the heating circuit (heating system with heat consumers), a system of heat exchangers which transfer heat engine coolant and high temperature exhaust gas in the heating circuit, and a control Board ("Construction review" //Garnizoana it to reduce electricity consumption for own needs.

The technical result, which can be obtained by carrying out the invention is to increase efficiency by reducing energy consumption for own needs and reducing the overall size of the combined unit as a whole.

To achieve this, the technical result of the Autonomous combined plant for the simultaneous production of electricity and heat, comprising a Converter direct cycle (for example, internal combustion engine or a Stirling engine with generator on the same shaft, line, fuel line, heat exchanger-the heat exchanger high temperature exhaust gases of the engine through which the highway passes the exhaust gases of the engine, the cooling circuit of the engine, which is connected through a heat exchanger with external heating with heat exchanger-heat exchanger high temperature exhaust gases of the engine, made in the form of steam generator, steam and water pump-heater and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, as well as a closed system of highways that provide heat transfer from the engine to the heat consumers and consists of a main line PA is coming from the steam-water pump-heater to heat consumers, line return chilled water heat exchanger, running from the heat consumers and the dividing line valve going into the steam generator, and a line with a control valve and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, going to steam-water pump-heater, while the backbone of the return chilled water is connected with the cooling circuit of the engine through the heat exchanger, and the line of exhaust gases of the engine sequentially passes first through the steam generator, and then through the heat exchanger-heat exchanger low-temperature exhaust gases.

Introduction to Autonomous co-generation plant for the simultaneous production of electricity and heat exchanger-boiler high temperature exhaust gases of the engine, made in the form of steam generator, steam and water pump-heater and heat-exchanger low-temperature exhaust gases of the engine, and a closed system of arteries with regulating valves, providing heat transfer from the engine to the heat consumers, allows to obtain a new property, i.e. integrated use of residual the consumers of heat, as well as produce high-pressure steam for the purpose of its further use to replace a network of pumps and heat exchangers in the heating system.

The drawing shows offline combined plant for the simultaneous production of electricity and heat.

Offline the combination unit includes a Converter direct cycle (for example, internal combustion engine) 1 line of exhaust gases 2 and the cooling jacket 3, the generator 4, located on the same shaft with the engine 1, the heat exchanger-the heat exchanger high temperature exhaust gas is made in the form of a steam generator 5, the steam-water pump-heater 6, the heat exchanger-heat exchanger low-temperature exhaust gas 7, the heat consumers 8, and a closed system of arteries, consisting of a backbone of high-pressure steam 9 coming from the steam generator 5 to the steam-water pump-heater 6, mains hot water 10, coming from the steam-water pump-heater 6 to heat consumers 8, line return chilled water 11 with the heat exchanger 12, coming from the heat consumers 8 and divided by line 13 and valve 14, going into the steam generator 7, going to steam-water pump-heater 6, the cooling circuit 17 of the engine 1 through the jacket 3, the pump 18 is connected with highway 11 through the heat exchanger 12. Highway exhaust gases 2 of the engine 1 passes successively first through the steam generator 5, and then through the heat exchanger-heat exchanger low-temperature exhaust gases 7.

Offline combined plant for the simultaneous production of electricity and heat works as follows.

During operation of the engine 1 produces useful energy that is converted into electrical energy by a generator 4, which is located on the same shaft with the engine 1. For cooling the engine 1 to the cooling jacket 3 is fed by a pump 18 water from the cooling circuit 17. After the engine 1, the heated coolant from the cooling jacket 3 enters the heat exchanger 12 where it is cooled by heat exchange with return water of the external heating system. Return chilled water through line 11 from consumers 8, passing through the heat exchanger 12, is divided by line 13, going into the steam generator 5 to produce high-pressure steam by heat exchange with high-temperature otrabotannaya heated by the residual heat of low-temperature exhaust gas, coming from the steam generator 5 in the steam-water pump-heater 6. Simultaneously, the steam generator 5 through line 9 goes high-pressure steam.

In the steam and water pump-heater 6 due to the special design and the effect of mixing the two-phase vapor-liquid media are increasing the pressure, intensive mixing of the steam and water and the subsequent production of hot water with high temperature (up to 100oC) and pressure. Due to this pressure occurring hot water through line 10 to the external heat consumers 8 and further circulation of water in lines 11, 13, 15.

To control the direction and flow of water on highways is provided by control valves 14, 16.

Sources of information

1. The application of EPO N 0457399. Abstract journal "the Invention of the world", the release of B-65, No. 5, 1993, page 13.

2. Auth. St. N 1677360. BI N 34 from 15.04.91, p. 141-142.

3. "Energy Petersburg //newspaper//, N 5 (11) from 25.05.99,

4. "Construction review" //Journal of quality//, SPb., N 5 (32), may-June 1999, pp. 16-17 prototype.

Offline combined plant for the simultaneous production of electricity and heat, comprising a Converter direct the CEC the AI fuel, heat exchanger-the heat exchanger high temperature exhaust gases of the engine through which the highway passes the exhaust gases of the engine, the cooling circuit of the engine, which is connected through a heat exchanger system with external heat supply, characterized in that provided with a heat exchanger-heat exchanger high temperature exhaust gases of the engine, made in the form of steam generator, steam and water pump-heater and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, and a closed system of highways that provide heat transfer from the engine to the heat consumers and consisting of a backbone of high-pressure steam coming from the steam generator to the steam-water pump-heater, mains hot water, coming from the steam-water pump-heater to heat consumers, highways return chilled water heat exchanger, running from the heat consumers and divides into line with valve going into the steam generator, and a line with a control valve and heat exchanger-a heat exchanger low-temperature exhaust gases of the engine, going to steam-water pump-heater, while the backbone of the return chilled water include the positive first passes through the steam generator, and then through the heat exchanger-heat exchanger low-temperature exhaust gases.

 

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