A single-acting, single-cylinder reciprocating compressor has a cylinder diameter of 300 mm and a stroke of 400 mm. It runs at 100 rpm. Air enters the cylinder at 1 bar; 20°C. It is then compressed to 5 bar. Calculate the mean effective pressure and indicated power input to compressor, when compression is (a) isothermal, (b) according to the law pv1·2 = constant, (c) adiabatic. Calculate isothermal efficiency for each case. Neglect clearance.
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400 mm. It runs at 100 rpm. Air enters the cylinder at 1 bar; 20°C. It is then compressed to 5 bar. Calculate the mean effective pressure and indicated power input to compressor, when compression is (a) isothermal, (b) according to the law pv1·2 = constant, (c) adiabatic. Calculate isothermal efficiency for each case. Neglect clearance.
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