I’ve been trying to implement the Lee-Kesler EOS in a spreadsheet but my results are inconsistent with tabulated values. The correlations are given in terms of the reduced volume Vr which I calculate as Vr=Tr/Pr. Is that correct?
My reasoning in not including the gas constant R was that if PV = RT and PcVc = RTc then by dividing the two equations one gets PrVr=Tr. But apparently, Vr is not defined the same way as Tr and Pr are.