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     Cogeneration and Trigeneration

   
Ürün Kodu : Cogeneration system
 Sipariş        Detaylar
 
 
Detaylar

Steam Turbine

 

In the plant process develops as follows, respectively:

 

The compressor sends compressed air to the combustion chamber.

From the fuel supply of fuel to the combustion chamber income.

Hot combustion product gases, ensures the rotational movement coming to the gas turbine.

Rotational energy is converted into electrical energy by the generator tools.

The process up to here are the steps used in conventional power generation. From this point begins the cogeneration technology. In the previous step the combustion product gases are used in the production of waste heat boiler steam coming evaluation.

A portion of the resulting vapor is used in heating and hot water requirements.

The other portion is sent to a steam turbine provides the rotational movement.

Rotational energy is converted into electrical energy by the generator tools.

 

trigeneration systems with the cogeneration system operates in the same manner. But; trigeneration in the "cooling" goal added another piece of equipment is also:

 

Absorption cooling

 

Thus finishing the trigeneration system; 5 through step a in absorption refrigeration stage of the steam generated is used in the cooling job.

 

All these processes is noteworthy that while the media:

 

certainly it does not occur an increase in the amount of fuel used. Moreover, if you want to get the same amount of energy in the cogeneration system, you can do more than 40% less fuel.

The most important feature of the system, using the same amount of fuel to produce steam more efficiently and heat from the steam, (once again) is used in electricity generation and finally cooling.

The system includes a fully flexible. 5. step consists of steam heating plant at a certain time if necessary (eg, summer), as well as the generation of electricity (and cooling) can be used.

efficiency ratio of 35% in conventional power generation system, fuel is to go to the level of 90% with the use of this so efficiently.

All of these features are considered, cogeneration and trigeneration systems, how profitable and necessary practices that are emerging. such as energy, industry not only all people need to be made in a matter of vital itself with only 1.5 years, this investment will pay off in 3.5 years.

Gas engines provide a high degree of efficiency not only in terms of flexible power supply, but also in establishing the conditions necessary for plant growth. As it is known, the most basic factors of photosynthesis are carbon dioxide (CO2), heat and light. Gas engine cogeneration systems provide waste heat recovery as well as electricity generation. In the meantime, with the burning of the fuel gas, carbon dioxide is also released. Electricity generated in greenhouse applications is used to illuminate the sera or to sell to the grid, waste heat is used to warm the sera in winter, and finally to decompose CO2 to grow and mature the plants.
 
Usefulness of Cogeneration in Seralard
The productivity level goes up to 95%, which is why it contributes greatly to the conservation of resources and the maximization of profits
Electricity generated at peak demand times of the national network is sold to the network
CO2 and waste heat are stored independently from time to time
CO2 is produced at high quality
Carbon Dioxide and Development of Plants
Plants grow by transforming CO2 into carbon by photosynthesis. Atmospheric CO2 is approximately 350 ppm (one billionth of a degree). Optimal CO2 values ​​differ from plant to plant and are generally below 700 ppm. Through artificial lighting used by the plants, plants are able to absorb even more CO2. If the greenhouse environment is enriched with CO2 and the temperature can be kept at a certain level with sufficient illumination, the growth rate of the plants and thus the number of harvests and the yield will increase considerably. When natural gas is burned in gas engines, about 0.2 kilograms of CO2 per unit kilowatt electricity is generated. This value corresponds to about 5-6% of the volume of exhaust gas.
Energy Use
Gas engines can be used in a variety of forms in energy generators produced by co-generation / combined heat-power generation systems. It can provide electrical power for artificial lighting and / or produce electricity can be sold to the national grid. Heat can be used effectively in the direction of greenhouse needs. In addition, the engine serves as a fertilizer for CO2 plants in the exhaust gas.
Conditioning Exhaust Gas
After the exhaust gas is separated by special catalytic converters (SCR and combustion catalytic converter), it is cooled to about 55 ° C by a heat exchanger and sent to the greenhouse for CO2 enrichment. The exhaust gas composition is continuously monitored by a measuring device to keep the growth and development of the plants at the ideal level.
Important Factors Affecting Yield
Approximately 1 hectare or more greenhouse areas are required for efficient operation
CO2 fertilization is suitable for almost all plant species
The amount of electricity required for CO2 fertilization with simultaneous heat source is 0.5 MWel per hectare.
0.35 MWel per hectare for CO2 fertilization with simultaneous heat source and illumination.
Lighting (such as tomatoes and peppers) is suitable for plants and flowers (such as chrysanthemum and rose).
The most prominent factors for an economic plant operation are the use of heat with high electricity efficiency and CO2 fertilization.


Cogeneration systems are combined energy systems in which electricity and heat are produced together by burning other fuels, especially natural gas, on an engine or turbine. In other words, cogeneration is the simultaneous production of energy in the form of both electricity and heat from the same system and is made available to the use of enterprises. In this context, we can say that the biggest goal in cogeneration is to make the most of primary fuel energy.
Generally, the electricity and heat are supplied separately and separately, while in cogeneration the respective energies are produced at the same time. In this sense, the basic conception of co-generation is the utilization of the waste heat of the machine that produces power, and thus energy efficiency and diversity are increased and more economical results are obtained than when two energy forms are produced independently and in separate processes.
In the cogeneration systems, while operating the generator to produce turbine or motor power, significant amounts of heat are generated through exhaust gases and engine cooling water. The heat produced can be converted to steam, hot water, hot water, hot oil or hot air using waste heat boilers or heat exchangers.
Energy in trigeneration systems; Electricity, heating and cooling in three different forms simultaneously available for the use of enterprises.
The difference from the cogeneration of trigeneration is that the produced heat can be converted and used for cooling needs thanks to the cooling system included in the system. Saving and productivity are achieved by applying the trigeneration systems to the enterprises which require seasonal or continuous cooling.
 
 
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