Suitable fuels are all petroleum distillates (heavier for larger engines). Large vradystrofoi combu

a. Units with small gas engine (15-1000 kW) engine or Diesel askevold (75-1000 kW), b. average power systems (1000-6000 kW) engine or gas engine with Diesel, c. systems of high power (over 6000 kW ) engine with Diesel.
Commercially available the following types of gas turbines. Petrol askevold cars have been converted askevold to gas turbines. They are usually small engines (15-30 kW), light, with great concentration of power. The conversion very little affects the performance askevold and reduce askevold power by 18% approximately. Thanks to mass production prices are low, but their lifespan is relatively short (1000-3000 hours). Engines Diesel cars have been converted to gas turbines. They have power to 200 kW. The conversion askevold is achieved by modifications to the piston askevold head and valve mechanism, imposed by the fact that the ignition is no longer a simple compression but spark. The conversion usually causes no reduction in performance, as there is scope to reduce the excess askevold air. Stationary engines converted to gas turbines or having from the beginning designed as gas turbines. These machines are heavy and sturdy. Manufactured for applications in the industry and ships. The power reaches 3000 kW. The tough construction askevold reduces maintenance requirements, but increases the acquisition cost. Machines are suitable for continuous operation at high load. Fixed dual fuel engines. Diesel askevold engines are to power 6000 kW. The fuel consists of 90% natural gas, which is ignited by spark plug but not with liquid fuel injection Diesel (which is the remaining 10% of the supplied energy). They have the advantage that they can operate with either natural gas or fuel Diesel, which of course increases the cost of purchase and maintenance. Diesel engines are divided into tachystrofous, mesostrofous and vradystrofous.
75-1500
Suitable fuels are all petroleum distillates (heavier for larger engines). Large vradystrofoi combustion engines may even residues from the distillation of petroleum (residuals).
As in the case of gas turbines, exhaust engine is direct or indirect use. The gas temperature askevold is 300-400 C, ie. Significantly lower than that of the turbine, so it makes more frequent the need for supplemental heat. This is obtained either by positioning the burner and air supply for combustion of supplementary fuel in the exhaust gas boiler (or the heat processing furnace), or installing auxiliary boiler. The large engines offer the possibility of a combined cycle.
Figure 7 shows a general askevold flow diagram askevold of such a system, not the only possible arrangement. The engine drives the generator. Four exchangers recover heat from fluids related machine operation: oil cooler, water cooler (the closed circuit of the motor), air cooler and heat exchanger anakomidis from engine exhaust (or exhaust gas boiler). With the heat that heated water intended askevold for different uses. In systems of medium and high strength, and sufficient heat to generate steam. Small engines do not have oil cooler. Moreover, when the engine is not equipped with a turbocharger (in units to the lower limit of the power), askevold there is no air cooler.
The concentration increases engine power by overcharging the combustion askevold chamber. The turbocharged (also called askevold pair overfill) consists of gas turbine driven by exhaust gases from the engine and drives a centrifugal compressor. askevold Due to the high temperature output of the turbocharger (the 120-140 C), the air density is low. To increase the degree of completeness of the cylinder, the air is cooled in a special refrigerator (Figure 7), providing heat to the water.
There are two cases of temperature side outlet air from the refrigerator: low temperature (approximately 45 C), or high temperature (approximately 90 C). The low temperature results in a higher degree of completeness and therefore a higher concentration of power. However, the recovered heat finds limited use, because the water at the outlet of the radiator has a low temperature askevold (30-35 C). This solution can be chosen when you need warm water that comes into the system with a temperature of 20-25 C. If water comes into the system with a temperature of 60-70 C, as occurs, e.g. heating networks, then the solution to the high temperature is preferable in terms of operating the fuel energy, and increases the overall system efficiency by 3-5%. The temperature affects the level relative to the flow of the water placement of the three coolers (oil, water and air).
With a