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water vapor v O = (H 2S + H 2 + 0,5Σ m C nH m +1,61αV° + 0,124d)/100 (7.14)
H 2
where
3
d - the amount of moisture in a gaseous fuel , g/m .
4.7 Volume of the combustion products (V СP) of 1 kg of liquid (solid) fuel or 1
3
m of gaseous fuel.
v
v
v
v
v
V СP = co + H 2 O + so + N + o . (7.15)
2
2
2
2
8. ENERGY CHARACTERISTICS OF A GAS TURBINE
8.1 Theoretical power of a gas turbine
N G l (8.1)
с
where G - is the mass flow rate of a work fluid, kg/s
8.2 A flow rate of the liquid (solid) fuel per second, kg/s
G F = N/(Hu·η t) (8.2)
3
8.3 A flow of air for combustion of the fuel, m /s
V air =G F·α·V°. (8.3)
3
8.4 The creation of a combustion products of the fuel, m /s
V pc = G air·V cp (8.4)
8.5 When the gas turbine plant operates on gaseous fuel in the above formula instead G F
is needed to record Vg.
9. SELECTION OF EQUIPMENT FOR A GAS TURBINE
9.1 The heat exchangers.
When choosing the type of heat exchanger should be taken into account such
characteristics as the ability to achieve high speeds of fluids, weight and dimensions, the
cost of manufacture and maintenance, the influence of fluid on the heat exchange
surface and the hydraulic resistance.
The shell and tube type heat-exchangers are used for heat exchange between fluids,
liquids and gases, when you need a large heat transfer area F. The main parameters of
heat exchanger are standardized. For them the heat exchange surface are F = 1,0...1369
2
m [8].
The value of heat transfer area F should choose the type, specifying its main
characteristics and designations according to the relevant standard (see Appendix G).
The heat exchange need to choose depend of the value of the heat exchange surface F
by specifying its main characteristics and symbols according to the respective standard.
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