Cheap thermal power plant

 

(57) Abstract:

The invention relates to the field of energy. Primary area of application is the production of heat and electricity. Cheap thermal power plant consists of a boiler unit (CU), air turbine motor (IPD), heat pump (TN), water pump, air heat exchanger, installed in the boiler plant. Output confuser air turbine ili pipeline associated with podduvalom KU, and the amount of heat absorbed gas-air heat exchanger is heat coming from the hot air blew in KU. The exit gases from the HRSG pipe connected with the gas diffuser of the compressor TN. Air compressor inspection, air turbine inspection, gas compressor NOMENCLATURE, gas turbine T, the generator of electric current, water pump, all mounted on the same shaft. Weekends carbon monoxide gases after the gas turbine TONS are released into the atmosphere with negative temperature T4'=C. The invention improves the efficiency of the power plant. 1 Il.

The invention relates to the field of energy. Primary area of application is the production of heat and electricity. Known thermal power plants (Dostatok thermal power plants and boiler plants (KU) - their low efficiency, the complexity of manufacture and operation. The lack of hydraulic power plants is the need to build dams and flooding that environmentally it is not always advisable, in addition, from agricultural turnover removed large area of land. The lack of NPP is the impossibility of disposing of waste from nuclear reactors. Waste is radioactive and dangerous for living organisms. Not solved the problem of the safety of nuclear power plants (for example, the disaster at the AED).

Known economical thermal power plant comprising a boiler plant, air-turbine engine, heat pump, water pump, air heat exchanger, installed in the boiler plant, pipeline, connecting the output of the air turbine with podduvalom boiler plant, and the amount of heat absorbed gas-air heat exchanger is heat coming from the hot air in the ash-pit of the boiler unit (RU 2099653 C1, F 25 29/00, 20.12.97, 4C.).

The disadvantage of this device is incomplete heat use of fossil fuels.

The invention consists in that, to fully use telectroscope (ATAS). The increase in efficiency is achieved by repeated use of heat and due to the full (deep utilization of the heat leaving with the carbon monoxide gases).

The drawing shows a kinematic diagram of ETAS where:

1 - boiler installation (KU);

2 - the device preparation and supply of fuel to the furnace of the boiler system;

3 - air compressor air turbine motor (IPD);

4 - gas heat exchanger ili;

5 - air turbine ili;

6 is a pipeline connecting the confuser air turbine ili from podduvalom KU;

7 - pipeline connecting the outlet of gases in KU with a diffuser of a gas compressor of the heat pump (TN);

8 - gas compressor VT;

9 - gas heat exchanger, VT;

10 - gas turbine VT;

11 - pipe effluent gases in the atmosphere.

12 - water pump;

13 - water gas radiator heat exchanger;

14 - consumers of heat and electricity;

15 is a generator of electric current.

The possibility of carrying out the invention with the implementation of a significant increase in efficiency is achieved by a method of operation of the combustion device, the patent 2113609 publ. 20.06.1998, additionally, the exit gases from the HRSG is connected with diazonium "Method of heat supply".

Patent 2113609 "Method of operation of the combustion device" is kind of a "thermal flywheel", where heat is rotated from the gas-air heat exchanger inspection to the air turbine inspection, from the air turbine inspection to the furnace of the boiler unit, then from TOP to gas heat exchanger inspection, thus the range of movement of heat closed. And when the condition Q3-Q2><Qwork ili, where the heat is absorbed by an air-gas heat exchanger (4) is equal to the heat discharged from the hot air blew KU, utilized the heat of the sun, scattered in the earth's atmosphere.

Thanks to the "thermal flywheel" saves fuel, as the fuel enters the hot air. Heat pump all the heat of gases uses for heating, emitting carbon monoxide gases with negative temperature. Thus due to thermal flywheel and the heat pump coefficient of performance (efficiency) cost-effective thermal power plant increases.

Calculation formula:

< / BR>
< / BR>
< / BR>
< / BR>
where l is the degree of pressure increase in ili, R2- the air pressure at the outlet of the compressor, Rn- the air pressure at the inlet to the compressor, K-coefficient idiom the compressor ili, heated in the gas-air heat exchanger inspection to a temperature T3at the entrance to allow the apparatus air turbine inspection.

The pressure and temperature of air in the air turbine ili fall, turning into power, one of the power spins a generator of electric current, the other part of the power rotates TN.

Hot, oxygen-rich air through the pipeline (6) enters blew KU, which served a fossil fuel from the device preparation and supply of fuel to the furnace KU (2).

Carbon monoxide hot gases from a boiler plant through a pipeline (7) gas compressor TN (8) get compressed to a temperature T'2later in the gas heat exchanger (9) carbon monoxide gases are cooled to a temperature T'3=320 To heating this water for heating.

In a gas turbine TN cooled compressed carbon monoxide gases are expanded, cooled to subzero temperature, gives the fraction of the power required to drive the gas compressor TN, increasing due to this the efficiency of TN.

