An LNG receiving terminal sends gas to the pipeline at 1,000 psig (70 barg). The LNG is essentially pure methane and is stored in a tank at 2 psig. What is the pump energy (hp, kW) required to send out 400 MMscfd (10.7 10⁶ Nm³/day) of gas to the pipeline at 40F (4.4C)? Assume a pressure drop through the vaporizer of 20 psi (1.4 bar) and a pump efficiency of 70% and a methane liquid density 26.2 lb_m/ft³ (444 kg/Nm³) (see Chapter 2 for pumps).