Hi,
I am currently doing my internship in the oil and gas industry (contractor) as process engineer. My supervisor give me a task to do some reverse engineering where i need to study how a spreadsheet (calculation) construct by other process engineer was been constructed.
Ok the situation is the natural gas source is coming from NPS 18 and flow through NPS 8. The problem is i stuck at the early stage to calculate density of the natural gas at respective T and P. Based on the equation ρ = P.Mw/RTZ i got 19.52 but he got 20.17. Does anyone can help me? Thank you.
As in the attachment are the spreasheet and the gas composition