The pumps will be multistage and intercooled to reduce compression costs, the temperature will never get that high.
With that size pipe and pressure I can see why pipe breaks are so devastating. On 17 July 2012 20:29, David Jonsson <[email protected]> wrote: > Nord Stream is 1200 km long, 1200 mm wide and transfers 55 billion m^3 of > gas per year. At 150 bar that's 10 m/s. And pumping that amount consumes > the power 170 MW. The power content of the gas flow compares to 70 GW. > > Where is all heat going in the compression stage of the gas? The gas (with > Cp/Cv=1.3) becomes 660 C hot. > > How big is the drag in a pipe like that? > > Here it says 366 MW pumping power and 220 bar. > http://urresult.ru/?cat=123 > Even worse, but I didn't take the warming of the gas in the pumps into > consideration. > > David > > David Jonsson, Sweden, phone callto:+46703000370 > >
