The impact of mathematical modelling and performance calculation on screw compressor design cannot be overstated. Today, screw compressors are used in a wide range of applications, including:
Oil-injection improves sealing and cooling. Additional terms in energy equation: $$ \fracdUd\theta = \dotQ gas + \dotQ oil - \dotW + \dotm in h in - \dotm out h out + \dotm oil c p,oil (T_oil - T_gas) $$
$$ P v = Z(P,T) R T $$
The foundation of any screw compressor model is the accurate mathematical definition of the rotor profiles . : This involves defining the