def VapEtlp_px_N2(P,T,x_N2):
	x = (P-5.63256585e+02)/2.47804800e-01
	y = (T--1.74161904e+02)/1.07862000e-01
	z = (x_N2-6.50594679e-01)/1.43380675e-02
	output = \
	    1*-5.02448341e+03
	vap_etlp = output*1.00000000e+00+0.00000000e+00
	return vap_etlp