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Maisotsenko combustion turbine cycle

 

Gas turbines are widely used in energy, aviation, shipbuilding, as well as mechanical drive in various systems. Despite a high rate of thermodynamic perfection, the coefficient of performance (COP) of powerful gas turbines is not more than 40% (GTP SGT5-800H; 375 MW; «Siemens», Germany). To improve the COP of gas turbines a variety of methods is used, the main of which are: increase in temperature of the combustion products before the turbine and increase of compression of air in the compressor.

 

Maisotsenko Combustion Turbine Cycle (MCTC) aims to increase the power output and broaden the power range while sustaining high system efficiency by supplying added mass (moist air) to the turbine with no additional work of the compressor. MCTC recovers turbine exhaust heat by putting it back to the cycle. Also by supplying moist air into the combustion chamber lower emissions are achieved. /9, p.2./

 

The scheme of the MCTC is shown in the Figure 7.

 

FIGURE 7. Maisotsenko Combustion Turbine Cycle (MCTC) /9/.

 

Decrease in temperature without adding moisture in the air can increase efficiency of the compressor. The colder the air, the easier it is to compress. Based on this, there is the Maisotsenko cooling cycle before the compressor. It allows cool the air flow without high increase in energy consumption. /9, p.2./

 

After compressor, dry and cold air comes to the Maisotsenko compressed air saturator/turbine exhaust cooler. Detailed diagram of the Maisotsenko compressed air saturator is shown in the Figure 8.

 

 

FIGURE 8. Maisotsenko compressed air saturator/turbine exhaust cooler /9/.

 

Compressed cold and dry air comes to the Maisotsenko compressed air saturator, where it is divided into 2 streams. One of the streams goes through the narrow channel, where it is cooled. After exiting of this channel the flow of air gets into the wet channel that surrounds the other narrow channels. There, because of the evaporation it is cooled and humidified. This air flow goes around narrow channels in counter direction and cools air flows inside them.

 

The other air stream goes through their channels, where they are cooled by the first air stream. After that, they enter into the wet channel, where they are cooled and saturated with water due to evaporation. Before leaving the Maisotsenko compressed air saturator the first stream is mixed with the second. After that, the flow of moist air enters the combustor.

 

On the other hand, exhaust gas from the turbine comes to the Maisotsenko compressed air saturator. There it goes through the narrow channels in counter flow with the humid air from the compressor. The heat from the hot exhaust gas goes to the cold air from the compressor.

 

Maisotsenko compressed air saturator allows achieve a very high degree of humidification - 30% or more. With use of the air with high humidity, improves the fuel consumption, the level of harmful emissions into the atmosphere reduces by several times, increases power of the gas turbine. However, the moist air requires more fuel, because of the higher specific heat capacity. On the other hand, more fuel means bigger temperature of the turbine exhaust gases, which could be recovered in the Maisotsenko compressed air saturator/turbine exhaust cooler. /9, p.1-3./



 

Other systems

 

M-cycle can be used in various fields. On the basis of the M-cycle many different devices are patented, e.g. refrigerant condenser for air conditioners, refrigerators and freezers, new construction of cooler tower packing, units for production of fresh water from industrial fluids and seawater and so on /10, p.5/.

 

In the short term, the M-cycle can be used in internal combustion engines, gas turbines, fuel burners, condensers for various purposes, car air-conditioning systems, boilers and water heaters, industrial furnaces, thermo-chemical fuel recovery systems /10, p.8/.

 

For instance, installation of ceramic recuperator with indirect evaporative cooling at the exit of the engine, where the temperature is from 540 °C up to 980°C, will not only utilize the exhaust heat and water vapor contained in the flue gas, but also the heat of the engine cooling system /10, p.8/.

 

Minor changes in the design of cooler tower packing, in accordance with the M-cycle, reduce the consumption of water by 30% and more (Figure 9). However, at a relative humidity of over 60% water consumption will be the same as in conventional cooling towers. /10, p.8-10./

 

FIGURE 9. The construction of cooling tower packing /10/.

 

 


 

COOLERADO COOLERS

 

As can be seen, the M-cycle can be used in many fields. The first area in which the M-cycle has been applied is the ventilation and air conditioning.

 

Coolerado company was founded in 2004 by Valery Maisotsenko and Gillan brothers. The first units were installed at Mount St. Vincent’s Children’s Home and Bradford Publishing. At once Coolerado coolers received the prestigious R&D 100 award for the successful operation of the systems.

 

At the moment there are installed more than 1300 Coolerado air conditioners in 26 countries. /11./

 


Date: 2015-12-11; view: 2322


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