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turbine territory
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[quote]QUOTE: <i>Originally posted by RPRiebe</i> <br />[brDave: <br />Turbines are not driven by heat, turbines are driven by the force of the exhaust. <br />The trick of designing any (including auto units) turbine driven by combustion exhaust, is to design a system that can deal with the heat, which is in four figures, even in a piston engine turbine. <br />Efficient combustion produces two things, among others, greater output and greater heat; i.e. the reason the hottest part of any fire, is where the most efficient (complete) combustion is taking place. <br />[/quote] <br /> <br />Oh but they are driven by the heat. You had better brush up on your thermodynamics. The real trick to efficient engines, be they reciprocating steam. turbine steam, otto cycle, diesel cycle, sterling cycle, or gas turbine, is to maximize the use of the heat generated. During the expansion of the gas in the power stroke, or through the turbine, the energy to pust the pistons or the blades comes from the heat of the gas. The temperature of the gas in the exhaust of a turbine is much cooler than the same gas at the inlet of the power blades.
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