Numerical example accept:

specific heat of air at constant pressure is taken from the graph Cp=F(T);

T is the absolute temperature standard atmosf is t = 973 K;

c- the efficiency of compression of the air in ili;

p- efficiency of the expansion of the air in ili;

T2is the absolute temperature of the compressed air in the air compressor ili,;

T4is the absolute temperature of the air after the air turbine ili,;

Tmaxthe maximum temperature in the QU;

< / BR>
Tmax=T3+40=973+40=1013 K;

Tminis the absolute temperature of the gases after passing them through a gas / air heat exchanger.

T'1=Tmin;

< / BR>
T'4is the absolute temperature of the gases after the gas turbine T, K;

T'3is the absolute temperature of gases at the entrance to allow the apparatus of the gas turbine T, K;

T'3=320 K.

Calculation of BTB

Q3= 9730,271 = 263,7 kcal/kg;

QH= 2880,2384 = 68,65 kcal/kg;

< / BR>
Q2=5000,245=122,44 kcal/kg;

< / BR>
Q4=628,70,251=157,8 kcal/kg;

Qmax=10130,2723=275,8 kcal/kg;

< / BR>
QT=Q3- Q2< / BR>
The heat absorbed by the gas-air heat exchanger = 141,26 kcal/kg;

Qcm=Qmax-Q4< / BR>
Heat mixture

Qcm=275,8-157,8=118 kcal/kg

The heat equivalent of the power generator of electric current

Qe=QN
T'1=Tmin=546 K;

Q'1=134,54 kcal/kg;

< / BR>
Q'2=7070,253=178,76 kcal/kg;

< / BR>
Q'4=2610,238=62,12 kcal/kg;

Q'3=3200,2392=76,5 kcal/kg;

QT- heat, equivalent to the power needed to drive the heat pump

QT=Q'2-Q'1-(Q'3-Q'4)=178,76-134,54-(76,5-62,12)=29,84 kcal/kg;

Qg=Q'2-Q'3=178,76-76,5=102,26 kcal/kg;

Qg- the heat given to the water radiator;

Qe- heat, equivalent to the power produced power minus the power consumed by a heat pump.

Elementary thermodynamic calculation "ATE" checked compliance with the first law of thermodynamics.

In a closed system "ATA cost of heat is: heat the air-fuel mixture Qcm=118 kcal/kg, the heat of atmospheric air

Qn=Q'4=68,65-62,12=6,53 kcal/kg

In a closed system "ATE" useful heat is Qe-QTH= Qe; br52.11-29,84= 22,27 kcal/kg, for the production of electricity Qg=Q'2-Q'3=102,26 kcal/kg

Necessary to comply with the law of conservation of energy to heat losses amounted results

< / BR>
118+68,65-62,1222,27+178,76-76,5,

124 Wednesday, as well as mechanical friction 5-6% and then thermal efficiency of ETA will be

0

Economic thermal power plant, consisting of boiler unit (CU), air turbine motor (IPD), heat pump (TN), water pump, air heat exchanger, installed in the boiler plant, the output confuser air turbine inspection, pipeline associated with podduvalom KU, and the amount of heat absorbed gas-air heat exchanger is heat coming from the hot air blew KU, characterized in that the exit gases from the HRSG pipe connected with the gas diffuser of the compressor TN, air compressor inspection, air turbine inspection, gas compressor NOMENCLATURE, gas turbine TN, the generator of electric current, water pump, all mounted on the same shaft, and output carbon monoxide gases after the gas turbine TONS are released into the atmosphere with negative temperature T4= K.

 

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FIELD: heat power engineering.

SUBSTANCE: invention can be used in contact-type steam-gas plants containing gas-turbine plants with injection of steam. Proposed contact-type steam-gas plant contains gas-turbine plant with compressor, combustion chamber and main gas turbine, recovery boiler with two-pressure steam circuits communicating at steam outlets by steam pipelines and with inlets of gas-turbine plant by high-pressure and low-pressure steam lines, respectively, and at inlet of heating carrier (gas), with gas outlet of gas-turbine plant. Contact-type steam-gas plant contains also gas cooler-condenser connected by condensate outlet through pumps and with condensate inlet of recovery boiler. To reduced gas pressure at exhaust of gas turbine, contact-type steam-gas plant is furnished with topping-up compressor communicating by compressed gas inlet with gas outlet of gas cooler-condenser, by gas outlet with surrounding medium, and overexpansion gas turbine communicating by gas inlet with gas outlet of recovery boiler and by gas outlet, with gas inlet of gas-cooler-condenser. Rotor of overexpansion gas turbine is coupled (for instance, is installed) on one shaft with rotors of gas-turbine plant and/or topping-up compressor.

EFFECT: increased efficiency of contact-type steam-gas plant owing to reduction of gas turbine exhaust gas pressure without consumption of useful power of plant.

1 dwg

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