... 5,000-hp 100 104 145 7,000-hp 100 100 133 9,000-hp 100 100 129 10, 000-hp 100 100 129 ~ ~~ 1,500-hp 124% 94% 100 % 3,000-hp 132 100 100 5,000-hp 134 107 100 7,000-hp 136 113 100 9,000-hp ... from Rules of Thumb for Chemical Engineers. Carl R . Branan (Ed.), Gulf Publishing Company. Houston. Texas. 1994 . 125 116 Rules of Thumb for Mechanical Engineers 100 0 zoo0 ... horsepower requirements for various suction pressures and gas physical properties to plot a family of curves. 120 Rules of Thumb for Mechanical Engineers Centrifugal Compressor Performance Calculations...